Abkuerzungen

A	Ampere
ABI	Application Binary Interface - Specification for hardware platform and operating system
ABR	Available Bit Rate traffic - ATM networking level
ABR	AutoBaud Rate detect
AC	Alternating Current. Also Audio Codec.
ACD	Automatic Call Distribution - Routing of an incoming telephone call to next available operator
ACE	Advanced Computing Environment - Open standard based on UNIX and Windows NT
ACIA	Asynchronous Communication Interface Adapter
ACK	Acknowledge, Logic signal
ACP	Audio Control Panel
ACPI	Advanced Configuration Power Interface
ACPR	Adjacent Channel Power Ratio
ACS	Asynchronous Communications Server - Communications server managing pool of modems
ACTS	Advanced Communications Technologies and Services
A/D	Analogue to Digital
ADB	Apple Desktop Bus - Macintosh communications port for input devices
ADC	Analogue to Digital Converter
ADCCP	Advanced Data Communications Control Procedures
ADLC	Advanced Data Link Controller
ADPCM	Adaptive Differential Pulse Code Modulation
ADS	AutoCAD Development System - Facility allowing C routines to be run from within AutoCAD
ADSL	Asymmetrical Digital Subscriber Lines
ADT	Asynchronous Data Transfer - Transmission technique used in ISDN PBXs to allocate bandwidth
AF	Audio Frequency
AFC	Automatic Frequency Control
AFDEC	Association of Franchised Distributors of Electronic Components
AFE	Apple File Exchange
AFM	Atomic Force Microscopy
AFP	Appletalk Filing Protocol
AGC	Automatic Gain Control
AGP	Accelerated Graphics Port
AGP	Advanced Graphics Port
AI	Artificial Intelligence
AIM	Apple/IBM/Motorola
AIX	Advanced Interactive eXecutive
ALC	Automatic Level Control
ALU	Arithmetic Logic Unit
AM	Amplitude Modulation; also Active Matrix.
AMD	Advanced Micro Devices
AMA	American Electronics Association
AMI	American Megatrends Inc
AMPS	Analogue Mobile Phone system
A/N	Alphanumeric
ANA	Article Numbering Association
ANDF	Architecture Neutral Distributed Format
ANI	Automatic Number Identification
ANR	Active Noise Reduction
ANSI	American National Standards Institute
AOL	America Online
APA	All Points Addressable
APC	Automatic Phase Control
API	Application Programming Interface
APM	Advanced Power Management
APPC	Advanced Program - to - Program Communications - IBM protocol analogous to OSI model's session layer
APPN	Advanced Peer - to - Peer Networking
APT	Automatic Programmed Tools
ARC	Advanced RISC Computing
ARCHIE	ARCHIvE
ARCNET	Attached Resource Computer NETwork
ARDIS	Advanced National Radio Data Service
ARP	Address Resolution Protocol
ARPANET	Advanced Research Projects Agency Network
ARQ	Automatic ReQuest for repeat
ASA	American Standards Association
ASCII	American Standard Code for Information Interchange
ASIC	Application Specific Integrated Circuit
ASK	Amplitude Shift Keying
ASP	Analogue signal processor
ASPI	Advanced SCSI Programming Interface
ASSP	Application Specific Standard Part
ASRP	Application Specific RISC Processor
AT	Advanced Technology
ATDM	Asynchronous Time Division Multiplexing
ATE	Automatic Test Equipment
ATG	Automatic Test Generation
ATM	Asynchronous Transfer Mode
ATRAC	Adaptive Transform Acoustic Coding
ATS	Application Technology Satellite
AUI	Attachment Unit Interface
AUTODIN	AUTOmatic DIgital Network
AUX	AUXiliary
AV	Audio/Visual
AVC	Automatic Volume Control
AVC	Audio Visual Connection
AVI	Audio Video Interleaved
AVK	Audio Video Kernel
AVSS	Audio / Video Subsystem - Part of DVI standard
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BASIC	Beginners All - purpose Symbolic Instruction Code
BBC	British Broadcasting Corporation
BBD	Bucket Brigade Device
BBS	Bulletin Board System
BCC	Bump Chip Carrier
BCC	Block Check Character
BCD	Binary Coded Decimal
BCI	BroadCast Interference
BCPA	British Copyright Protection Association
BCS	British Computer Society
BCS	Basic Control System
BDM	Background Debug Mode
BDOS	Basic Disk Operating System
BE	Back End
BEDO	Burst Extended Data Out
BEM	Boundary Element Method
BER	Bit Error Rate
BEV	Billion Electron Volts
BFT	Binary File Transfer
BGA	Ball Grid Array
BIB	British Interactive Broadcasting
BICMOS	Bipolar Complementary Metal Oxide Semiconductor
BIFET	BIpolar Field-Effect Transistor
BIMOS	Bipolar Metal Oxide Semiconductor
BIOS	Basic Input / Output System
BISDN	Broadband Integrated Services Digital Network
BIST	Built In Self Test
BITE	Built In Test Equipment
BJT	Bipolar junction transistor
BLT	Boundary Block Transfer
BMMG	British Microcomputer Manufacturers Group
BNC	Bayonet Nut Connector
BNC	Baby N Connector
BNF	Backus Naur Form
BPI	Bits Per Inch
BPS	Bits Per Second
Bytes/s	Bytes Per Second
BSA	Business Software Alliance
BSC	Binary Synchronous Communications
BSD	Berkeley Standard Distribution
BSE	Broadcast Satellite Experiment
BSI	British Standards Institution
BSRAM	Burst SRAM
BT	British Telecom
BTAM	Basic Terminal Access Method
BTB	Branch Target Buffer
BTU	British Thermal Units
BW	BandWidth
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CAB	Configurable Analogue Blocks
CAD	Computer Aided Design
CAE	Computer Aided Engineering
CAE	Computer Aided Education
CAE	Computer Assisted Education
CAI	Computer Aided Instruction
CAI	Common air Interface
CAM	Computer Aided Manufacturing
CAM	Content Addressable Memory
CAMU	Communications Audio Management Unit
CAN	Controller Area Network
CAS	Column - Address Strobe - Logic signal
CASE	Computer Assisted Software Engineering
CAT	Computerised Axial Tomography
CATV	Cable Television
CB	Citizens' Band
CB	Customer Box
CBA	Cell Based Array
CBI	Complementary Binary
CBIC	Cell Based Integrated Circuit
CBR	Continuous Bit Rate traffic - High priority level in ATM networking
C & C	Communication & Control
C & C	Command & Control
CC	Constant Current
CCD	Charge Coupled Device
CCFP	Common Control Fixed Part
CCIR	Committee Consultation International Radiocommunications
CCIS	Command and Control Information Systems
CCITT	Consultative Committee of International Telephony and Telegraphy
CCS	Communications Control System
CCTV	Closed Circuit TeleVision
CCU	Communications Control Unit
