A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

 

 

A

 

3ACC . . . 3A Central Control

3D . . . 3Dimensional

4GL . . . Fourth Generation Language

5B6B . . . 5 data BBits, 6 transmission Bits

16-QAM . . .16 (points) Quadrature Amplitude Modulation

A/D . . . Analog / Digital (converter)

AAAI . . . American Association for Artificial Intelligence

AAB . . . Auto Answer Back

AAL . . . ATM Adaptive Layer

ABA . . . American Banks Association

ABI . . . Application Binary Interface (Unix)

ABM . . . Asynchronous Balanced Mode

AC . . . Alternating Current (CA)

ACE . . . Advanced Computer Environment

ACIA . . . Asynchronous Communications Interface Adapter

ACK . . . ACKnowledge (char 06 - 06H)

ACM . . . Association for Computing Machinery

ACTA . . . American Carriers Telecommunication Association

ADC . . . Analog Digital Converter (A/D)

ADCCMP . . . Advanced Data Communications Control Procedures (ANSI X3.66)

ADPCM . . . Adaptive Differential Pulse Coded Modulation

ADSL . . . Asymmetrical Digital Subscriber Line

AEA . . . American Electronics Association

AFC . . . Automatic Frequency Control

AFNOR . . . Association Francaise de NORmalization

AGC . . . Automatic Gain Control

AGC . . . Automatic Generation Control

AI . . . Artificial Intelligence

AIN . . . Advanced Intelligent Network

AKA . . . Also Known As

ALN . . . Adaptive Logic Network

ALU . . . Arithmetic and Logic Unit

AM . . . Amplitude Modulation

AM/FM . . . Automatic Mapping / Facility Management

AMI . . . Alternate Mark Inversion

AMPS . . . Advanced Mobile Phone System (TIA 553)

AMR . . . Automatic Meter Reading

ANI . . . Automatic Number Identification (tel)

ANOVA . . . ANalysis Of VAriance

ANSA . . . Advanced Network System Architecture

ANSI . . . American National Standards Institute (NY)

APD . . . Avalanche Photo Diode

API . . . Application Program Interface

APPC . . . Advanced Program to Program Communication (IBM)

APPN . . . Advanced Peer to Peer Networking (IBM)

ARCnet . . . Attached Resource Computer NETwork

ARO . . . After Receipt of Order

ARP . . . Address Resolution Protocol (Layer 3)

ARQ . . . Automatic Repeat reQuest

ASA . . . American Standards Association

ASAP . . . As Soon As Possible

ASCII . . . American Standard Code for Information Interchange (7 bits - ANSI - CCITT N¦ 5)

ASIC . . . Application Specific Integrated Circuit

ASK . . . Amplitude Shift Keying

ASME . . . American Society of Mechanical Engineers

ASN.1 . . . Abstract Syntax Notation 1 (ISO 8824 8825)

AT . . . Apple Talk

AT . . . ATtention (Hayes Modems Command Prefix)

AT&T . . . American Telegraph & Telephone

ATE . . . Automatic Test Equipment

ATM . . . Asynchronous Transfer Mode (Cell-Switching, Fast Packet)

ATM . . . Automated Teller Machine

ATV . . . Advanced TeleVision

AUI . . . Attachment Unit Interface (Ethernet, 15-pin)

AVC . . . Automatic Volume Control

AWG . . . American Wire Gauge

B
(return to top)

B&W . . . Black and White (TV)

BACnet . . . Building Automation and Control NETwork

BABT . . . British Approval Board for Telecommunications

Balun . . . BALanced-UNbalanced

BASIC . . . Beginners' All-purpose Symbolic Instruction Code

BAW . . . Bulk Acoustic Wave

BBS . . . Bulletin Board Service

BCC . . . Block Check Character

BCD . . . Binary Coded Decimal

BCH . . . Bose Chaudhuri Hocquenguem (code)

BER . . . Bit Error Rate

BERT . . . Bit Error Rate Tester

BFT . . . Binary File Transfer

BGP . . . Border Gateway Protocol

BHC . . . Busy Hour Calls (tel)

