AKRONYMA.TXT --- UTF-8 Last modified 2021-12-09 (20490)
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1BASE-5 1MHz StarLAN
1G 1st Generation ( analog system )
2B1Q 2-Binary 1-Quaternary ( modulation scheme )
2D 2(two)-Dimensional
2G 2nd Generation ( digital system )
2W 2-Wire
3D 3(three)-Dimensional
3G 3rd Generation ( high-speed network system )
3GPP 3rd Generation Partnership Project
3M Minnesota Mining & Manufacturing ( Co. )
3OIIP 3rd(third)-Order Input-Intercept Point
3OP 3rd(third)-Order Product ( level )
6DOF 6 Degree Of Freedom ( boundary/finite-element modeling )
8PSK 8-level Phase-Shift Keying
8-VSB 8-level Vestigial SideBand
10BASE-T 10MHz Twisted Pair ( 4-Wire UTP )
10BASE-5 10MHz 'Thick Ethernet' ( thick coaxial cable )
10BASE-2 10MHz 'Thin Ethernet' ( thin coaxial cable, 'Cheapernet' )
16QAM 16-level Quadrature Amplitude Modulation
64-CAP 64-point Carrierless Amplitude/Phase ( modulation )
64QAM 64-symbol Quadrature Amplitude Modulation
100BASE-FX 100MHz Fiber Optic
100BASE-T4 100MHz Twisted Pair ( 4-pair UTP CAT-3 )
100BASE-TX 100MHz Twisted Pair ( 2-pair UTP CAT-5, category five twisted-pair copper )
a atto ( 10^-18 )
A Ampere ( electrical current )
A2LA American Association for Laboratory Accreditation
AA Active Addressing ( LCD )
AAGR Average Annual Growth Rate
AAIC Active Addressing Integrated Circuit
AAL ATM-Adaption Layer
AAP Authorized Assembler Program ( IBM )
ABB Asea Brown Boveri ( http://www.abb.com/ )
ABC ADPCM Baseband Controller ( DECT )
ABF Adaptive Beam-Forming ( filter )
ABI Application Binary Interface
ABIL Advanced Bus-Interface Logic
ABK Anzeige-BedienKomponente ( SPS )
ABLE Adaptive Batterie-Life Extender
ABM Advanced Batterie Management
ABM Asynchronous Balance Mode
ABM ATM-Buffer Manager
ABR Available Bit Rate ( ATM )
ABS Analog Behavorial Model
ABS Anti-lock Braking System
ABS Acrylonitrile Butadiene Styrene ( Akrylnitril, Butadien, Styrol )
ABT Advanced BiCMOS Technology
Ac Actinium [ Element 89 ]
AC Advanced CMOS ( circuit )
AC Alternating Current
ACATS Advisory Committee on Advanced Television Service ( standard )
ACB Association of Competent Bodies ( EMC directive )
ACC American Control Conference
ACD Advanced Communication Devices ( Fremont CA )
AC/DC Alternating Current - Direct Current
ACE Absolute Contacting Encoder
ACE Advanced Communication Engine
ACE Analog Circuit Engine
ACE Asynchronous Communication Element
ACE ATM Crossbar Element
ACELP Adaptive Code-Excited Linear Prediction
ACESA Australian Commonwealth Engineering Standards Association
ACET Advisory Commitee on Electronics and Telecommunication
ACF Anisotropic Conductive Film
ACF Auto-Correlation Function
ACI Automatic Calibration Interface ( ASAM )
ACI Automatic Channel Installation ( TV )
ACIA Asynchronous Communications Interface Adapter
ACK Acknowledge ( ASCII control code )
ACL Advanced CMOS Logic
ACL Application Configuration Language
ACM Address-Code Multiplex
ACM Association for Computing Machinery
ACME A Company Making Everything [ humorously explained, a brand sold from Sears Roebuck catalogs ]
ACM/SIGDA Association for Computing Machinery/Special Interest Group on Design Automation
ACOS Advisory Committee on Safety
ACP Adjacent Channel Power
ACPC Apple Communications Protocol Card [ a parallel interface card that lets an Apple II-family computer communicate and exchange files with other Apple II computers or with most IBM host computers ]
ACPI Advanced Configuration and Power Interface
ACPR Adjacent-Channel Power-Ratio ( measurement )
ACR Advanced Capabilities Radar
ACR Allowed Cell Rate ( ATM )
ACR Attenuation to Crosstalk Ratio
ACSE Association Control Service Element
AD Analog Devices
A/D Analog to Digital
ADA Autonomous Data Acquisition
ADB Apple Desktop Bus
ADC American Digital Cellular ( Telephony )
ADC Analog-to-Digital Converter
ADE Audible Doppler Enhancer
ADF Automatic Direction Finder
ADFC Allgemeiner Deutscher Fahrrad-Club
ADG Automatic Datasheet Generation
ADLC Asynchronous Data Link Control
ADM Add-Drop Multiplexer
ADM Application Development Module
ADPCM Adaptive Differential Pulse-Code Modulation
ADR ASTRA Digital Radio
ADS Advanced Design System ( Agilent EEsof Westlake Village CA, former HP EEsof )
ADSI Analog Display Service Interface
ADSL Asymmetric Digital Subscriber Line
ADSL Asynchronous Digital Subscriber Line ( modem )
ADT Abstract Data Type
ADTA Analog Design and Test Automation
ADU Analog-Digital-Umsetzer ( ADC )
AE Application Engineer
AEA American Electronic Association ( Washington DC )
AEA American Engineering Association ( Fort Worth TX )
AEC Acoustic Echo Cancellation
AEEC Airlines Electronic Engineering Committee
AEG Allgemeine Electricitäts-Gesellschaft ( Berlin, Germany )
AES Advanced Encryption Standard
AES Automatic Electronic Shutter
AESOP Application Engineering Support through Online Productivity ( BBS )
AF Audio Frequency
AFAIK As Far As I Know ( net slang )
AFC Alkaline Fuel Cell
AFC Automatic Frequency Control
AFE Analog Front End
AFEC Analog Front End Circuit
AFI Advanced Fulfillment Initiative ( IBM )
AFIC Analog Front end Integrated Circuit
AFLASH Audio-grade FLASH ( memory )
AFM Atomic Force Microscope
Ag Argentum [ Silber ]
AGC Automatic Gain Control
AGLV ArbeitsGemeinschaft Lampen-Verwertung
AGND Analog Ground
AGP Accelerated Graphics Port
AGV Automatic Guided Vehicle
AHB Advanced High-performance Bus
AHC Advanced High-speed CMOS
AHDL Altera Hardware Description Language
AHDL Analog Hardware-Description Language
AI Artificial Intelligence
AIC Analog In-Circuit ( test )
AIC Analog Interface Circuit
AIDA Aerosols, Interactions and Dynamics in the Atmosphere ( Forschungszentrum Karlsruhe Germany )
AILS Automatic Input Level Setting
AIM Attitude and Information Management ( subsystem, Pathfinder )
AIM Avalanche Induced Migration
AIME Air Interface Monitor Emulation ( software )
AIN Advanced Intelligent Network
AIS Alarm-Indication Signal ( ATM )
AIS Attribute Information Structure
AIT Advanced Intelligent Tape ( Sony )
AJ Anti-Jamming
AK Alaska
AKA Also Known As
AKD Any Key Down
AKF AutoKorrelationsFunktion
AKM Asahi Kasei Microsystems
Al Aluminium [ Element 13 ]
AL Alabama
AL América Latina
AL Arbitrated Loop
ALAP Appletalk Link Access Protocol [ the lowest-level protocol in the AppleTalk architecture, managing node-to-node delivery of frames on a single AppleTalk network ]
ALARA As Low As Reasonably Achievable ( radiation risk )
ALB Advanced Low-voltage BiCMOS
ALC Advanced Low-voltage CMOS
ALE Address Latch Enable ( µC signal )
ALF Advanced Library Format
AlGaN Aluminum Gallium Nitride
ALGOL ALGOrithmic Language
ALI Acer Laboratories Incorporated ( San Jose CA )
ALI Annual Limit on Intake [ the derived limit for the amount of radioactive material taken into the body of an adult by inhalation or ingestion in a year ]
ALIS Analog Line Interface Solution
ALM ATM-Layer Manager
ALN Adaptive-Logic Network
AlN Aluminum Nitride ( ceramic )
ALOHA Aboriginal Lands Of Hawaiian Ancestry ( movement )
ALS Advanced Light Source
ALS Advanced Low-power Schottky ( logic )
ALU Arithmetic Logic Unit
ALVC Advanced Low-Voltage CMOS
ALVCH Advanced Low-Voltage CMOS with bus-Hold
Am Americium [ Element 95 after the Americas ]
AM Active Matrix ( liquid-crystal display )
AM Amplitude Modulation
AM Ante Meridiem [ before noon ]
AM0 Air Mass 0 ( zero )
AMB Active Metal Brazing
AMBA Advanced Microcontroller Bus Architecture ( ARM )
AMBE Advanced Multi-Band Excitation ( speech-compression technique )
AMC Associative Memory Controller
AMC Australian Maritime College
AMCAM Addressing Mapping Content Addressable Memory
AMCC Applied Micro Circuits Corporation ( San Diego CA )
AMD Advanced Micro Devices ( Inc. Sunnyvale CA )
AMECA Automotive Manufacturers Equipment Compliance Agency
AMEL Active-Matrix ElectroLuminsescent ( display )
AMG Alternating Metal Ground ( architecture, Fairchild )
AMI Alternate Mark Inversion
AMI American Megatrends Incorporated
AMI American Microsystems Incorporated ( Pocatello ID )
AMLCD Active-Matrix Liquid Crystal Display
AMMPEC Advanced Materials and Manufacturing Processes for Economic Competitiveness ( organization New Mexico )
AMN Artifical Mains Network
AMP Attached Media Processor
AMPP Altera's Megafunction Partners Program
AMPS Advanced Mobile Phone Service
AMPS Automatic Minimization of Power through Sizing ( tool )
AMPSS Astec Modular Power Supply System
AMR Audio/Modem Riser ( card specification, Intel )
A/MS Analog/Mixed Signal ( design )
AMS Alarm Management System
AMS Analog-Mixed-Signal ( design )
AMTRI Advanced Manufacturing Technology Research Institute
ANI Anwendungszentrum Neuro-Informatik ( e.V. Schwerin Germany )
AMU Address Management Unit [ on the Macintosh II, handles only 24-to-32-bit address translation and is not a true memory management unit ]
ANI Automatic Number Identification
ANOVA Analysis Of Variance
ANRS Automatic Noise Reduction System
ANS Adaptive Noise Suppression
ANSI American National Standards Institute
AOI Automated Optical Inspection
AOQ Average Outgoing Quality
AOTF Acousto-Optic Tunable Filter ( dynamic spectral filter )
APB Advanced PCI Bridge
APB Advanced Peripheral Bus
APC Advanced Power Control
APCO Association of Public safety Communication Officials
APD Avalanche PhotoDiode
APDA Apple Programmers and Developers Association
APEC Applied Power Electronics Conference
API Application Programming Interface
APIC Advanced Peripheral Interrupt Controller
APL A Programming language
APLI Applications Programming Language Interface
APM Advanced Power Management
APMP Associação para a Promoção do Multimédia em Portugal
APS Active Pixel image Sensor
APS Advanced Planning and Scheduling
APS Associative Processor System
APSK Audio Phase Shift Keying
APT Advanced Power Technology ( Bend OR )
APU Associative Processing Unit
AQL Acceptable Quality Level
AQL Average Quality Level
Ar Argon [ Element 18 ]
AR Arkansas
ARAM Audio-grade dRAM
ARAS Anti-Reflective Anti-Static ( display )
ARB ARBitrary-waveform generator
ARCNET Attached Resource Computer local area NETwork
ARCOFI Audio Ringing COdec FIlter
ArF Argon Fluoride ( excimer laser for lithography )
ARIB Association of Radio Industries and Business
ARINC Aeronautical Radio INC ( airline consortium )
ARL Address Resolution Logic
ARM Advanced RISC Machines ( Ltd. Los Gatos CA; Cambridge UK )
ARN Atmospheric Radio Noise
ARO After Receipt of Order
ARP Address Resolution Protocol ( ATM )
ARPA Advanced Research Projects Agency ( of the U.S. Department of Defense )
ARPANET [ A wide area network that links government, academic, and industrial installations around the world ]
ARPES Angle-Resolved PhotoEmission Spectroscopy
ARPU Average Revenue Per User ( mobile phone )
ARQ Automatic Repeat reQuest
ARRL American Radio Relay League
ARS Agricultural Research Service
ARU Automatic Routing Unit
As Arsenicum [ Element 18 Arsenic Arsen ]
AS AblaufSprache ( SPS )
AS Advanced Schottky ( logic )
ASA Acrylnitril-Styrol-Acrylester ( Copolymer )
ASA American Standards Association
ASAM Association for Standardisation of Automation and Measurement systems
ASAP As Soon As Possible
ASCEND Altera/Synplicity Cooperative ENgineering Development
ASCI Accelerated Strategic Computing Initiative
ASCII American Standard Code for Information Interchange
ASD Application Specific Discrete
ASE Amplified Spontaneous Emission
ASE Association Suisse des Electriciens
ASHRAE American Society of Heating, Refrigeration, and Air conditioning Engineers
ASI Actuator Sensor Interface
ASIA Active Signal Integrity Architecture
ASIC Application-Specific Integrated Circuit
ASIP Application-Specific Intstruction-set Processor
ASL Arithmetic Shift Left ( assembler mnemonic )
ASK Amplitude Shift Keying
ASM Algorithmic State Machine
ASM ASynchronMaschine
ASME American Society of Mechanical Engineers
ASMW Amt für Standardisierung, Messwesen und Warenprüfung
ASP Addressable Scan Port ( SN74ABT8996 )
ASP Analog Signal Processor
ASP Application Service Provider
ASPI Advanced SCSI Programming Interface
ASR Arithmetic Shift Right ( assembler mnemonic )
ASR Automatic Speech Recognition
ASRAM Asynchronous SRAM
ASRS Aviation Safety Reporting System
ASSET Advanced Support System for Emulation and Test
ASSP Application-Specific Signal Processor
ASSP Application-Specific Standard Product
ASTA Association of Short-circuit Testing Authorities
ASTEC Advanced Solar Turbo-Electric Conversion
ASTM American Society for Testing and Materials
ASTRIC Application Specific Transmit and Receive Integrated Circuit
ASVD Analog Simultaneous Voice and Data ( standard V.61 )
At Astatum [ Element 85 Astatine Astat]
ATA AT-bus Attachment [ mobile version of IDE ]
ATAPI AT Attachment Packet Interface [ IDE standard ]
ATC Address Translation Controller ( ATM )
ATCS Advanced Time Channel Selection
ATDA Agena Target Docking Adapter
ATDNet Advanced Technology Demonstration Network ( OC-48 2.4 Gbps )
ATE Automatic Test Equipment
ATG Automatic Test Generation
ATIS Air-Travel Information System
ATM Adobe Type Manager
ATM Asynchronous Transfer Mode
ATML ATM Limited ( Santa Clara CA )
ATN Attention
ATP Advanced Technology Program
ATP Appletalk Transaction Protocol [ An AppleTalk protocol that's a Datagram Delivery Protocol (DDP) client ]
ATP Available To Promise
ATPG Automatic Test-Pattern Generation
ATPG Automatic Test Program Generator
A/T QRE Assembly/Test Quality and Reliability Engineering
ATS Applications Technology Satellite
ATS Audio Test System
ATS Automatic Tuning amd Sort ( TV )
ATSC Advanced Television Systems Committee
ATSDR Agency for Toxic Substances and Disease Registry
ATT Avalanche Transit Time ( diode )
ATU-R ADSL Termination Unit Residential part
ATV Advanced TeleVision [ high-definition television ]
ATVG Automatic Test Vector Generation
Au Aurum [ Element 79 Gold ]
AUI Animation User Interface
AUI Access Unit Interface
AUI Attachment Unit Interface ( IEEE802.3 )
AUI Auxiliary Unit Interface
AUMA Austellungs- Und MesseAuschuß ( der deutschen Wirtschaft e.V. )
AVC Automatic Volume Control
AVG Audio, Video, and Graphics ( decoder )
AVI Advanced Vehicle Identification
AVI Analog VHDL International ( standards group )
AVIP Audio-Visual Intellectual Property [ technology standard for networking consumer electronics and Internet appliances ]
AVL Approved Vendor List
AVL Automatic Vehicle Locator
AWE Asymptotic Waveform Evaluation
AWG American Wire Gauge
AWG Arbitrary Waveform Generator
AWL AnWeisungsListe ( SPS )
AWT Abstract Windowing Toolkit ( Java )
AZ Arizona
B Borum [ Element 5 Boron Bor ]
B8ZS Binary 8(eight) Zero Suppression
Ba Barium [ Element 56 ]
BABT British Approvals Board for Telecommunications
BAHAMA Broadband-Adaptive-Homing-ATM Architecture
BALUN BALanced-to-UNbalanced
BAM Block Allocation Map
BAPCO Business Applications Performance COrporation ( Santa Clara CA )
BAPT BundesAmt für Post und Telekommunikation
BAS Bachelor of Applied Science
BASDA British Accounting Software Developers Association
BASEC British Approvals Service for Electric Cables
BASEEFA British Approvals Service for Electrical Equipment in Flammable Atmospheres
BASIC Beginner's All-purpose Symbolic Instruction Code
BAW Bulk Acoustic Wave ( device )
BBAN Basic Bank Account Number
BBC British Broadcasting Corporation ( http://www.bbc.co.uk/ )
BBC Brown Boveri & Company ( Baden Switzerland, now ABB )
BBD Block-Based Design
BBD Bucket Brigade Device
BBM Break Before Make
BBS Bulletin Board Service
BBT Bit-Block Transfer
BBU Bob Bailey Unit [ a custom gate-array chip on the Macintosh SE that handles RAM, video, sound, etc. ]
BC Behavorial Compiler
BCC Block Check Character
BCAST Buried Charge Accumulator and Sensing Transistor ( array )
BCCD Bulk Charge Coupled Device
BCD Binary-Coded Decimal
BCI BroadCast Interference
BCJR Bahl, Cocke, Jelink, and Rajiv ( algorithm )
BCM BroadCast Manager ( LANE )
BCMD Bulk Charge Modulated Device
BCS Board Control System
BCT BiCMOS Technology
BCTM Bipolar/BiCMOS Circuits and Technology Meeting
BDD Binary Decision Diagram
BDI Bundesverband der Deutschen Industrie
BDLC Byte-Data-Link Communication
BDM Background Debug Mode
BDS Battery Disconnect Switch
Be Beryllium [ Element 4 ]
BEAB British Electrotechnical Approvals Board
BEE Bachelor of Electric Engineering
BEF Brightness Enhancement Filter ( LCD )
BEI Back-scattered Electron Imaging
BEL BELl ( ASCII control code )
BEM Boundary Element Method
BeO Beryllium Oxide ( ceramic )
BEP BauEinheitenPrinzip
BER Bit-Error Rate
BERT Bit-Error-Rate Test
BES BauEinheitenSystem
BES Business Execution System
BEST Berkeley Embedded Systems Team ( BSDI )
BFD Binary File Descriptor
BFM Bus Functional Model ( emulator )
BFO Beat-Frequency Oscillator
BFSK Binary Frequency Shift Keying
BFSL Best-Fit Straight Line ( error measurement )
BGA Ball Grid Array
BGI Borland Graphics Interface
BGO BackGround Operation
Bh Bohrium [ Element 107 after Niels Bohr ]
BH Bus Hold
BHT Branch History Table
Bi Bisemutum [ Element 83 Bismuth Wismut ]
BiASIC Bipolar ASIC
BIC Bank Identifier Code
BiCMOS Bipolar CMOS
BILBO Built-In Logic-Block Observer
BION Believe It Or Not
BIOS Basic Input/Output System
BIP Bit-Interleaved Parity
BIPS Billion Instructions Per Second
BIST Built-In Self-Test
BISYNC Binary Synchronous Communication
BIT Binary digIT
BIT Built In Testability
BITE Built-In Test Equipment
BIU Bus Interface Unit
BJT Bipolar Junction Transistor
Bk Berkelium [ Element 97 after the city of Berkeley, California ]
BKP BauKastenPrinzip
BLAS Basic Linear-Algebra Subprogram
BLAST Bell Labs lAyered Space-Time ( wireless technique )
BLDA Bell Labs Design Automation ( group )
BLER BLock-Error Rate
BLIP Background-Limited Infrared Photodetector
BLOB Binary Large OBject
BLP Bottom Leaded Plastic package
BLS Bureau of Labor Statistics
BLT BLock Transfer
BLT Bondline Thickness
BM Black Matrix
BMA BundesMinisterium für Arbeit und soziale Ordnung
BMBF BundesMinisterium für Bildung und Forschung
BMC Burst Mode Controller
BMDO Ballistic Missile Defence Organisation
BML Burst-Mode Logic ( DECT )
BMPT BundesMinisterium für Post und Telekommunikation
BMSR BetriebsMess-, Steuerungs- und Regelungstechnik
BMU Bit Manipulation Unit
BNC Bayonet Navy Connector
BNC Bayonet Neill Concelman ( connector )
BNC Bayonet Nut Connector
BNCT Boron Neutron Capture Therapy
BOB BreakOut Box
BOM Bill Of Materials
BOPS Billion Operations Per Second
BORSHT Battery, Overvoltage protection, Ringing, Supervision, Hybrid, Testing
BOS Battery Operating System
BOSFET Bidirectional MOSFET
BPD Buried PhotoDiode
BPI Bits Per Inch
BPP Bits Per Pixel
bps bits per second
BPSK Binary Phase-Shift Keying
BPU Boundary-Processing Unit
BPV Backward Propagation of Variance
Bq Becquerel [ Radioaktivität, 1 Bq = 1 / s ]
Br Bromum [ Element 35 Bromine Brom ]
BR Backward Reporting ( ATM )
BR Billing Rate
BRAM Burst RAM
BRAN Broadband Radio Access Network
BRD BundesRepublik Deutschland
BRG Baud Rate Generator
BRI Basic Rate Interface ( ISDN )
BRT Behavioral ReTiming
BRT Bias-Resistor Transistor
BS Back Space ( ASCII control code )
BSC Bachelor of SCience
BSC Binary Synchronous Communication [ a type of protocol developed by IBM that uses synchronization of characters to control the transfer of data over communication lines. Also referred to as bi-sync communication ]
BSC Boundary-Scan Cell ( JTAG )
BSD Berkeley Software Distribution [ a version of the UNIX operating system developed at the University of California at Berkeley ]
BSDI Berkeley Software Design Inc. ( Colorado Springs CO )
BSDL Boundary Scan Description Language
BSI British Standards Institute
BSI Bundesamt für Sicherheit in der Informationstechnik
BSR Boundary-Scan Register ( JTAG )
BSRAM Bank-Switchable Random Access Memory
BST Barium-Strontium-Titanate
BST Boundary-Scan Test
BSY Busy
BT British Telecommunications ( plc )
BTA Bus Termination Array
BTB Branch Target Buffer
BTDL Bus Transaction Description Language
BTF Byte Times per Frame
BTI Batterie Technologies Inc. ( Ontario, Canada )
BTL Backplane Transceiver Logic
BTL Bridge-Tied Load ( amplifier )
BTL/FB Backplane Transceiver Logic/FutureBus
BTO Built To Order
BTS Base Transceiver Station
BTU British Thermal Unit
BTW By The Way ( net slang )
BUND Bund für Umwelt und Naturschutz Deutschland ( e.V. Bonn Germany )
BUS Broadcast and Unknown Server ( LANE )
BUT Board Under Test
BV Bureau Veritaas
BVA British radio Valve manufacturers' Association
BVBS BundesVereinigung der BauSoftwarehäuser ( Germany )
BVIT BundesVerband InformationsTechnologien ( e.V. Germany )
BW BandWidth
BWA Broadband Wireless Access
BWO Backward-Wave Oscillator
BZT Bundesamt für Zulassung in der Telekommunikation
c centi ( 10^-2 )
C Carbonium [ Element 6 Carbon Kohlenstoff ]
C Coulomb ( electrical charge )
C/D Control/Data
C/N Carrier to Noise ( ratio )
Ca Calcium [ Element 20 Kalzium ]
CA California
CA CelluloseAcetat
CA Certificate Authority
CA³D Coherent-Adaptive-Antenna-Array Diversity
CAA Civil Aviation Authority ( UK )
CAAA Channel-Aggregation Access Arrangement
CAAA Clean Air Act Amendments
CAAG Compound Average Annual Growth
CAB CelluloseAcetoButyrat
CAC Compact Anechoic Chamber ( EMC )
CACSE Computer-Aided Control System Engineering
CAD Computer Aided Design
CAE Computer Aided Engineering
CAGR Compound Annual Growth Rate
CAI Computer-Aided Instruction [ the use of a computer to help teach people through interaction with educational software ]
CAID Computer Aided Instrument Design
CAIRN Collaborative Advanced Interagency Research Network
CAIS Catalyst Adsorptive Insulator Semiconductor
CAIST Center for Advanced Science and Technology ( Troy NY )
CAL CAN Application Layer
CAL Clocked Adiabatic Logic
CAL Common Application Language
CAL Controlled Axial Lifetime ( diode )
CALEA Communications Assistance for Law Enforcement Act
CALL Control Application Link Layer
CALTECH CALifornia institute of TECHnology ( Pasadena CA )
CAM Computer-Aided Manufacturing
CAM Content Addressable Memory
CAMAC Computer-Aided Measurement and Control
CAN CANcel ( ASCII control code )
CAN Controller Area Network
CAN OPUS CAN OPen User System ( protocol )
CAP Carrierless Amplitude and Phase ( modulation )
CAP/QAM Carrierless Amplitude Phase modulation/Quadrature Amplitude Modulation
CAP CTM Access Profile ( DECT )
CAPD Computer Automated Performance Data
CAPE Copmputer Aided Production Engineering
CAPI Common Application Programming Interface
CAPI Common-ISDN Application Programming Interface
CAPRI Code Address Private Radio Intercom
CAPS Computer Aided Polymer Selection
CARES Customer Automated REplenishment System
CART Classification And Regression Tree ( neural network )
CAS Column Address Strobe
CAS CPE Alerting Signal
CASE Computer-Aided Software Engineering
CAT Computer-Aided Test
CAT Computerized Axial Tomography ( medical diagnostics )
CATV CAble TeleVision
CATV Community Antenna TeleVision
CAV Constant Angular Velocity
CAVE Computer Assisted Virtual Environment
CAVERN CAVE Research Network
CAW Control of Asbestos at Work
CB Certification Board
CB Citiziens Band
CB Competent Body ( EMC directive )
CB Complementary-Bipolar ( process )
CBA Cell-Based Array
CBB Configurable Building Block ( FPGA )
CBC Complementary-Bipolar CMOS ( process )
CBC Cypher Block Chaining
CBE Circuit Breakers for Equipment
CBEMA Computer and Business Equipment Manufacturers Association
CBEMA/ITIC Computer Business Equipment Manufacturers Association/Information Technology Industry Council
CBGA Ceramic Ball Grid Array
CBGA Chip-scale Ball Grid Array