CD	Compact Disc
CDC	Control Data Corporation
CDDI	Copper Distributed Data Interface
CD - I	Compact Disc Interactive
CDMA	Code Division Multiple Access
CDPD	Cellular Digital Packet Data
CDR	Compact Disc Recordable
CDRAM	Cached DRAM ( see EDRAM )
CD - ROM	Compact Disk Read Only Memory
CD - ROM XA	CD - ROM eXtended Architecture
CDV	Compact Disc Video
CDWORM	Compact Disc Write - Once / Read - Many
CE	Communaute Europe
CECL	Cascade Emitter - Coupled Logic
CEMF	Counter ElectroMotive Force
CENELEC	European Committee for Electrotechnical Standardisation
CerDIP	Ceramic Dual Inline Package
CERN	Conseil European pour la Recherche Nucleaire
CES	Consumer Electronics Show
CF	Centre Frequency
CFB	Current FeedBack
CFD	Computational Fluid Dynamics
CFI	CAD Framework Initiative
CGA	Colour Graphics Adapter
CGI	Computer Graphics Interface
CGM	Computer Graphics Metafile
CHBW	CHannel BandWidth
CHKDSK	CHecK DiSK
CI	Common Interface
CIF	Common Intermediate Format
CIME	Computer Integrated Manufacturing and Engineering
CIRC	Cross - Interleaved Reed - solomon Code
CISC	Complex Instruction Set Computer
CISPR	International Special Committee on Radio Interference
CL	Current Loop
CLA	Carry Lookahead Adder
CLRC	Central Laboratory of the Research Councils
CLS	Clear Screen
CLV	Constant Linear Velocity
CMC	Common Mail Calls
CMIP	Common Management Information Protocols
CMIS	Common Management Information Services
CMOS	Complementary Metal Oxide Semiconductor
CMRS	Commercial Mobile Radio Service
CMYK	Cyan - Magenta - Yellow - blacK
CNC	Computerised Numerical Control
COBALT	COncurrent Broadcast Array Logic Technology
COBOL	COmmon Business Oriented Language
COBRA	Coastal Battlefield Reconnaissance and Analysis system
CODEC	COder - DECoder
COFDM	Coded Orthogonal Frequency Division Multiplex
COG	Chip On Glass
COMSAT	COMmunication SATellite corporation
COMTEC	COmputer Micrographics and TEChnology
COSE	Common Open Software Environment
COTS	Commercial Off The Shelf
CPD	Continuing Professional Development
CPE	Customer Premises Equipment
CPI	Characters Per Inch
CPLD	Complex Programmable Logic Device
CP/M	Control Program for Microcomputers
CPS	Characters Per Second
CPU	Central Processing Unit
CQFP	Ceramic Quad-FlatPack
CRC	Cyclical Redundancy Check - Error detection scheme
CRT	Cathode Ray Tube
CS	Control Strobe - Logic signal
CSA	Canadian Standards Association - UL's Canadian counterpart
CSMA	Carrier Sense Multiple Access
CSMA/CD	Carrier Sense Multiple - Access with Collision Detect
CTA	Cordless Terminal Adapter
CTC	Counter / Timer Circuit
CTI	Computer Telephony Integration
CTM	Cordless Terminal Mobility
CTS	Clear To Send - Protocol signal
CV	Constant Voltage
CVD	Chemical Vapour Deposition
CW	Carrier Wave
CW	Continuous Waves
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D/A	Digital to Analogue
DAA	Data Access Arrangement
DAA	Decimal Adjust Accumulator
DAA	Direct Access Arrangement
DAB	Digital Audio Broadcasting
DAC	Digital to Analogue Converter
DAC	Data Acquisition and Control
DAL	Data Access Lines
DAM	DECT Authentication Module
D - AMPS	Digital Analogue Mobile Phone system
DAQ	Data AcQuisition
DARPA	Defense Advanced Research Projects Agency
DASD	Direct Access Storage Device
DAT	Digital Audio Tape
DAV	Data AVailable / DatA Valid - Logic signal
DAVID	Digital Audio Video Interactive Decoder
dB	DeciBel
dBA	DeciBels Adjusted
DBA	Data Base Administrator
DBAM	DataBase Access Method
DBI	DataBase Index
dBK	DeciBels - referred to 1 Kilowatt
dBM	DeciBels - above or below 1 milliwatt
DBMS	Data Base Management System
DBOS	Disk - Based Operating System
DBR	Dos Boot Record
dBV	DeciBels - Voltage
dBX	DeciBels - above reference coupling
DC	Direct Current
DC	Data Conversion
DCC	Digital Compact Cassette
DCC	Direct Cable Connection
DCD	Data Carrier Detect - Protocol signal
DCE	Data Circuit-terminating Equipment
DCE	Data Communications Equipment
DCE	Distributed Computing Environment
DCI	Display Control Interface
DCOM	Distributed Common Object Model
DCP	Display Control Program
DCR	Data Conversion Receiver
DCR	Digital Conversion Receiver
DCS	Distributed Control System
DCS	Data Carrier System
DCT	Discrete Cosine Transform
DCTL	Direct Coupled Transistor Logic
DD	Double Density
DDA	Digital Differential Analyser
DDC	Digital Display Channel
DDC	Direct Digital Control
DDC	Display Data Channel
DDC	Digital Down Converter
DDCE	Digital Data Conversion Equipment
DDCMP	Digital Data Communications Message Protocol
DDD	Direct Distance Dialling
DDE	Dynamic Data Exchange
DDL	Data Definition Language
DEA	Data Encryption Algorithm
DEC	Digital Equipment Corporation
DECT	Digital Enhanced Cordless Telecommunications
DERA	Defence Evaluation Research Agency
DES	Data Encryption Standard
DES	Digital Encryption Standard
DF	Direction Finder
DFD	Data Flow Diagram
DFM	Design For Manufacture
DFT	Design For Test
DIB	Data Input Bus
DID	Direct Inward Dialling
DIGICOM	DIGItal COMmunications system
DIL	Dual In Line
DIMM	Dual Inline Memory Module
DIN	Deutsche Industrie Normenausschuss
DIP	Dual In line Package
DIS	Draft International Standard
DISOSS	DIStributed Office Supported System
DIY	Do It Yourself
DLC	Dual Layer Capacitor
DLL	Dynamic Link Library
DLS	Digital Subscriber Lines
DMA	Direct Memory Access
DMASS	Distributors and Manufacturers Association of Semiconductor Specialists
DMF	Distribution Media Format
DML	Data Manipulation Language
DMM	Digital MultiMeter
DMOS	Double-diffused Metal Oxide Semiconductor
DMT	Discrete Multitone modulationTransceiver
DMX	Digital Media Extension
DNA	DEC Network Architecture
DNC	Direct Numerical Control
DNS	Domain Name Server
DoD	Department of Defense - US defence department
DoI	Department of Industry
DOR	Digital Optical Recording
DOS	Disk Operating System
DOT	Digital Online Terminal
DoT	Department of Transport
DP	Data Processing
DPCM	Differential Pulse Code Modulation
DPDT	Dual Pole Dual Throw
DPE	Data Parity Error
DPI	Dots Per Inch
DPMA	Data Processing Management Association
DPP	Distributed Parallel Processing
DPS	Data Processing System
DPSK	Differential Phase Shift Keying