BiCMOS . . . Bipolar Complementary Metal Oxide Silicon

B-ICI . . . Broad band Inter-Carrier Interface

BIL . . . Basic impulse Insulation Level

BIOS . . . Basic Input/Output System

B-ISDN . . . Broad band Integrated Services Digital Network

BISUP . . . Broad band ISdn User Part

BISYNC . . . BISYNChronous (BSC IBM)

BIT . . . BInary digiT

BITNET . . . Because It's Time NETwork

BNC . . . Bayonet Normalized Connector

BNF . . . Backus-Naur Form

BOF . . . Birds Of a Feather

bpi . . . Bits Per Inch

bps . . . Bits Per Second

BPSK . . . Binary Phase Shift Keying

BQFP . . . Bumpered Quad Flat Pack

BRA . . . Basic Rate Access

BRI . . . Basic Rate Interface (ISDN: 2x64+16 kbps)

BSC . . . Binary Synchronous Communication protocol (BISYNC - IBM)

BSD . . . Berkeley System Distribution (Unix)

BSI . . . British Standards Institution (London)

BSP . . . Binary Space Partition (tree)

BSS . . . Broad band Switching System

BZT . . . Bundesamt f'r Zulassungen in der Telekommunication (Germany)

 

 

 

C
(return to top)

C-MOS . . . Complementary Metal-Oxide Silicon
CAD . . . Computer Aided Design
CAI . . . Computer Aided Instruction
CAM . . . Computer Aided Manufacturing

CAM . . . Content Addressable memory

CAMAC . . . Computer Automated Measurement And Control

CAN . . . Controller Area Network (Bosch Intel)

CASE . . . Computer Aided Software Engineering

CAST . . . Computer Aided Software Testing

CAT . . . Computerized Axial Tomography

CATV . . . Community Antenna (CAble?) TeleVision

CB . . . Citizens Band

CBDS . . . Connectionless Broadband Data Service

CBR . . . Constant Bit Rate

CCD . . . Charge-Coupled Device

CCS . . . Common Channel Signalling (SS7) (tel)

CCTV . . . Closed Circuit TeleVision

CD . . . Carrier Detect (V24)

CD . . . Compact Disc

CD-A . . . Compound Document Architecture

CD-R . . . Compact Disc Rewriteable

CD-ROM . . . Compact Disc Read Only Memory

CDDI . . . Copper Distributed Data Interface

CDE . . . Common Desktop Environment

CDMA . . . Code Division Multiple Access (Cellular, IS-95)

CDPD . . . Cellular Digital Packet Data

CEBus . . . Consumer Electronic Bus

CERT . . . Computer Emergency Response Team (cert@cert.org - 412 268 7090)

cfm . . . Cubic Feet by Minute

CGI . . . Computer Generated Images

CGM . . . Computer Graphics Metafile

CHAP . . . Challenge Handshake Authentication Protocol

CHRL . . . Common Hardware R Platform (Power PC)

CIDR . . . Classless InterDomain Routing

CIE . . . Commission International de l'Eclairage (Paris)

CIF . . . Cargo, Insurance & Freight

CIGRE . . . Conference Internationale des Grandes Reseaux El‰ctriques (Paris)

CIM . . . Computer Integrated Manufacturing

CIPM . . . Comit‰ Internationale des Poids et Mesures (Paris)

CIR . . . Committed Information Rate

CIRC . . . Cross Interleaved Reed-salomon Code

CISC . . . Complex Instruction Set Computer

CITEL . . . Comision Interamericana de TELecomunicaciones

CLNP . . . ConnectionLess Network Protocol (ISO)

CLNS . . . Connection Less Network Service (ISO 8473)

CMIP . . . Common Management Information Protocol (ISO)

CMOS . . . Complementary Metal Oxide Semiconductor

CMRR . . . Common Mode Rejection Rate

CMYK . . . Cyan Magenta Yellow blacK

CNR . . . Carrier to Noise Ratio

COBOL . . . COmmon Business Oriented Language

CORBA . . . Common Request Object Broker Architecture

COS . . . Corporation of Open Systems (International)

CPE . . . Customer Premises Equipment

cpi . . . Characters Per Inch

cps . . . Characters Per Second

CPU . . . Central Processor Unit

CR . . . Carriage Return (char 13 - 0DH)