CBI Circuit Board Indicator
CBIC Cell-Based Integrated Circuit
CBIC Complementary Bipolar Integrated Circuit
CBIRS Content-Based Image Retrieval System
CBL Cadence Berkeley Labs
CBR Constant Bit Rate ( ATM )
CBS Cycle-Based Simulation
CBT Computer-Based Training
CBT CrossBar Technology ( switch )
CBU Costumization Business Unit
CC Call Center
CC Client Company
CC Closed Captitioning ( TV )
CC Call Center
CCA Clear Channel Assessment ( IEEE-802.11 )
CCC Component Communication and Coordination ( ASAM )
CCC Copyright Clearance Center ( Inc. Danvers MA )
CCD Charge-Coupled Device
CCE Configurable Combinatorial Element ( FPGA )
CCF Cross-Correlation Function
CCFL Cold Cathode Fluorescent Lighting/Lamp
CCFT Cold Cathode Fluorescent Tube
CCIC Commitee on Computing, Information, and Communications
CCIF Comité Consultatif International Fonique (téléphonique)
CCIR Comité Consultatif International des Radiocommunications
CCIT Comité Consultatif International Télégraphique
CCITT Comité Consultatif International Téléphonique et Télégraphique
CCITT Consultative Committee on International Telephone and Telegraph
CCCN Customs Harmonised Commodity Code
CCM Configurable Controller Methodology
CCM Continuous Conduction Mode ( SMPS )
CCN Center for Civic Networking
CCO Cisco Connection Online ( Cisco Systems, San Jose CA )
CCO Current-Controlled Oscillator
CCP Consumer Controller Processor ( Zilog )
CCPIT China Council for the Promotion of International Trade
CCR Current Cell Rate ( ATM )
CCS Common Channel Signalling
CCS Computerized Charging System
CCS Continuous Commercial Service
CCSL Compatible Current Sinking Logic
CCSN Common Channel Signalling Network
CCSTN Color Codes Super Twisted Nematic ( LCD )
CCTV Closed-Circuit TeleVision
CC/VL Constant Current - Voltage Limited ( power supply )
CCW CounterClockWise
cd candela
Cd Cadmium [ Element 48 Kadmium ]
CD Compact Disk
CDA Controller Desktop Advisor
CDAM Cordless Digital Answering Machine
CDC Centers for Disease Control and Prevention
CDC Clock Distribution Circuit
CDD polyChlorinated Dibenzo-para-Dioxin
CDDI Copper-based Distributed Data Interface ( FDDI over STP )
CDDM Clock Driven Design Methodology
CDE Common Desktop Environment
CDF Cumulative Distribution Function
CDF polyChlorinated DibenzoFuran
CDFG Control-Data Flow-Graph ( format )
CDI Capacitive Discharge Ignition
CDI Collector Diffusion Isolation ( transistor )
CD-I Compact Disc Interactive
CDIP Ceramic Dual In-line Package
CDL Capacitance-Driven Layout
CDL Copper Data Link
CDL Core-Diode Logic
CDLC Connected Device Limited Configuration ( mobile phone )
CDM Charged Device Model ( ESD )
CDM Code Division Multiplex
cd/m² candelas per square meter
CDMA Code-Division Multiple-Access
CDPD Cellular Digital Packet Data
CDR Clock and Data Recovery
CDR Computer Disaster Recovery
CD-R CD Recordable
CDRH Center for Devices and Radiological Health
CD-ROM Compact Disk-Read Only Memory
CD-RW Compact Disc ReWritable
CDS Correlated Double Sampling
CDSL Consumer Digital Subscriber Line ( Rockwell )
cDSP customizable DSP
CDT Cambridge Display Technology ( Inc. Cambridge England )
CDVT Cell Delay Variation Tolerance ( ATM )
CDW Computer Discount Warehouse
Ce Cerium [ Element 58 Zer ]
CE Chip Enable
CE Clear Entry ( key )
CE Conformité Européene / Certified Europe
CE Contract Engineer
CEA Components for Evaluation and Analysis ( ASAM )
CEBEC Comité Electrotechnique Belge
CECC CENELEC Electronic Components Committee
CEG Consumer Electronics Group ( EIA )
CEI Cabin Equipment Interface
CEL California Eastern Laboratories ( Santa Clara )
CELP Card Edge Low Profile
CELP Code Excited Linear Prediction
CEM Contract Electronics Manufacturer
CEM Conventional Electron Microscope
CEMA Consumer Electronics Manufacturers Association
CEN Comité Européen de Normalisation
CENELEC Comité Européen de Normalisation Electrotechnique
CEO Chief Executive Officer
CerDIP Ceramic Dual In-Line Package
CERMET CERamic METal ( compound used with trim pots )
CES Consumer Electronics Show ( Las Vegas )
CETI Communication with Extra-Terrestrial Intelligences
CETRA China External TRAde development center ( Taiwan )
Cf Californium [ Element 98 after California ]
CF CompactFlash ( card )
CFA CompactFlash Association
CFA Current Feedback Amplifier
CFAR Constant False-Alarm Rate ( RADAR )
CFB Complex Functional Block ( ASSP )
CFC ChloroFluoroCarbon
CFC Continuous Function Chart
CFC Current-to-Frequency Converter
CFD Computational Fluid Dynamics
CFE ConFiguration Enable ( GPIB )
CFI Common Flash memory Interface
CFL Cold Cathode Fluorescent Lighting
CFM Cubic Feet per Minute
CFO Chief Financial Officer
CFR Code of Federal Regulations
CFR Cooperative Fuel Research ( Motor )
CFS Color Field Sequential ( technique in LCoS displays )
CG Centre of Gravity
CG Character Generator
CGA Colour Graphics Adapter
CGC Clock Generator Circuit
CGI Common Gateway Interface
CGK Computer Gesellschaft Konstanz ( mbH Konstanz Germany )
CGPM Conférence Générale des Poids et Mesures
cgs centimeter-gramm-second ( units system )
CGS Clock Generation and Support
CH Contract House
CHAP Challenge Handshake Authentication Protocol
CHDS Chip Hierarchical Design System
CHE Channel-Hot-Electron ( injection )
CHeX Confined Helium eXperiment ( Stanford University, Stanford CA )
CHI Concentration Highway Interface
ChLCD Cholesteric Liquid Crystal Display
CHMSL Center High-Mounted Stop Lamp
CHRP Common Hardware Reference Platform ( PowerPC )
CiA CAN in Automation ( e.V. Erlangen Germany )
CIC Communications Intelligence Corporation ( Redwood Shores CA )
CICC Custom Integrated Circuits Conference
CID Caller ID
CID Charge-Injection Device
CID Computer Integrated Design
CIDCW Calling Identity Delivery on Call Waiting
CIE Computer-Integrated Engineering
CIEE China International Electronics Exhibition
CIF CalTech Intermediate Format
CIF Cell-In-Frame ( ATM )
CIF Common Interface Format ( 352 by 288 pixels )
CII Communications Instruments Incorporated ( Fairview NC )
CILAP Consortium for Intelligent Large-Area Processing
CIM Computer Integrated Manufacturing
CIMID Chip In Molded Interconnection Device
CIMS Commercial Informations Management System
CIMS Component Information Management System
CIO Chief Information Officer
CIPSU Computer Industry Project of Stanford University
CIS Card Information Structure ( PCMCIA )
CIS Contact Image Sensor
CIS Copper-Indium di-Selenide ( technology )
CIS Custom Integrated Services
CISC Complex Instruction Set Computer
CISPR Comité International Spécial de Perturbations Radioélectriques
CITB Construction Industry Training Board
CITEL Comisión Interamericana de Telecomunicaciones
CITI Center for Information Technology Integration ( University of Michigan in Ann Arbor )
CITS Centro Internacional de Tecnología de Software ( Curitiba Brazil )
CJC Cold Junction Compensation
Cl Chlorum [ Element 17 Chlorine Chlor ]
CLA Control Law Accelerator
CLAW Control of Lead At Work
CLB Configurable Logic Block ( FPGA )
CLC Configurable Logic Cell ( FPGA )
CLCC Ceramic Leadless Chip Carrier
CLEC Competitive Local-Exchange Carrier
CLIW Configurable Long Instruction Word
CLIX Competitive Local Inter-eXchange ( operator )
CLK Clock
CLL Capacitor Long Life ( concept )
CLP Cell Loss Priority ( ATM )
CLUT Color Look-Up Table
CLV Constant Linear Velocity
Cm Curium [ Element 96 after Marie and Pierre Curie ]
CM Cable Modem
CMA Ceramic Multilayer Actuators
CMC Common Mezzanine Card
CMC Corporate Management Committee ( IBM )
CMD Charge-Modulation Device
CMD Command
CMD Cross-Modulation Distortion
CMF Current-Mode Feedback
CMG Compter Marketing Group ( Avnet )
CMI Code Mark Inversion
CMIC Coherent-Multistage-Interference Cancellation
CMIP Common Management Information Protocol ( network )
CML Current-Mode Logic
CMM Capability Maturity Model
CMOS Complementary Metal-Oxide Semiconductor
CMP Chemical Mechanical Polishing
CMR Common-Mode Rejection
CMRR Common-Mode Rejection Ratio
CMS Corporate Management System ( MentorGraphics )
CMTS Cable Modem Termination System
CMVC Configuration Management and Version Control ( tool )
CMV Common-Mode Voltage
CMVR Common-Mode Voltage Range
CMY Cyan, Magenta, Yellow ( color scheme )
CMYK Cyan, Magenta, Yellow, blacK ( color scheme )
Cn Copernicium [ Element 112 after Nicolaus Copernicus ]
CNAM Caling Name delivery
CNC Computerized Numerical Control
CND Calling Number Delivery
CNDA Corporate Non-Disclosure Agreement
CNE Certified Network Engineer
CNR Carrier-to-Noise Ratio
CNR Communication Networking Riser ( card specification, Intel )
Co Cobaltum [ Element 27 Cobalt Kobalt ]
CO Central Office
CO Colorado
CO Crystal-controlled Oscillator
COA Certificate Of Authenticity
COAST Cache On A Stick
COB Chip-On-Board ( technology )
COB Communicating OBject
CoBALT Concurrent Broadcast Array Logic Technology ( design verification system )
COBOL COmmon Business Oriented Language
COD Cash On Delivery
COD Catastrophic Optical Damage ( laser device failure mechanism )
CODEC Coder/Decoder
COFDM Coded Orthogonal Frequency-Division Multiplex ( digital broadcast television )
COFF Common Object File Format
COG Center Of Gravity
COG Chip-On-Glas ( LCD )
COLIDAR COherent-LIght Detection And Ranging
COM Center for Optic Manufacturing ( at Ney York's University of Rochester )
COM Component Object Model
COMPANDER COMpressor-ExPANDER
CONELRAD CONtrol of ELectromagnetic RADiations
COO Chief Operating Officer
COOTS Conference on Object-Oriented Technologies and Systems
COP Coefficient Of Performance
COPIS COnnector Product Information System ( Berg )
COPS Calculator Oriented Processor System
CORBA Common Object Request Broker Architecture
COS Card Operating System
COS Corona Oxyde Semiconductor ( technology )
COSPAR COmmitee on SPAce Research
COSSH Control Of Substances Hazardous to Health ( regulations )
COTS Commercial Off The Shelf
CP CellulosePropionat
CPCI CompactPCI
CPE Customer Premise Equipment
CPEM Conference on Precision Electromagnetic Measurements ( July 1998 Washington D.C. )
CPFSK Continuous Phase Frequency-Shift Keying
cpi characters per inch
CPI Customer Price Index
CPIA Colorado Photonics Industry Association ( Denver CO )
CPLD Complex Programmable Logic Device
CPM Communication Port Manager
CPM Communications Processor Module
CPM Critical Path Method [ Netzplantechnik ]
CP/M Control Program for Microcomputers
CPNM Calling Party Number Message
CPP Communications-Protocol Processor
CPP CP Protocol
CPSC Consumer Product Safety Commission
CPTC Ceramic Positive Teperature Coefficient ( device )
CPTWG Copy Protection Technical Working Group
CPU Central Processing Unit
CPW CoPlanar Waveguide
CQFP Ceramic Quad Flat Pack
Cr Chromium [ Element 24 Chrom ]
CR Carriage Return ( ASCII control code )
CR Certificate Request
CR Chlorophene Rubber
CRADA Cooperative Research And Development Agreement
CRC Cyclic Redundancy Check
CRL Certificate Revocation Lists
CRM Customer Relationship Management
CRP Cathode Ray Panel
CRS Carrier-Sense ( signal )
CRT Cathode-Ray Tube
CRU Clock-Recovery Unit
Cs Caesium [ Element 55 Zäsium ]
CS Card Services
CS Chip Select
C/S Client/Server ( system )
CSA Canadian Standards Association
CSA Canadian Standards Authority
CSA Carrier-Serving Area
CSA Communication Signal Analyzer
CSAM C-mode Scanning Acoustic Microscope
CSC Color Screen Controller
CSC Customer Solution Core
CSCO Consolidated Space Operations Center ( Colorado Springs )
C-SCPI Compiled SCPI
CSD Canonically Signed Digit ( code )
CSE Configurable Sequential Element ( FPGA )
CSEM Center Suisse d'Electrotechnique et de Microtechnique ( SA Neuchâtel Switzerland )
CSI Color-Sequential Imaging ( LCD )
CSL Computer Science Laboratory ( Xerox PARC )
CSL Current-Sinking Logic
CSM Cell Site Modem
CSM Component and Supplier Management
CSM Chartered Semiconductor Manufacturing ( Ltd. Singapore )
CSMA/CA Carrier Sense Multiple Access, Collision Avoidance
CSMA/CD Carrier Sense Multiple Access, Collision Detect
CSMA/CR Carrier Sense, Multiple Access, with Collision Resolution
CSN Circuit Switched Network
CSOA Chopper-Stabilized Operational Amplifier
CSP Chip-Scale Package
CSP Chip-Sized Package
CSP Cooperative Software Partners ( program )
CSP Customizable Standard Product
CSPD Communication-Signal-Path-Design ( methodology )
CSR Capacitor Start and Run ( motor )
CSR Control and Status Register
CSS Channel Sequence Simulation
CSS Content Scrambling System
CSTN Color SuperTwisted Nematic ( LCD )
CSU Channel Service Unit
CSV Comma Separated Values
CS-ZVS Current-Synchronous Zero-Voltage Switching
CT Computer Telephony
CT Computed Tomography
CT Connecticut
CT Cordless Telephone
CTA Crack Tolerant Alumina ( ceramic )
CTC Counter/Timer Circuit
CTE Coefficient of linear Thermal Expansion
CTG sense and Compare Timing Generator
CTI Chromatic Technologies Incorporated ( Franklin MA )
CTI Computer Telephony Integration
CTIA Cellular Telecommunications Industry Association
CTL Complementary Transistor Logic
CTM Configurable Timer Module
CTM Cordless Terminal Mobility ( DECT )
CTO Chief Technical Officer
CTR Common Technical Regulation
CTR Current Transfer Ratio
CTR Current Transformer Ratio
CTRON Commercial TRON
CTS Clear To Send
CTS Component Transaction Server
CTSD Continuous Time Sigma Delta ( AD Converter )
CTU Caribbean Telecomunication Union
Cu Cuprum [ Element 29 Copper Kupfer ]
CUT Component Under Thermostasis
CV Centrafour Vertical
CVBS Composite Video Blanking Signal
CVC Common Vision Concept
CVD Chemical Vapor Deposition
CVE Co-Verification Environment ( Mentor Graphics )
CVI Complete Vertical Integration
CVRT Cell Variation Recognition Technology
CVSD Continuous-Variable-Slope Delta ( modulation )
CVT Current Value Table
CW Continuous Wave
CWT Center Wing fuel Tank
d deci ( 10^-1 )
DA Destination Address
DA Digital Audio
D/A Digital-to-Analog
DAA Data Access Adapter [ a telephone line interface ]
DAA Data Access Arrangement
DAA Deutsche Angestellten Akademie ( Hamburg Germany )
DAB Data-Acquisition Board
DAB Digital Audio Broadcasting
DAC Data Access Console
DAC Design Automation Conference
DAC Digital-to-Analog Converter
DA&C Data Acquisition & Control
DAD Dual-Action Device
DAG Data-Address Generator
DALI Digital Addressable Lighting Interface
DAM DECT Authentication Module
DAM Digital Answering Machine
DAML Digital Added Main Line
D-AMPS Digital Advanced Mobile cellular-Phone Service
DAO Data Access Objects
DAP Data-Acquisition Processor
DAQ Data AcQuisition
DARC Deutscher Amateur-Radio-Club ( e.V. http://www.darc.de/ )
DARPA Defense Advanced Research Projects Agency
DAS Data Acquisition System
DAS Dual Attach Station ( network )
DASC Design Automation Standardization Committee
DASK Digital Amplitude Shift Keying
DAT Design Analysis Tool
DAT Digital Audio Tape
DATAR Délégation à l'Aménagement du Territoire et à l'Action Régionale [ Französische Raumordungsbehörde ]
DATE Design, Automation, and Test in Europe [ Europe's annual showcase for electronic system design and test, 2000 Paris ]
DAU Data Acquisition Unit
DAU Digital-Analog-Umsetzer ( DAC )
DAV DAta Valid ( GPIB )
DAvE Digital Application virtual Engineer ( Infineon Siemens )
DAVIC Digital Audio-VIsual Council
DAVID Digital Audio/Video Interactive Decoder
dB deciBel
Db Dubnium [ Element 105 after the town of Dubna / Дубна ]
dBc deciBels relative to carrier power
dBFS deciBels relative to Full Scale
dBm deciBels relative to 1 milliwatt
DBM Digital Bus Monitor
DBMS DataBase Management System
DBP Dynamic Bi-directional Power
DBPSK Differential Binary Phase-Shift Keying
DBS Direct Broadcast by Satellite
DBU Display Business Unit ( IBM )
DC Direct Current [ normally means a voltage or current which remains constant ]
DC District Columbia
DC1 Device Code 1 ( ASCII control code )
DC2 Device Code 2 ( ASCII control code )
DC3 Device Code 3 ( ASCII control code )
DC4 Device Code 4 ( ASCII control code )
DCASP Digitally Controlled Analog-Signal Processing
DCB Device Control Block
DCB Direct Copper Bonding
DCCH Digital Control Channel
DCD Data Carrier Detect
DCE Data Communications Equipment ( MODEM, peripheral )
DCE Distributed Computing Environment ( OSF )
DCI Display-Control Interface
DCM Design Chain Management
DCM Discontinuous Conduction Mode ( SMPS )
DCME Digital Circuit Multiplication Equipment
DCOM Distributed Component Object Model
DCOM Distributed COmputing Model
DCR Direct-Conversion Receiver
DCRS Distributed Controlling, Regulation and Supervision
DCS Delay Calculation System ( OVI )
DCS Digital Cellular System
DCS Digitally Coded Squelch
DCS Digital Control System
DCS Distributed Control System
DCS Dynamic Channel Selection
DCT Direct Cosine Transform ( MPEG )
DCTL Direct Coupled Transistor Logic
DCXO Digital Controlled Xtal (=crystal) Oscillator
D&D Drag and Drop
DDC Digital Down Converter
DDC Direct Digital Control
DDC Display Data Channel ( VESA Standard )
DDD Daily Direct Delivery
DDE Dynamic Data Exchange ( Windows )
DDFS Direc Digital Frequency Synthesizer
DDI Direct Draw Interface
DDK Driver Development Kit
DDL Device Description Language
DDM Device Driver Module
DDM Driver Descriptor Map
DDN Defense Data Network [ a single, wide area, packet-switching network that integrates the ARPANET research network and the MILNET defense network ]
DDP Datagram Delivery Protocol [ an AppleTalk protocol managing socket-to-socket delivery of datagrams over a networking system ]
DDP Double Detect and Protect
DDP Dynamic Distribution Planner
DDR Deutsche Demokratische Republik
DDR Double Data Rate ( DRAM )
DDRR Directional Discontinuity Ring Radiator
DDS Digital Data Service
DDS Direct Digital Synthesis
DDS Dynamic Deployment Scheduler
DDST Data-Driven Self-Timing ( register )
DDTN Domain-Divided Twisted-Nematic ( LCD )
DDVT Dynamic Data Visualization development Tool
DDWG Digital Display Working Group
DEC Digital Equipment Corporation ( Hudson MA )
DECC Drug Effects Clinical Chemistry
DECT Digital European Cordless Telephone ( 1.88-1.90 GHz )
DECT Digitally Enhanced Cordless Telephone
DECUS Digital Equipment Computer Users Society
DEF Design-Exchange Format
DEG Debug Event Generation
DEL Delete ( ASCII control code )
DELTIC Delay-Line Time Compression
DEM Dynamic Element Matching
DEMKO Danmarks Elektriske Materielkontrol
DEMUX Demultiplexer
DEP Debug Event Processing
DEP Department of Environmental Protection
DERA Defense and Evaluation Research Agency ( UK government )
DES Data Encryption Standard
DESC Defense Electronics Supply Center ( Dayton OH )
DFB Distributed FeedBack ( laser )
DFC Data-Flow Controller
DFE Decision Feedback Equalizer
DFE Digital Front End
DFE Design For the Environment
DFF D type Flip-Flop
DFG Deutsche ForschungsGemeinschaft
DFM Design For Manufacturability
DFN Deutsches ForschungsNetz
DFPC Digital Frequency-Phase Comparator
DFQ Design For Quality
DFT Design For Testability
DFT Discrete Fourier Transform
DFÜ DatenFernÜbertragung
DG LILET Double-Gate Lateral-Inversion-Layer Emitter Transistor
DGM Data Grade Media
DGO Deutsche Gesellschaft für Galvano- und Oberflächentechnik
DGPS Differential Global Positioning System
DGQ Deutsche Gesellschaft für Qualität ( e.V. Frankfurt Germany )
DGzRS Deutsche Gesellschaft zur Rettung Schiffbrüchiger
DHCP Dynamic Host Configuration Protocol
DHCP Dynamic Host-Control Protocol
DHHS Department of Health and Human Services
DHTML Dynamic HTML
DI Dielectric Isolation
DIB Device Information Block
DIC Differential Interference Contrast ( optical inspection )
DIE Device Information Exchange ( format )
DIHT Deutscher Industrie- und HandelsTag
DII Dynamic Invocation Interface
DIL Dual-In-Line ( package )
DIMM Dual-in-Line Memory Module
DIN Deutsches Institut für Normung / Deutsche Industrie-Norm
DIO Data Input Output ( GPIB )
DIP Dual-In-line Package
DIS Draft International Standards
DIVA Dynamic Interprocessor Voice Allocation
DIY Do-It-Yourself
DK DezimalKlassifikation
DKD Deutscher KalibrierDienst ( PTB )
DL DataLogging
DLC Data Link Control ( layer )
DLC Digital Loop Carrier
DLCI Data-Link-Connection Identifier
DLE Data Link Escape ( ASCII control code )
DLIF Double-Low-IF ( receiver )
DLL Data Link Layer ( network )
DLL Dynamic Link Library ( Windows )
DLP Device-Level Placer
DLP Digital Light Processing ( technology )
DLR Direct Labor Rate
DLT Digital Linear Tape ( Quantum )
DLVA Detector Logarithmic Video Amplifier
DMA Deadline Monotonic Analysis
DMA Direct Memory Access
DMAG Deutsche Messe AktienGesellschaft ( Hannover Germany )
DMAG Dynamic Micro Architecture Generation
DMASS Distributors' and Manufacturers' Association of Semiconductor Specialists
DMB Digital Media Broadcast
D-MCA Digital MultiChannel Access
DMCC Digital Modular Computing Components ( DEC )
DMD Digital Micromirror Device
DME DiMethyl Ether
DMGH Double Metal Guest Host ( LCD module )
DMI Desktop Management Interface
DMM Digital MultiMeter
dmmv deutscher multimedia verband ( Germany )
DMOS Double-diffused Metal-Oxide Semiconductor
DMS DehnungsMessStreifen
DMT Discrete Multi-Tone
DMTF Desktop Management Task Force
DMU Digital MockUp ( product simulation )
DNA Deutscher NormenAusschuss
DNC Direct Numerical Control
DNL Differential Non-Linearity
DNL Dynamic Noise Limiter
DNL Dynamic NonLinearity
DNS Domain Name System/Service
DNV Det Norske Veritas
DO Diode Outline [ U.S. American (JEDEC) code for standardized diode packages, i.e. DO-5, DO-34 etc. ]
DOC Department Of Commerce
DOCSIS Data-Over-Cable-Service Interface Specification
DOD Department Of Defence
DOE Diffractive Optical Element
DOE Department Of Energy
DOE Design Of Experiment
DOL Department Of Labor
DOL Direct-On-Line ( technique )
DOORS Dynamic Object Oriented Requirements System
DOP DiOctylPhtalate
DOS Disk Operating System
DOT Department Of Transportation
DPA Distributed Power Architecture
DPA Duralink Port Aggregation ( software package )
DPC Deferred-Procedure Call
DPDT Double-Pole Double-Throw ( switch )
DPI Dots Per Inch
DPLL Digital Phase-Locked Loop
DPLM Dual-Ported Local Memory ( architecture )
DPM Defectives per Million
DPM Device Partition Map
DPM Digital Panel Meter
DPM Dual-Port Memory
DPMCC Dual PCI Mezzanine Card Carrier
DPMS Display Power-Management Signaling ( VESA standard )
DPO Digital Phosphor Oscilloscope ( Tektronix )
DPR Dual-Port RAM
DPSK Differential Phase Shift Keying
DPST Discrete Power & Signal Technologies ( division, Fairchild )
DPST Double-Pole Single-Throw ( switch )
DPWM Digital Pulse-Width Modulation
DQPSK Differential Quadrature Phase-Shift Keying
DQRUMA Distributed-Queueing Request Update Multiple Access
DRA Defense Research Agency ( UK )
DRAM Dynamic Random Access Memory
DRC Design Rule Checking
DREAM Design Rule Enforcer And Manager
DReAM Distributed Resources Allocation Manager ( Sun )
DREN Defense Research and Engineering Network
DRIE Deep Reactive Ion Etching
DRO Data Replication Option
DRO Dielectric-Resonator Oscillator
DRS Design Requirements Sheet
DRTO Delayed Return-To-One
DRTZ Delayed Return-To-Zero
Ds Darmstadtium [ Element 110 after the city of Darmstadt in Germany ]
DS Diode Standard [ U.S. American code for JEDEC standard diode packages ]
DS Direct Sequence
DS-CDMA Direct-Sequence Code-Division Multiple-Access
DSC Digital Still Camera
DSD Direct-Stream Digital ( recording )
DSF Device Special Function ( SGRAM )
DSF Dispersion Shifted Fiber
DSI Distributed Systems Interface
DSI Dynamic Skeleton Interface
DSL Design Synthesis Language
DSL Digital Subscriber Line/Loop
DSL Domain-Specific Language
DSLA Digital Subscriber Loop Analogue ( modem )