DPSRAM	Dual Port SRAM
DPST	Dual Pole Single Throw
DRAM	Dynamic Random Access Memory
DRAW	Direct Read After Write
DRDA	Distributed Relational Database Architecture
DS	Double Sided
DS	Data Strobe - Logic signal
DSA	Distributed Systems Architecture
DSA	Data Set Adapter
DSA	Digital Signal Algorithm
DSO	Digital Storage Oscilloscope
DSP	Digital Signal Processor ( or Processing )
DSR	Data Set Ready
DSS	Decision Support System
DSS	Digital Spread Spectrum
DSS	Decision Support System
DSS	Digital Signature Standard
DST	Dynamic Stress Testing
DS3	Digital Signal level 3. A North American digital hierarchy signalling standard for transmission at 44.736Mbit / s
DTC	Data Terminal Controller
DTE	Data Terminating Equipment
DTI	Department of Trade & Industry
DTL	Diode Transistor Logic - Predecessor of TTL
DTMF	Dual - Tone MultiFrequency - Standard for touch tones telephones
DTP	Desk Top Publishing
DTR	Data Terminal Ready - Protocol signal
DTS	Distributed Time Services
DTV	Digital TV
DUT	Device Under Test
DUV	Data Under Voice
DVB	Digital Video Broadcasting
DVBIRD	Digital Video Broadcasting Integrated Receiver / Decoder
DVD	Digital Video Disc
DVI	Digital Video Interactive
DVM	Digital VoltMeter
DVT	Design Verification Testing
DWMT	Discrete wavelet multitone
DWT	Discrete wavelet transform or Discrete wavelet tone
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E1	A digital transmission link with a capacity of 2.048Mbit / s
E3	A digital transmission link with a capacity of 34.368Mbit / s
EAB	Embedded Array Block
EAN	European Article Numbering
EAPROM	Electrically Alterable Programmable Read - Only Memory
EAROM	Electrically Alterable Read - Only Memory
EBCDIC	Extended Binary Coded Decimal Interchange Code
EBR	Electron Beam Recording
EBU	European Broadcasting Union
ECC	Emitter Coupled Circuits
ECC	Error Checking and Correction
ECC	Error Correction Code
ECCM	Electronic Counter Counter Measures
ECHO	European Commission Host Organisation
ECL	Emitter Coupled Logic
ECM	Electronic Counter Measures
ECMA	European Computer Manufacturers Association
ECO	Electron Coupled Oscillator
EDA	Electronic Design Automation
EDC	Error Detection Code
EDE	Embedded Development Environment
EDI	Electronic Data Interchange
EDIF	Electronic Data Interchange Format
EDO	Extended Data Out
EDP	Electronic Data Processing
EDPM	Electronic Data Processing Machine
EDPS	Electronic Data Processing System
EDRAM	Enhanced Dynamic Random Access Memory
EDS	Electronic Data Systems
EEPROM	Electrically Erasable Programmable Read Only Memory
E²PROM	Electrically Erasable Programmable Read Only Memory
EEROM	Electrically Erasable Read Only Memory
EFT	Electronic Funds Transfer
EGA	Enhanced Graphics Adapter
EIA	Electronics Industries Association
EIDE	Enhanced Integrated Device Electronic
EISA	Enhanced ( or Extended ) Industry Standard Architecture
EL	ElectroLuminescent
ELF	Extremely Low Frequency
EMC	ElectroMagnetic Compatibility
EMCTLA	EMC Test Laboratory Association
EMF	ElectroMotive Force
EMF	Enhanced MetaFile
EMI	ElectroMagnetic Interference
EMM	Expanded Memory Manager
EMP	ElectroMagnetic Pulse
EMS	Expanded Memory Specification
EMV	Europay, Mastercard, Visa
ENIAC	Electronic Numerical Integrator And Calculator
ENOB	Effective Number Of Bits
EOB	End Of Block
EOF	End Of File
EOL	End Of Line
EOM	End Of Message
EOR	End Of Record
EOR	Exclusive OR
EOT	End Of Transmission
EPAC	Electrically Programmable Analogue Circuit
EPLD	Electrically Programmable Logic Device
EPOS	Electronic Point of Sale
EPP	Enhanced Parallel Port
EPROM	Erasable Programmable Read - Only Memory
EPSMA	European Power Supply Manufacturers Association
EPSRC	Engineering and Physical Sciences Research Council
EQ	EQualiser
ESA	European Space Agency
ESC	EScape Character
ESD	ElectroStatic Discharge
ESD	Electrostatic Sensitive Device
ESDA	Electronic System Design Automation
ESDI	Enhanced Small Devices Interface
ESMR	Enhanced Specialised Mobile Radio
ESR	Equivalent Series Resistance
ETACS	European Total Access Communications System
ETB	End of Transmission Block
ETL	Enhanced Ttransceiver Logic
ETS	European Telecommunications Standard
ETSI	European Telecommunications Standards Institute
EU	European Union
EUT	Equipment Under Test
eV	Electron Volt
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FAA	Federal Aviation Administration
FAT	File Allocation Table
FAX	FACSimile
FCC	Federal Communications Commission
FCFS	First Come-First Served
FCIC	Full Custom Integrated Circuit
FCT	Fast CMOS Technology
FD	Full Duplex
FDC	Floppy Disk Controller
FDD	Floppy Disk Drive
FDDI	Fibre Distributed Data Interface
FDI	Flash Data Integrator
FDM	Frequency Division Multiplexing
FDMA	Frequency Division Multiple Access
FDOS	Floppy Disk Operating System
FDOS	Floppy Disk Operating System
FDX	Full - Duplex Transmission
FEA	Finite Element Analysis
FED	Field Emission Display
FEI	Federation of the Electronics Industry
FET	Field Effect Transistor
FF	Fieldbus Foundation
FF	Flip Flop
FFT	Fast Fourier Transform
FHD	Fixed Head Disk
FHMA	Frequency Hopping Multiple Access
FIFO	First - In First - Out
FILO	First - In Last - Out
FINTEL	FINancial Times ELectronic
FIR	Finite Impulse Response filter
FLIR	Forward Looking InfraRed
FM	Frequency Modulation
FMV	Full Motion Video
FORTH	FOuRTH - generation language
FORTRAN	FORmula TRANslation
FP	Floating Point
FPGA	Field Programmable Gate Array
FPLA	Field Programmable Logic Array
FPM	Fast Page Mode
FPS	Frames per second
FPU	Floating Point Unit
FRU	Field - Replaceable Unit
FSF	Free Software Foundation
FSK	Frequency Shift Keying
FSM	Frequency Shift Modulation
FSTN	Film Super Twisted Nematic
FT	Fixed Termination
FTAM	File Transfer Access and Management
FTP	File Transfer Protocol
FVC	Frequency to Voltage Converter
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GB	GigaByte
GA	Gate Array
GAL	Generic Array Logic
GaAs	Gallium Arsenide
GaAlAs	Gallium Aluminium Arsenide
GAP	Generic Access Profile
GCS	Gate Controller Switch
GDI	Graphics Device Interface
GDS	Global Directory Services
GDT	Graphic Display Terminal