CRC . . . Cyclic Redundancy Check

CRCC . . . Cyclic Redundancy Check Character

CRT . . . Cathode Ray Tube

CSA . . . Canadian Standards Association (Rexdale)

CSMA/CD . . . Carrier Sense with Multiple Access/Collision Detection (Ethernet IEEE 802.3)

CSU . . . Channel Service Unit

CT . . . Cordless Telephony

CTD . . . Charge Transfer Device

CTI . . . Computer-Telephony Integration

CTIA . . . Cellular Telecommunications Industry Association

CTM . . . Centralized Technical Management

CTR . . . Common Technical Requirement (Europe)

CTS . . . Clear To Send

CW . . . Continuous Wave

D
(return to top)

D/A . . . Digital to Analog Converter (DAC)

DA(S) . . . Distribution Automation (System)

DAB . . . Digital Audio Broadcasting

DAC . . . Digital to Analog Converter (D/A)

DAMA . . . Demand Assigned Multiple Access

DAT . . . Digital Audio Tape

DB . . . DeciBel

dBm . . . DeciBels (relative to 1 mw)

DBMS . . . Data Base Management System

DBS . . . Direct Broadcast Satellite

DBS . . . Direct Broadcast Service

DBT . . . Deutsche Bundespost Telekom

DC . . . Direct Current

DCC . . . Digital Compact Cassette

DCE . . . Data Circuit-terminating Equipment

DCE . . . Distributed Computing Environment (OSF)

DCFL . . . Direct Coupled Field effect transistor Logic

DCML . . . Differential Current Mode Logic

DCN . . . Data Communications Network

DCS . . . Desktop Color Separation

DCS . . . Distributed Control System

DCS . . . Dynamic Channel Selection

DCT . . . Digital Cordless Telephone

DCT . . . Discrete Cosine Transform

DCTL . . . Direct Coupled Transistor Logic

DDCMP . . . Digital Data Communications Message Protocol (DEC)

DDD . . . Direct long Distance Dialing (tel)

DDE . . . Dynamic Data Exchange (MS Windows)

DDS . . . Digital Data System

DDS . . . Digital Data Standard (tapes)

DEA . . . Data Encryption Algorithm

DECNET . . . Digital Equipment Corporation NETwork

DECT . . . Digital European Cordless Telecommunications

DES . . . Data Encryption Standard (NBS)

DFR . . . Digital Fault (/transient) Recorder

DFT . . . Discrete Fourier Transform

DFSK . . . Double Frequency Shift Keying

DHCP . . . Dynamic Host Configuration Protocol

DID . . . Direct Inward Dialing

DIMM . . . Dual In line Memory Module

DIN . . . Deutsche Industrie Norm (Germany)

DIP . . . Dual In-line Package

DIU . . . Data Interface Unit

DIX . . . Digital Intel Xerox (Ethernet)

DIW . . . type D Inside Wire (STP)

DLC . . . Data Link Control (sub-layer 2)

DLC . . . Digital Loop Carrier

DLE . . . Data Link Escape (char 16 - 10H))

DLG . . . Digital Line Graph (vector map files format)

DLL . . . Dynamic Link Library (Windows)

DLSw . . . Data Link SWitching

DM . . . Delta Modulation

DMA . . . Direct Memory Access

DME . . . Distributed Management Environment

DMI . . . Desktop Management Interface

DMM . . . Digital MultiMeter

DMS . . . Distribution Management System

DMTF . . . Desktop Management Task Force

DNIC . . . Data Network Identification Code (X-121)

DNS . . . Domain Name System (Internet )

DO . . . Diode Outlook

DPDT . . . Double-Pole Double-Throw (switch)

dpi . . . Dots Per Inch

DPSK . . . Differential Phase Shift Keying

DQPSK . . . Differential Quaternary Phase Shift Keying

DQDB . . . Distributed Queue Dual Bus

DRAM . . . Dynamic Random Access Memory

DS-3 . . . Digital Signalling level 3 (44.768 Mbps)

DS/CDMA . . . Direct Sequence CDMA

DS/SS . . . Direct Sequence Spread Spectrum

DSI . . . Digital Speech Interpolation

DSL . . . Digital Subscriber Line

DSM . . . Demand Side Management

DSO . . . Digital Storage Oscilloscope

DSP . . . Digital Signal Processing

DSS1 . . . Digital Subscriber Signalling System 1 (tel)