DSLAM Digital-Subscriber-Line-Access Multiplexer
DSM Deep SubMicron ( design )
DSM-CC Digital Storage Media - Command and Control
DSO Data Source Object ( HTML )
DSO Digital Storage Oscilloscope
DSP Digital Signal Processing/Processor
DSPF Detailed/Distributed Standard Parasitic Format
DSPSE DSP Software Engineering ( Inc. Bedford MA )
DSR Data Set Ready [ an RS-232-C signal from a DCE to a DTE indicating that the DCE has established a connection ]
DSS Digital Satellite Service
DSS Double-sacrificial Silicon-nitride Sidewall
DSSS Direct-Sequence Spread-Spectrum ( RF transmission )
DSTN Double Super Twisted Nematic ( LCD )
DSU Data Service Unit
DSVD Digital Simultaneous Voice and Data ( standard V.70 )
DTAB Demountable Tape-Automated Bonding
DTAD Digital Telephone Answering Device
DTC Direct Torque Controlled ( drive )
DTCXO Digitally-controlled Temperature-Compensated Crystal Oscillator
DTD Detailed Timing Descriptor
DTE Data Terminal Equipment [ computer, PC ]
DTH Direct-To-Home ( satellite system )
DTI Department of Trade and Industry ( British )
DTL Diode-Transistor Logic
DTMF Dual Tone Multiple Frequency
DTP Datagrade (unshielded) Twisted Pair
DTP Desk Top Publishing
DTR Data Terminal Ready [ an RS-232-C signal from a DTE to a DCE indicating a readiness to transmit or receive data ]
DTR Dedicated Token Ring
DTS Digital Theater Sound
DTS Digital Time Scope
DTS Display Technology Systems ( St. Paul MN )
DTTB Digital Terrestrial Television Broadcasting
DTV Digital TeleVision
DUART Dual Universal Asynchronous Receiver/Transmitter
DUPS DC Uninterruptible Power Supply
DUT Device Under Test
DVB Digital Video Broadcast
DVB-CAM Digital Video Broadcasting Conditional Access Module
DVB CI Digital Video Broadcasting Common Interface
DVD Digital Versatile Disk
DVD Digital Video Disk
DVE Digital Video Encoder
DVI Digital Visual Interface
DVM Digital Volt-Meter
DVR Digital Video Recorder
DWA Data-Weighted Averaging
DWA DiebstahlWarnAnlage
DWARF Debug With Arbitrary Record Format
DWDM Dense Wavelength-Division Multiplexing ( network )
D-WDM Dense Wave Division Multiplexing
DWG Development Working Group
DWMT Discrete Wavelet Multi-Tone
DXC Digital cross(X) Connector
Dy Dysprosium [ Element 66 ]
e Euler's number 2.71828... [ base of natural logarithm and exponential function ]
E Exa [ 10^18 ]
E1 European level 1 ( telephony interface 2 Mbit/s )
E3 European level 3 ( telephony interface 34 Mbit/s )
E4 European level 4 ( telephony interface 140 Mbit/s )
EAB Embedded Array Block ( Altera )
EABI Embedded Applications Binary Interface
EAL Educational Assistance Ltd. ( Glen Ellyn IL )
EAM Electro-Absorption Modulator
EAM Enterprise Asset Management
EAN Engineering Application Note
EAROM Electrically Alterable Read-Only Memory
EAS Electronic Article Surveillance ( system )
EASE Embedded Application Software Enabler
EASI Embedded All-in-one System Interface
EBCDIC Extended Binary Code Decimal Interchange Code ( IBM )
EBCo Ensign-Bickford Company ( Simsbury CT )
EBCP Ericsson Bluetooth Core Product
EBDK Ericsson Bluetooth Developers Kits
EBX Embedded Board, eXpandable ( standard )
EC Embedded Controller
EC European Community
ECB Electronically Controlled Birefringence ( LCD )
ECB Electronic Code Book
ECBS European Committee for Banking Standards
ECC Error Checking and Correcting
ECCA European Cable Communications Association
ECCSL Emitter-Coupled Current Steered Logic
ECE Electrical and Computer Engineering ( school )
ECG ElectroCardioGram
ECHS Extended Cylinder Head Sector
ECIX Electronic Component Information eXchange
ECK Embedded Components Kit
ECL Emitter-Coupled Logic [ unsaturated logic performed by emitter-coupled transistors ]
ECLinPS ECL in PicoSeconds ( logic family )
ECMA European Computer Manufacturers Association
ECO Electron-Coupled Oscillator
ECO Engineering Change Order
ECP Extended Capabilities Port
ECS Enhanced Cycle Simulation
ECS Event Communications Service
ECSP Environmentally-considered Chip Scale Package
ECTF Enterprise Computer Telephony Forum
ECTFT Elevated-Channel TFT
ECU Electronic Control Unit
ECU Engine Control Unit
ECVS Extended Clustered Voltage Scaling ( structure )
EDA Electronic Design Automation
EDAC Electronic Design Automation Consortium
EDB Economic Development Board ( Singapore )
EDC Error Detection and Correction
EDE Embedded Development Environment
EDFA Erbium-Doped Fiber Amplifier
EDGE Enhanced Data rates over GSM Evolution
EDH Error Detection and Handling
EDI Electronic Data Interchange
EDI Emulator Device Interface
EDID Extended Display Identification Data
EDIF Electronic Data Interchange Format
EDIF Electronic Design Interoperability/Interchange Format
EDLC Electrochemical Double-Layer Capacitor
EDM Electrical Discharge Machining
EDM Electronic Document Management
EDM Engineering Data Management
EDMS Engineering Data Management System
EDO Extended Data Out
EDR Enhanced Data Rate
EDT Ethylene Diamine Tartrate
ED&TC European Design & Test Conference
EDV Elektronische DatenVerarbeitung
EDVA Elektronische DatenVerarbeitungsAnlage
EDVS Electronic Design Validation System
EDX Energy-Dispersive X-ray
E²PROM Electrically Erasable Programmable Read-Only Memory
EE Electronic Engineer
EEA European Economic Area
EEC European Economic Community
EECA European Electronic Component manufacturers Association
EEG ElektroEnzephaloGrafie
EEM Electronic Engineers Master ( catalog )
EEMBC EDN Embedded Microprocessor Benchmark Consortium
EEPLD Electrically Erasable PLD
EEPROM Electrically Erasable Programmable Read-Only Memory
EER Envelope Elimination and Restoration ( scheme )
EERI Engineering Expertise Reuse Information
EEST Enhanced Ethernet Serial Transceiver ( MC68160 )
EET Electronics Engineering Technology
EFB Europäische Forschungsgesellschaft für Blechverarbeitung
EFI External Features Interface
EFI External Frequency Input
EFIP European Federation of Interconnection and Packaging
EFM Eight-to-Fourteen Modulation
EFP Exponential Floating-point Processing
EFQM European Foundation for Quality Management
EFR Enhanced Full Rate ( vocoder )
EFT Electrical Fast Transient
EF&T Environmental Fate and Transport ( of explosive signature molecules )
EFTA European Free Trade Association
EGA Enhanced Graphics Adaptor
EGB Elektrostatisch Gefährdete Bauelemente
EGNOS European Geostationary Navigation Overlay Service
EGP Exterior Gateway Protocol
E-GSM Extended Global System for Mobile communication
EHCI Enhanced Host-Controller Interface
EHF Extremely High Frequency ( 30-300GHz )
EHPI Enhanced Host-Port Interface
EHSA European Home Systems Association
EHT Extremely High Tension
EIA Electronics Industry Alliance
EIA Electronic Industries Association
EIAJ Electronic Industries Association of Japan
EID Electronic Information Display
EID Embedded Internet Device
EIF Electronics Industries Forum
EIF Electronic Industries Foundation ( EIA )
EIOS Extended Input/Output System
EIR Equipment Identity Register ( GSM )
EIRP Equivalent Isotropically Radiated Power
EIS Executive Information System
EISA Extended Industry Standard Architecture
EITO European Information Technology Observatory ( Frankfurt, Germany )
EIU Economist Intelligence Unit
EKG ElektroKardioGrafie
EKI Electronic Keyboards Inc. ( Linden VA )
EL ElectroLuminescence
ELD ElectroLuminescent Display
ELDEC European LSI Design and Engineering Center
ELDL Emergency Lighting Design Lumens
ELF Executable and Linkable Format
ELIC Extended Line Card Controller
ELM Electrical Link Module
EM ElectroMechanical
EM End of Medium ( ASCII control code )
EMC ElectroMagnetic Compatibility
EMC ElectroMagnetic Compliance
EMCTLA ElectroMagnetic Compatibility Test Labs Association
EMD Electronic Measurements Division ( HP, Loveland CO )
EMD Engineering, Manufacturing, and Development
EMEA Europe, the Middle East and Africa
EM/EDA ElectroMechanical/Electronic Design Automation
EMF ElectroMagnetic Field
EMF ElectroMotive Force
EMG ElectroMyoGram
EMI ElectroMagnetic Interference [ caused by current or voltage induced into a signal conductor by an EMF ]
EMIF External Memory Interface
EMIT Embedded Micro-Interface Technology
EMK ElektoMotorische Kraft
EMMI EMission MIcroscopy
EMP ElectroMagnetic Pulse
EMR ElectroMechanical Relay
EMS Equipment Management Service
EMS Expanded Memory Specification ( DOS )
EMSS ElectroMechanical System Simulator
EMTP ElectroMagnetic Transient Program ( circuit simulator )
EMU Electrical Multiple Unit
EMV ElektroMagnetische Verträglichkeit
EMVG EMV-Gesetz
EN European Norm
ENBW Equivalent Noise BandWidth
ENDEC Encoder-Decoder
ENIAC Electronic Numerical Integrator And Computer ( 1946 )
ENOB Effective Number Of Bits ( ADC )
ENQ ENQuiry ( ASCII control code )
ENSI Equivalent Noise-Sideband Input
EO Electro-Optical ( material )
EOC Embedded Operations Channel
EOC End Of Carrier
EOD End Of Data
EOF End Of File
EOF End Of Frame
EOI End Or Identify
EOLM End Of Line Monitor
EOMS Engineering Object Management System
EOS Electrical OverStress
EOT End Of Tape
EOT End Of Transmission ( ASCII control code )
EPA Environmental Protection Agency
EPA Event Processor Array
EPAC Electrically Programmable Analog Circuit
EPAC Electronic Packaging and Assembly Concept
EPIC Explicitly Parallel Instruction Computing
EPIC Extended PCM Interface Controller
E-PAC Electronic Packaging Assembly Concept
EPD Enhanced Punch-through Diode
EPG Electronic Program Guide ( TV )
E-pHEMT Enhancement-mode pseudomorphic High Electron Mobility Transistor
EPIC Electric Power Innerurban Commuter
EPIC Enhanced Performance Ion-implanted CMOS ( process )
EPIC Explicitly Parallel Instruction Computing
EPICS European Production Information and Control System
EPID ElectroPhoretic Image Display
EPL Electron Projection Lithography
EPP Enhanced Parallel Port
EPP Expanded PolyPropylene
EPROM Erasable Programmable Read-Only Memory
EPSMA European Power Supply Manufacturers Association
EPSS Electronic Performance Support System [ context-sensitive help system ]
EQA European Quality Award
EQM Event Qualification Module
Er Erbium [ Element 68 ]
ER Earth Recall
EREM Energy Resolved Emission Microscopy
ERM Enterprise Resource Management
ERMES European Radio-MEssage System
ERP Effective Radiated Power
ERP Enterprise Resource Planning
ERP Event-Related Potential [ neural patterns intended to be used to control prosthetic limbs ]
ERS Emissions Reference Source ( EMC )
ERSO Electronics Research & Service Organisation ( Taiwan )
Er:YAG Erbium:Yttrium Aluminum Garnet ( Laser optical element )
Es Einsteinium [ Element 99 after Albert Einstein ]
ESA Embedded Server Architecture
ESA European Space Agency
ESBU Embedded Systems Business Unit ( IBM )
ESC ElectroStatic Chuck
ESC Embedded Systems Conference
ESC Engineering Solution Center ( IAO )
ESC ESCape ( ASCII control code )
ESCD Extended System Configuration Data
ESD Electronic Software Distribution
ESD ElectroStatic Discharge
ESDA Electronic Systems Design Automation
ESDI Enhanced Small Drive/Device Interface
ESDS ElectroStatic Discharge Sensitive
ESER EinheitsSystem der Elektronischen Rechentechnik ( des RGW )
ESF Extended Super Frame
ESG EinscheibenSicherheitsGlas
ESH Equivalent Sunshine Hours
ESL Electronic System Level
ESL Equivalent Series L(inductance)
ESOFTA Embedded Software Association
ESP Embedded System Products
ESR Electron Spin Resonance
ESR Equivalent Series Resistance
ESR Even Service Routine
ESRO European Space Research Organisation
ESS Environmental Stress Screening
ESSA Environmental Survey SAtellite
ESSCIRC European Solid State CIRcuits Conference
ESSDERC European Solid-State DEvice Research Conference
ESSI Extended Synchronous Serial Interface
ESTP Einheitliches System der Toleranzen und Passungen ( des RGW )
ESU ElektroSchlackeUmschmelzverfahren
ET Exchange Termination
ETA Electronic Travel Aid
ETAP Extended Test Access Port
ETB End of Transmission Block ( ASCII control code )
eTBC embedded Test Bus Controller ( SN74LVT8980 )
ETC Electronic Toll Collection
ETF Equalized Transfer Function
ETI Embed The Internet ( consortium )
ETL Enhanced Transceiver Logic
ETN Enhanced Twisted Nematic ( LCD )
ETOX EPROM Tunnel Oxide
ETQFP Enhanced Thin Quad Flat Pack
ETRI Electronics and Telecommunications Research Institute ( Taejon Korea )
ETS Embedded Tool Suite
ETS Equivalent Time Sampling
ETS European Telecommunications Standard
ETSI European Telecommunications Standards Institute
ETU Emulation and Test Unit
ETX End of TeXt ( ASCII control code )
Eu Europium [ Element 63 ]
EU European Union
EUH Erase Unit Header
EUROS Enhanced Universal Real-time Operationg System
EUT Equipment Under Test
EUV Extreme UltraViolet [ optical lithography technology ]
EUV (LLC) Extreme UltraViolet Limited Liability Company ( San Jose CA )
eV electron Volt
EV Electric Vehicle
EVA Extended Viewing Angle ( technology LCD )
EVA Extreme Value Analysis
EVBIT [ Öffentliche Vergabeordnung für Softwareaufträge ]
EVC Enhanced Video Connector
EVF Embedded Vector Format
EVM Embedded Virtual Machine
EVM Error-Vector Magnitude
EVM Evaluation Module
EVU EnergieVersorgungsUnternehmen
EWCAP Electrical Wiring Component Applications Partnership
EZB Europäische ZentralBank
f femto ( 10^-15 )
F Farad ( capacitance, 1 F = 1 C / V )
F Fluorum [ Element 9 Fluorine Fluor ]
FAA Federal Aviation Administration
FACT Fairchild Advanced CMOS Technology
FACT Federation Automatic Coding Technologies
FAE Field Application Engineer
FAIS Factory Automation Interface Specification
FALC Frame and Line Interface Component
FAMOS Fast Analysis and Monitoring Of Signals
FAPS FertigungsAutomatisierung und ProduktionsSystematik ( Lehrstuhl FAPS, Universität Erlangen-Nürnberg, Germany )
FAQ Frequently Asked Questions
FASIC Function- and Algorithm-Specific Integrated Circuit
FASL Fujitsu AMD Semiconductor Ltd. ( Fab Japan )
FAST Fairchild Advanced Schottky Technology
FAST Flexible Accelerated Stress Test
FAT File Allocation Table
FAT-ID Frequency-Amplitude Time Impedance and Dimension ( EMI )
FAX Facsimile
FB Frame Buffer
FBGA Fine-Pitch Ball Grid Array
FBS FunktionBausteinSprache ( SPS )
FBSOA Forward Biased Safe Operating Area ( transistor parameters )
FC Fibre Channel
FC Frame Control
FCAL Fibre Channel Arbitrated Loop
FCB File Control Block
FCB Frequency Coordinating Board
FCC Federal Communications Commission ( Washington DC )
FCDL Folded Cascoded Differential Logic
FC-EL Fibre Channel Enhanced Loop
FCI Framatome Connectors International ( France )
FCL FET Coupled Logic
FCL Fibre Channel Loop
FCLC Fibre Channel Loop Community
FC-LE Fibre Channel Link Encapsulation
FCM Fast Component Mounter ( Philips Bestückungsautomat )
FCP Function Control Protocol
FCRAM Fast Cycle RAM
FCS Frame Check Sequence
FCSI Fibre Channel Systems Initiative
FC-SL Fibre Channel Slotted Loop
FCT Fast CMOS Technology
FDA Food and Drug Administration
FDB Filtered DataBase
FDC Floppy Disk Controller
FDD Frequency Division Duplex
FDDI Fiber Distributed Data Interface
FDDR Fuzzy Decision Desk Relation
FDI Flash Data Integrator
FDIS Final Draft International Standard [ international fieldbus standard IEC 61158 ]
FDL Folded Differential Logic
FDM Fused Deposition Modelling
FDMA Frequency-Division Multiple-Access
FDNR Frequency-Dependent Negative Resistor
FDR Final Design Review
FDTD Finite Difference Time Domain ( solver )
FDX Full Duplex
Fe Ferrum [ Element 26 Iron Eisen ]
FEA Field-Emitter Array ( display )
FEA Finite Element Analysis
FEC Forward Error Correction
FED Fachverband Elektronik-Design ( e.V. Berlin Germany )
FED Field-Emission Display
FEE Fédération des Experts comptables Européens
FEFI Far-End Fault-Indication
FEI Federation of the Electronics Industry ( UK )
FEM Finite Element Method
F-ES Fixed-End System
FET Field-Effect Transistor
FEXT Far-End X(cross) Talk
FF Fieldbus Foundation
FF Flip-Flop
FF Form Feed ( ASCII control code )
FFE Feed Forward Equalizer
FFM Full Functional Model
FFSK Four-level Frequency-Shift Keying
FFT Fast Fourier Transform
FGC Fast-Gas Chromatography
FH Frequency Hopping
FhG Fraunhofer-Gesellschaft
FHSS Frequency-Hopping Spread-Spectrum ( RF transmission )
FWHM Full-Width Half Maximum [ the width of a pulse at 50% amplitude used to measure the duration of a signal ]
FI Finnland, Sähkötarkastuslaitos ( Prüfzeichen )
FIB Focused Ion Beam
FIB/SEM Focused Ion Beam/Scanning Electron Microscope
FIC Fast Information Channel ( generator )
FIFO First-In/First-Out ( memory )
FIPS Federal Information Processing Standards
FIPSOC Field-Programmable System On a Chip
FIR Finite duration Impulse Response
FIR Finite Impulse Response ( filter )
FIRE Fully Integrated RISC Emulator
FIRST Fraunhofer-Institut für Rechnerarchitektur und SoftwareTechnik
FIT Failure In Time
FITL Fiber In The Loop
Fl Flerovium [ Element 114 after Georgi Flyorov - Георгий Николаевич Флёров ]
FL Florida
FLC Ferroelectric Liquid Crystal ( technology )
FLC Fire Lighter Circuit
FLC Full Load Current
FLEX Fast Language for Execution
FLIM Fluorescence Lifetime IMaging
FLOPS FLOating-Point operations per Second
FLT Full Load Torque
Fm Fermium [ Element 100 after Enrico Fermi ]
FM Fault Management ( ATM )
FM Flash Manager
FM Frequency Modulation
FMCW Frequency-Modulated Continuous Wave ( RADAR )
FMEA Failure Mode and Effect Analysis
FMI Fluorescent Microthermal Imaging
FMM Flash Media Manager
FMUP Flash Memory Update Program
FMVG Front Mounted Valve Gate
FN Fowler-Nordheim ( tunneling )
FNC Federal Network Council
FNT Förderkreis Neue Technologien ( München Germany )
FO Fiber Optic
FOB Fiber Outlet Box
FOC Field Oriented Control
FOE Focus Of Expansion
FOIRL Fibre Optic Inter-Repeater Link
FORTRAN FORmula TRANSlator ( programming language )
FOSI Free-Space Optical Interconnect
FOUP Front Opening Unified Pod
FP Fabry-Perrot ( LASER )
FP Fixed Part ( DECT basestation )
FP Flat Package
FPAA Field Programmable Analog Array
FPAD Field-Programmable Analog Device
FPC Ferrite Polymer Composite
FPC Flexible Printed Circuit
FPCB Field Programmable Circuit Board
FPD Field-Programmable Device
FPD Flat Panel Display
FPDI Flat Panel Display Interface
FPDM Flat Panel Display Measurements ( VESA )
FPDP Front-Panel Data Port
FPGA Field Programmable Gate Array
FPI Field Programmable Instrument
FPI Flexible Peripheral Interconnect ( bus )
FPIC Field Programmable Interconnect Component ( Aptix )
FPID Field Programmable Interconnect Device
FPL Functional Protocol Language
FPLA Field Programmable Logic Array
FPLMTS Future Public Land Mobile Telecommunication System
FPM Fast Page Mode
FPM Flat Protected-Mode
FPMSD Field-Programmable Mixed-Signal Device
FPN Fine Print Note
FPN Fixed-Pattern Noise
FPN Floating-Point Number
FPP Finite Position Potentiometer
fps frames per second ( video )
FPSC Field Programmable Standard Cells ( Lucent )
FPSC Field Programmable System Chip ( Lucent )
FPSCR Floating-Point Status and Control Register
FPSLIC Field Programmable System Level Integrated Circuit ( Atmel )
FPU Floating-Point Unit
FQD Full-Quadrature Decoding
FQDN Fully Qualified Domain Name ( TCP/IP, DNS )
Fr Francium [ Element 87 by Marguerite Perey in France ]
FRAD Frame Relay Access Device
FRAM Ferroelectric RAM
FRB Federal Reserve Board
FRC Frame Rate Control ( LCD )
FRED Fast Recovery Epitaxial Diode
FRF Frequency-Response Function
FRL Filter, Regulator & Lubricator
FS File Separator ( ASCII control code )
FS Full Scale
FSAN Full Service Access Network
FSB Front-Side Bus
FSB Functional System Block ( ASIC )
FSD File System Driver
FSIS Food Safety Inspection Service
FSK Frequency-Shift Keying
FSM Finite State Machine
FSO Full Scale Output
FSR Full Scale Range ( ADC )
FSR Full Scale Reading
FSRAM Fast Static Random Access Memory
FSS Fixed Satellite Service ( DBS )
FST Flat Square Tube
FSTN Film SuperTwist Nematic [ a type of LCD ]
FSTN Foil-compensated Super Twisted Nematic ( LCD )
F-STN Film-SuperTwist Nematic ( LCD )
FSW Friction Stir Welding
FTA Fault Tree Analysis
FTC Federal Trade Commission
FTG Force stimulus Timing Generator
FTL File-Transfer Language
FTL Flash Translation Layer
FTO Fault Tolerant Option
FTP File Transfer Protocol
FTS Fahrerloses TransportSystem
FTTB Fibre-To-The-Building
FTTC Fibre-To-The-Curb
FTTCab Fibre-To-The-Cabinet
FTTH Fiber To The Home
FTZ FernmeldeTechnisches Zentralamt
FUBAR Fucked Up Beyond All Recognition ( net slang )
FUNI Frame-based User-to-Network Interface
FUP FUnktionsPlan ( SPS )
FVC Frequency-to-Voltage Converter
FW FriktionsWickelwelle
FWIW For What It's Worth ( net slang )
FYI For Your Information ( net slang )
FZP Fast Zero Power ( design technique )
g gramm ( mass )
G Giga ( 10^9 )
Ga Gallium [ Element 31 ]
GA Georgia
GaAs Gallium Arsenide
GAE GesamtAnlagenEffektivität
GAIM GSM Analog Interfacing Module
GAL Generic Array Logic ( PLD )
GaN Gallium Nitride
GAO General Accounting Office
GAP Generic Access Profile ( DECT )
GATE Gestão Administrativa Total de Empresas
GATS General Agreement on Trade in Services
GATT General Agreement on Tariffs and Trade
GBBC GSM BaseBand Codec
GBIC GigaBit Interface Card
GBIC GigaBit Interface Converter
GBL Grace Bio-Labs ( Bend OR )
GBS Global Broadcast System
GBW Gain-BandWidth ( product )
GCA Gain-Controlled Amplifier
GCB Global Configuration Block
GCCB Geographical Change Control Board
GCI General Circuit Interface
GCMOS Graded-Complementary MOS
GCSR Grammar Controlled Speech Recognition System
GCT Gate-Controlled Thyristor
Gd Gadolinium [ Element 64 ]
GDB GNU source-level DeBugger
GDI Generic Device Interface ( ASAM )
GDI Graphics-Driven Interface
GDR German Democratic Republic ( DDR )
GDSII Graphic Design System II
GDX Generic Digital Crosspoint ( switch )
Ge Germanium [ Element 32 ]
GE Gigabit Ethernet
GEA Gigabit Ethernet Alliance
GEIS General Electric Information Systems
GEM Generic Equipment Model
GEMAC GEsellschaft für Mikroelektronik-Anwendung Chemnitz
GEPDIS Global Embedded Processor Debug Interface Standard
GET Group Execute Trigger ( GPIB )
GFC Generic Flow Control ( ATM )
GFCI Ground Fault Circuit Interrupter
GFIN Gesellschaft Für INstandhaltung ( München Germany )
GFK GlasFaserverstärkter Kunststoff
GfK Gesellschaft für Konsumforschung ( Nürnberg Germany )
GFM Graphics File Manager
GfN Gesellschaft für Netzwerktraining ( AG Reutlingen Germany )
GfS Gesellschaft für Standardisierung ( DDR )
GfS Gesellschaft für Strukturanalyse ( Aachen Germany )
GFSK Gaussian-filtered Frequency-Shift Keying
GFT Gemeinschaft FernmeldeTechnik [ Unternehmensverbund mittelständischer Telekom-Systemhäuser ]
GKW GüterKraftWagen
GGG Gadolinium Gallium Garnet
GGS GüteGemeinschaft Software ( e.V. Germany )
GGSE Gravity Gradient Stabilization Experiment
GIC Generalized Impedance Converter
GIF Graphic Image File
GIMEI Geometry Independent Measured Equation of Invariance
GIMS Global Inventory Management System
GIOP General Inter-ORB Protocol
GIPS Giga Instructions Per Second
GIS GeoInformationsSysteme
GIT GasInnendruckTechnik
GL Germanischer Lloyd
GLEAM Genetic Learning Algorithm and Method
GLL GlimmLeuchtstoffLampe
GLM Gigabit Link Module
GLONASS GLObal NAvigation by Satellite System ( GPS system )
GLPNP Gate-defined Lateral PNP ( transistor )
GLT GebäudeLeitTechnik
GLU General Logic Unit [ a class of custom integrated circuits used as interfaces between different parts of the computer ]
GLV Grating Light Valve ( technology )
GMAC Gigabit Media Access Controller
GMII Gigabit Media Independent Interface
GMM Graphical MultiMeter ( Fluke )
GMPCS Global Mobile Personal Communications by Satellite
GMR Giant Magneto-Resistive ( head, sensor )
GMSK Gaussian-filtered Minimum-Shift Keying ( modulation )