GFCI	Ground Fault Circuit Interrupter
GFI	Ground Fault Interrupter
GFLOPS	Giga - 10⁹ FLOating Point Operations Per Second
GFSK	Gaussian Frequency Shift Keying
GHz	Gigahertz
GIGO	Garbage In Garbage Out
GIRL	Generalised Information Retrieval Language
gif	Graphics Interchange Format
GIS	Geographic Information System
GKS	Graphics Kernel System
GLB	Generic Logic Block
GMM	Graphical MultiMeter
GMR	Giant Magneto Resistance
GND	GrouND
GNU	Gnu's Not UNIX
GPF	General Protection Fault
GPIB	General Purpose Interface Bus
GPS	Global Positioning System
GRP	Global Routing Pool
GSI	Graphic Structure Input
GSM	Global System for Mobile communications
GTL	Gunning Transceiver Logic
GUI	Graphical User Interface
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HAL	Hardwired Array Logic
HART	Highway Addressable Remote Transducer
HCMOS	High - density Complementary Metal - Oxide Semiconductor
HD	Hard Disk
HDB	Home Data Base
HDC	Hard Disk Controller
HDD	Hard Disk Drive
HDD	Head Down Display
HDL	Hardware Description Language
HDLC	High Level Data Link Control
HDSL	High speed Digital Subscriber Lines
HDTV	High Definition TeleVision
HDX	Half Duplex
HEMT	High Electron Mobility Transistor
HER	High Efficiency Red - As in an LED
HET	Heterodyne
HEU	Headset electronic Unit
HF	High Frequency
HFS	Hierarchical File System
HIC	Hybrid Integrated Circuit
HI - FI	HIgh FIdelity
HIPO	Hierarchy Input, Process, Output
HISAM	Hierarchical Indexed Sequential Access Method
HLL	High Level Language
HLS	Hue Luminance Saturation
HMA	High Memory Area
HMD	Helmet Mounted Display
HMOS	High - density Metal Oxide Semiconductor
HOOD	Hierarchical Object Oriented Design
HP	Hewlett Packard
HPIB	Hewlett Packard Interface Bus - Identical to GPIB
HPIL	Hewlett Packard Interface Loop
HPC	Handheld PC
HPFS	High Performance File System
HPGL	Hewlett Packard Graphics Language
HS	Helical Scan
HSM	High-Speed Memory
HSSI	High Speed Serial Interface
HSV	Hue - Saturation - Value
HTL	High Threshold Logic
HTML	HyperText Markup Language
HTS	Helmet Tracking System
HTTP	HyperText Transfer Protocol
HUD	Head Up Display
HVDC	High Voltage Direct Current
HVPS	High Voltage Power Supply
Hz	Hertz - Cycles per second
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I²C	Integrated InterConnect
I²ICE	Integrated Instrumentation and InCircuit Emulation
I²L	Integrated Injection Logic
IA	Instrumentation Amplifier
IBM	International Business Machines
IC	Integrated Circuit
ICE	In - Circuit Emulator ( or Emulation )
ICL	International Computers Ltd
IDC	International Data Corporation
IDCT	Inverse Discrete Cosine Transform
IDE	Integrated Device Electronics or Intelligent Drive Electronics
IDE	Integrated Development Environment; also Integrated Drive Electronics
IDVC	Integrated Data / Voice Channel
IEE	Institute of Electrical Engineers
IEEE	Institute of Electrical and Electronics Engineers
IEEIE	Institute of Electronics and Electrical Incorporated Engineers
IETF	Internet Engineering Task Force
IF	Intermediate Frequency
IGBT	Insulated Gate Bipolar Transistor
IGES	Initial Graphics Exchange Standard
IGFET	Insulated Gate Field Effect Transistor
IIE	Institute of Industrial Engineers
IIL	Integrated Injection Logic
IIR	Infinite Impulse Response filter
ILD	Injection Laser Diode
IMECHIE	Institute of MECHanical Incorporated Engineers
InP	Indium Phosphide
INTELSAT	INternational TELecommunications SATellite consortium
I/O	Input / Output
IP	Internet Protocol - see TCP / IP
IP	Intellectual Property
IPC	Interprocess Communication Services
IPGA	Inverted Pin Grid Array
IPSEC	Internet Protocol SECurity
IPUI	International Portable User Identity
IPX	Internetwork Protocol Exchange
IR	InfraRed
IRAS	InfraRed Astronomical Satellite [ Space ]
IRD	Integrated Receiver / Decoder
IRDA	InfraRed Data Association
IRED	InfraRed Emitting Diode
IRQ	Interrupt ReQuest
IRTF	Internet Research Task Force
ISA	Industry Standard Architecture
ISA	Instrument Society of America
ISAM	Indexed Sequential Access Method
ISDN	Integrated Services Digital Network
ISN	Information Systems Network
ISO	International Standards Organisation
ISP	Internet Service Provider
ISP	In System Programmable
ISPBX	Integrated Systems PBX
ISV	Independent Software Vendor
IT	Information Technology
ITAC	ISDN Terminal Adapter Circuit
ITC	InterTool Communications
ITT	International Telephone and Telegraph
ITU	International Telecommunications Union
IVD	Integrated Voice Data
IVTS	International Video Teleconferencing Service
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JBC	Java Byte Code
JBEM	Joint Board for Engineering Management
JCL	Job Control Language
JEDEC	Joint Electronic Device Engineering Council
JEIDA	Japanese Electronic Industry Development Association
JFET	Junction Field Effect Transistor
JIS	Japanese Industrial Standard
JIT	Just-In-Time
JPEG	Joint Photographic Experts Group
JPL	Jet Propulsion Laboratory
JTAG	Joint Test Action Group
JUG	Joint Users Group
JVM	Java Virtual Machine
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K	Kelvin
K	Kilo - 10³
KA	KiloAmpere -1000A
KB	Kilobits
KBPS	KiloBits Per Second
KBytes	Kilobytes
KeV	Kilo Electron Volts
KHz	KiloHertz
KVA	Kilo Volt Amps
KW	Kilowatt
KWH	Kilowatthour
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L²FET	Logic Level Field Effect Transistor
LAN	Local Area Network
LASCR	Light Activated Silicon Controlled Rectifier
LASER	Light Amplification by Stimulated Emission of Radiation
LBA	Linear Block Array
LC	Inductance and Capacitance
LCD	Liquid Crystal Display
LCM	Least / Lowest Common Multiple
LD	Line Driver
LDMOS	Lateral Double diffused Metal Oxide Semiconductor
LDO	Low DropOut
LE	Local Exchange
LEC	Local Exchange Carrier
LED	Light Emitting Diode
LEP	Light Emitting Polymer
LF	Line Feed
LF	Low Frequency
LFO	Low Frequency Oscillator
LIFO	Last-In First-Out
LIM	Lotus-Intel-Microsoft
LIPS	Logical Inferences Per Second
LISN	Line Interference Stabilisation Network
LISP	LISt Processing - Programming language
LLC	Logical Link Control - Layer of OSI standard
LMDS	Local Multipoint ( or Microwave ) Distribution Service ( or System )