DSU . . . Data Service Unit

DTE . . . Data Terminal Equipment

DTL . . . Diode-Transistor Logic

DTMF . . . Dual Tone MultiFrequency (signalling)

DTP . . . DeskTop Publishing

DTR . . . Data Terminal Ready

DTU . . . Data Terminal Unit

DVD . . . Digital Video (Versatile?) Disc

DVI . . . Digital Video Interactive (Intel)

DVM . . . Digital Volt Meter

DVST . . . Direct View Storage Tube

DXF . . . Drawing eXchange file Format

DXI . . . Data eXchange Interface

E

E&M . . . rEceive & transMit (telef, signalling) (Ear & Mouth?)

E1 . . . European 1 (2048 bps, 30-channel PCM)

EBU . . . European Broadcast Union

EBCDIC . . . Extended Binary Coded Decimal Interchange Code (IBM)

EC . . . European Commission

EC . . . European Community

ECB . . . Electronic Code Book (DES)

ECG . . . ElectroCardioGram

ECL . . . Emitter-Coupled Logic

ECM . . . Electronic Counter Measures

ECMA . . . European Computer Manufacturers Association (Genˆve)

ECU . . . European Currency Unit

EDFA . . . Erbium Doped Fiber Amplifier

EDH . . . Electronic Data Handling

EDI . . . Electronic Data Interchange

EDIFACT . . . Electronic Data Interchange For Administration, Commerce and Trade

EDO . . . Extended Data Out (memory)

EDP . . . Electronic Data Processing

EDT . . . Eastern Daylight-saving Time

EEPROM . . . Electronically Erasable Programmable Read-Only-Memory

EFT . . . Electronic Funds Transfer

e.g. . . . Exempli Gratia

EGA . . . Enhanced Graphics Adapter

EGP . . . Exterior Gateway Protocol

EHV . . . Extra High Voltage

EIA . . . Electronic Industries Association (Washington)

EIRP . . . Effective Isotropic Radiated Power

EISA . . . Extended ISA (PC Bus - 32 bits)

EL . . . Electro-Luminiscent

ELD . . . Electro-Luminiscent Display

EM . . . Electro-Magnetic

EMC . . . Electro-Magnetic Compatibility

EMF . . . Electro-Motive Force

EMI . . . Electro-Magnetic Interference

EMP . . . Electro-Magnetic Pulse

EMR . . . Electro-Magnetic Radiation

EMS . . . Energy Management System

EMS . . . Expanded Memory Specification

EOF . . . End Of File

EOF . . . End Of Frame

EOP . . . End Of Packet

EOS . . . Electrical OverStress

EOT . . . End Of Transmission (char 4 - 04H)

EPA . . . Environment Protection Agency

EPP . . . Enhanced Parallel Port

EPRI . . . Electric Power Research Institute (Palo Alto)

EPROM . . . Erasable Programmable Read-Only-Memory

EPS . . . Encapsulated Post Script

EQ . . . Equipment Qualification

E-R . . . Entity-Relationship (diagram)

ERC . . . European Radio Commission

ERP . . . Effective Radiated Power

ESC . . . ESCape (char 027 - 1BH)

ESD . . . Electronic Software Distribution

ESD . . . ElectroStatic Discharge

ESDI . . . Enhanced Small Device Interface

ESN . . . Electronic Serial Number

ESPRIT . . .European Strategic Program for Research and development of Information

Technology

EST . . . Eastern Standard Time

ETB . . . End of Text Block (char 023 - 17H)

ETC . . . Enhanced Throughput Cellular

ETSI . . . European Telecommunications Standards Institute (Cedex - F)

ETX . . . End of TeXt (char 3 - 03H)

EV . . . Electric Vehicle

eV . . . Electron Volt (1,602x10-19 J)

EVC . . . Enhanced Video Connector (VESA)

EXOR . . . EXclusive OR

F

FAQ . . . Frequently Asked Questions

FAT . . . File Allocation Table

FAX . . . FAcsimile

FBW . . . Fly By Wire

FC . . . Fibre Channel

FCC . . . Federal Communications Commission (Washington)