GMT Greenwich Mean Time
GND GrouND
GNOME GNU Network Object Modeling Environment
GNU GNU's Not Unix
GOC-NAND Gate-Offset Cell NAND [ flash memory storage cell ]
GOES Geostationary Operational Environmental Satellite
GOLD GSM One-chip Logic Device
GOLD-SP GOLD Signal Processor
GO-MVIP Global Organisation of MVIP
GOMSFE Generic Object Models for Substation and Feeder Equipment ( UCA )
GOP Group Of Pictures
GOPS Giga-Operations Per Second
GPC Graphics Performance Characterization ( group SPEC )
GPC Graphic Programming Console
GPF General Protection Fault
GPi General Purpose input [ a pin that receives whatever clock signal frequency an external peripheral device sends to it, allowing the external device to control the timing and the rate of information in and out of the serial port, rather than the rate being controlled by the computer ]
GPIB General Purpose Interface Bus
GPIO General Purpose Input-Output
GPL Graphical Programming Language
GPR General Purpose Register
GPRS General Packet Radio Service ( GSM )
GPS Global Positioning System/Satellite
GPSR Global Positioning System Receiver
GRM General Routing Matrix
GRP Global Routing Pool
GS Geprüfte Sicherheit
GS Group Separator ( ASCII control code )
GSC Gray Scale Controller
GSI GigaScale Integration
GSM Global System for Mobile communications
GSM Groupe Speciale Mobile ( digital mobile telephones )
GSMP General Switch and Management Protocol
GSM-R Global System for Mobile communication - Rail
GSM-USSD GSM Unstructured Supplementary Service Data
GSN Global Subscriber Number
GS'X Global Semiconductor eXchange
GTAC Global Telecommunications Action Committee
GTG Geared Turbine Grinder
GTL Go To Local ( GPIB )
GTL Gunning Transceiver Logic
GTO Gate Turn-Off ( SCR )
GTO Global Track Optimization ( technique )
GTR Getriebe-Turbo-Radialschleifer
GTRI Georgia Tech Research Institute ( Atlanta GA )
GTS Global Tri-State
GUI Graphical User Interface
GUID Global Unique IDentifier
GUIDE Graphical User Interface Development Environment
GWE Global Write Enabled
GWM Graphical Workspace Manager
H Henry ( inductance, 1 H = 1 Wb / A )
H High ( level )
H Hydrogenium [ Element 1 Wasserstoff ]
HAD Hole Accumulating Diode
HAI Hardware Accelerator Interface
HAL Hardware-Abstraction Layer
HAL Hot-Air Levelling
HALT Highly-Accelerated Life Testing
HAP High-Altitude Platform [ aeroplane, helicopter or airship operating in the stratosphere at an altitude of about 21km ]
HARM High-Aspect-Ratio MEMS
HART Highway Addressable Remote Transducer ( standard )
HASS Highly-Accelerated Stress Screening
HATP High-Availability Transaction Processing
HAZOPS HAZard and OPerability Study
HB Harmonic Balance ( simulation )
HBC High Breaking Capacity ( fuse )
HBCI Home Banking Computer Interface
HBM Human Body Model ( ESD )
HBT Heterojunction Bipolar Transistor [ SiGe and InGaAs/GaAs transistors ]
HC High-speed CMOS
HCA High Contrast Addressing ( LCD )
HCF HART Communication Foundation
HCFC HydroChloroFluoroCarbon
HCFT Hot-Cathode Fluorescent Tube
HCI Hot-Carrier Induced ( degradation )
HCMOS High-Density Complimentary Metal Oxide Semiconductor
HCMOS High-Speed Complementary Metal Oxide Semiconductor
HCPLD High-Capacity Programmable Logic Device
HCR High Contrast Reflection ( display )
HD Harmonizing Document ( EN )
HD High Density
HDCD High Definition Compatible Digital
HD-CIF High Definition Common Image Format ( 1080 by 1920 matrix HDTV )
HDD Hard Disk Drive
HDE Humanitarian Device Exemption
HDI High-Density Interconnect
HDL Hardware Description Language
HDLC High-level Data Link Control
HDM Hardware Device Module
HDMI High-Definition Multimedia Interface
HD-PQFP High-Density Plastic Quad Flatpack
HDSL High-bit-rate Digital Subscriber Loop
HDSS Holographic Data Storage System
HDT Hard Disk Toolkit
HDTV High-Definition TeleVision
HDVT Hybrid Dual-Threshold-Voltage ( circuit )
He Helium [ Element 2 from ἥλιος hélios ]
HE HöhenEinheit ( 44.45 mm, 19'' System )
HEAO High Energy Astronomical Observatory
HEC Header Error Control ( ATM )
HEE Hyundai Electronics Europe ( Ltd. Halbreath Scotland UK )
HEI High-Energy Implantation
HEL Human Engineering Lab ( Boston MA )
HEMT High Electron Mobility Transistor
HEOS Highly Elliptic Orbit Satellite
HER High-Efficiency Red ( LED )
HEV Hybrid Electric Vehicle
HEX Hexadecimal
HEXIS Heat EXchange Integrated Stack ( fuel cells, Sulzer Innotek, Winterthur Switzerland )
Hf Hafnium [ Element 72 ]
HF High Frequency ( HochFrequenz )
HFC Hybrid Fiber/Coax ( technology )
HFC HydroFluoroCarbon
HFET Heterostructure Field-Effect Transistor
HFS Hierarchical File System ( of Apple computers )
HFSS High-Frequency Structure Simulator ( Agilent )
Hg Hydrargyrum [ Element 80 Mercury Quecksilber ]
HGED High-Gain Emissive Display
HGÜ HochspannungsGleichstromÜbertragung
HHI Heinrich-Hertz-Institut ( Berlin Germany )
HHP Hand-Held Programmer
HHP HochleistungsHeizPatrone
HDVT Hybrid Hierarchical Reduced-Swing Logic
HHT Hand-Held Terminal
HIC Heterogenous InterConnect
HID Human Input Device
HID Human Interface Device
HIL Hardware-In-the-Loop ( simulation )
HIMA Health Industry Manufacturers Association
HIP Heiß-Isostatische Preßbehandlung
HIPPI HIgh-Performance Parallel Interface
HKTDC HongKong Trade Development Council
HLC Hybrid Layer Capacitor
HLD High Level Design
HLDA High Level Design Automation
HLL High Level Language
HLL High Level Logic
HLR Home Location Register ( GSM )
HLRS HochLeistungsRechenzentrum Stuttgart ( Germany )
HM Hard-Metric ( connector )
HMD Head-Mounted Device
HMI Hahn-Meitner-Institut [ Berliner Forschungszentrum ]
HMI Human-Machine Interface
HMM Hidden Markov Model
HMTI Hana Microdisplay Technologies Inc. ( Twinsburg OH )
HNIL High Noise Immunity Logic
Ho Holmium [ Element 67 after Holmia the city of Stockholm ]
HOIE Holographic Optical Interconnect Element
HOL Head-Of-Line ( blocking, Ethernet )
HP Hewlett-Packard ( Co. Cupertino CA )
HPA High-Performance Addressing ( LCD )
HPC Handheld Personal Computer
HPC High-Performance Computing
HPCF Hard Polymer Clad Fiber
HPFS High-Performance File System ( OS/2 )
HPGL Hewlett-Packard Graphics Language
HPO High-Performance Option
HPS High-Performance Schnecke ( Krauss-Maffei AG München Germany )
HPSC High-Performance Scalable Computer
HRC High Rupturing Capacity ( fuse )
HRMS High-Resolution Mass Spectrometry
HRTF Head-Related Transfer Function
HR-TFT High Reflective Thin Film Transistor ( LCD )
HQ High Quality
Hs Hassium [ Element 108 after Hassia = Hessen in Germany ]
HSCSD High-Speed Circuit-Switched Data ( GSM )
HSDPA High Speed Downlink Packet Access
HSE Health and Safety Executive
HSE High Speed Ethernet
HSIO High Speed Input/Output
HSIP Hsinchu Science-based Industrial Park ( Taiwan )
HSL Hue, Saturation, Luminescence ( color scheme )
HSM Hierarchical Storage Management
HSP Host Signal Processing
HSPA High-Speed Packet Access
HSSDC High-Speed Serial Data Connector
HSTR High-Speed Token Ring
HSTL High-Speed Transceiver Logic
HSUPA High Speed Uplink Packet Access
HT Horizontal Tabulator ( ASCII control code )
HTCC High-Temperature Cofired Ceramic
HTH Hope This Helps ( net slang )
HTML HyperText Markup Language
HTTP HyperText Transport/Transfer Protocol
HUD Heads-Up Display
HUM Hold-Up Module
HUT Helsinki University of Technology ( Finland )
HV High Voltage
HVAC Heating, Ventilating, and Air Conditioning
HVD High-Voltage Differential
HVIC High-Voltage Integrated Circuit
HVL Hardware Verification Language
HW HardWare
HW/SW HardWare/SoftWare ( interface )
HWL KolzWolleLeichtbauplatte
Hz Hertz ( Frequenz, 1 Hz = 1 / s )
I In-phase ( signal )
I Iodum [ Element 53 Iodine Iod Jod ]
I²C Inter-Integrated Circuit ( bus )
I²L Integrated Injection Logic
I²O Intelligent I/O ( architecture )
IA Iowa
IAC InterApplication Communication ( protocol )
IAF Institut für Angewandte Festkörperphysik ( Fraunhofer IAF, Freiburg Germany )
IAF International Astronautical Federation
IAFE Integrated Analog Front End
IANA Internet Assigned Numbers Authority ( http://www.iana.org )
IAO Institut für Arbeitswitschaft und Organisation ( Fraunhofer IAO, Stuttgart Germany )
IAONA Industrial Automation Open Networking Alliance
IAP Institut für Angewandte Polymerforschung ( Fraunhofer IAP, Berlin Germany )
IAP Internet-Access Provider
IAP Intranet Application Platform
IAPP Inter-Access Point Protocol
IARU International Amateur Radio Union
IAT Institut Arbeit und Technik ( Gelsenkirchen Germany )
IAT Internet Appliance Toolkit
IBAN International Bank Account Number
IBIS Input output Buffer Information Specification
IBIS Integriertes BordInformationsSystem
IBM International Business Machines ( corporation )
IBP International Buyer Program
IBR Initialization Boot Record
IBTA Infini-Band Trade Association
IC Integrated Circuit [ self-contained, multiple-element circuit such as a monolithic or hybrid ]
ICAS Intermittent Commercial and Amateur Service
ICASSP International Conference on Acoustics, Speech & Signal Processing
ICC Integrated Circuit Card
ICC International Conference Center ( Berlin Germany )
ICC International Conference on Communications
ICCAD International Conference on Computer Aided Design
ICCD International Conference on Computer Design
ICCE International Conference on Consumer Electronics
ICDA Integrated Circuit Design Automation
ICE In-Circuit Emulator
ICE Information, Communications and Entertainment
ICECS International Conference on Electronics, Circuits and Systems
ICEP Investimentos, Comércio e Turismo de Portugal
ICER Industry Council for Electronics equipment Recycling
ICES Interference-Causing Equipment Standard
ICF International Cryptographic Framework
ICIP International Conference on Image Processing
ICM InComing Message
ICM Inverted Coaxial Magnetron
ICMP Internet Control Message Protocol
ICNN International Conference on Neural Networks
ICP In-Circuit Programmer
ICPADM International Conference on Properties & Applications of Dielectric Materials
I&CPS Industrial & Commercial Power Systems ( Technical Conference )
IC PTAB Industry Council Project Technical Advisory Board
ICR In-Circuit Reconfiguration
ICSC International Conference on Satellite Communications
ICSP In-Ciruit Serial Programming
ICSPAT International Conference on Signal Processing Applications and Technology
ICT In-Circuit Test
ICT Information and Communication Technologies
ICU Interrupt Control Unit
ICUPC International Conference on Universal Personal Communications
ICX Inter-Cartridge eXchange ( Oracle )
ID Identification
IDAPI Integrated Database Application Programming Interface
IDB Integrated Debug Block
IDB Inter-american Development Bank
IDC Insulation Displacement Connector
IDC InterDigitated Capacitor
IDC Internet Database Connector
IDCT Inverse Discrete Cosine Transform
IDE Integrated Development Environment
IDE Integrated Drive Electronics
IDEA International Data Encryption Algorithm
IDEN Integrated Dispatch-Enhanced Network
IDFT Inverse Discrete Fourier Transform
IDIS International Dismantling Information System
IDL Interchip Digital Link
IDL Interface Description Language
IDLH Immediated Dangerous to Life and Health
IDO Intelligent Design Optimization
IDS Integrated Development System
IDT Integrated Device Technology ( Inc. Santa Clara CA )
IDTV Integrated Digital TV
IEB Institute of Electronic Business ( Berlin, Germany )
IEC International Electrotechnical Committee/Commission
IEDM International Electron Devices Meeting
IEE Institution of Electric Engineers ( UK )
IEEE Institute of Electrical and Electronic Engineers ( San Jose CA )
IEEE/CAS Institute of Electrical and Electronic Engineers/Circuits and Systems Safety
IEEE 1394 [ Firewire, serial bus ]
IEM Intelligent Energy Manager
IES Institute of Environmental Sciences ( Mount Prospect IL )
IETF Internet Engineering Task Force
IF Intermediate Frequency
IFA Internationale FunkAusstellung ( Berlin, Germany )
IFAC International Federation of Automation Control
IfAG Institut für Angewandte Geodäsie
IFC InterFace Clear ( GPIB )
IFD Idea For Design ( Electronic Design, Hasbrouck Heights NJ )
IFDDI Integrated Fiber Distributed Data Interface ( MC68840 )
IFF Identify Friend or Foe ( system )
IFFT Inverse Fast Fourier Transform
IFR In-Frame Response
IFS Inter Frame Spacing/Separation
IFS International Freephone Service
IFSF International Forecourt Standards Forum
IFT Institut für FestkörperTechnologie ( Fraunhofer IFT München Germany )
IG Icon Generator
IGARSS International Geoscience And Remote Sensing Symposium
IGBT Insulated Gate Bipolar Transistor
IGEP Indian-GErman Promotion ( project )
IGFET Insulated Gate Field-Effect Transistor
IGMP Internet Group Management Protocol
IGSF Infinite-Gain Single-Feedback ( filter )
IHP Institut für HalbleiterPhysik
IHV Independent Hardware Vendor
IID Interaural Intensity Difference
IIOP Internet Interoperable ORB Protocol
IIOP Internet InterOperability Protocol
IIP Input-Intercept Point
IIP2 2nd(second)-order Input-Intercept Point
IIP3 3rd(third)-order Input-Intercept Point
IIR Infinite Impulse Response ( filter )
IIS Internet Information Server
IIS Institut für Integrierte Schaltungen ( Fraunhofer IIS Erlangen Germany )
IISP Information Infrastructure Standards Panel ( ANSI )
IL Illinois
ILMC Integrated Laser-Modulator Coupling
ILP Instruction Level Parallelism
ILS InstrumentenLandeSystem
ILT Institut für Lasertechnik ( Aachen Germany )
IM InterModulation
IM2 2nd(second)-order InterModulation
IMA Inverse Multiplexing ATM
IMBE Improved MultiBand Excited
IMC Intermetallic Compound
IMC Internet Mail Connector
IMD In Mold Decoration
IMD Insert-Mounted Device
IMD InterModulation Distortion
IMF Intermediate File Format
IMHO In My Humble Opinion ( net slang )
IMI International Microcircuits Inc. ( Milpitas CA )
IML Institut für Materialfluss und Logistik ( Fraunhofer IML Dortmund Germany )
IMO International Maritime Organization
IMod Interferometric Modulator
IMPATT Impact Avalanche and Transit Time ( diode )
IMQ Instituto Italiano del Marchio di Qualita
IMS Instruction Model Subsystem
IMS Institut für Mikroelektronik Stuttgart ( Germany )
IMS Insulated Metal Substrate
IMS Ion Mobility Spectrometry
IMTC International Multimedia Teleconferencing Consortium
IMTS Improved Mobile Telephone Service
In Indium [ Element 49 ]
IN Indiana
INCITS InterNational Committee on Information Technology Standards
InGaN Indium Gallium Nitride
INIRC International Non-Ionizing Radiation Committee
INL Integral NonLinearity
INMARSAT INternational MARitime SATellite [ mobile communications consortium ]
INNS International Neural Network Society ( Berkeley CA )
iNT intelligent Network Terminal
INT Integrated Network Terminator
INTELSAT INternational TELecommunications SATellite [ mobile communications consortium ]
InterNIC Internet Network Information Center ( http://internic.net )
I/O Input/Output
IOCTL Input/Output ConTroL [ command enables a program to communicate directly with a device driver ]
IOF Institut für angewandte Optik und Feinmechanik [ Fraunhofer IOF Jena Germany ]
IOG Inverter-Operations-Good ( signal )
IOM ISDN Oriented Modular ( interface )
IOP I/O Platform
IP Intellectual Property
IP Internet Protocol
IPAC ISDN PC Adapter Circuit
IPA Integrated Power Amplifier
IPA IsoPropyl Alcohol
IPC Integrated Passive Components
IPC InterProcess Communication
IPCI IndustrialPCI
IPCP Internet Protocol Control Protocol [ Responsible for configuring, enabling, and disabling the IP protocol modules on both ends of the point-to-point (PPP) link ]
IPD Insulating layer of Polycrystalline Dielectric
IPD Integrated Passive Device
IPD International Power Devices ( Inc. Boston MA )
IPI Intelligent Peripheral Interface
IPI International Payment Instruction
IPL Ion-beam Projection Lithography
IPM Intelligent Power Module
IPM Intel Power Monitor
IPMA In-Package Micro-Aligner ( MEMS )
IPMC Industrial Process Measurement and Control
IPMI Intelligent Peripheral Management Interface ( bus )
IPMS Institut für Photonische MicroSysteme ( Fraunhofer IPMS Dresden Germany )
IPng Internet Protocol next generation
IPO Initial Public Offering
IPO In-Place Optimization
IPPS Integrated Power Protection System
IPS In-Plane Switching ( technology TFT-LCD )
IPT Integrated Power Transmission
IPT Intelligent Positioning Tool
Ir Iridium [ Element 77 ]
IR InfraRed [ InfraRot, Spektralbereich elektromagnetischer Wellen mit Wellenlängen zwischen 770 nm und 1,0 mm ]
IR Infrared Radiation
IR Instruction Register
IR Interational Rectifier ( Corp. El Segundo CA )
IRA Individual Retirement Account
IRAM Internal RAM ( µC )
IRC Internet Relay Chat [ A protocol that enables two or more people, each in remote locations, who are connected to an IRC server to hold real-time conversations ]
IrDA Infrared Data Association
IRF Impulse Response Function
IRL Internet Reconfigurable Logic
IrLAP Infrared Link Access Protocol
IrLMP Infrared Link Management Protocol
IRQ Interrupt ReQuest
IRR Ionising Radiations Regulations
IRS Image Resampling Sequencer
IRS Internal Revenue Service
IS Interim Standard
IS Intermediate System
IS International Standard
IS Intrinsic Safety
IS Island, RER Rafmagnseftirlit rikisins ( Prüfzeichen )
ISA Industry Standard Architecture
ISAC ISDN Subscriber Access Controller
ISAM Indexed Sequential Access Method
ISAPI Internet Server Application Programming Interface
ISC International Sourcing Center
ISCAS International Symposium on Circuits And Systems
ISCE Integrated Simulator Computational Environment ( aircraft computer architecture )
iSCM internet Supply Chain Management ( Oracle Corp., Geneva, Switzerland )
ISD Information Storage Devices ( Inc. San Jose CA )
ISD Integrated System Design
ISDB Integrated Services Digital Broadcasting
ISDN Integrated Services Digital Network
ISDN-TA Integrated Services Digital Network Terminal Adaptor
ISE Institut für Solare Energiesysteme ( Fraunhofer ISE Freiburg Germany )
ISE Integrated Simulation Environment
ISEE International Sun-Earth Explorer
ISEE International Symposium on Electronics and the Environment
ISHM International Society for Hybrid Microelectronics
ISI Input Scanning Interface
ISI Integrated Systems Incorporated ( Sunnyvale CA )
ISI InterSymbol Interference
ISIN International Securities Identification Number
ISINM International Symposium on Integrated Network Management
ISIS International Satellite for Ionosphere Studies
ISM Industrial, Scientific and Medical ( frequency bands )
ISM Instruction Set Model
ISM Intermediate Service Module
ISO International Standards Organisation
ISOP Instance Specific Operating Point
ISP In-System Programmability/Programmable
ISP Internet-Service Provider
ispGDX in-system programmable Generic Digital Crosspoint ( switch )
ISPSS In-Seat Power Supply System
ISR In-System Reprogramming
ISR Integrated Switching Regulator
ISR Interrupt Service Routine
ISR Isothermal Systems Research ( Colton WA )
ISS Instruction Set Simulator
ISSCC International Solid-State Circuits Conference
ISSLL Integrated Services over Specific Link Layers
ISSM International Symposium of Semiconductor Manufacturing
IST Information Society Technologies
ISTN Improved Super Twisted Nematic ( LCD )
ISV Independent Software Vendor
ISW In-System Write
IT Information Technologies - InformationsTechnologie
IT Internet Technology
ITA Information Technology Agreement
ITA Interchangeable Test Adapter
ITAA Information Technology Association of America
ITAC ISDN Terminal Adapter Circuit
ITC International Test Conference
ITC International Trade Committee
ITCL International Technology Centre Leuven ( Belgium )
ITD Input Transition Detection
ITD Interaural Time Difference
ITE Institute of Transportation Engineers
ITK Informationstechnik und TeleKommunikation
ITMS Information Technology Metric Strategies ( newsletter )
ITL Information Technology Laboratory ( NIST )
ITO Indium Tin Oxide ( touch screen )
ITO Interface Transfer Object
ITRI Industrial Technology Research Institute ( Taiwan )
ITRI Interconnection Technology Research Institute
ITRON Industrial TRON
ITS Integrated Tiger Series ( program )
ITS Intelligent Transportation System
ITSCG Information Technology Strategies Cooperation Group
ITSEC Information Technology Security Evaluation Criteria ( European standard )
ITSIG Information Technology Strategies Implementation Group
ITU International Telecommunications Union
ITV Interactive TV
IUE International Ultraviolet Explorer ( Forschungssatellit )
IuK Informationstechnik und Telekommunikation
IUPAC International Union of Pure and Applied Chemistry
IVI Interchangeable Virtual Instrument
IVP Interactive Virtual Prototyping
IVR Interactive Voice Response
IVR Interrupt-Vector Register
IVS Interactive Voice Response
IVS International Vocabulary Support
IVT Interrupt Vector Table
IWM Integrated Woz Machine [ the custom chip that controls the Apple 3.5-inch disk drives ]
IWP Inter-Working Profile ( DECT )
IWR Isolated Word Recognition
IWS Incident Wave Switching
IWS Institut für Werkstoff- und Strahltechnik ( Fraunhofer IWS Dresden Germany )
IZM Institut für Zuverlässigkeit und Mikrointegration ( Fraunhofer IZM Berlin Germany )
IX Integration eXpert
J Joule ( energy )
J2ME Java 2 Micro Edition
JADE Joint Audio Decoder-Encoder
JAF Java Activation Framework
JAN Joint Army-Navy
JAR Java ARchive
JBOD Just a Bunch of Disks
JDC Japan Digital Cellular
JDCT Japan Digital Cellular Telephone
JDK Java Development Kit
JEDEC Joint Electronic Devices Engineering Council
JEIDA Japanese Electronics Industry Development Association
JESSI Joint European Silicon Semiconductor Initiative
JET Joint European Torus
JETEC Joint Electronic Tube Engineering Council
JETL Japan Electrical Testing Laboratory
JFC Java Foundation Classes
JFET Junction Field-Effect Transistor
JI Junction Isolation
JISC Japanese Industrial Standards Committee
JIT Just-In-Time
JITO Just-In-Time Oscillator ( FOX Electronics, Fort Myers FL )
JKFF JK type Flip-Flop
JND Just Noticeable Difference
JPEG Joint Photographic Experts Group ( standard )
JPEG Joint Picture Expert Group
JPHS Japan Personal Handy System
JPL Jet Propulsion Laboratory ( NASA, Caltech Pasadena CA )
JRMP Java Remote Method Protocol
JTA Jitter Timing Analysis
JTAG Joint Test Action Group ( IEEE 1149.1 )
JTAPI Java Telephony API
JTC Joint Technical Committee
JTC1 Joint Technical Committee ( ISO/IEC )
JTFA Joint Time-Frequency Analysis
JTS Java Transaction Service
JVD Jet Vapor Deposition
JVM Java Virtual Machine
JWG Joint Working Group
k kilo ( 10^3 )
K Kalium [ Element 19 Potassium ]
K Kelvin ( temperature )
KAIST Korea Advanced Institute of Science and Technology ( Taeheon Korea )
KAKTUS Kommunale Aachener KunststoffaufbereitungsTechnologie zur Umweltfreundlichen Sekundärrohstoffverwertung
KARMEN KArlsruhe Rutherford Medium Energy Neutrino ( Experiment, http://www.karmen.de/ )
KBM Knowledge Base Memory ( Fuzzy )
kbps kilobits per second
KDOT Knowledge Driven Optimization Technology
KDP Kalium Dihydrogen Phosphate ( crystal, laser optical element )
KDT Kammer Der Technik [ Organisation der Wissenschaftler, Ingenieure und Ökonomen der DDR ]
KEMA tot Keuring van Elektrotechnische MAterialien
KFZ KraftFahrZeug
kg kilogramm ( mass )
KGD Known-Good Die
KI Künstliche Intelligenz
km kilometer ( length )
KMU Kleine und Mittlere Unternehmen
KOM KraftOMnibus
KOP KOntaktPlan ( SPS )
Kr Krypton [ Element 36 ]
KS Kansas
KSC Kennedy Space Center
KSIA Korean Semiconductor Industry Association
kV kilovolt
kW kilowatt ( electrical power )
KWK Kraft-Wärme-Kopplung
KY Kentucky
L Low ( level )