LO	Local Oscillator
LON	Local Operating Network
LORAN	LOng RAnge Navigation
LP	Low Pass
LPC	Linear Predictive Coding
LPGA	Laser Programmable Gate Array
LQ	Letter Quality
LRC	Longitudinal Redundancy Check
LSB	Least Significant Byte
LSb	Least Significant Bit
LSD	Least Significant Digit
LSI	Large Scale Integration
LUT	Look Up Table
LV	Low Voltage
LVD	Low Voltage Directive
LVDS	Low Voltage Differential Signalling
LVPSU	Low Voltage PSU
LW	Long Wave
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M	Mega - 10⁶
MAC	Multiplexed Analogue Components
MAC	Media Access Control - Sub layer of OSI standard
MAC	Multiplier - ACcumulator
MAN	Metropolitan Area Network
MAP	Microprocessor Application Project
MAP	Manufacturing Automation Protocol
MAPI	Messaging Application Programming Interface
MASER	Microwave Amplification by Stimulated Emission of Radiation
MAT	Machine Aided Translation
Mb	Megabit
MB	Megabyte
MbPS	Megabits Per Second
MBPS	Megabytes Per Second
MBR	Master Boot Record
MCA	Micro Channel Architecture
MCGA	Multi - Colour Graphics Array
MCI	Media Control Interface
MCLED	Micro Cavity LED
MCM	MultiChip Module
MCU	MicroComputer Unit
MDA	Mechanical Design Automation
MDA	Monochrome Display Adapter
MDAC	Multiplying Digital to Analogue Converter
MDI	Multiple Document Interface
MDS	Multipoint Distribution System
MESFET	Metal Semiconductor Field Effect Transistor
MFLOPS	Mega FLOating Point Operations per Second
MFM	Modified Frequency Modulation
MGA	Masked Gate Array
MHS	Message Handling Systems
MHz	Megahertz
MIB	Microelectronics In Business
MICR	Magnetic Ink Character Recognition
MICRON	Millionth of a metre ( 10^-6 )
MIDAS	Multimade International Data Acquisition Service
MIDI	Musical Instrument Data Interface
MIL	MILitary
MIMD	Multiple - Instruction Multiple - Data
MIME	Multipurpose Internet Mail Extensions
MIPS	Million Instructions per Second
MIRS	Motorola Integrated Radio system
MIS	Management Information System
MISD	Multiple - Instruction Single Data
ML	MultiLayer
MLB	MultiLayer Board
MMI	Man Machine Interface
MMU	Memory Management Unit
MMX	MultiMedia eXtensions
MNP	Microcom Network Protocol
MO	Magneto Optical
MO	Master Oscillator
MODEM	MOdulator / DEModulator
MOPS	Millions of Operations Per Second
MOS	Metal Oxide Semiconductor
MOSFET	Metal Oxide Semiconductor Field Effect Transistor
MOV	Metal Oxide Varistor
MP	MultiProcessor
MPC	Multimedia Personal Computer
MPEG	Motion Picture Experts Group
MPP	Massively Parallel Processor
MPS	Micro Port Saver
MPSK	Minimum Phase Shift Keying
MPU	MicroProcessor Unit
MQFP	Metal Quad Flat Pack
MR	Magnetic Resonance
MRP	Manufacturing Resource Planning
MSB	Most Significant Byte
MSb	Most Significant bit
MSC	Mobile Services Switching Centre
MSD	Most Significant Digit
MS - DOS	MicroSoft Disk Operating System
MSI	Medium Scale Integration
MSN	MicroSoft Network
MTA	Message Transfer Agent
MTBF	Mean Time Between Failures
MTBM	Mean Time Between Maintenance
MTF	Modulation Transfer Function
MTS	Message Transfer System
MTTF	Mean Time To Failure
MTTR	Mean Time To Recovery
MTTR	Mean Time To Repair
MUMPS	MUltiplex MicroProcessor System
MUX	Multiplexer
MVDS	Multipoint Video Distribution System
MVS	Multiple Virtual Storage
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NAM	Network Access Machine
NAMAS	National Accreditation of Measurement And Sampling
N - AMPS	Narrowband Analogue Mobile Phone system
NAND	Not AND
NASA	National Aeronautics and Space Administration
NBS	National Bureau of Standards
NC	Network Computer
NC	Numerical Control
NC	Not Connected
NC	Normally Closed
NCR	National Cash Registers
NCSC	National Computer Security Center - Arm of the US National Security
NDR	Network Data Representation
NEC	Nippon Electric Corporation
NEDA	National Electronics Distributors Association
NEMA	National Electrical Manufacturers Association
NEMI	National Electronics Manufacturing Initiative
NEST	Novell Embedded Systems Technology
NetBIOS	Network Basic Input/Output System
NF	NanoFarad - measure of capacitance
NFM	Network File Manager
NFS	Network File Server
NFS	Network File System
NFU	Not Frequently Used
NIC	Network Information Centre
NiCad	Nickel Cadmium - Rechargeable battery
NiMH	Nickel Metal Hydride
NISRC	Northern Ireland Semiconductor Research Centre
NLQ	Near Letter Quality
NMH	Nickel Metal Hydride
NMI	National Microelectronics Institute
NMI	Non - Maskable Interrupt
NMOS	Negative - channel Metal - Oxide Semiconductor
NMR	Nuclear Magnetic Resonance
NMS	Network management system
NMT	Nordic Mobile Telephone
NN	Neural Network
NO	Normally Open
NO - OP	NO - OPeration instruction
NOP	No OPeration
NOR	Not OR
NORAD	NORth American Defense
NOS	Network Operating System
NPL	National Physical Laboratory
NPN	Negative Positive Negative
NRE	Non Recurring Engineering
NRFM	Non-volatile Ram File Manager
NRU	Not-Recently Used
NRZ	Non Return to Zero
NRZI	Non Return to Zero Invert
NSA	National Security Agency
NSF	National Science Foundation
NSP	Native Signal Processing
NTACS	Nippon Total Access Communications System
NTC	Negative Temperature Coefficient
NTFS	New Technology File System
NTSC	National Television Standards Committee
NTT	Nippon Telephone & Telegraph
NUMA	Non Uniform Memory Access
NUI	Network User Identification
NVG	Night Vision Goggle
NVRAM	NonVolatile Random Access Memory
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OA & M	Operations, Administration and Maintenance
OC	Open Collector
OC	Optical Carrier. A range of standards applying to optical communications. For example. OC - 1 51.84Mbit / s
OCR	Optical Character Recognition
OCXO	Oven Controlled Crystal Oscillator
ODBC	open database connectivity
ODI	Open Datalink Interface
OEM	Original Equipment Manufacturer
OFDM	Orthogonal Frequency Division Modulation
OFS	Open File System
OLE	Object Linking and Embedding
OLRT	On - Line Real - Time
OLTP	OnLine Transaction Processing
OMG	Object Management Group
OOP	Object Oriented Programming
OPAMP	OPerational AMPlifier op amp
OPC	Organic Photo Conductor
OPR	Optical Pattern Recognition
OR	Operational Research