FCS . . . Frame Check Sequence

FD . . . Flexible (Floppy) Disk

FDDI . . . Fiber Distributed Data Interface (ISO 9314)

FDM . . . Frequency Division Multiplex

FDX . . . Full DupleX

FEA . . . Finite Elements Analysis

FEC . . . Forward Error Correction

FEP . . . Front End Processor

FERAM . . . Ferro Electric Random Access Memory

FET . . . Field Effect Transistor

FEXT . . . Far End cross Talk

FFT . . . Fast Fourier Transform

FH/SS . . . Frequency Hopping Spread Spectrum

FHP . . . Fractional Horse Power (motor)

FHT . . . Fast Hartley Transform

FIFO . . . First In, First Out

FIP . . . Factory Information Protocol

FIPS . . . Federal Information Processing Standard

FITL . . . Fiber In The Loop

FLAG . . . Fiber optic Link Around the Globe

FLC . . . Fuzzy Logic Control

FLOP . . . FLoating point OPeration

FLP . . . FLuorescent Panel

FM . . . Frequency Modulation

FOB . . . Free On Boards

FOIRL . . . Fiber Optic Inter Repeater Link (Ethernet - IEEE 802.3c .3d)

FOR . . . Forced Output Rate

FORTRAN . . . FORmula TRANslator

FOT . . . Fiber Optic Transceiver

FP . . . Flat Pack (SMD)

FP . . . Function Points

FPD . . . Flat Panel Display

FPDI . . . Flat Panel Display Interface

FPGA . . . Field Programmable Gate Array

FPU . . . Floating Point Unit

FR . . . Frame Relay

FRAD . . . Frame Relay Access Device

FSK . . . Frequency Shift Keying

FT1 . . . Fractional T1

FTAM . . . File Transfer, Access and Management

FTP . . . File Transfer Protocol

FTP . . . Foiled Twisted Pair (ScTP)

FTTC . . . Fiber To The Curb

FTTH . . . Fiber To The Home

FTZ . . . Fernmelde Technischen Zentralamt (Darmstadt)

FWHM . . . Full-Width at Half Maxima

FYI . . . For Your Information

G

GaAs . . . GAlium ArSenide

GaAsP . . . GAlium ArSenide Phosphide

GaN . . . GAllium Nitride

GEO . . . Geosynchronous Earth Orbit

GIF . . . Graphics Interchange Format

GII . . . Global Information Infrastructure

GIGO . . . Garbage In, Garbage Out

GII . . . Global Information Infrastructure

GIS . . . Gas Insulated Switchgear

GIS . . . Geographical Information System

GKS . . . Graphical Kernel System

GMSK . . . Gaussian Minimum Shift Keying

GMT . . . Greenwich Meridian Time

GND . . . GrouND (0V)

GoS . . . Grade Of Service

GOSIP . . . Government OSI Profile

GPIB . . . General Purpose Instruments Bus (HP-IB, IEEE-488)

GPS . . . Global Positioning System

GSC . . . Global Standards Collaboration

GSM . . . Global Standard for Mobile

GSM . . . Groupe Speciale Mobile

GTO . . . Gate Turn-Off (thyristor)

GUI . . . Graphical User Interface

H

HBT . . . Heterojunction Bipolar Transistor

HD . . . Hard Disk

HD . . . High Density

HDB . . . High Density Bipolar (code)

HDB3 . . . High Density Bipolar 3-level (code)

HDD . . . Hard Disk Drive

HDF . . . Hierarchical Data Format

HDI . . . High Density Interface (connector)

HDL . . . Hardware Description Language

HDLC . . . High level Data Link Control (IBM, Layer 2) (ISO 4335)

HDSL . . . High rate Digital Subscriber Loop (Line?)