L1 Level 1 ( primary, first-level )
L2 Level 2 ( secondary, second-level )
L²I Lynx Linux Initiative
La Lanthanum [ Element 57 Lanthan ]
LA Limiting Amplifier
LA Louisiana
LAB Logic-Array Block ( Altera )
LADL Large-Amplitude Differential Logic
LAMBD Laser Assisted Molecular Beam Disposition
LAN Local Area Network
LANE LAN-Emulation ( over ATM )
LAPD Link-Access Procedure
LASER Light Amplification by Stimulated Emission of Radiation
LATA Local Access and Transport Area
LBA Logical Block Addressing
LBB Logic Building Block
LBI Local Bus Interface
LBNL Lawrence Berkeley National Laboratory ( Berkeley CA )
LCB Lasered Circuit Board
LCC Leadless Chip Carrier
LCC Local Communication Controller ( IBM )
LCD Liquid Crystal Display
LCI Line-Conducted Interference
LCM Local Connection Manager ( S.300 )
LCOS Liquid Crystal On Silicon ( display )
LCP Liquid Crystal Polymer ( resin )
LCR Least Cost Routing ( ISDN )
LD Low Density
LDAP Lightweight Directory Access Protocol
LD-CELP Low-Delay Code-Excited Linear Prediction ( compression method )
LDD Lightly Doped Drain
LDI Laser Direct Imaging
LDMOS Lateral DMOS
LDMOS Laterally Diffused Metal-Oxide Silicon
LDMOS Laterally-Doped MOS
LDO Low Drop-Out ( voltage regulator )
LDOR Low Drop-Out voltage Regulator
LDR Light Dependent Resistor
LDRC Logic Design Rule Check
LDSC Long Distance System Control
LDT Local Descriptor Table
LEC LAN Emulation Client
LEC Line Echo Cancellation
LEC Local Exchange Carrier
LED Light Emitting Diode
LEF Library Exchange Format
LEL Lower Explosive Limit
LEM Link Error Monitor ( network )
LENS Laser-Engineered Net Shaping
LEO Light Emitting Organic
LEO Low Earth Orbit ( satellite )
LEP Light Emitting Polymer
LETI Laboratoire d'Electronique, de Technologie et d'Instrumentation
LF Line Feed ( ASCII control code )
LF Low Frequency
LFB Linear Frame Buffer
LFCSP Lead Frame Chip Scale Package
LFM LFS File Manager
LFM Linear Feet per Minute
LFOM Linearity Figure of Merit [ OIP3 divided by DC bias power ]
LFS Linear File Store
LFSR Linear Feedback Shift Register
LG Lucky Goldstar ( Semicon Seoul Korea )
LGA Land Grid Array
LGAI Laboratori General d'Assaigs i Investigacions ( Barcelona, España, www.lgai.es )
Li Lithium [ Element 3 from λίθος líthos ]
LIA Laser Institute of America
LIF Laser-Induced Fluorescence
LIF Low Insertion Force
LIFO Last-In First-Out ( memory )
LIGBT Lateral IGBT
LIMDOW Light Intensity Modulation Direct OverWrite
LiMS Lithium Metal Sulfide ( battery )
LIN Local Interconnect Network
LISN Line-Impedance Stabilization Network
LKW LastKraftWagen
LLC Logical Link Control ( network )
LLC Link-Level Control ( interface )
LLC1 Logical Link Control class 1
LLL Lawrence Livermore Laboratory ( Livermore CA )
LLME Low Layer Management Entrity ( DECT supervisory layer )
LLNL Lawrence Livermore National Laboratories ( Albuquerque NM, www.llnl.gov )
LLNL Lawrence Livermore National Laboratory ( Livermore CA )
LLO Local LockOut ( GPIB )
LLT Logical-Link Table
LM-ATL Lockheed Martin Advanced Technology Lab ( Camden NJ )
LMDS Local Microwave Distribution System
LMDS Local Multipoint Distribution System ( network )
LMH Linkable Module Header
LMS Least-Mean-Square ( algorithm )
LNA Low-Noise Amplifier
LNB Low-Noise Block
LNC Low-Noise Converter
LO Local Oscillator
LOD Level-Of-Detail
LOL Laughing Out Loud ( net slang )
LOL Loss Of Lock
LOL Lots Of Luck ( net slang )
LOM Laminated Object Manufacturing ( rapid prototyping process )
LON Local Operating Network
LOP Loss Of Power
LOS Loss Of Signal
LP Long Play [ Langspielplatte ]
LPAC London Parallel Applications Centre ( UK )
LPB Local Peripheral Bus
LPC Linear Predictive Code
LPC Low Pin Count ( interface )
LPCC Leadless Plastic Chip Carrier ( package )
LPCM Linear Pulse-Code Modulation
LPCVD Liquid-Phase Chemical Vapor Deposition
LPCVD Low-Pressure Chemical-Vapor Deposition
LPE Layout-Parameter Extraction
LPF Low-Pass Filter
LPGA Laser-Programmed Gate Array
LPI Low Probability of Interception
LPM Library of Parameterized Modules
LPM Low Profile Module
LPMOCVD Low Pressure Metal Organic Chemical Vapor Deposition
LPNP Lateral PNP ( transistor )
LPRA Low Power Radio Association
LQ Letter Quality ( printer )
Lr Lawrencium [ Element 103 after Ernest Lawrence ]
LRM Language Reference Manual
LROS Lloyd's Register Of Shipping
LRU Line Replacement Unit
LS Low-power Schottky ( logic )
LSA Linear Systems Analysis
LSB Least Significant Bit
LSB Lower SideBand
LSD Least Significant Digit
LSF Low Smoke and Flame
LSI Large-Scale Integration
LSL Logic Shift Left ( assembler mnemonic )
LSR Least-Squares Regression
LSR Logic Shift Right ( assembler mnemonic )
LSS Ladder Support Software
LSSD Level-Sensitive Scan Design
LSSGR LATA Switching Systems Generic Requirements
LSSM Loss of Synchronization State Machine
LSTTL Low-power Schottky Transistor-Transistor Logic
LT Line Termination
LTC Linear Technology Corporation ( Milpitas CA )
LTCC Low-Temperature Co-fired Ceramic [ packaging and interconnect technology ]
LTE Long-Term Evolution [ Wireless communications standard ]
LTP Long-Term Prediction
LTPS Low-Temperature Poly-Silicon ( display, Toshiba )
LTT Linux Trace Toolkit
Lu Lutetium [ Element 71 ]
LUCO LED LUminiscence-COnversion LED
LUF Lowest Useful Frequency
LUN Logical Unit Number ( SCSI )
LUNI LANE User-to-Network Interface
LUT LookUp Table
Lv Livermorium [ Element 116 after the Lawrence Livermore National Laboratory in Livermore, California ]
LVBD Low-Voltage Battery Disconnect
LVBO Low-Voltage Battery-Operated
LVC Low-Voltage CMOS
LVCMOS Low-Voltage CMOS
LVD Low Voltage Devices ( EEC directive )
LVD Low Voltage Differential
LVDS Low Voltage Differential Signal
LVDT Linear Variable Differential Transformer [ absolute displacement transducer converting a linear displacement from a mechanical reference into a proportional electrical signal ]
LVDT Linear Variable Displacement Transformer
LVL Low-Voltage Logic
LVPECL Low-Voltage PECL
LVQ Low-Voltage Quiet ( CMOS family )
LVR Large Vocabulary Recognition
LVRT Low Voltage Ride Through
LVS Layout Versus Schematic
LVS Logic Versus Schematic
LVT Low-Voltage biCMOS Technology
LVTTL Low-Voltage Transistor-Transistor Logic
LWL LichtWellenLeiter
LZS Lempel-Ziv-Stac ( compression algorithm )
m meter ( length )
m milli ( 10^-3 )
M Mega ( 10^6 )
M²C MultiMediaCard
M16QAM Multilevel 16-symbol Quadrature Amplitude Modulation
MA Massachusetts
MAC Media/Medium Access Control ( layer )
MAC Multiply-Accumulate ( unit )
MACH Macro Array CMOS High-density ( AMD CPLD )
MACS Monitoring And Control System
MACT Maximum Achievable Control Technology
MADT Micro Alloy Diffusion Technique ( transistor )
MAGIC Multi-dimensional Applications Gigabit Internetworking Consortium
MAK Maximale ArbeitsplatzKonzentration
MAN Metropolitan Area Network
MAOP Maximal Allowable Operating Pressure
MAP Manifold-Absolute-Pressure ( sensor )
MAP Manufacturing Automation Protocol
MAP Maximum A Posteriori ( algorithm )
MAPI Messaging Application Programming Interface
MARS Mechanical Anti-Reflection Switch
MASER Microwave Amplification by Stimulated Emission of Radiation
MATE Modular Automatic Test Equipment
MAU Media Access Unit
MAU Media Attachment Unit
MAUI Multimedia Application User Interface
MAUS Mobile AUtomated Scanning
MAX Multimedia Acceleration eXtension
MAZ MAgnetbildAufzeichnung
MAZeT Mikroelektronik-AnwendungsZentrum Thüringen ( Jena Germany )
MBB Moisture Barrier Bag
MBC Multimedia Benchmark Committee
MBE Molecular Beam Epitaxy
MBGA Micro Ball Grid Array
MBI Management-Buy-In
MBO Management-Buy-Out
Mbone Multicast backbone
MBR Master Boot Record
Mc Moscovium [ Element 115 ]
MC Magnetic Contactor
MC MacroCell
MC1 MultiChassis ( MVIP bus )
MC2M Motor Contactor 2 Motors
MCA Micro-Channel Architecture ( IBM )
MCA Multichannel Analyzer [ e.g. pulse height analyzer ]
MCA Multi-Cycle Analyzer
MCAV Modified Constant Angular Velocity
MCBF Mean Cycles Before Failure
MCC Microelectronics and Computer technology Center ( Austin TX )
MCC Multi-Channel Concentrator
MCCT MOS-Controlled Cascode Thyristor
MCD Measurement, Calibration, and Diagnosis ( ASAM )
MCD Memory Components Division
MCDC Modified-Condition Decision Coverage ( analysis, quality-asurance software testing )
MCELP Modified Code Excited Linear Prediction
MCFC Molten Carbonate Fuel Cell
MCFP Multi-Chip Floor Planner [ FPGA design tool ]
MCI Media Control Interface
MCI MultiCast Identifier
MCM Multi-Chip Module
MCNS Multimedia Cable Network Systems ( group )
MCNS/DOCSIS Multimedia Cable Networking Systems/Data-Over-Cable-Service Interface Specification
MCOB Multiple-Chips-On-Board ( module )
MCP Microsoft Certified Professional
MCP Multi-Chip Package
MCR Maximum Continuous Rated
MCSE Microsoft Certified Systems Engineer
MCSP Microsoft Certified Solution Provider
MCT MOS-Controlled Thyristor
MCU MicroController Unit
Md Mendelevium [ Element 101 after Dmitri Mendeleev - Дмитрий Иванович Менделеев ]
MD Maryland
MD Medium Density
MD MiniDisk
MDA Manufacturing Defects Analysis
MDA Modulation-Domain Analyzer
MDA Monochrome Display Architecture
MDAC Multiplying Digital-to-Analog Converter
MDBS Mobile Data Base Station
MDD Multi-value Decision Diagram
MDE Manufacturing Development Engineering
MDF Main Distribution Frame
MDI Management Data Interface
MDI Media-Dependent Interface
MDI Multiple Document Interface
MD-IS Mobile Data Intermediate System
MDL Microelectronics Development Laboratory ( Sandia's MDL )
MDLP Mobile Data-Link Protocol
MDMA Multi-Dimensional Multiple-Access [ time and frequency spreaded transmission scheme ]
MDMF Multiple Data Message Format
MDMX MIPS Digital Media eXtensions
MDO Multi-Disciplinary Optimizer
MDP MDSL Data Pump
MDRAM Multibank DRAM
MDS Microwave Design System ( HP )
MDSL Moderate-speed Digital Subscriber Loop
MDSL Multi-rate Digital Subscriber Loop
MDSP MDSL DSP
MDTN MultiDomain Twisted-Nematic ( LCD )
ME Measurement Expertise ( team )
ME Mechanical Engineer
MEC Message Exchange Control ( protocol IEEE488.2 )
MEDEA MicroElectronics Development for European Applications
MEDL MEssage Descriptor List ( TTP )
MEEI Magyar Elektrotechnikai Ellenorzo Intezet
MEG MagnetoEncephaloGraphy
MEI Ministry of Electronics Industries ( China )
MEK Methyl Ethyl Ketone
MELF Metal Electrode Leadless Faced ( package )
MEM MicroElectroMechanical ( technique )
MEMS MicroElectroMechanical System
MEPEE Modular Easy Programming and Execution Environment
MES Manufacturing Execution System
M-ES Mobile-End System
MESFET Metal-Epitaxial Semiconductor Field Effect Transistor
MF Merit Factor
MF Multi-Functional
MFC Microsoft Foundation Class ( library )
MFI Motor Frequency Inverter
MFL Merged Flash with Logic ( chip technology, Samsung Korea )
MFM Modified Frequency Modulation
MFSK Minimum Frequency Shift Keying ( modulation )
MFT Micro-Fine-line Technology
MFT MultiFunction Timer
Mg Magnesium [ Element 12 ]
MGC Machinable Glass Ceramic
MGD MOS-Gate Driver
MGSF Motorola GreenLine Single FET
MHA Magnetic Haptic Array
MHD MagnetoHydroDynamisch ( Generator )
MHDC Modular High-density Dc-dc Converter
MHS Multimedia Home System
MI Michigan
MIA Media Interface Adapter
MIB Management Information Base ( network )
MID Molded Interconnect Device
MIDI Musical Instrument Digital Interface
MIDP Mobile Information Device Profile ( mobile phone )
MIF Management Information Format
MIG Metal-In-Gap ( head )
MIG Microsystems Industrial Group
MII Media Independent Interface
MII Mobile-Information-Infrastructure ( project )
MIK Maximale ImmisionsKonzentration
MIM Metal-Insulator-Metal ( capacitor )
MIMD Multiple Instruction Multiple Data ( architecture )
MIME Multipurpose Internet Mail Extensions
MIMO Multiple-In Multiple-Out ( WLAN system )
MIN Mobile Identification Number
MINI Memory-Integrated Network Interface
MIPS Meaningless Information Propagated by Salesmen
MIPS Million Instructions Per Second
MIRS Multimedia Information-Retrieval Services
MIS Management Information Systems
MISFET Metal-Insulator Semiconductor Field Effect Transistor
MISO Master In Slave Out ( SPI signal )
MISR Multiple-Input Signature Register
MIT Massachusetts Institute of Technology ( Cambridge MA )
MITI Ministry of International Trade and Industry ( Japan )
MIU Memory Interface Unit
MKS Meter, Kilogramm, Sekunde ( System )
MLC MultiLayer Ceramic ( capacitor )
MLC MultiLevel Cell ( technology )
MLCC MultiLayer Chip Capacitor
MLI Machine Language Interface
MLP Meridian Lossless Packing ( compression scheme )
MLR Multichannel Linear Recording ( tape )
MLS Multi-Line Selection ( LCD )
MLV MultiLayer Varistor
MM Machine Model ( ESD )
MMA Micro-Module Architecture
MMAC Million Multiply-ACcumulate ( operations )
MMC MultiMediaCard
MMCD MultiMedia CD
MMD Magnetic Matrix Display
MMDS Microwave Multipoint Distribution System
MMDS Multichannel Multipoint Distribution Service
MMI Man Machine Interface
MMI Manufacturing Management Information ( system )
MMI Memory Mapped Interface
MMI Messe München International
MMIC Monolithic Microwave Integrated Circuit
MMJ Modular Modified Jack
MMS Manufacturing Message Specification ( ISO/IEC 9506 )
MMS Mensch-Maschine-Schnittstelle
MMU Memory Management Unit
MMVF MultiMedia Video Format ( DVD proprietary scheme, NEC )
MMX MultiMedia eXtension
Mn Manganum [ Element 25 Manganese Mangan ]
MN Minnesota
MNCRS Mobile Network Computer Reference Specification
MNOS Metal-Nitride-Oxide Semiconductor
MNSFET Metal Nitride Semiconductor Field Effect Transistor
Mo Molybdaenum [ Element 42 Molybdenum Molybdän ]
MO Magneto-Optical ( technology )
MO Missouri
MOC Missing Output Code
MOCVD Metal Oxide Chemical Vapor Deposition ( process )
MODACOM MObile DAta COMmunication
MOEMS Micro-Optical-Electromechanical System
MONET Multiwavelength Optical NETworking
MOPA Master Oscillator Power Amplifier ( laser system )
MOPS Million Operations Per Second
MORI Market and Opinion Research Institution
MOS Metal-Oxide Semiconductor
MOSAR Method Organised for a Systematic Analysis of Risks
MOSFET Metal Oxide Semiconductor Field Effect Transistor
MOSI Master Out Slave In ( SPI signal )
MOSS Market-Oriented Sector-Specific ( trade )
MOST Media-Oriented System Transport
MOU Memorandum Of Understanding ( EPA )
MOV MehrschichtOberflächenVerdrahtung
MOV Metal Oxide Varistor
MOVPE Metal Organic Vapour Phase Epitaxy
MP Metallized Paper
MPC Model-Predictive Controller
MPC Multi-Purpose Chip
MPD MagnetoPlasmaDynamisch ( Generator )
MPEG Motion Picture Expert Group
MPI Max-Planck-Institut
MPI Multiple Path Interference
MPI Multiple Perspective Interactive ( video )
MPM Metra-Potential-Methode [ Netzplantechnik ]
MPM Multi Ported Memory
MP-MLQ Multi Pulse Maximum Likelihood Quantization
MPOA MultiProtocol Over ATM
MPP Massively Parallel Processing
MPPP Multilink Point-to-Point Protocol
MPQ Max-Planck-institut für Quantenoptik ( Garching Germany )
MPR Multi-Port Repeater
MPRG Mobile and Portable Research Group ( Blacksburg VA )
MPSD Modular Port Scan Device
MPSK Minimum Phase Shift Keying ( modulation )
MPT Ministry of Posts and Telecommunications ( United Kingdom )
MPW Macintosh Programmer's Workshop [ Apple's software development environment for the Macintosh family ]
M-QAM M-ary Quadrature Amplitude Modulation
MQFP Metric Quad Flat-pack Package
MQW Multiple Quantum Well ( Laser structure )
mR milliRoentgen [ a one-thousandth of a Roentgen ]
MR MagnetoResistive ( sensor )
MRA Mutual Recognition Agreement
MRAC Model Reference Adaptive Control
MRAM Magnetoresistive Random-Access Memory
MRC Motor Reverse Contactor
MRCC Maritime Rescue Coordination Center
MRF Magneto-Rheological Finishing
MRFM Magnetic Resonance Force Microscope
MRI Magnetic Resonance Imaging
MRO Maintenance, Repair, & Overhaul
MROW Multiple Readers, One Writer ( access policy )
MRP Materials Resource Planning
MRS Micro-Reflective Structure ( LCD )
MRSC Motor Reverse Soft Contactor
MRX MagnetoResistive Extended ( head )
MS Master of Science
MS Mississippi
MSB Most Significant Bit
MSC Main Switching Center
MSCS MicroSoft Cluster Server
MSDL MPEG-4 Systems Description Language
MSDS Material Safety Data Sheets
MSE Mean Square Error
MSG MehrSchichtenGlas, MehrscheibenSicherheitsGlas
MSG Message
MSI Medium-Scale Integration
MSIE MicroSoft Internet Explorer
MSK Minimum Shift Keying
MSM Mobile Station Modem
MSO Mixed Signal Oscilloscope
MSOP Micro Small Outline Package
MSP Media Stream Processor
MSP Mixed-Signal Processing
MSP MultiSpektralFotografie
MSPS MegaSamples Per Second
MSR Message Service Routine
MSS Multiprotocol Switched Services
MST MikroSystemTechnik
MSTS MicroSoft Terminal Server
MSWDI Mixed-Signal Waveform Database Interface
Mt Meitnerium [ Element 109 after Lise Meitner ]
MTA MultiThreaded Architecture
MTBF Mean Time Before Failure
MTBF Mean Time Between Failures
MTBM Mean Time Between Malfunctions
MTC Master Timing Controller ( PXI )
MTC Measurement Technology Conference
MTD Manufacturing Test Division
MTD Memory Technology Driver
MTF Modulation Transfer Function
MTIE Maximum Time Interval Error
MTL Microsystems Technology Laboratories
MTN Modulated Twisted Nematic ( LCD )
MTP Multiple-Time Programming
MTPR MultiTone Power Ratio
MTps Million Transfers per second ( SCSI )
MTS MPEG Transport Stream
MTTF Mean Time To Failure
MTTFF Mean Time To First Failure
MTTR Mean Time To Repair
MTU Maximum Transmission Unit ( IP )
MTV Music TeleVision
MUSE Multiple Subnyquist Encoding ( HDTV )
MUX Multiplexer
MVI Motion Video Instruction ( set DEC )
MVIP Multi Vendor Integration Protocol ( bus )
MVP Multimedia Video Processor
MYOB Mind Your Own Business
n nano ( 10^-9 )
N Newton ( force, 1 N = 1 kg * m / s^2 )
N Nitrogenium [ Element 7 Nitrogen Stickstoff ]
Na Natrium [ Element 11 Sodium ]
NAB National Association of Broadcasters
NACC North American Calibration Cooperative
NACE National Association of Corrosion Engineers
NACME National Action Council for Minorities in Engineering
NADC North American Digital Cellular
NADTP National Association of DeskTop Publishers ( Topfield MI )
NAK Negative AcKnowledgment ( ASCII control code )
NAMP Nokia Artus Messaging Platform
NAMPS Narrowband Analog Mobile Phone Service
NAP Network Access Point
NARM Natural occurring or Accelerator-produced Radioactive Material
NARTB National Association of Radio and Television Broadcasters
NASA National Aeronautics and Space Administration
NAT Network Address Translator
NATA National Association of Test Authorities
NATA North American Telephone Association
NAV Network Allocation Vector ( IEEE-802.11 )
NAVSTAR NAVigation System using Timing And Ranging ( GPS system )
Nb Niobium [ Element 41 Niob after Niobe, daughter of Tantalos ]
NBFM Narrow-Band Frequency Modulation
NC Network Computer
NC No Connection
NC Normally Closed
NC North Carolina
N/C Normally Closed ( switch )
NCA Network Computing Architecture ( Oracle )
NCAP Network-Capable Application Processor
NCAR National Center for Atmospheric Research
NCB-OFD Narrow-Channel-Barrier OverFlow Drain
NCD Nonlinear Control Design
NCE Nomadic Computing Environment
NCEA National Center for Environmental Assessment ( http://www.epa.gov/ncea/ )
NCEG Numerical C Extensions Group ( ANSI )
NCL Null Convention Logic [ clockless, self-synchronizing semiconductor design technology ]
NCMS National Center for Manufacturing Sciences ( Ann Arbor MI)
NCO Numerically Controlled Oscillator
NCS Native Compiled Software
NCSA National Center for Supercomputing Applications ( University of Illinois, Champaign-Urbana IL )
NCTA National Cable Television Association
NCU Network Control Unit
Nd Neodymium [ Element 60 Neodym ]
NDA NonDisclosure Agreement
NDAC Not Data ACcepted ( GPIB )
NDF No Defect Found ( syndrome )
NDIR Non-Dispersive InfraRed ( gas and chemical sensor )
NDIS Network Device Interface Specification ( Windows networking )
Nd-LSCO Neodymium-substituted Lanthanum Strontium Copper Oxide
NDR Negative Differential Resistance
Nd:YAG Neodym:Yttrium Aluminum Garnet ( Laser optical element )
Ne Neon [ Element 10 ]
NEDA National Electronic Distributors' Association
NEL National Engineering Laboratory
NEMA National Electrical Manufacturers Association
NEMI National Electronics Manufacturing Initiative
NEMI North american Electronics Manufacturing Initiative ( http://www.nemi.org )
NEMKO Norges Elektriske Materiellkontrol
NEMP Nuclear ElectroMagnetic Pulse
NEP Noise Equivalent Power [ RMS value of optical power which is required to produce unity RMS signal-to-noise ratio ]
NEREM Northeast Electronics Research and Engineering Meeting
NESCOM NEw Standards COMmittee ( IEEE )
NEXT Near-End X(cross) Talk
NF NiederFrequenz
NF Noise Figure
NF Norm Française
NFC Near Field Communication
NFR Near Field Recording ( disk drive )
NFS Network File System
NGI Next-Generation Internet
NGIO Next-Generation Input/Output ( Intel )
NGL Next-Generation Lithography
NGST Next Generation Space Telescope ( http://www.ngst.gsfc.nasa.gov )
Nh Nihonium [ Element 113 after 日本 nihon, Japan ]
NH New Hampshire
NHD Networking Hardware Division ( IBM )
NHRP Next Hop Resolution Protocol
Ni Niccolum [ Element 27 Nickel ]
NIC Negative Impedance Converter
NIC Network Interface Card/Controller
NICE Narrative, Immersive, Constructivist/Collaborative Environment
NID Special Network Identification
NIEHS National Institute of Environmental Health Sciences
NIH Not Invented Here ( mentality )
NII National Information Infrastructure ( band 5.2GHz )
NIM Network Interface Module
NiMH Nickel-Metal-Hydride ( cell )
NIST National Institute of Standards and Technology ( Washington DC )
NiZn Nickel-Zinc ( battery )
NJ New Jersey
NJIT New Jersey Institute of Technology ( Newark NJ )
NL New Line ( ASCII control code )
NLA Next Level Aggregator ( ID IPv6 )
NLC Next Linear Collider [ international collaborative project on a high-energy, large-scale positron-electron collider ]
NLQ Near Letter Quality ( printer )
NM New Mexico
NMEA National Marine Electronics Association
NMI Non-Maskable Interrupt
NMOS N-channel Metal-Oxide Semiconductor
NMR Nuclear Magnetic Resonance ( spectrometry )
NMS Network Management Station ( SNMP )
NMSI Nonmultiplexed Serial Interface
NNI Network Node Interface
NNI Network-to-Network Interface
NNPU Neural-Net Processing Unit
NNTP Network News Transport Protocol
No Nobelium [ Element 102 after Alfred Nobel ]
NO Normally Open
N/O Normally Open ( switch )
NoBL No Bus Latency ( SRAM )
NOCT Normal Operating Cell Temperature
NOP No Operation
NORM Natural Occurring Radioactive Material
NOS Network Operating System
NOSC Naval Ocean Surveillance Center
Np Neptunium [ Element 93 after Neptune ]
NP Network Protocol
NPACI National Partnership for Advanced Computational Infrastructure
NPC Network Parameter Control
NPCS Narrow-band Personal Communication Service
NPN Negative-Positive-Negative ( doped bipolar transistor regions )
NPRM Notice of Proposed Rule-Making ( FCC )
NPR Noise Power Ratio
NPT Non Punch Through ( IGBT )
NRE NonRecurrent Engineering
NREL National Renewable Energy Laboratory
NRFD Not Ready For Data ( GPIB )
NRM Normal-Response Mode
NRZ Non-Return to Zero ( data encoding scheme )
NRZI Non-Return to Zero Invert on ones ( data encoding scheme )
NSA National Security Agency
NSB National Science Board
NSCEP National Service Center for Environmental Publications ( Cincinnati OH )
NSF National Science Foundation
NSP Native Signal Processing
NSP Network Service Provider
NSREC Nuclear & Space Radiation Effects Conference
NSSN National Standards Systems Network
NT Network Terminal
NT Network Termination
NT1 Network Termination 1 ( OSI layer 1 only )