ORACLE	Optional Reception of Announcements by Coded Line Electronics
ORBIT	On - line Real - time Branch InformaTion
ORP	Output Routing Pool
OS	Operating System
OSCAR	Orbiting Satellite Carrying Amateur Radio
OSD	On Screen Display
OSD	Optical Scanning Device
OSF	Open Software Foundation
OSI	Open Systems Interconnection
OTDR	Optical Time Domain Reflectometry
OTP	One Time Programmable
OUP	Output Routing Pool
OUP	Oxford University Press
OVP	Over Voltage Protection
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PA	Public Address
PA	Power Amplifier
PABX	Private Automated Branch Exchanges
PAD	Packet Assembler / Disassembler
PAL	Phase Alternate Line TV standard used in UK and many other countries
PAL	Programmable Array Logic
PAM	Pulse Amplitude Modulation
PANDA	Prestel Advanced Network Design Architecture
PASCAL	Program Applique la Selection et la Complication Automatique de la Litterature
PAX	Private Automatic Exchange
PB	Push Button
PBX	Private Branch eXchange
PC	Personal Computer
PC	Program Counter
PCB	Printed Circuit Board
PCC	Plastic Chip Carrier
PCD	Photo Compact Disc
PCI	Peripheral Component Interconnect ( or Interface )
PCIF	Printed Circuit Interconnect Federation
PCL	Play Control List
PCL	Printer Control Language Drives Hewlett - Packard printers
PCM	Pulse Code Modulation
PCM	Plug Compatible Manufacturer
PCMCIA	Personal Computer Memory Card International Association
PDA	Personal Digital Assistant
PDIP	Plastic Dual Inline Package
PDM	Pulse Duration Modulation
PDU	Professional Development Unit
PE	Processor Element
PEC	PhotoElectric Cell
PEEL	programmable Electrically Erasable Logic
PEROM	Programmable and Erasable Read Only Memory
PERT	Program Evaluation and Review Technique
PF	Pulse Frequency
PF	Power Factor
PFC	Power Factor Correction
PFF	Page Fault Frequency
PFM	Pulse Frequency Modulation
PG	Power Gain
PGA	Pin Grid Array
PGA	Professional Graphics Adapter
PGP	Pretty Good Privacy
PH	Page Heading
PIA	Peripheral Interface Adapter
PIC	Peripheral Interface Controller
PICS	Platform for Internet Contents Specification
PIF	Program Information File
PIM	Personal Information Manager
PIN	Personal Identification Number
PIO	Processor Input / Output
PIO	Programmed Input / Output
PIV	Peak Inverse Voltage
PIXEL	PICTure ELement
PLA	Programmable Logic Array
PLC	Programmable Logic Controller
PLCC	Plastic Leaded Chip Carrier
PLD	Programmable Logic Device
PLL	Phase Locked Loop
PLUGE	Picture Line Up GEnerator
PLV	Production Level Video
PM	Phase Modulation
PM	Pulse Modulation
PM	Preventive Maintenance
PMBX	Private Manual Branch eXchange
PMCM	Power MultiChip Module
PMLCD	Passive Matrix LCD
PMOS	Positive - channel Metal - Oxide Semiconductor
PMR	Private Mobile Radio
PMT	Photo Multiplier Tube
PN	Positive Negative
PNG	Portable Network Graphics
PnP	Plug aNd Play
PNP	Positive Negative Positive
POD	Power - On Diagnostics
POP	Point Of Presence
POS	Programmable Option Select
POS	Point Of Sale
POSIX	Portable Operating System Interface for Unix
POST	Power-On Self Test
POTS	Plain Old Telephone Service
POV	Peak Operating Voltage
PPI	Pixels Per Inch
PPM	Parts Per Million
PPP	Point - to - Point Protocol
PPS	Pulses Per Second
PPTP	Point - to - Point Tunnelling Protocol
PQFP	Plastic Quad - FlatPack
PRN	Pseudo Random Noise
PROM	Programmable Read - Only Memory
PSDN	Packet Switched Data Network
PSG	Programmable Sound Generator
PSI	Pounds per Square Inch
PSK	Phase Shift Keying
PSTN	Public Switched Telephone Network
PSU	Power Supply Unit
PSW	Program Status Word
PTE	Page Table Entry
PTM	Pulse Time Modulation
PTP	Peer To Peer
PTT	Postal, Telegraph & Telephone
PUT	Programmable Unijunction Transistor
PV	PhotoVoltaic
PVT	Page View Terminal
PWM	Pulse Width Modulation
PWR	PoWeR
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QA	Quality Assurance
QADC	Queued Analogue to Digital Converter
QAM	Quadrature Amplitude Modulation or Modulator
QAM	Queued Access Method
QBE	Query by example
QC	Quality Control
QCIF	Quarter Common Intermediate Format
QFP	Quad Flat Pack
QIC	Quarter Inch Cartridge
QIP	Quad Inline Package
QOS	Quality Of Service
QPSK	Quadrature Phase Shift Keying
QRC	Quick Release Connector
QSM	Quad Surface Mount
QSM	Queued Serial Module
QSAM	Queued Sequential Access Method
QTAM	Queued Telecommunications Access Method
QTC	Quantum Tunnelling Composites
QWERTY	First 6 letter keys of keyboard
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R &D	Research and Development
RACE	Research on Advanced Communication for Europe
RAD	Rapid Access Disk
RAD	Radiation Absorbed Dose
RADAR	RAdio Detection And Ranging
RADLS	Rate Adaptive Digital Subscriber Lines
RAID	Redundant Arrays of Inexpensive Disks
RAM	Random Access Memory
RAMDAC	Random Access Memory Digital to Analogue Converter
RAS	Remote Access Server ( or Services )
RAS	Row Address Strobe
RBFM	Random Block File Manager
RBOC	Regional Bell Operating Companies
RBW	Resolution BandWidth
RC	Radio Control
RC	Remote Control
RC	Resistance and Capacitance
RCA	Radio Corporation of America
RCC	Routing Control Centre
RCTL	Resistor Capacitor Transistor Logic
RCV	ReCeiVe
RD	Receive Data
RD	ReaD - Logic signal
RDS	Radio Data Signal
RDY	ReaDY
REP	Resolution Enhancement Procedure
RET	RETurn
RF	Radio Frequency
RFI	Radio Frequency Interference
RFP	Radio Fixed Part
RFS	Remote File Service
RGB	Red Green Blue
RHDP	Right Hand Decimal Point
RI	Ring Indicator
RIFF	Resource Interchange File Format
RISC	Reduced Instruction Set Computer
RJE	Remote Job Entry
RLE	Run Length Encoding
RLL	Radio in the Local Loop
RLL	Run Length Limited
RMI	Radio Magnetic Interference
RMM	Read Mostly Memory
RMS	Root Mean Square
RMW	Read Modify Write
RoHS	Restriction of the use of certain Hazardous Substance
ROM	Read Only Memory
RPC	Remote Procedure Call
RPD	Record of Professional Development
RPG	Report Program Generator
RPG	Role Playing Game
RPM	Rotations ( or Revolutions ) Per Minute
RPS	Revolutions Per Second
RS	Reed Solomon - Error correction technique
RS-232	Recommended Standard 232
RSA	Rivest - Shamir - Adleman
RT	Remote Terminal
RT	Rise Time