HDTV . . . High Definition TeleVision

HDX . . . Half DupleX

HF . . . High Frequency

HERF . . . High Energy Radio Frequency

HFC . . . Hybrid Fiber/Coaxial network

HI . . . Host Interface

Hiperlan . . . HIgh PErformance Radio LAN

HiPPI . . . HIgh Performance Parallel Interface

HLL . . . High Level Logic

HLN . . . High Level Network

HLS . . . Hue Lightness Saturation (color)

HMA . . . High Memory Area

HMD . . . Head Mounted Display

HMI . . . Human-Machine Interface

HP . . . Horse Power (746 W)

HP-IB . . . Hewlett Packard Instrument Bus (GPIB)

HP-PCL . . . Hewlett Packard Plotter Control Language

HPCC . . . High Performance Computing and Communications

HPGL . . . Hewlett Packard Graphic Language

HSB . . . Hue Saturation Brightness (color)

HSL . . . Hue Saturation Lightness (color)

HSSI . . . High Speed Serial Interface

HSTP . . . High Speed Transport Protocol

HSV . . . Hue Saturation Value (color)

HT . . . Horizontal Tab (TAB, char 09 - 09H)

HTL . . . High Threshold Logic

HTML . . . HyperText Mark-up Language (WWW)

HUD . . . Head Up Display

HV . . . High Voltage

HVAC . . . Heating, Ventilation and Air Conditioning

HVC . . . Hue Value Chroma (color)

HVDC . . . High Voltage Direct Current

I

I&A . . . Identification & Authentication

IBDN . . . Integrated Building Distribution Network

IBOC . . . In Band On Channel

IBS . . . Intelsat Business Services

IC . . . Integrated Circuit

IC . . . Inter-exchange Carrier

I-CASE . . . Integrated Computer -Aided Software Engineering

ICEA . . . Insulated Cable Engineers Association

ICMP . . . Internet Control Message Protocol

ICO . . . Intermediate Circular Orbit

ICW . . . Interrupted Continuous Wave

ID . . . IDentity, IDentifier

IDE . . . Integrated Drive Electronics (interface)

IDF . . . Intermediate Distribution Frame (tel)

IDF . . . Interface Definition Language

IDLC . . . Integrated Digital Loop Carrier

IDP . . . Internet Data Packet

IDRP . . . InterDomain Routing Protocol (ISO)

IEC . . . Inter Exchange Carrier

IEC . . . International Electrotechnical Comission (Genˆve)

IEE . . . Institute of Electrical Engineers (London)

IEEE . . . Institute of Electric and Electronics Engineers (NY)

IETF . . . Internet Engineering Task Force

IF . . . Intermediate Frequency

IFL . . . Inter-Facility Link

IGBT . . . Insulated Gate Bipolar Transistor

IGES . . . Initial Graphics Exchange Standard

IGFET . . . Insulated Gate Field Effect Transistor

IGP . . . Interior Gateway Protocol

ILD . . . Injection Laser Diode

ILS . . . Instrument Landing System

IMA . . . Interactive Multimedia Association

IMAP . . . Internet Message Access Protocol

IMD . . . InterModulation Distortion

IMPATT . . . IMPact Avalanche Transit Time

IMTS . . . Improved Mobile Telephone System

IN . . . Intelligent Network

INA . . . Integrated Network Architecture

INMARSAT . . . INternational MARitime SATellite

INTELSAT . . . INternational TELecommunications SATellite organization

I/O . . . Input/Output

IP . . . Internetwork Protocol (layer 3)

IPng . . . Internet Protocol Next Generation (IETF)

IPv6 . . . Internet Protocol Version 6

IPX . . . Internet Packet Exchange (Netware, layer 3)

IR . . . InfraRed

IRED . . . InfraRed Emitting Diode

IRL . . . Inter Repeater Link (Ethernet)

IRQ . . . Interrupt ReQuest line (vector)

IS . . . Interim Standard (EIA)

ISA . . . Industry Standard Architecture (PC bus)

ISA . . . Instrumentation Society of America

ISBN . . . International Standard Book Number

ISCC . . . Inter-Society Color Council

ISDN . . . Integrated Services Data Network

IS-IS . . . Intermediate System-Intermediate System routing exchange protocol (layer 3, ISO)

ISM . . . Instrumentation, Scientific and Medical (Band)

ISO . . . International Standards Organization (Genˆve)

ISP . . . Internet Service Provider

ISR . . . International Simple Resale

ITR. . . . Integrated Thyristor / Rectifier

ITS90 . . . International Temperature Scale 1990

ITSC . . . International Telecommunications Standards Conference

ITU . . . International Telecommunications Union (Genˆve)