NT2 Network Termination 2 ( OSI layers 2 and 3 )
NTC Negative Teperature Coefficient
NTDB National Trade Data Bank
NTF No Trouble Found ( syndrome )
NTFS NT File System ( Windows NT )
NTL Neue Tokaido-Linie [ Shinkansen, elektrisch betriebene, 2-gleisige Normalspur-Eisenbahnlinie zwischen Tokio und Fukuoka ]
NTONC National Transparent Optical Network Consortium
NTP Network Time Protocol
NTSB National Transportation Safety Board
NTSC National Television Standards Committee
NTSC National Television System Committee
NTSC Never Twice the Same Colour ( tech slang )
NTT Nippon Telephone and Telegraph
NTV Nonlinear Thickness Variation
NUL NULl ( ASCII control code )
NUMA NonUniform Memory Access ( architecture )
NVE NonVolatile Electronics ( Inc. )
NVG Night Vision Goggle
NVLAP National Voluntary Laboratory Accreditation Program ( NIST )
NVM NonVolatile Memory
NVP Nominal Velocity of Propagation
NVRAM Non-Volatile RAM
NWK Network ( analyser )
NY New York
NYC New York City
NYSEG New York State Electric & Gas ( corporation )
O Oxygenium [ Element 8 Oxygen Sauerstoff ]
OADM Optical Add Drop Multiplexer
OAK OEM Adaptation Kit
OAM Operation, Administrative, and Maintenance ( ATM )
OAM Operation And Maintenance
OAO Orbiting Astronomical Observatory
OATS Open-Area Test Site ( EMI )
OAV OstAsiatischer Verein
OAW Optical Assisted Winchester ( technology Seagate )
OBIGGS On-Board Inert Gas-Generating System
OBP On-Board Programming
OC Open Collector
OC OperationsCharakteristik [ Statistische Qualitätskontrolle ]
OCB Optical Compensated Bend ( mode LCD )
OCDS On-Chip Debug Support
OCMOSFET Opto-Coupled MOSFET
OCP Over Current Protection
OCR Optical Character Reader/Recognition
OCXO Oven-Controlled Crystal Oscillator
OD Open Drain
ODAA Open Data Acquisition Association ( http://www.opendaq.org )
ODBC Open DataBase Connectivity
ODBMS Object DataBase Management System
ODETTE [ Europäischer Automobilherstellerverband ]
ODMG Object Data Management Group
ODP Ocean Drilling Program
ODQL Object Data Query Language
ODS Open Data Service ( ASAM )
OE Optical-to-Electrical ( converter )
OE Output Enable ( signal )
OEC Output Edge Control
OEIC Opto-Electronic Integrated Circuit
OEL Occupational Exposure Limit
OEM Original Equipment Manufacturer
OFA Optical Fiber Amplifier
OFC Open-Fiber-Control ( protocol )
OFD Oscillator Failure Detection
OFDM Orthogonal Frequency-Division Multiplexing
OFDMA Orthogonal Frequency-Division Multiple Access
OFFM Optimized Full Functional Model
OFO Orbiting Frog Otholite [ Erdumkreisender Frosch-Otholit ]
OFTP ODETTE File Transfer Protocol
OFW OberFlächenWellen
OFX Open Financial eXchange [ homebanking standard ]
Og Oganesson [ Element 118 after Yuri Oganessian - Юрий Цолакович Оганесян / Jurij Colakovič Oganesjan ]
OGM OutGoing Message
OGO Orbiting Geophysical Observatory
OH Ohio
OHCI Open Host Controller Interface
OHDL OrCAD Hardware Description Language
OIDA Optoelectronics Industry Development Association
OIP3 3rd(third)-order Output-Intercept Point
OJEC Office Journal of the European Communities
OK Oklahoma
OLAP OnLine Analytical Processing
OLB Outer Lead Bond
OLE Object Linking and Embedding
OLED Organic Light-Emitting Device
OLGA Organic Land Grid Array
OLM Optical Link Module
OMA Object Management Architecture
OMAC Open Manufacturing for Automobile Control
OMB Office of Management and Budget
OMC Operation Maintenance Center
OMF Object Modules Format
OMG Object Management Group
OMI Open Modeling Interface
OMIMO Open Microprocessor System Initiative Management Office
OMT Object Modeling Technique
OnCE On-Chip Emulator
ONO Oxide-Nitride-Oxide ( dielectric )
ONU Optical Network Unit
OO Object Oriented
OOA Object-Oriented Analysis ( methodology )
OOAD Object-Oriented Analysis and Design ( tool )
OODBMS Object-Oriented DataBase Management System
OOP Object Oriented Programming
OOP Out-Of-Print
OOP Object-Oriented Programming Language
OPC OLE for Process Control ( foundation )
OPC Open Process Control
OPC Optical Proximity Correction ( verification technology )
OPL Organiser Programming Language
OPSEC Open Platform for Secure Enterprise Connectivity ( alliance )
OPU Optical Pickup Unit
OPV OPerationsVerstärker
OQPSK Offset Quadrature Phase-Shift Keying
OR Oregon
ORB Object Request Broker
ORCA Optimized Reconfiguarble Cell Array ( Lucent Technologies, Allentown PA )
ORDBMS Object-Relational DataBase Management System
OREM Objective Reference Equivalent Meter
ORM Optical Redundancy Manager
ORZ Organisations- und RechenZentrum
Os Osmium [ Element 76 ]
OS Operating System
OSA Optical Society of America
OSAL Operating System Abstraction Layer
OSC Oscillator
OSD On-Screen Display
OSEK Offene Systeme ( und deren schnittstellen ) für die Elektronik im Kraftfahrzeug [ open systems and corresponding interfaces for automotive electronics ]
OSEM Operating-System Extension Mechanism
OSF Open Software Foundation
OSG Oscillator Safe Guard
OSHA Occupational, Safety and Health Administration
OSI Open Switch Interval
OSI Open System Interconnect ( model, ISO )
OSI Open Systems Interconnection
OSM Operating System Services Module
OSM Optical Switch Module
OSO Orbiting Solar Observatory
OSPF Open Shortest Path First ( routing )
OSR OverSampling Ratio ( ADC )
OSRA Office Systems Research Association ( Springfield MI )
OSTRE Objective SideTone Reference Equivalent
OTA Office of Technological Assessment
OTA Operational Transconductance Amplifier
OTASP Over-The-Air Service Provisioning
OTDR Optical Time Domain Reflectometer
OTIS Optical Transpose Interconnection System
OTP One-Time Programmable
OTP Open Trading Protocol
OTPROM One-Time Programmable Read-Only Memory
OTS Orbital Test Satellite
OVI Open Verilog International ( Los Gatos CA )
OVP Over Voltage Protection
OXC Optical Cross Connect
OZ OktanZahl
ÖVE Österreichischer Verband für Elektronik
p pico [ 10^-12 ]
P Peta [ 10^15 ]
P Phosphorus [ Element 15 from φωσφόρος phōsphóros, Phosphor ]
P&R Placement and Routing
P-MQFP Plastic Metric Quad Flat Package
P-TQFP Plastic Thin Quad Flat Package
Pa Protactinium [ Element 91 proto-actinium by Otto Hahn and Lise Meitner ]
PA Pennsylvania
PA PolyAmide
PA Power Amplifier
PABX Private Automated Branch eXchange
PACS Personal-Access Communications System
PACT Programmable Acquisition and Control Timer
PAE Power-Added Efficiency
PAEK PolyArylEtherKeton
PAF PolyAgglomeration Fuse
PAFC Phosphoric Acid Fuel Cell
PAI PolyAmidImide
PAL Phase Alternation of Lines [ European color TV standard ]
PAL Programmable Array Logic ( device )
PALC Plasma-Addressed Liquid Crystal ( display )
PALCD Plasma-Addressed Liquid Crystal Display
PAM Phase/Amplitude Modulation
PAM Power Amplifier Module
PAM Pulse-Amplitude Modulation
PAMR Public-Access Mobile Radio
PAN Personal Area Network ( Laptop )
PAN PolyAcrylNitril
PAP Password Authentication Protocol
PAP ProgrammAblaufPlan
PAR PolyARylat
PAR Project Authorization Request
PARD Periodic And Random Deviation ( power supply )
PA-RISC Precision Architecture - Reduced Instruction Set Computer ( HP )
PAT Portable Appliance Tester
PAT Prime à l'Aménagement du Territoire [ Raumordnungsprämie ]
Pb Plumbum [ Element 82 Blei ]
PB Protective Basic
PBGA Plastic Ball Grid Array
PBR Partition Boot Record
PBS Placement Based Synthesis
PBS Portable Base Station ( ATM )
PBSRAM Pipelined Burst Static RAM
PBT PolyButylenTerephtalat
PBTP PolyButylenTerePhtalat
PBX Private Branch eXchange [ an automatic switchboard for handling large concentrations of telephones ]
PC Personal Computer
PC PolyCarbonat
PC Program Counter
PCA Printed-Circuit Assembly
PCA Programmable Counter Array
PCB PolyChlorinated Biphenyl [ Hazardous dielectric fluid formerly used in electrical equipment like oil-filled capacitors etc., can become the highly toxic dioxin when burned ]
PCB Printed Circuit Board
PCDD PolyChlorinated Dibenzo-para-Dioxin
PCDF PolyChlorinated DibenzoFuran
PCF Point Control Function
PCI Peripheral Component Interconnect
PCI Personal Communication Interface ( TIA )
PCI Programmable Clock Interface
PCI Protocol Control Information
PCIA Personal Communications Industry Association
PCIS Pinnacle Component Information Standard
PCISIG PCI Special Interest Group
PCL Printer Control Language
PCM Pulse Code Modulation
PCMC Precedence C Model Client
PCMCIA Personal Computer Memory Card International Association
PCN Personal Communications Network ( UK, 1.710-1.785 and 1.805-1.880 GHz )
PCN Product Change Notification
PCO Point of Control and Observation
PCP Parallel Control Port
PCR Peak Cell Rate ( ATM )
PCR Polymerase Chain Reaction
PCS Personal Communications System/Services
PCS Physical Coding Sublayer
PCTFE PolyChloride TriFluorEthylene
PCU Program-Control Unit
PCWG Personal Conferencing Working Group
PCX PC Paintbrush [ format for graphic images, ZSoft Corporation, Marietta GA ]
Pd Palladium [ Element 46 ]
PD Per Diem
PD Plasma Display
P&D Plug and Display ( VESA )
PDA Personal Digital Assistant
PDB Parasitics DataBase
PDB Planar Doped Barrier
PDC Personal Digital Cellular
PDC Personal Digital Communication
PDC Plant Data Collection
PDC Primary Digital Carrier
PDEF Physical Design Exchange Format
PDF Portable Document Format
PDG Polarization Dependent Gain
PDH Plesiochronous Digital Hierarchy
PDI Personal Data Interchance
PDI Perspective Dark-Field Imaging ( semiconductor wafer inspection )
PDIF P-cad Data Interchange Format
PDIP Plastic Dual In-line Package
PDK Process Design Kit
PDL Polarization Dependent Loss
PDL Printer Description Language
PDLC Polymer Dispersed Liquid Crystal
PDM Partition Descriptor Map
PDM Product Data Management
PDM PulsDauer-Modulation
PDMS Plant Design Management System
PDO Process Data Object ( CAN )
PDP Plasma Display Panel
PDP Programmable Data Path
PDP Programmed Data Processor
PDR Preliminary Design Review
PDS Power Drive System
PDS Processor-Direct Slot ( of Apple computers )
PDU Protocol Data Unit ( network S.200 )
PDWG Projection Display Working Group
PE Parasitic Extraction
PE PolyEthylene
PEBB Power-Electronics Building Block
PEC Peripheral Event Controller
PECC Partially Error-Controlled Connections
PECL Positive-biased Emitter-Coupled Logic
PECVD Plasma-Enhanced Chemical Vapour Deposition ( technique )
PED Personal Electronic Device
PEDA Passenger Electronic Device Association
PEDT PolyEthylenDioxyThiopen
PEEC Partial Element Equivalence Circuit
PEEK PolyEther EtherKeton
PEEL Programmable Electrically Erasable Logic ( ICT )
PEFC Proton Exchange Fuel Cell
PEI PolyEtherImid
PEK PolyEtherKeton
PEM Polymer-Elektrolyt-Membranzelle ( Brennstoffzelle )
PEM Privacy Enhanced Mail ( internet )
PEO Philips Electron Optics ( Eindhoven Netherlands )
PEP Peak Envelope Power
PEP Productivity Enhancement Products ( Laguna Hills CA )
pERC portable Executive for Real-time Control
PERC Portable Executive for Reliable Control
PERL Pratical Extraction and Report Language
PEROM Programmable Erasable Read-Only Memory
PERT Program Evaluation and Review Technique [ Netzplantechnik ]
PES Packetized Elementary Stream
PES PolyEtherSulfone
PES Programmer Electronic Signature
PESC Power Electronics Specialist Conference
PESU PolyEtherSUlfone
PET PolyEthylene Terephtalate
PETP PolyEthylene TerePhtalate
PF Power Factor
PFA Predictive Failure Analysis
PFC PerFluoroCompound
PFC Phase-Frequency Comparator
PFC Power-Factor Correction
PFCB PerFluoroCycloButene ( insulator )
PFD Phase Frequency Detector
PFM Pulse-Frequency Modulation
PFS PowerFail Signal
PFU Programmable Function Unit ( ORCA )
PGA Pin Grid Array
PGA Programmable-Gain Amplifier
PGIA Programmable-Gain Instrumentation Amplifier
PGP Pretty Good Privacy [ internet encryption algorithm ]
PHA Preliminary Hazard Analysis
PHA Pulse Height Analyzer [ device that gives a measure of the amplitude of a signal applied to its input ]
PHC Packet Header Cache
PHD Partial High Density
PHDL Philips Hardware Description Language
pHEMT pseudomorphic High Electron Mobility Transistor
PHF Personal Hands-Free [ kits can reduce exposure to the electromagnetic radiation from mobile phones ]
PHP Personal HandyPhone
PHS Personal Handyphone System
PHY PHYsical ( layer )
PI PolyImide
PIA Peripheral Interface Adapter
PIA Primary Initialization Area
PIB PolyIsoButylene
PIC Peripheral Interface Controller ( GI )
PIC Personal Intelligent Communicator
PIC Positive Impedance Converter
PIC Programmable Input/output Cell ( ORCA )
PIC Programmable Interrupt Controller
PICA Power Industry Computer Applications conference
PICMG PCI Industrial Computer Manufacturers Group
PID Personal Information Device
PID Processor IDentifier
PID Proportional, Integral, Derivative ( control )
PILOT Programmed Inquiry, Learning, Or Teaching [ a high-level programming language designed for teachers and used to create computer-aided instruction (CAI) lessons ]
PIM Personal Information Manager
PIM Programmable Interconnect Matrix
PIM Protocol-Independent Multicast
PIN Personal Identification Number
PIN Positive-Insulator-Negative ( doped diode regions )
PIND Particle Impact Noise Detection
PIO Programmed Input/Output
PIP Picture In Picture
PIP 'P' Internet Protocol
PIP Procedural Interface Protocol
PIPS Power-page Internet Printing System
PIR Passive InfraRed ( detector )
PIT Periodic Interrupt Timer
PIT Programmable Intelligent Tag
PITA Pain In The Ass ( net slang )
PIV Particle Image Velocimetry
PIV Peak Inverse Voltage
PK PolyKarbonat
PKG PhonoKardioGramm
PKW PersonenKraftWagen
PLA Programmable Logic Array ( Signetics )
PLC Power Line Carrier ( modem )
PLC Power Line Communications ( technique )
PLC Programmable Logic Cell
PLC Programmable Logic Controller
PLCC Plastic Leaded Chip Carrier
PLCP Physical-Layer Convergence Procedure
PLD Programmable Logic Device
PLDC Polymer-Dispersed Liquid Crystal ( display )
PLEDM Phase-state Low Electron hole-number Drive Memory
PLI Programming Language Interface
PLL Phase-Locked Loop
PLP Physical-Layer Processor ( DECT )
PLS Programmable Logic Sequencer
Pm Promethium [ Element 61 derived from Prometheus. Weicher Betastrahler: 147/61 Pm ]
PM Performance Management ( ATM )
PM Permanent Magnet ( motor )
PM Phase Modulation
PM Power Management
PMA Physical Medium Attachement ( sublayer )
PMA PreMarket Approval
PMC PCI Mezzanine Card
PMD Physical Medium-Dependent ( layer )
PMDC Polarization Mode Dispersion Compensator
PMID Portable MAC Identity for Display ( DECT )
PMMA PolyMethyl MethAcryliate ( Plexiglas )
PMMS Plant Maintenance Management System
PMMU Paged Memory Management Unit [ the Motorola 68851, which allows an operating system to quickly reconfigure the arrangement of memory without physically moving data, so that different tasks can be "swapped" within the same space ]
PMOS P-channel Metal-Oxide Semiconductor
PMP Post-Metal Programming
PMR Professional Mobile Radio
PMS Pump Managing System
PMSM PermanentMagneterregter SynchronMotor
PMT Photo-Multiplier Tube
PMU Parametric Measurement Unit
PN PseudoNoise
PND Personal Navigation Device
PNN Probabilistic Neural Network
PNO Profibus-NutzerOrganistaion
PnP Plug and Play
PNP Positive-Negative-Positive ( doped bipolar transistor regions )
PNSB Position and Navigation Systems Business
Po Polonium [ Element 84 by Marie and Pierre Curie ]
PO Point of Observation
POCSAG Post Office Code Standardization Advisory Group
POD Polyplanar Optic Display
POD Power On Demand
POE ProgrammOrganisationsEinheit ( SPS )
POF Plastic Optical Fiber
POI Parallel Optical Interconnect
POINT Polymer Optical INterconnect Technology
POM PolyOxyMethylen
PON Passive Optical Network
POP Picture Out of Picture
POP Precision Optical Performance
POP3 Post Office Protocol 3
POR Power-On Reset
POS Point Of Sale
POSIR Point Of Sales Internet Reporting
POSIX Portable Operating System Interface for uniX
POST Power-On Self Test
POTS Plain Old Telephone Service
POWER Performance Optimized With Enhanced RISC [ microprocessor architecture developed by IBM ]
POWER Positive Opportunities for Women Engineer's Retention
PP Parallel Processor
PP PolyPropylene
PP Portable Part ( DECT handset )
ppb parts per billion
PPE Personal Protective Equipment
PPE Plastic Package Engineering
PPE PolyPhenyleneEther
PPG Period Pulse Generator
PPGA Plastic Pin Grid Array
PPI Programmable Peripheral Interface
ppm parts per million
PPM Pulse Position Modulation
PPP Parallel Push-Pull ( amplifier )
PPP Point-to-Point Protocol
PPP Programmable Post Processor
PPR Protocol Permutation and Randomizing
PPS PolyPhenylenSulfid
PPTC Polymeric Positive Teperature Coefficient ( device )
PPTP Point-to-Point Tunneling Protocol [ networking technology that supports multiprotocol virtual private networks ]
PPV PolyPhenylene Vinylene ( LEP )
PQFP Plastic Quad Flat Pack
PQR Picture-Quality Rating
Pr Praseodymium [ Element 59 Praseodym ]
PR Puerto Rico
PRA Programmable Resistor Array
PRB Personal Request Broker
PRBS PseudoRandom Bit Sequence
PRC Pseudo-Random Code
PRCE Prime Régionale à la Création d'Enterprises [ Regionale Beschäftigungsprämie ]
PRE Prime Régionale à l'Emploi [ Regionale Beschäftigungsprämie ]
PRF Pulse-Repetition Frequency
PRI Primary Rate Interface
PRI Pulse-Repetition Interval
PRISM PhotoRefractive Information Storage Material
PRISM Primary Rate Interface Signaling and Maintenance ( controller )
PRM Pulse Rate Modulation
PRML Partial-Response, Maximum-Likelihood ( data channel )
PRN PseudoRandom Noise
PRNU Pixel Response Non-Uniformity
PROM Programmable Read-Only Memory
PRPG/PSA Pseudo Random Pattern Generation/Parallel Signature Analysis
PRS Pattern Recognition System
PRSI Programmable Random Signal Interconnect
PRT Platinum Resistance Thermometer
PRTD Platinum Resistance Temperature Detector
PS PolyStyrol
P&S Publish and Subscribe
PSA Parallel Signature Analysis
PSA Pilot-Symbol Assistance
PSC Permanent Split Capacitor ( motor )
PSC Pittsburgh Supercomputer Center
PSD Position Sensitive Device
PSD Power Spectral Density
PSD Programmable System Device ( WSI )
PSE Personal Secure Environment
PSG Phosphorous Silicate Glass ( process )
PSGA Polymer Stud Grid Array
PSK Phase-Shift Keying
PSM Permanenterregte SynchronMaschine
PSM Phase Shifting Mask
PSM Power System Manager
PSM Programmable State Machine
PSMC Plastic Surface Mount Component
PSN Packet Switched Network
PSNR Peak Signal-to-Noise Ratio
PSOP Plastic Small Outline Package
PSP Processor Support Package
PSPDN Packet Switched Public Data Network
PSR Programmable Switch Replacement ( ispGDX Lattice )
PSRAM Pseudo-Static RAM
PSRR Power-Supply Rejection Ratio
PSS Power Supply Sensitivity
PSTN Public Service Telephone Network
PSTN Public Switched Telephone Network
PSU PolySUlfon
Pt Platinum [ Element 78 Platin ]
PT Payload Type ( ATM )
PT Product Term
PT Punch Through ( IGBT )
PTA Post und Telekom Austria
PTAB Project Technical Advisory Board
PTAT Proportional-To-Absolute Temperature
PTB Physikalisch Technische Bundesanstalt
PTC Positive Teperature Coefficient
PTFE PolyTetraFluoroEthylene
PTH Plated-Through Hole
PTI Payload Type Indicator ( ATM )
PTL PropellerTurbinen-Luftstrahltriebwerk ( Turboprop ]
PTO Patent and Trademark Office
PTO PROFIBUS Trading Organization
PTR Potential Transformer Ratio
PTSA Product Term Sharing Array ( CPLD )
Pu Plutonium [ Element 94 after Pluto ]
PUR PolyURethane
PUT Programmable Unijunction Transistor
PV PhotoVoltaic ( system )
PV Precision Video
PV Present Value
PVA Photovoltaic AC Relay
PVA PolyVinyl Alcohol
PVAC PolyVinylACetat
PVAL PolyVinylAcetaL
PVC Permanent Virtual Connection ( ATM )
PVC PolyVinyl Chloride
PVD Photovoltaic DC Relay
PVDF PolyVinyliDene Fluoride
PVI Planmässig Vorbeugende Instandhaltung
PWB Printed-Wiring Board
PWM Pulse Width Modulation/Modulator
PWR PulsWechselRichter
pwr power
PWS Personal Web Server
PWT Personal Wireless Telecommunications
PXI PCI eXtensions for Instrumentation
PXROS Portable eXtendible Realtime Operating System
PZT Pb(lead)-Zircoate-Titanate ( dielectric compound )
PZT Pb(lead)-Zirconium-Titanate ( film capacitor )
Q Quadrature ( signal )
QA Quality Assurance
QAM Quadrature Amplitude Modulation
QANTAS Queensland And Northern Territory Aerial Services ( Ltd., australian airline, http://www.qantas.com.au )
QCCO Quadrature Current-Controlled Oscillator
QCIF Quarter Common Interface Format ( 176 by 144 pixels )
QCR Quality Control/Reliability
QDOS Quick and Dirty Operating System ( pre-MS-DOS )
QDR Quad Data Rate ( SRAM )
QE Quantum Efficiency
QEP Quadrature Encoder Pulse ( interface )
QFP Quad Flat Pack
QIC Quarter-Inch Cartridge ( tape storage system )
QIPC Quad Industrial Pack Carrier
QKZ QualitätsKennZahl ( ISO9001 )
QLS Quiet Line State ( network )
QMAC Quad-port Multiplier ACcumulator
QML Qualified Manufacturers List
QNL Quantization Noise Leakage
QOS Quality Of Service ( ATM )
QPL Qualified Products List
QPM Quasi-Phase-Matched
QPSK Quadrature Phase-Shift Keying
QPSK Quaternary Phase-Shift Keying
QQD Quarter-Quadrature Decoding
QRSL Quad Rambus Signalling Link ( multilevel signalling scheme )
QSI Quality Semiconductor Incorporated ( Santa Clara CA )
QSOP Quarter Quarter Size Outline Package
QSPI Queued Serial Peripheral Interface
QSS Quality Systems & Software
QTA Quality Test Array
QTAG Quality Test Action Group
QTP Quick Turnaround Production
qty quantity
QuEST Quad Ethernet Switching Transceiver ( AMD Am79C989 )
QUICC Quad Integrated Communications Controller ( MC68360 )
QXGA Quad XGA ( display resolution 2048 by 1536 pixels )
R Roentgen [ the quantity of x or gamma radiation such that the associated corpuscular emission per 1.293 milligramm of dry air produces, in air, ions carrying one electrostatic unit of quantity of electricity of either sign ]
Ra Radium [ Element 88 ]
RA Radiocommunications Agency ( UK )
RA Request Access
RABITS Rolling-Assisted Biaxially Textured Substrat
RAC Rambus Access Controller
RACKS Reusable Application interface for Communicating real-time KernelS
RAD Rapid Application Development
RADAR RAdio Detecting And Ranging
RADSL Rate-Adaptive DSL
RAID Redundant Array of Independent Disks
RALU Registered Arithmetic Logic Unit
RAM Random Access Memory
RAMAC Random Access Method of Accounting and Control [ IBM disk storage system 1956 ]
RAMDAC Random-Access Memory Digital-to-Analog Converter
RAMS Reliability And Maintainability Symposium
RAP Robert A. Pease [ famous author of 'Electronic Design' magazine's column 'Pease Porridge' ]
RAPID Reusable Application-specific Intellectual property Developers
RAS Remote-Access Server
RAS Row Address Strobe
RASSP Rapid prototyping of Application-Specific Signal Processors ( project )
RAVE Rendering Acceleration Virtual Engine
Rb Rubidium [ Element 37 ]
RBDS Radio Broadcast Data System
RBSOA Reverse Biased Safe Operating Area [ transistor parameters ]
RCCB Residual Current Circuit Breaker
RBOC Regional Bell Operating Company
RBT Residual Block Termination
RBW Resolution BandWidth
RCM Regulatory Compliance Mark ( Australia/New Zealand )
RDA Real-time Debug Agent
RDAC Resistor Digital-to-Analog Converter
RDBMS Relational DataBase Management System
RDF Radio Direction Finding
RDFC Resonant Discontinuous Forward Converter
RDI Remote-Defect Indication ( ATM )
RDLL Register-controlled Delay-Locked Loop
RDR Remote Data Recovery ( service Ontrack )
RDRAM Rambus DRAM
RDS Radio Data System
RDS Retinal Display System
RECAB Radio Equipment Conformity Assessment Body
Re Rhenium [ Element 75 ]
RegTP Regulierungsbehörde für Telekommunikation und Post [ ehemals BAPT ]
RELP Residual-Excited Linear Prediction
REN Remote ENable