RT	Real Time
RTC	Real Time Clock
RTCA	Real Time Control Area
RTD	Resistance Temperature Detector
RTF	Rich Text Format
RTI	Real Time Interrupt
RTL	Register Transfer Level
RTL	Resistor Transistor Logic
RTOS	Real Time Operating System
RTP	Real Time Processing
RTR	Real Time Record
RTRI	Real Time Record Interpreter
RTS	Request To Send - Protocol signal
RTSP	Real Time Streaming Protocol
RTU	Remote Terminal Unit
RTV	Real Time Video
RTX	RealTime Executive
R/W	Read/Write
RZ	Return to Zero
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SAA	Systems Application Architecture
SAM	Sequential Access Memory
SAM	Serial Access Memory
SAP	Service Access Point
SAP	Service Advertising Protocol
SAR	Segmentation and Reassembly
SASI	Shugart Associates Standard Interface
SAW	Surface Acoustic Wave
SBA	Semiconductor Business Association
SBC	Single Board Computer
SC	Switched Capacitor
SCA	SubCarrier Adapter
SCADA	Supervisory Control And Data Acquisition
SCAM	SCSI Configuration Auto Magically
SCART	Societe de Constructeurs des Appareils Radio Television
SCCCD	Surface Channel Charge Coupled Device
SCFM	Sequential Character File Manager
SCI	Serial Communication Interface
SCI	Scalable Coherent Interconnect
SCL	Serial CLock
SCO	Santa Cruz Operation
SCR	Silicon Controller Rectifier
SCS	Silicon Controller Switch
SCSA	Signal Computing System Architecture
SCSI	Small Computer Systems Interface
SD	Single Density
SDH	Synchronous digital hierarchy; An ITU standard for transmitting data over optical fibre
SDI	Strategic Defense Initiative
SDLC	Synchronous Data Link Control
SDSL	Symmetrical Digital Subscriber Lines
SDRAM	Synchronous Dynamic Random Access Memory
SECAM	SEquentiel Couleurs A Memoire
SEC	Single Edge Contact
SECC	Single Edge Contact Cartridge
SEM	Scanning Electron Microscope
SEMI	Semiconductor Equipment and Materials Institute
SERC	Science and Engineering Research Council
SES	Satellite Earth Station
SET	Single Electron Transistor
SETSE	Single Electron Transistor Scanning Electrometer
SHARC	Super Hardware Architecture RISC Computer
SG	Signal Ground
SGML	Standard Generalised Markup Language
SGRAM	Synchronous Graphics Random Access Memory
S / H	Sample and Hold
SHF	Super High Frequency
SI	Systeme International
Si	Silicon
SIF	Sound Intermediate Frequency
SIF	Source Input Format
SIG	Special Interest Group
SIGGRAPH	Special Interest Group for GRAPHics
SIM	Subscriber Identity Module
SIMD	Single - Instruction Multiple - Data
SIMM	Single Inline Memory Module - Form of chip packaging
SIO	Serial Input and Output
SIPO	Serial In Parallel Out
SIPP	Single Inline Pinned Package
SISD	Single - Instruction Single - Data
SISO	Serial In Serial Out
SL	Symbolic Language
SLIC	Subcriber line interface circuit.
SLCC	Single Layer Ceramic Capacitor
SLIP	Serial Line Internet Protocol
SLSI	Super Large Scale Integration
SMA	Semiconductor Manufacturers Association - A division of FEI
SMB	Server Message Block
SMD	Surface Mount Device
SMDS	Switched Multimegabit Data Service
SMI	System Management Interrupt
SMM	Shared Memory Map
SMM	System Management Mode
SMTP	Simple Mail Transfer Protocol
SMP	Symmetric Multi-Processing
SMPS	Switched Mode Power Supply
SMR	Specialised Mobile Radio
SMT	Surface Mount Technology
S / N	Signal to Noise
SNA	System Network Architecture
SNMP	Simple Network Management Protocol
SNR	Signal to Noise Ratio
SO	Small Outline
SO	Serial Output
SOB	Start Of Block
SOC	Systems On a Chip
SO - DIMM	Small Outline - Dual Inline Memory Module
SOHO	Small Office / Home Office
SOI	Silicon on Insulator
SOIC	Small Outline Integrated Circuit
SOJ	Small Outline J - leaded - Chip package
SOL	Small OutLine
SOLV	SOLenoid Valve
SONAR	SOund NAvigation and Ranging
SONET	Synchronous Optical NETwork
SOP	Small Outline Package
SOR	Statement Of Requirement
SOS	Silicon On Sapphire
SOT	Small Outline Transistor
SP	Signal Processor
SP	Stack Pointer
SPDT	Single Pole Double Throw
SPGA	System PGA
SPI	Serial to Parallel Interface
SPICE	Simulation Program with Integrated Circuit Emphasis
SPL	Sound Pressure Level
SPLD	Simple Programmable Logic Device
SPM	Scanning Probe Microscopy
SPOOL	Simultaneous Peripheral Operation On Line
SPS	Stand - by Power Supply
SPST	Single Pole Single Throw
SPT	Sectors Per Track
SPU	Single Processor Unit
SQL	Structured Query Language
SQUID	Superconducting Quantum Interface
SR	Shift Register
SRAM	Static Random Access Memory
SS	Single Sided
SSA	Serial Storage Architecture
SSB	Single SideBand
SSC	Station Selection Code
SSI	Small Scale Integration
SSOP	Shrink Small Outline Package
SSR	Solid State Relay
SST	Single Sideband Transmission
SSTV	Slow Scan TeleVision
STDM	Synchronous Time Division Multiplexing
STM	Scanning Tunnelling Microscope
STN	Super Twisted Nematic
STR	Synchronous Transmitter-Receiver
STS - 1	Synchronous transfer signal level 1. A Sonet standard for transmission over OC - 1 optical fibre at 51.84Mbit / s
STS - 3	Synchronous transfer signal level 3. A Sonet standard for transmission over OC - 3 optical fibre at 155.84Mbit / s
STU	Streaming Tape Unit
SVGA	Super Video Graphics Array ( or Adapter )
S - VHS	Super Video Home System
SW	Short Wave
SWIFT	Society for Worldwide Interbank Financial
SWTL	Surface Wave Transmission Line
SYSGEN	SYStem GENeration
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T1	Digital transmission link standard in North America supporting 1.544Mbit / s
T3	Digital transmission link standard in North America which supports 44.736Mbit / s
TAB	Tape Automated Bonding
TACS	Total Access Communications Systems
TAPI	Telephone Applications Programming Interface
TASI	Time Assignment Speech Interpolation
TC	Temperature Coefficient
TCAM	TeleCommunications Access Method
TCF	Technical Construction File
TCL	Tool Command Language
TCM	Terminal to Computer Multiplexer
TCM	Trellis Code Modulation
TCP	Transmission Control Protocol
TCP/IP	Transmission Control Protocol / Internet Protocol
TCSEC	Trusted Computer System Evaluation Criteria
TCU	Terminal Control Unit
TD	Tunnel Diode
TDM	Time Division Multiplexing
TDMA	Time Division Multiple Access