REQ Request
RETMA Radio-Electronics-Television Manufacturers Association
RETRVIR REmote TeleRobotic Vehicle for Intelligent Remediation
Rf Rutherfordium [ Element 104 after Ernest Rutherford ]
RF Radio Frequency [ normally in the megahertz range ]
RFA Resident Flash Array
RFC Radio Frequency Choke
RFC Request For Comments
RFDE RF Design Environment ( Agilent/Cadence alliance product )
RFE Return From Exception
RFI Radio Frequency Interference [ special case of EMI wherein the induced signal falls into the RF spectrum ]
RFIC Radio Frequency Intergrated Circuit
RFID Radio-Frequency IDentification
RFP Radio Fixed Part ( DECT )
RFP Request For Proposal
RFPI Radio Fixed Part Identity ( DECT )
RFT Request For Technology ( process )
RFU Radio Frequency Unit
Rg Roentgenium [ Element 111 Röntgenium after Wilhelm Röntgen ]
RGB Red Green Blue
Rh Rhodium [ Element 45 ]
RH Relative Humidity
RHG Recording Heads Group ( Seagate )
RI Ring Indicator
RIAA Recording Industry Association of America
RIE Reactive-Ion Etching
RIM Remote Interface Modul ( code )
RINA Registro Italiano Navale
RIO Redistributed Internet Object
RIP Raster Image Processor
RIP Requiescat In Pace
RIP Routing Information Protocol [ Enables a router to exchange routing information with a neighboring router ]
RIS Random Interleaved Sampling [ one method of ETS ]
RISC Reduced Instruction Set Computing
RIX Replicated Information eXchange
RIT Rochester Institute of Technology
RKE Remote Key Entry
RLE Run-Length Encoding ( data compression )
RLL Run-Length-Limited ( data encoding )
RLS Recursive Least Squares ( algorithm )
RM Resource Management ( ATM )
RMA Radio Manufacturers Association
RMA Rate Monotonic Analysis
RMG Recording Media Group ( Seagate )
RMI Remote Method Invocation
RMII Reduced Media-Independent Interface
RMM Read Mostly Memory
RMOA Real-time Multimedia Over ATM
RMON Remote Monitoring
RMS Root Mean Square [ is derived from the square root of the average of the squares of the magnitudes ]
RMW Read-Modify-Write ( cycle )
Rn Radon [ Element 86 ]
RNC Radio Network Controller
RO Relaxation Oscillation
ROD Rewritable Optical Disk
ROI Return On Investment
ROID Relative Object IDentifier
ROM Read Only Memory
ROOF Real-time Object-Oriented Framework
ROOM Real-time Object-Oriented Modeling ( method )
ROTFL Rolling On The Floor Laughing
ROW Rest Of the World [ includes all other geographies except Japan, North America, and Europe ]
RP Rapid Prototyping
RPC Radio-Packet Controller
RPC Remote Procedure Call
RPCRT Rear-Projection Cathode-Ray Tube
RPE Reliable Processing Environment
RPE Respiratory Protective Equipment
RPG Report Program Generator
RPI Remote Process Interface
RPM Reliability Performance Measure
RPM Remote Provisioning and Maintenance
RPM Request Processing Module
rpm revolutions per minute
RPO Remote Power On
RRIO Rail-to-Rail Input/Output ( amplifier )
RRO Rail-to-Rail Output ( amplifier )
RS Record Separator ( ASCII control code )
R&S Rohde & Schwarz
RSA Rivest, Shamir and Adelman ( key )
RSC Recursive-Systematic-Convolutional ( encoder )
RSD Redundant Signed-Digit ( principle )
RSI Repetitive Strain Injury
RSSI Received Signal Strength Indicator
RSM Remote Switching Module
RSPF Reduced Standard Parasitic Format
RSS Root of the Sum of the Squares [ standard technique for summing uncorrelated noise sources ]
RST ReSeT
RSVP ReSerVation Protocol
RSX Realistic Sound eXperience
RTA Run-Time Analysis
RTAI Real-Time Application Interface
RTAPI Real-Time API
RTC Real-Time Clock
RTC Research and Technolgy Center
RTCA Radio Technical Commission on Aeronautics
RTCM Radio Technical Committe for Maritime applications
RTCP Real-time Transfer Control Protocol ( Ethernet )
RTD Resistance Temperature Detector/Device
RT/DSS Real-Time/Decision-Support Service
RTDX Real Time Data eXchange
RTEK Real-Time Embedded Kernel
RTFM Read The Fucking Manual ( net slang )
RTI Real-Time Interface
RTK Real-Time Kernel
RTL Register Transfer Level ( VHDL )
RTL Resistor-Transistor Logic
RTMA Radio-Television Manufacturers Association
RTO Return-To-One
RTOS Real-Time Operating System
RTP Real-time Transfer Protocol ( Ethernet )
RTS Real-Time Sequencing
RTS Request To Send
RTSA Real-Time Spectrum Analyzer
RTSI Real-Time System Integration ( bus )
RTT Real-Time Trace
RTTE Radio and Telecommunications Terminal Equipment
RTTY RadioTeleType
RTU Real Time Unit
RTX Real-Time eXtensions
RTZ Return-To-Zero ( data encoding scheme )
Ru Ruthenium [ Element 44 ]
RVD Rapid Vapor-phase Doping
RVO ReichsVesicherungsOrdnung
RWTÜV Rheinisch-Westfälischer Technischer Überwachungs-Verein
RX_DV Receive Data-Valid ( signal )
RX_ER Receiver Error ( signal )
s second ( time )
S Schottky ( logic )
S Siemens [ conductance, 1 S = 1 / Ohm = 1 A / V]
S Sulfur [ Element 16 Sulphur Schwefel ]
S3 Sight, Sound, Speed
S/D Signal/Distortion ( ratio )
S/H Sample and Hold
S/N Singnal-to-Noise ( ratio )
SA Source Address
SAA Standards Association of Australia
SAAF Svensk AmatörAstronomisk Förening [ Swedish Amateur Astronomer's Society ]
SAB Science Advisory Board ( EPA )
SAB Self Activating Bell
SAC Semi-Anechoic Chamber ( EMC )
SACCO Serial Access Communication COntroller
SACD Super Audio CD ( two-layer disc )
SACVD Sub-Atmospheric Chemical Vapor Deposition ( process )
SADLL Successive-Approximation DLL
SAE Society of Automotive Engineers
SAFE Secure Application Front End
SAIC Science Applications International Corporation ( San Diego CA )
SALLY Scanning Array Lens LitographY
SAM Security Account Manager ( Windows NT )
SAM Sensor Array Measurement
SAM Sequential Access Method
SAN Storage Area Network
SAN System Area Network
SANDiE Self-Assembled semiconductor Nanostructures for new Devices in photonics and Electronics
SANE Standard Apple Numerics Environment
SANZ Standards Association of New Zealand
SAPI Service-Access-Point Identifier
SAPI Speech Application Programming Interface
SAR Search And Rescue
SAR Segmentation And Reassembly ( ATM )
SAR Specific Absorption Rate
SAR Successive Approximation Register ( ADC )
SAR Synthetic-Aperture Radar
SARAM Sequential Access Random Access Memory
SAS Single Attach Station ( network )
SAS Subscriber Alerting Signal
SASI Shugart Associates Systems Interface
SAT Self-Aligned Transistor ( process )
SATER Speech-Activated Telephony E-mail Reader
SATO Self-Aligned Thick Oxide
SATRA Shoe and Allied Trade Research Association
SAW Surface Acoustic Wave
Sb Stibium [ Element 51 Antimony Antimon ]
SB Safety Basic
SB Sound Blaster
SBC Single Board Computer
SBCCS Single Byte Command Code Set
SBDS Smart Battery Data Specification
SBF Symmetric Block Formatting
SBGA Super Ball Grid Array
SBIR Small Business Innovative Research
SBLD Silicon Based Logic Design
SBN Smart Bus Node
SBP-2 Serial Bus Protocol 2
SBS Silicon Bilateral Switch
SBS Smart Battery System
SBT Surface-Barrier Transistor
Sc Scandium [ Element 21 ]
SC Short Circuit
SCA Subsidiary Carrier Authorization
SCADA Supervisory Control And Data Acquisition
SCAM Sub-Carrier Amplitude Modulation
SCAM SCSI Configured AutoMatically ( SCSI-3 )
SCAN Switched Circuit Automatic Network
SCAP Silent Compact Auxiliary Power
SCAT Surface-Controlled Avalanche Transistor
SCB SemiConductor Bridge
SCB Signal Conditioning Board
SCB Slot Control Block ( DECT )
SCC Serial Communication Channel
SCC Serial Communications Controller
SCC Smart Card Connector
SCC Source Code Control ( API )
SCC Switched Capacitor Converter
SCCS Source Code Control System
S-CDMA Synchronous Code-Division Multiple Access
SCE Single-Cotton Enamelled ( wire )
SCE Source Code Engineering
SCF Switched-Capacitor Filter
SCFM Sub-Carrier Frequency Modulation
SCI Serial Communications Interface
SCI Supply Chain Integrator
SCI System Control Interrupt
SCI/LVDS Scalable-Coherent-Interface LVDS
SCIM Standard Computer Interface Module
SCIOS Scottish Collaborative Initiative in Optoelectronic Sciences
SCL Simulation Control Language
SCM Supply Chain Management
SCO Santa Cruz Operation ( Unix )
SCODA Scan Coherent Doppler Attachment
SCOPE System Controllability Observability Partitioning Environment
SCORE Satellite Computer-Operated Readiness Equipment
SCORE Signal Communications by Orbiting Relay Equipment
SCP Serial Control Port
SCP Service Control Point
SCPI Standard Commands for Programmable Instruments ( IEEE-488.2 )
SCR Silicon-Controlled Rectifier
SCR System Call Router ( S.100 S.300 )
SCS Scalable Command Set
SCS Signal Conditioning System
SCS Silicon-Controlled Switch
SCSA Signal Computing System Architecture ( standard )
SCSI Small Computer Systems Interface
SCT Signal Cable Terminator
SCV Supply Chain Visibility
SCWT Short Circuit Withstand Time
SCXI Signal Conditioning eXtension for Instrumentation
SD Secure Digital ( memory card )
SDAI Standard Data Access Interface ( STEP )
SDC Sigma-Delta Converter
SDE Software Development Engine
SDE Software Development Environment
SDF Standard Delay Format
SDH Synchronous Digital Hierarchy
SDI Scan-Data Input
SDI Serial Data In
SDI Serial Digital Interface
SDJI Submerged Double Jet Impingement ( method )
SDK Software Developer's Kit
SDLA Successive Detection Logarithmic Amplifier
SDLC Synchronous Data Link Control
SDLVA Successive Detection Logarithmic Video Amplifier
SDM Shape Deposition Manufacturing
SDM Space Division Multiplex
SDMA Space Division Multiple Access
SDMF Single Data Message Format
SDMI Secure Digital Music Initiative
SDO Scan-Data Output
SDO Serial Data Out
SDO Service Data Object ( CAN )
SDP Software Data Protection
SDR Software-Defined Radio
SDRAM Synchronous DRAM
SDS Smart Distributed Systems
SDS Software Development Systems ( Oak Brook IL )
SDSC San Diego Supercomputer Center
SDSL Symmetric Digital Subscriber Loop
SDTV Standard-Definition TeleVision
SDU Service Data Unit ( network )
Se Selenium [ Element 34 Selen ]
SE Single-Ended ( output )
SEAM Scientific & Engineering Applications of the Macintosh ( symposium )
SEAM Smart Enterprise Asset Management
SEB Single Event Burnout
SEC Single Edge Contact
SEC Switched Ethernet Controller
SECAM Systeme Electronique Couleur Avec Mémoire ( French video standard )
SECDEC Single Error Correction Double Error Detection
SECOFI Subsecretaria de Negociaciones Comerciales Internationales
SED Surface-conduction Electron-emitter Display
SEE Single Event Effect
SEGR Single Event Gate Rupture
SEI Software Engineering Institute
SEL SELect
SELCAL SELective CALling
SELV Safety Extra Low Voltage
SEM Scanning Electron Microscope
SEMA Storage Equipment Manufacturers' Association
SEMI Semiconductor Equipment and Materials International ( trade association )
SEMKO Svenska Elektriska MaterielKOntrollanstalten
SEMM Single Electron MOS Memory
SENT Single Edge Nibble Transmission ( interface )
SEP Single Entry Point
SEPIC Single-Ended Primary Inductance Converter
SERDES SERializer/DESerializer
SERT Space Electric Rocket Test
SESAR Switched Ethernet Segmentation And Reassembly
SET Secure Electronics Transaction
SETI Searching for Extra-Terrestrial Intelligences
SEV Schweizerischer Elektrotechnischer Verein
SEV SekundärElektronenVervielfacher
SFC Sequential Function Chart
SFC Shannon-Farro Coding ( data compression )
SFC Switch Fabric Controller ( S.300 )
SFDR Spurious-Free Dynamic Range = Störungsfreier Dynamikbereich
SFF Small Form Factor ( package )
SFFPCI Small Form-Factor Personal Computer Interface
SFP Short-Fault Protection
SFQ Single-Flux Quantum
SFR Special Function Register
Sg Seaborgium [ Element 106 after Glenn T. Seaborg ]
SG Screen Grid
SGI Silicon Graphics Inc.
SGML Standard Generalized Markup Language
SGRAM Synchronous Graphic RAM
SH Sample and Hold
SH Shield
SHA Sample-and-Hold Amplifier
SHA Super High Aperture ( technology LCD )
SHARC Super Harvard ARchitecture Computer
SHF Super High Frequency ( 3-30GHz )
Si Silicium [ Element 14 Silicon Silizium ]
SI Serial Input
SI Shift-In ( ASCII control code )
SI Signal Integrity
SI Système Internationale ( d'Unités ) [ Meter, Kilogramm, Sekunde, Ampere, Kelvin, Mol, Candela ]
SIA Secondary Initialization Area
SIA Semiconductor Industry Association ( Washington DC )
SIB Serial Interface Bus
SiC Silicon Carbide [ Siliciumcarbid ]
SIC Standard Industrial Classification ( numbering code )
SICAS Semiconductor International CApacity Statistics
SICL Standard Instrument Control Library ( Hewlett-Packard )
SID Service ID
SID Society for Information Display
SID Sub-object IDentifier
SIFT Signal Integrity Filtering Technology
SIG Sistema Integrado de Gestão
SIG Special Interest Group
SiGe Silicon-Germanium ( semiconductor compound )
SII Silicon Integration Initiative
SIM Subscriber Identify Module ( GSM )
SIM System-Identification Module
SIMD Single-Instruction Multiple-Data ( architecture )
SIMM Single In-Line Memory Module
SIMOT SIMulation and Optimization Tool
SIMOX Separation by IMplanted OXygen ( silicon-on-insulator process )
SINAD SIgnal-to-Noise ratio And Distortion
SINALP Sistema Nacional de Acreditamiento de Laboratories de Pruebas ( Mexico )
SIO Serial Input/Output
SIP Serial Interface Port
SIP Simple Internet Protocol
SIP Single In-line Package
SIPP SIP Plus Protocol
SIRTF Space InfraRed Telescope Facility ( University of Rochester )
SISD Single Instruction Single Data ( mode )
SIU System Interface Unit
SKR System der KleinRechner
SKS Single Kernel Simulation
SKS Ständige Kommission für Standardisierung
SLA Site Level Aggregator ( ID IPv6 )
SLAC Stanford Linear Accelerated Center ( Menlo Park, CA )
SLAM Scanning Laser Acoustic Microscope
SLB Start-und-LandeBahn
SLD Source Level Debugging
SLD Subscriber Line Data ( interface )
SLDL System Level Design Language
SLDRAM SyncLink DRAM
SLI System-Level Integration
SLIC Subscriber-Line Interface Circuit
SLICOFI Subscriber Line Interface COdec FIlter
SLIC Supplemental Logic and Interconnect Cell ( ORCA )
SLIP Serial-Line Internet Protocol
SLM System-Level Macro
SLS System Level Silicon
Sm Samarium [ Element 62 ]
SM Siemens-Martin ( Stahl )
SM Surface Mount ( technology )
SMA Shared Memory Architecture
SMA State Machine Analyzer
SMART Selective Model Accuracy Refinement Technology
SMART Self Monitoring Analysis and Reporting Technology
SMBA Shared Memory Buffer Architecture
SMB/SOHO Small or Medium Business/Small Office Home Office
SMBus System Management Bus
SMC Surface Mount Component
SMCC Sun Microsystems Computer Corporation
SMD Surface Mounted Device
SMEMA Surface Mount Equipment Manufactures Association
SMG Special Mobile Group ( ETSI Technical Committee )
SMI System Management Interrupt
SMIF Standard Mechanical InterFace
SMII Serial Media-Independent Interface
SMM System Management Mode
SMO Stabilized Master Oscillator
SMP Symmetrical MultiProcessing
SMPS Switched-Mode Power Supply
SMPTE Society of Motion Picture and Television Engineering/Engineers
SMS Short Message Service ( GSM )
SMS Synchronous Matrix Solver
SMSC Short Message Service Center ( GSM )
SMSC Standard MicroSystems Corporation ( Hauppauge NY )
SMT Software-Managed Task
SMT Surface Mount Technology
SMTP Simple Mail Transfer Protocol
SMU Source Measure Unit
SMZ Soft-switched, Multi-resonant, Zero-current ( power controller )
Sn Stannum [ Element 50 Tin Zinn ]
SNA Scalar Network Analyzer
SNA Systems Network Architecture ( IBM protocol )
SNAFU Situation Normal - All Fucked Up
SNA/SDLC Systems Network Architecture/Synchronous Data Link Control
SNDCP Sub-Network-Dependent Convergence Protocol
SNDR Signal-to-Noise and Distortion Ratio
SNE Single-Nylon Enamelled ( wire )
SNEWS SuperNova Early Warning System
SNHC Synthetic Natural Hybrid Coding
SNI Siemens Nixdorf Informationssysteme ( AG Paderborn Germany )
SNMP Simple Network Management Protocol
SNO Sudbury Neutrino Observatory ( http://www.sno.phy.queensu.ca/ )
SNR Signal-to-Noise Ratio [ the ratio of the magnitude of the signal to that of the noise ]
SNT SchaltNetzTeil
SO Serial Output
SO Shift-Out ( ASCII control code )
SO Small Outline
SO-DIMM Small Outline Dual-in-Line Memory Module
SOA Safe Operating Area ( transistor parameters )
SOC System On a Chip
SOD Standard Outline Diode [ European outline code for standardized diode packages, i.e. SOD-27, SOD-91 etc. ]
SOF Start Of Frame
SOFC Solid Oxide Fuel Cell
SOG Sea-Of-Gates ( architecture )
SOH Start Of Header ( ASCII control code )
SOHO Small Office/Home Office
SOI Signal Of Interest
SOI Silicon-On-Insulator ( process )
SOIC Small-Outline Integrated Circuit
SOJ Small Outline with J-Lead
SOLED Stacked Organic Light-Emitting Diode ( UDC )
SONET Synchronous Optical NETwork
SOP Small Outline Package
SOPC System On a Programmable Chip
SOS Silicon-On-Sapphire ( process )
SOT Small Outline Transistor
SOT Standard Outline Transistor [ European outline code for standardized transistor packages, i.e. SOT-32, SOT-263 etc. ]
SOTA State Of The Art ( Inc. )
SOVA Soft-Output Viterbi Algorithm
SP SPace ( ASCII character code )
SP Stack Pointer
SPA Software Performance Analyzer ( HP )
SPA Software Publishers Association
SPA System Performance Analysis ( tool )
SPARC Scalable Processor ARChitecture
SPC Statistical Process Control
SPCE Signal Processing Communication Engine
SPCI Small Peripheral Component Interconnect
SPCS Stored Program Control Switching ( system )
SPD Serial Presence Detect ( memory )
SPDT Single-Pole Double-Throw ( switch )
SPEC Standard Performance Evaluation Corporation
SPEF Standard-Parasitic Extended Format
SPF Standard-Parasitic Format
SPG Sync Pulse Generator
SPG Storage Products Group ( Seagate )
SPGA Software Programmable Gain Amplifier ( ST )
SPGA Staggered Pin Grid Array
SPGA System Programmable Gate Array ( Actel )
SPI Serial Peripheral Interface ( Motorola )
SPI Service Provider Interface
SPICE Simulation Program with Integrated Circuit Emphasis
SPL Series Processing Language
SPLD Simple PLD
SPP Standard Parallel Port
SPOC Single-Point Orbit Calculator
SPOF Single Point Of Failure
SPR Special Purpose Register
SPS SpeicherProgrammierbare Steuerung
SPS Standard Positioning Service ( 1575.42 MHz GPS )
SPS Standby Power Supply/System
SPST Single-Pole Single-Throw ( switch )
SPXO Simple Packaged Crystal Oscillator
SPW Signal Processing WorkSystem
sq square
SQC Statistical Quality Control
SQK Statistische QualitätsKontrolle
SQL Structured Query Language
SQPSK Staggered Quadrature Phase-Shift Keying
SQTP Serialized Quick Turnaround Production
SQUID Superconducting QUantum Interference Device
Sr Strontium [ Element 38 ]
SRAM Static Random Access Memory
SRC Segmentation and Reassembly Controller ( ATM )
SRC Super Reflective Color ( LCD )
SRCS Safety Related Control Systems
SRD Short Range Device ( low power radio )
SRET Satellite des Recherches et Etudes Technologiques
SRI Stanford Research Institute
SRN Service Request Node
SRO Strontium-Rubidium-Oxide
SRQ Service Request
SRS Sound Retrieval System
SRS Stanford Research Systems ( Sunnyvale CA )
SS7 Signaling System 7
SSA Serial Storage Architecture
SSA Super Self-Aligned ( SiGe process )
SSB Single Side Band
SSC Single-Silk Covered ( wire )
SSC Software Systems Committee
SSC Synchronous Serial Channel
SSCT Surface-Stabilized Cholestric Texture ( mode LCD )
SSD Solid State Disk
SSD Storage Systems Division ( IBM )
SSDA Serial Sequential Distributed Arithmetic ( technique )
SSE Source Spontaneous Emission
SSET Switching System Exchange Termination
SSFDC Solid State Floppy Disk Card
SSFLCD Surface-Stabilized FerroElectric Liquid Crystal Display
SSI Small-Scale Integration
SSID Simulcast System Identification
SSL Secured Sockets Layer
SSM Small Semiconductor Memory
SSMA Spread Spectrum Multiple Access
SSOP Shrink Small Outline Package
SSP Synchronous Serial Port
SSR Solid-State Relay
SSRAM Synchronous SRAM
SST Silicon Storage Technology ( Inc., Sunnyvale, CA )
SST System Scanner Technology
SSTL Stub Series Transistor Logic
SSTL Series-Stub-Terminated Logic
SSTS Solid-State Transfer Switch
SSTV Slow-Scan TeleVision
ST Strukturierter Text ( SPS )
STAR Self-Test And Repair ( memory system )
STB Set-Top Box ( TV )
STB SPARC Technology Business ( Sun )
STB Strobe
STC Standard Test Conditions
STE Symbolic Trajectory Evaluation
STED STimulated Emission Depletion
STE Symbolic Trajectory Evaluation
STEP STandard for the Exchange of Product data ( ISO )
STF Straight Through Flow
STI Searching for Terrestrial Intelligences
STIM Smart/Standard Transducer Interface Module
STL Standard Library Template
STM-1 Synchronous Transport Module level 1
STN Super Twisted Nematic ( LCD )
STOL Short Take-Off and Landing [ Kurzstartflugzeug ]
STP Shielded Twisted Pair
STP Standard Temperature and Pressure
STS Singapore Techonologies Semiconductors
STTL Schottky Transistor-Transistor Logic
STX Start of TeXt ( ASCII control code )
STZP Steinbeis TransferZentrum Prozessautomatisierung ( Germany )
SUB Substitute ( ASCII control code )
SUN Stanford University Network
SUNY State University of New York ( Stony Brook, http://www.sunysb.edu )
SV Set Value
SV System Value
SVC Switched Virtual Circuit
SVD Simultaneous Voice and Data ( technology )
SVF Serial Vector Format ( CPLD )
SVG Silicon Valley Group ( San Jose CA )
SVGA Super Video Graphics Array ( 800 by 600 pixels )
SVGB Super Variable Grain Block ( FPGA )
S-VHS Super VHS
SVID System V Interface Definition [ AT&T's formal specification for compatibility with the UNIX operating system ]
SVM Space Vector Modulation
SVN Switched Virtual Networking
SVPC Silicon Valley Personal Computer ( Design Conference )
SVS Supply Voltage Supervisor
SW SoftWare
S/W Schwarz/Weiss
SWAC Single Wide-Area Connection
SWAP Shared Wireless Access Protocol
SWF Sudden Wave Fade-out ( phenomenon )
SWG Standard Wire Gauge
SWIFT Society for Worldwide Interbank Financial Telecommunications
SWIM Super Woz Integrated Machine [ custom IC that controls the floppy disk interface of an Apple Macintosh computer ]
SWL Short-Wave Listener
SWPWM Sinusoidally Weighted Pulse-Width Modulation
SWR Standing-Wave Ratio
SWS Single White Silk ( wire )
SWTL Surface-Wave Transmission Line
SWFV SelbstWählFernVerkehr
SXGA Super XGA ( 1280 by 1024 pixels )
SYEMON Simple Yet Effective Methods Operate Nicely
SYN SYNchronous idle ( ASCII control code )
T Tera ( 10^12 )
T Tesla ( Magnetische Flussdichte, 1 T = 1 Wb / m^2 )
T1 Telephony level 1 ( interface 1.5 Mbit/s )
Ta Tantalum [ Element 73 Tantal ]
TA Terminal Adapter
TAAAG Type Approval Advisory Ad-hoc Group ( ISDN )
TAB Tape-Automated Bonding
TAC Total Area Coverage ( system )
TAD Telephone-Answering Device
TADIC Telemetry Analogue-to-Digital Information Converter
TAF Technologically Advanced Family
TAFUBAR Things Are Fouled Up Beyond All Recognition
TAM Total Available Market
TAN Technisch begründete ArbeitsNorm
TAN The Audiophile Network ( http://www.TANet.com )
TANSTAAFL There Ain't No Such Thing As A Free Lunch ( net slang )
TAO Telephony Application Objects ( SCSA )
TAP Test Access Port ( JTAG )
TAPI Telephony Applications Programming Interface ( Microsoft )
TARFU Things Are Really Fouled Up
TAS Telecom Analysis Systems ( Eatontown NJ )
TASI Time Assignement Speech Interpolation
TAT Turn-Around Time
Tb Terbium [ Element 65 after the village of Ytterby ]
TBA To Be Announced
TBC Test Bus Controller ( JTAG )
TBGA Tape Ball-Grid Array ( package )
TBR Technical Basis for Regulation
TBR Time Break Recall
TBTA Triborough Bridge and Tunnel Authority
TBWP Triple-Braid WeatherProof ( wire )
Tc Technetium [ Element 43 ]
TC Temperature Coefficient
TC Transmission Convergence ( sublayer )
TCAT Test-Coverage-Analysis Tool ( Java )
TCC Turbo Convolutional Code
TCDD 2,3,7,8-TetraChloroDibenzo-p-Dioxin