TTN	Technology Transfer Node
TEM	Transverse Electromagnetic
TF	Transfer Function
TFD	Thin Film Detector
TFEL	Thin Film ElectroLuminescent
TFT	Thin Film Transistor
THD	Total Harmonic Distortion
THz	TeraHertz
TI	Texas Instruments
TIA	Telecommunications Industry Association
TIFF	Tagged Image File Format
TIGA	Texas Instruments Graphics Adapter
TLB	Translation - Lookaside Buffer
TLI	Transport Level Interface
TM	Transverse Magnetic
TOC	Table Of Contents
TPU	Time Processor Unit
TQA	Total Quality Assurance
TQFP	Thin Quad Flat Pack
TR	Transient Response
TS	Time Sharing
TSO	Time Sharing Option
TSOP	Thin Small Outline Package
TSSOP	Thin Shrink Small Outline Package
TSR	Terminate and Stay Resident
TTL	Transistor Transistor Logic
TTS	Time Sharing System
TTY	TeleTYpewriter
TUV	Technischer Überwachungsverein
TWT	Travelling Wave Tube
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UART	Universal Asynchronous Receiver / Transmitter
UAV	Unmanned Aerial Vehicle
UBC	Universal Block Channel
UBR	Unspecified Bit Rate traffic
UCM	Universal Cable Module
UCS	Universal Character Set
UDLC	Universal Data Link Protocol
UHF	Ultra High Frequency
UHV	Ultra High Vacuum
UJT	UniJunction Transistor
UKAS	United Kingdom Accreditation Service
UL	Underwriters Laboratories
ULSI	Ultra Large Scale Integration
UMB	Upper Memory Block
UMIST	University of Manchester Institute of Science and Technology
UML	Unified Modelling Language
UMTS	Universal Mobile Telecommunications System
UPC	Universal Product Code
UPS	Uninterruptible Power Supply
URL	Universal Resource Locator Logical address identifying a resource on the Internet
URL	User Requirements Language
USART	Universal Synchronous - Asynchronous Receiver / Transmitter
USB	Universal Serial Bus
USM	Unlisted Securities Market
USRT	Universal Synchronous Receiver Transmitter
UTC	Universal Time Coordinated
UTC	Universal Time Code
UTOC	User Table of Contents
UTP	Unshielded Twisted Pair
UUCP	Unix to Unix Copy Program
UV	UltraViolet
UVLO	UnderVoltage LockOut
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V	Volt
VA	Volt Ampere
VAC	Volts Alternating Current
VAN	Value Added Network
VAR	Value Added Reseller
VAR	VARiable
VBR	Variable Bit Rate traffic
VCA	Voltage Control Amplifier
VCCI	Voluntary Control Council for Interference
VCD	Variable Capacitance Diode
VCF	Voltage Control Filter
VCO	Voltage Controlled Oscillator
VCR	Video Cassette Recorder
VCSEL	Vertical Cavity Surface Emitting Laser
VCXO	Voltage Controlled Crystal Oscillator
VDB	Visitor Data Base
VDC	Volts Direct Current
VDD	Virtual Device Driver
VDI	Virtual Device Interface
VDLS	Very high speed Digital Subscriber Lines
VDMOS	Vertical Double - diffused Metal Oxide Semiconductor
VDN	Virtual Data Network
VDR	Voltage Dependent Resistor
VDT	Video Display Terminal
VDU	Video Display Unit
VESA	Video Electronics Standards Association
VF	Vacuum Fluorescent
VF	Voice Frequency
VFAT	Virtual File Allocation Table
VFC	Voltage to Frequency Converter
VFO	Variable Frequency Oscillator
VGA	Video Graphics Array ( or Adapter )
VGC	Video Graphics Controller
VHDL	VHSIC Hardware Description Language
VHF	Very High Frequency
VHS	Very High Speed
VHS	Video Home System
VHS - C	Video Home System - Compact
VHSIC	Very High Speed Integrated Circuit
VIO	Virtual Input / Output
VIS	Visual Instruction Set
VISC	Video Instruction Set Computing
VLB	VESA Local Bus or VL-Bus
VLF	Very Low Frequency
VLIW	Very Long Instruction Word
VLSI	Very Large Scale Integration
VLT	Video Look up Table
VM	Virtual Machine
VM	Virtual Memory
VME	Versa Module Eurocard
VMOS	V - groove Metal Oxide Semiconductor
VMS	Virtual Memory System
VOIP	Voice Over Internet Protocol
VOL	Volume Label
VOM	Volt OhmMeter
VOX	Voice Operated transmit
VPN	Virtual Private Network
VR	Virtual Reality
VR	Voltage Regulator
VRAM	Video Random Access Memory
VRC	Vertical Redundancy Check
VRML	Virtual Reality Modelling Language
VS	Virtual Storage
VS	Vertical Sync
VSAM	Virtual Storage Access Method
VSI	Virtual Socket Interface
VSIA	Virtual Socket Interface Alliance
VSWR	Voltage Standing Wave Ratio
VT	Validation Test
VT	Virtual Terminal
VTAM	Virtual Telecommunications Access Method
VTM	Voltage Tunable Magnetron
VTOC	Volume Table Of Contents
VTR	Video Tape Recorder
VTVM	Vacuum Tube Volt Meter
VU	Volume Unit
VVMOS	Vertical V - groove Metal Oxide Semiconductor
VXO	Variable crystal Oscilator
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WABI	Windows Application Binary Interface
WACK	Wait before ACKnowledge
WAIS	Wide Area Information Server
WAN	Wide Area Network
WARC	World Administration Radio Conference
WATS	Wide Area Telephone Service
WCDMA	Wideband Code Division Multiple Access
WD	Western Digital
WDC	World Data Centre
WDM	Wavelength Division Multiplexing
WDT	Watch Dog Timer
WE	Write Enable
WEEE	Waste from Electrical & Electronic Equipment
WHR	Watt HouR
WIMP	Windows Icons Menus and Pointing device
WINS	Windows Internet Names Services
WISE	World Information Systems Exchange
WLL	Wireless Local Loop
WMF	Windows Meta File
WORM	Write - Once Read - Many
WOSA	Windows Open System Architecture
WP	Word Processor
WP	Write Protect
WPM	Words Per Minute
WR	WRite - logic signal
WRAM	Window Random Access Memory
WRS	Wireless Relay Station
WS	Wait State
WSTS	World Semiconductor Trade Statistics
WV	Working Voltage
WW	Wire Wound
WWW	World Wide Web
WYSIWYG	What You See Is What You Get
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XA	eXtended Architecture
XCA	eXternal Communication Adapter
XGA	eXtended Graphics Array
XGA	eXtended Graphics Adapter
XMS	eXtended Memory Specification
XMT	TransMiT
XNS	Xerox Network Services
XOR	eXclusive OR
XT	eXtended Technology
XTAL	crysTAL
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YAG	Yttrium Aluminium Garnet - Material used in lasers
YIG	Yttrium Iron Garnet
YUV	Luminance and Chrominance vectors
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ZBR	Zero Bit Reduction
ZBR	Zone Bit Recording
ZD	Zero Defects
ZIF	Zero Insertion Force
ZIP	Zigzag Inline Package
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