TCE Thermal Coefficient of Expansion
TCF Technical Construction File ( EMC )
TCG Teleport Communications Group ( AT&T )
TCK Test Clock Input ( JTAG )
TCL Tool Command Language
TCM Trellis-Coded Modulation
TCO Total Cost of Ownership
TCP Tape Carrier Package
TCP Tool Center Point ( sensor )
TCP Transmission Control Protocol
TCP/IP Transmission Control Protocol/Internet Protocol
TCPR Trellis-Coded Partial Response
TCR Temperature Coefficient of Resistance
TCRT Thin Cathode Ray Tube
TCSPC Time-Correlated Single Photon Counting
TCVCXO Temperature-Compensated Voltage-Controlled Crystal Oscillator
TCXO Temperature-Compensated Crystal Oscillator
TDC Tabular Data Control ( HTML )
TDC Time-to-Digital Converter
TDD Time-Division Duplexing
TDD Timimg-Drive Design
TDEL Thick-Dielectric ElectroLuminiscence
TDF Technical Data Freeway ( Inc. Concord MA )
TDF Technology Data Format ( TMA )
TDI Test Data In ( JTAG )
TDL Tunable Diode Laser
TDM Time-Division Multiplex
TDMA Time-Division Multiple-Access
TDMS Transitional Minimized Differential Signaling
TDO Test Data Out ( JTAG )
TDR Tape Drive Register ( IBM PC-AT and PS/2 )
TDR Time Domain Reflectometer
TDT Time Domain Transmission
TDX Time Domain Crosstalk
Te Tellurium [ Element 52 Tellur ]
TE Test Enable ( input )
TE1 Terminal Equipment 1 ( ISDN terminal )
TE2 Terminal Equipment 2 ( Non-ISDN terminal )
TEC ThermoElectric Cooler ( Peltier )
TED Transient-Enhanced Diffusion
TEDS Transducer Electronic Data Sheet
TEF Toxicity Equivalence Factors
TEFC Totally Enclosed Fan Cooled
TEG Technologie-EntwicklungsGruppe ( Fraunhofer TEG, Stuttgart, Germany )
TEI Terminal Endpoint Identifier
TEK Traffic Encryption Key
TEM Transmission Electron Microscope
TEM Transverse Electric and Magnetic ( mode )
TERMPWR TERMinator PoWeR ( SCSI )
TETRA Trans-European Trunked Radio ( standard )
TFC Time Frequency Code
TFF T type Flip-Flop
TFMS Thin-Film Micro-Strip ( transmission line )
TFO Tuning Fork Oscillator
T-FOLED Transparent Flexible Organic Light-Emitting Diode ( UDC )
TFSOI Thin-Film Silicon-On-Insulator ( process )
TFT Thin Film Transistor ( LCD )
TFTP Trivial File Transfer Protocol
TFTS Terrestrial Flight-Telephone System
TGA Technische GebäudeAusrüstung
TGL Technische ( Normen ), Gütevorschriften und Lieferbedingungen [ DDR- und Fachbereichstandards ]
TGTP Tuned-Grid Tuned-Plate ( circuit )
Th Thorium [ Element 90 ]
TH Technische Hochscule
THD Total Harmonic Distortion
THM Total Harmonics Management ( concept )
Ti Titanium [ Element 22 Titan ]
TI Texas Instruments ( Inc. Dallas TX )
TIA Telecommunications Industry Association
TIA Time-Interval Analyzer
TIA Totally Integrated Automation
TIA TransImpedance Amplifier
TICL Temperature-Induced Cable Loss
TIFF Tagged Image File Format [ industry standard for bit-mapped graphic files ]
TIGA Texas Instruments' Graphics Architecture
TII Transducer-Independent Interface
TIM Time Interval Meter
TIM Traffic-Interface Manager
TIN Technical Information Notice
TinyTP Tiny Transport Protocoll ( IrDA )
TIPS Theory of Inventive Problem Solving
TIPS Trillion Instructions Per Second
TIR Total Internal Reflection
TIRIS Texas Instruments Registration and Identification System
TIROS Television and InfraRed Observation Satellite
TKG TeleKommunikationsGesetz
TKO Technische KontrollOrganisation
TKZulV TeleKommunikationsZulassungsVerordnung
Tl Thallium [ Element 81 ]
TL Turbinen-Luftstrahltriebwerk [ Strahlturbine ]
TLA Top Level Aggregator ( ID IPv6 )
TLA True Logarithmic Amplifier
TLB Translation Look-aside Buffer
TLC Thin-Layer Chromatography
TLD ThermoLuminescent Dosimeter [ crystalline material that emits light if it is heated after being exposed to radiation ]
TLI Transport Layer Interface ( API, TCP/IP )
TLM TAP Linking Module
TLS Transport Layer Security ( protocol )
TLS Tunable Laser Source
TLV Threshold Limit Value
Tm Thulium [ Element 69 ]
TMA Technology Modelling Associates ( Sunnyvale CA )
TMDS Transition-Minimized Differential Signaling
TMF Thin Metal Film ( batterie technology )
TMN Telecom Management Network
TMS Test Mode Select ( JTAG )
TMSL Test and Measurement Systems Language ( HP )
TN Tennessee
TN Twisted Nematic ( LCD )
TNC Threaded Neill Concelman ( connector )
TNT TriNitroToluol
TO Transistor Outline [ U.S. American code for JEDEC registered transistor packages, i.e. TO-3, TO-220 etc. ]
TOC Table Of Contents
TOD Time Of Delivery
TOF Time of Filing
TOF Timer OverFlow
TOF Top Of Form ( printer )
TOP Trade Opportunities Program
TOS Tape-Operating System
TP Transaction Processing
TP Twisted Pair ( 10BASE-T )
TPC Turbo Product Code
TPCU Test Power Control Unit
TPE ThermoPlastische Elastomere
TPE Twisted Pair Ethernet
TPG Test Pattern Generator
TP4 Transport Protocol class 4
TPI Tracks Per Inch
TPM Trusted Platform Module
TPU Thermoplastisches PolyUrethan
TPU Timer Processing Unit
TQFP Thin Quad Flat Pack
TQM Total Quality Management
TQN Theoretical Quantization Noise
TR Transmit/Receive ( Switch )
TRAC Telecommunications Research and Action Center ( Washington DC )
TRAPATT Trapped Plasma Avalanche Triggered Transit ( diode )
TRAU Transcoder Rate Adaption Unit
TRF Tuned Radio Frequency ( receiver )
TRG Trigger ( IEEE488.2 )
TRIAC TRIode AC ( switch )
TRK Target Resident Kernel
TRON The Real-time Operating system Nucleus
TRP Total Radiated Power
TRST# Test ReSeT input ( active low )
Ts Tennessine [ Element 117 Tenness, after Tennessee ]
TS Transistor Standard [ U.S. American code for JEDEC standard transistor packages ]
TS Transparent Substrate ( LED )
TS Transport Stream
TSA Time Slot Assigner
TSAPI Telephony Services Application Programming Interface ( Novell & AT&T )
TSB Technical Systems Bulletin ( TIA )
TSB Telecommunications Standards Board
TSC Target System Controller
TSC Technical Support Centre
TSI Time Slot Interchange (switch )
TSLP Thin Small Leadless Package
TSMC Taiwan Semiconductor Manufacturing Company
TSO Test Suit Operation ( DECT )
TSOP Thin Small Outline Package
TSPC True Single-Phase Clocked ( logic )
TSR Temperature Sensing Resistor
TSR Terminate-and-Stay-Resident ( program )
TSSOP Thin Shrink Small Outline Package
TSU Time Slot Unit
TTA Time-Triggered Architecture ( Esprit Open Microprocessor Systems Initiative )
TTCN Tree & Tabular Combined Notation [ ISO standard conformance test language ]
TTE Telecommunications Terminal Equipment
TTFF Time To First Fix ( GPS )
TTL Through-The-Lens
TTL Time-To-Live ( field, IP )
TTL Transistor-Transistor Logic
TTP Time-Triggered Protocol ( Esprit Open Microprocessor Systems Initiative )
TTP/C Time-Triggered Protocol class C version [ Class C application is safety critical, without a mechanical back-up ]
TTS Text To Speech ( software engine )
TTY TeleTYpe
TU Technische Universität
TUBA TCP/UDP with Bigger Addresses ( protocol IPv9 )
TUCZ Technische Universität Chemnitz-Zwickau ( Germany )
TUHH Technische Universität Hamburg-Harburg ( Germany )
TV TeleVision
TVL TeleVision Lines
TVS Transient Voltage Suppressor
TVSOP Thin Very Small Outline Package
TWA Time-Weighted Average
TWA Travelling Wave Amplifier
TWD TaiWan Dollar
TWT Travelling-Wave Tube
TX Texas
TX_ER Transmit Error ( signal )
TÜ Technische Überwachung
TÜV Technischer Überwachungs-Verein
U Uranium [ Element 92 after Uranus ]
UART Universal Asynchronous Receiver/Transmitter
UAV Unmanned Airborne Vehicle [ drone ]
UAWG Universal ADSL Working Group
UBC University of British Columbia ( Vancouver, Canada )
UBR Unspecified Bit Rate ( ATM )
UBT Universal Bus Transceiver
UCA2 Utility Communications Architecture version 2 ( IEEE standard )
UCAID University Corporation for Advanced Internet Development
UCCE University Consortium for Continuing Education
UCD Upstream Channel Description
UCE Union Carbide Electronics
UCLA University of California, Los Angeles
UCSD University of California, San Diego
UDC Universal Display Corporation ( Bala Cynwyd PA )
UDCP USSD Dialogue Control Protocol ( GSM )
UDF User Definable Font
UDL Uniformly Distributed Load
UDP User Datagram Protocol [ A TCP complement that offers a connectionless datagram service that guarantees neither delivery nor correct sequencing of delivered packets (much like IP) ]
UDWDM Ultra-Dense Wavelength-Division Multiplexing [ 1022 channels of 37 Mbits/s on a single fiber, 37 Gbits/s network demonstrated by researchers from Bell Labs ]
UEL Upper Explosive Limit
UES User Electronic Signature
UFO Unidentified Flying Object
UFPT Ultra Fine Pitch Technology
UFS Ultra-Fast Switching
UHCI Universal Host Controller Interface
UHD Ultra-High Density
UHF Ultra-High Frequency ( 300MHz-3GHz )
UHS Ultra-High Speed
UHV UltraHigh Vacuum
UHV/CVD Ultra-High Vacuum Chemical Vapor Deposition
UI Unit Interval ( SCSI )
UIC Union Internationale des Chemins de fer [ Internationaler Verband der normalspurigen europäischen Eisenbahnen ]
UIF USB Interface Firmware
UIFN Universal International Freephone Number
UIO Universal InterOperability
UIOC Universal I/O Controller
UIS Unclamped Inductive Switching
UJT UniJunction Transistor
UL Underwriters' Laboratories
UL Unit Load
ULA Uncommitted Logic Array
ULC Underwriters' Laboratories of Canada
ULC Universal Logic Circuit
ULI Upper Level Interface ( ASAM )
ULP Ultra Low Power
ULP Upper Level Protocol
ULPM Universal Linear Power Module
ULS Unknown Line State
UMA Unified Memory Architecture
UMB Ultra Mobile Broadband
UMC United Microelectronics Corporation ( Taiwan )
UML Unified Modeling Language ( OO )
UML Universal Modeling Language
UMS Unified Messaging Server
UMTS Universal Mobile Telecom Services
UMTS Universal Mobile Telecommunication System
UNC Unified Coarse ( thread )
UNC Universal Naming Convention
UNC University of North Carolina ( at Chapel Hill, www.unc.edu )
UNESCO United Nations Educational Scientific and Cultural Organization
UNF Unified Fine ( thread )
UNH IOL University of New Hampshire InterOperability Laboratory
UNI User Network Interface
U-NII Unlicensed National Information Infrastructure
UNM University of New Mexico ( Albuquerque NM )
UNS Unified Special ( thread )
UPC Usage Parameter Control
UPROM Unerasable Programmable Read-Only Memory
UPS Uninterruptible Power Supply/System
UPS United Parcel Service
UR UltraRot ( = IR )
URAN Universally Reconstructable Artificial Neural ( network )
URL Universal Resource Locator
URS Unifiziertes RegelungsSystem
US Unit Separator ( ASCII control code )
USA United States of America
USAC United States Auto Club
USART Universal Synchronous/Asynchronous Receiver/Transmitter
USB Universal Serial Bus
USB Upper SideBand
USBPG Universal Serial Bus Promoter Group
USCAR United States Council for Automotive Research
USDA United States Department of Agriculture
USDC United States Display Consortium
USIC User-Specific Integrated Circuit
USOC Universal Service Ordering Codes
USPS United States Postal Services
USSD Unstructured Supplementary Service Data ( GSM )
USTR United States Trade Representative
USV Unterbrechungsfreie StromVersorgung
UT Universal Time
UT Utah
UTC Universal Time Coordinated
UTE Union Technique de l'Electricité
UTI Universal Test Interface
UTI Universal Transducer Interface
UTM Ultra Thin Multilayer ( board )
UTOPIA Universal Test and Operations Physical layer Interface to ATM
UTP Unshielded Twisted Pair
UTQFP Ultra Thin Quad Flat Pack
UTRA Universal Terrestrial Radio Access
UTSLP Ultra Thin Small Leadless Package
UUT Unit Under Test
UV UltraViolet [ Ultraviolett, Spektralbereich elektromagnetischer Wellen mit Wellenlängen zwischen 1,0 und 390 nm ]
UVLO UnderVoltage LockOut
UWB Ultra Wide Band
UXGA Ultra XGA ( 1600 by 1200 pixels )
V Vanadium [ Element 23 ]
V Volt ( voltage )
VA Virginia
VA Volt-Amperes
VABS Vehicle ABStraction ( software module )
VAC Vacuumschmelze ( GmbH Hanau Germany; Corporation Oklahoma City OK )
VAC Volts Alternating Current
VAFC VESA Advanced Feature Connector
VAFE Voice Audio FrontEnd
VAM Voltage Amplitude Modulation ( LCD )
VAN Vehicle Area Network
VAR Value-Added Reseller
VATM Verband der Anbieter von Telekommunikations- und Mehrwertdiensten ( e.V. Köln Germany )
VATP Vector Adaptive Transform Processing
VB Vibrator
VBAFE Voice-Band Analogue Front End
VBAP Voice-Band Audio Processor
VBE/AF VESA BIOS Extensions/Accelerator Functions
VBE/FP VESA BIOS Extensions/Flat-Panel
VBI Vertical Blanking Interval
VBM Virtual Block Map
VBNS Very-high Bandwidth Network Service
VBR Variable Bit Rate ( ATM )
VC Varnished-Cambric ( insulated wire )
VC Vector Controlled ( drive )
VC Venture Capital
VC Virtual Channel
VC Virtual Circuit ( ATM )
VC Virtual Component
VCA Voltage-Controlled Amplifier
VCB Volume Control Block
VCC Virtual Channel Connection ( LANE )
VCC Virtual Component Codesign
VCC Voice-Controlled Carrier
V-Chip Violence Chip ( TV )
VCI Virtual Channel Identifier ( ATM )
VCM Verilog Model Compiler
VCM Virtual Channel Memory
VCO Voltage-Controlled Oscillator
VCP Video Communications Processor
V-CPU Virtual CPU
VCR Video Cassette Recorder
VCR Voltage-Controlled Resistor
VCS Voice Control System
VCSDRAM Virtual Channel Synchronous Dynamic Random Access Memory ( NEC )
VCSEL Vertical Cavity Surface-Emitting Laser
VCX Virtual Component eXchange
VCXO Voltage-Controlled Crystal Oscillator
VDC Venture Development Corporation ( Natick MA )
VDC Volts Direct Current
VDE Verband Deutscher Elektrotechniker
VDEW Vereinigung Deutscher ElektrizitätsWerke
VDI Verein Deutscher Ingenieure
VDI Virtual Diagonal Interconnect ( scheme )
VdL Verband der Leiterplattenindustrie
VDMA Verband Deutscher Maschinen- und Anlagenbau
VDR Voltage-Dependent Resistor
VDS Voltage Detection System
VDSL Very high-speed Digital Subscriber Loop
VDSL Very high bitrate Digital Subscriber Line
VDSM Very Deep SubMicron ( technology < 0.18µm )
VDX Vehicle Distributed eXecutive
VEC Virtual Embedded Circuitry
VEE Visual Engineering Environment ( HP )
VELab Virtual Environments Labor ( HLRS )
VES Vision-Enhancing System
VES VollElektrische Glasschmelze
VESA Video Electronics Standards Association
VFA Voltage Feedback Amplifier
VFD Vacuum Fluorescent Display
VFD Variable-Frequency Drive
VFI Video Firmware Interface
VFO Variable-Frequency Oscillator
VGA Variable-Gain Amplifier
VGA Video Graphics Array ( 640 by 480 pixels )
VGB Variable-Grain Block ( FPGA )
VGC Video-Graphics Controller
VHC Very High-speed CMOS
VHDCI Very-High-Density Cable Interconnect
VHDL VHSIC Hardware-Description Language
VHDM Very High Density Metric ( connector )
VHF Very High Frequency ( 30-300MHz )
VHS Vertical Helical Scan [ video recording standard ]
VHSIC Very High-Speed Integrated Circuit
VI VHDL International ( San Jose CA )
VI Virtual Instrument ( LabVIEW )
VIA Versatile Interface Adapter
VICS Vehicle Information & Communication System
VID Voltage Identification ( code )
VIP Vertically Integrated PNP ( process )
VIP Video Interface Palette
VIP Video Interface Port
VIP Visual Interactive Profiler
VIPP Verified Interconnect Process Parameters
VIRGE VIdeo and Rendering Graphics Engine ( S3 )
VIS Visual Instruction Set ( SPARC )
VIS Voltage Indicating System
VISA Virtual Instruments Software Architecture
VISSR Visible Infrared Spin-Scan Radiometer
VITA VMEbus International Trade Association
VITAL VHDL Initiative Towards ASIC Libraries
VITS Vertical Interval Test Signal
VIUF VHDL International User's Forum
VK VergaserKraftstoff
VLA Voltage Limiting Amplifier
VLC Visual Logic Controller
VLED Visible Light Emitting Diode
VLES Variable Length Execution Set
VLF Very Low Frequency ( waves, 3-30kHz )
VLIW Very Long Instruction Word
VLSI Very Large Scale Integration
VM Virtual Machine
VME Versatile Modular E-bus ( VERSAbus-E )
VMI Video Module Interface
VMIC VME Microsystems International Corporation ( Huntsville AL )
VMIP VXIbus Modular Instrumentation Platform
VMM Virtual MultiMeter
VMTP Versatile Message Transaction Protocol
VNA Vector Network Analyzer
V-NIC antiViral Network Interface Card
VOA Variable Optical Attenuator
VoATM Voice over ATM
VOC Volatile Organic Compound
VODAT Voice-Operated Device for Automatic Transmission
VOE Variable Optical Equalizer
VOFDM Vector Orthogonal Frequency-Division Multiplex ( broadband fixed-wireless technology )
VoDSL Voice over DSL
VoFR Voice over Frame Relay
VoIP Voice over Internet Protocol
VOL VOlume Label
VoN Voice over Networks
VOP Video Object Plane ( MPEG-4 )
VP Virtual Path ( ATM )
VPC Virtual Product Console
VPC Voice Processing Corporation ( Cambridge MA )
VPCI Virtual Path Connection Identifier
VPE Video-Processing Element
VPEC Virginia Power Electronics Center ( Blacksburg VA )
VPI Virtual Path Identifier ( ATM )
VPI Visual Programming Interface
VPL Visual Programming Language
VPM Video Port Manager
VPM Virtual Product Modelling
VPN Virtual Private Network [ A remote LAN that can be accessed through the Internet by using PPTP ]
VPS Vapor Phase Soldering
VPS Video Playback System
VPW Variable Pulse Width
VQFP Very-thin Quad Flat Pack
VR Virtual Reality
VR Voltage Regulator ( tube )
VRM Voltage Regulator Module
VRML Virtual Reality Modeling Language
VROOMM Virtual Runtime Object-Oriented Memory Manager
VRP Voice Recognition Processor ( OKI )
VSAT Very Small Aperture ( satellite ) Transceiver/Terminal
VSC Voltage-Supply Converter
VSD Variable-Speed Drive
VSELP Vector-Sum-Excited Linear Prediction
VSI Verband der SoftwareIndustrie ( Deutschlands, Germany )
VSI Virtual Socket Interface
VSIA Virtual Socket Interface Alliance ( San Jose CA )
VSO VITA Standards Organization
VSOP Very-Small Outline Package
VSP Virtual Single Processor ( model )
VSP Virtual Software Processor
VSP/TAP Virtual Software Processor/Target Access Probe
VSQ VergleichsStrahlungsQuelle ( EMV )
VSSI Very Small Scale Integration
VSWR Voltage Standing Wave Ratio
VT Vacuum Tube
VT Vertical Tabulator ( ASCII control code )
VTC Vehicular Technology Conference
VTL VISA Transition Library
VTP Virtual Terminal Protocol [ Telnet, a terminal emulation protocol for logging on to remote computers ]
VTOA Voice and Telephony Over ATM
VTOA Voice Traffic Over ATM
VTOL Vertical Take-Off and Landing [ Senkrechtstartflugzeug ]
VTVM Vacuum Tube VoltMeter
VU Volume Unit ( indicator )
VUD Verband der Unterhaltungssoftware Deutschland ( Germany )
VUMA VESA Unified Memory Architecture
VVA Voltage-Variable Attenuator
VVC Voltage-Variable Capacitance
VVM Variable Voltage Material
VXC Voice eXchange Card
VXI VME eXtensions for Instrumentation
W Watt [ electrical power, 1 W = 1 J / s ]
W Wolframium [ Element 74 Tungsten Wolfram ]
W3C World Wide Web Consortium
WA Washington
WAAS Wide-Area Augmentation System [ GPS data correction service ]
WAE Wireless Application Environment
WAIS Wide-Area Information Server [ A network publishing system designed to help users find information over a computer network ]
WAN Wide Area Network [ A communications network that connects geographically separated areas ]
WAO Wissenschaftliche ArbeitsOrganisation
WAP Wireless Application Protocol
WARP Weight Associative Rule Processor
WATS Wide-Area Telephone Service
Wb Weber [ Magnetischer Fluss, 1 Wb = 1 V * s ]
WBEM Web-Based Enterprise Management
WBTBGA Wire Bond Tape Ball Grid Array
WCD Wireless Communications Division
W-CDMA Wideband Code-Division Multiple-Access
WCMP Wireless Control Message Protocol
WCPE Wireless Customer-Premise Equipment
WCS Writable Control Store
WD Western Digital
WDF Wave Digital Filter
WDM Wavelength-Division Multiplexing ( network )
WDM Windows Driver Model
WDP Wireless Datagram Protocol
WDT Watchdog Timer
WDX Wave-length Dispersive X-ray
WECC Western European Calibration Cooperation
WEEE Waste in Electronics and Electrical Equipment ( directive for leadless manufacturing processes )
WEP Wired Equivalent Privacy
WFC Windows Foundation Classes ( Java )
WFM Wired For Management ( Intel initiative )
WGMA Wissenschaftlich-technische Gesellschaft für Mess- und Automatisierungstechnik
WHO World Health Organisation
WHQL Windows Hardware Quality Lab
WI Wisconsin
WIG Wolfram-InertGas ( Schweissen ) [ Schmelzschweissverfahren mit nicht abschmelzender Wolframelektrode in einer inerten Schutzgasatmosphäre ]
WIG Workgroup Internet Gateway
WILCO WILl COmply
WiMAX Worldwide interoperability for Microwave Access
WINHEC WINdows Hardware Engineering Conference
WINLAB Wireless Information Networking LABoratory ( New Brunswick NJ )
WIP Work In Progress
WITS Workshop on Internet Technology & Systems
WiUSB Wireless USB
WLAN Wireless Local Area Network
WLCSP Wafer Level Chip Scale Package
WLL Wireless Local Loop
WML Wireless Markup Language
W-OFDM Wideband Orthogonal Frequency-Division Multiplexing
WORA Write Once, Run Anywhere ( architecture )
WORM Write Once, Ready Many times
WPAN Wireless Personal Area Network
WPB Write-Per-Bit ( function )
WRAM Window RAM
WRB Web Request Broker
WRS Wind River Systems
WSC Winter Simulation Conference
WSG Wait-State Generator
WSI WaferScale Integration ( Inc. Fremont CA )
WSM Write State Machine
WSP Wireless Session Protocol
WSPW WaferStarts Per Week
WSS Windows Sound System
WSTS World Semiconductor Trade Statistics
WTA Wireless Telephony Application
WTLS Wireless Transport Layer Security
WTO World Trade Organization
WTP Wireless Transaction/Transfer Protocol
WUXGA Wide Ultra XGA ( 1900 by 1200 pixels )
WV Working Voltage
WVLAN Wireless Virtual LAN
WWW World Wide Web
WYSIWYG What You See Is What You Get
WZB WissenschaftsZentrum für Sozialforschung ( Berlin Germany )
XBIU eXternal Bus-Interface Unit
XCVR Transceiver
XDR eXternal Data Representation
Xe Xenon [ Element 54 ]
XGA eXtended Graphics Adaptor ( 1024 by 768 pixels )
XIP eXecute In Place
Xmit transmit
XML eXtensible Markup Language
XNF Xilinx Netlist Format
XO Crystal Oscillator
XOR eXclusive-Or
XPDS Xerox Professional Document Services
XPLA eXtended Programmable Logic Array ( Philips )
XRAM eXtended RAM ( µC )
XSVF Xilinx Serial Vector Format
Xtal crystal
Y Yttrium [ Element 39 ]
Y2K Year 2000
YACC Yet Another Compiler Compiler
YAFIYGI You Asked For It, You Got It
YAG Yttrium-Aluminum-Garnet ( crystal )
YAG:Nd Yttrium Aluminum Garnet:Neodym ( LASER )
Yb Ytterbium [ Element 70 ]
YBCO Yttrium, Barium, Copper, and Oxygen ( superconducting compound )
Y/C Y(luminance)-Chrominance ( signal )
YGaIG Yttrium Gallium Iron Garnet
YIG Yttrium Iron Garnet
YUV (Y)luminance and (U,V)chrominance ( color space standard )
ZAB Zweistufiger hydromechanischer AuswerferBeschleuniger
ZBBS Zilog Bulletin Board Service
ZBT Zero Bus Turnaround ( memory )
ZCAV Zone Constant Angular Velocity
ZEBRA Zero Energy Breeder Reactor Assembly
ZIA Zero-power Interconnect Array
ZIF Zero Insertion Force
ZIF Zero Intermediate Frequency [ receiver = direct-conversion receiver ]
ZIP Zigzag-In-line Package
ZIP Zone Improvement Plan ( code )
ZMD Zentrum Mikroelektronik Dresden ( GmbH Dresden Germany )
Zn Zincum [ Element 30 Zinc Zink ]
ZnO Zinc Oxide
Zr Zirconium [ Element 40 Zirkonium ]
ZTA Zirconia Toughened Alumina ( ceramic )
ZTAT Zero Turn Around Time
ZTK ZwischenkreisTrennKlemme
ZTL ZweistromTurbinen-Luftstrahltriebwerk
ZTU Zeit-Temperatur-Umwandlungsschaubild
ZV ZentralVerriegelung
ZV Zoom Video ( interface )
ZVEI ZentralVerband Elektrotechnik- und ElektronikIndustrie ( Germany )
ZVS Zero Voltage Switching
ZVS HB Zero Voltage Switched Half Bridge ( converter )
ZVT Zero Voltage Transition ( switching )
ZWS Zero Wait State
µ micro ( 10^-6 )
µBGA Micro Ball Grid Array
µC MicroComputer
µCBIC MicroController Cell-Based Integrated Circuit
µCE MicroCombinatorial Element ( FPGA )
µP MicroProcessor
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