ITU-R . . . ITU Telecommunications Union - Radio Communications Sector

ITU-T . . . ITU Telecommunications Union - Telecommunications Sector

ITU-TS . . . ITU Telecommunications Standardization

IVA. . . . Integrated Voice Application

IVDLAN . . .Integrated Voice/Data Local Area Network (IEEE 802.9)

IVHS . . . Intelligent Vehicle Highway System

J

JCL . . . Job Control Language

JDC . . . Japan's Digital Communications

JEDEC . . . Joint Electron Devices Engineering Council

JEIDA . . . Japan Electronic Industry Development Association

JIS . . . Japan Industry Standard

JIT . . . Just In Time

JPEG . . . Joint Photographic Experts Group

JTC . . . Joint Technical Committee

K

KB . . . Knowledge Base (AI)

KB . . . KiloBytes

kbps . . . Kilo Bits Per Second

KWIC . . . KeyWord In Context

L

LAN . . . Local Area Network

LAP . . . Link Access Procedure

LAP-B . . . Link Access Procedure, Balanced (Multilink operation procedure, X25)

LAP-D . . . Link Access Procedure, D Channel

LAP-M . . . Link Access Procedure for Modems

LASER . . . Light Amplification by Stimulated Emission of Radiation

LAT . . . Local Area Transport (DEC,Ethernet)

LATA . . . Local Area Terminal Access (USA)

LCD . . . Liquid Crystal Display

LD . . . Laser Disc

LDF . . . Low Density Foam (cables)

LEC . . . Local Exchange Carrier

LED . . . Light Emitting Diode

LEO . . . Low Earth Orbit

LERP . . . Low End Reference Platform

LF . . . Line Feed (char 10 -0AH)

LIBOR . . . London Inter Bank flOating Rate

LIDAR . . . LIght Detection And Ranging

LIF . . . Low Insertion Force

LIFO . . . Last in, First Out

LIM EMS . . . Lotus-Intel-Microsoft Expanded Memory Specification

LIP . . . Large Internet Packet

LLC . . . Logical Link Control

LMI . . . Link Management Interface (Frame Relay)

LNA . . . Low Noise Amplifier

LNC . . . Low Noise Converter

LNM . . . LAN Network Management (IBM)

LP . . . Linear Programming

LPC . . . Linear Predictive Coding

lpi . . . Lines Per Inch

LQ . . . Letter Quality

LSAP . . . Link layer Service Access Point

LSB . . . Least Significant Bit

LSI . . . Large Scale Integration

LUN . . . Logical Unit Number

LUT . . . Look Up Table

LZ-78 . . . Lempel & Ziv 1978 (compression)

LZW . . . Lempel, Ziv & Welch

M

MAC . . . Media Access Control (sub-layer 2)

MAC . . . Multiplexed Analog Components (TV)

MAN . . . Metropolitan Area Networks

MAP . . . Manufacturing Automation Protocol

MAPs . . . Multiple Access ProtocolS

MAS . . . Multiple Address System

MASER . . . Microwave Amplification by Stimulated Emission of Radiation

MAU . . . Medium Attachment Unit (Ethernet)

MBE . . . Molecular Beam Epitaxy

MBone . . . Multicast backBONE (Internet)

MC . . . Micro Channel (IBM)

MCA . . . Micro Channel Architecture (IBM)

MCGA . . . MultiColor Graphics Array

MCM . . . Multi Chip Module

MCPC . . . Multiple Channel Per Carrier

MD . . . Mini Disk

MDA . . . Monochrome Display Adapter

MDF . . . Main Distribution Frame (tel)

MDI . . . Medium Dependent Interface

MEMS . . . Micro Electro Mechanical Systems

MEO . . . Medium Earth Orbit

MESFET . . . MEtal Semiconductor Field Effect Transistor

MFLOPS . . . Million of FLoating point OPerationS

MFM . . . Modified Frequency Modulation

MHS . . . Message Handling Services

MIB . . . Management Information Base

MIC . . . Media Interface Connector

MIC . . . Monolithic Integrated Circuit

MICR . . . Magnetic Ink Character Recognition

MIDI . . . Musical Instruments Digital Interface

MIF . . . Management Information File

MIL . . . MILitary standard (USA)

MILSPEC . . . MILitary SPECification (USA)

MIME . . . Multipurpose Internet Mail Extensions

MIPS . . . Millions of Instructions Per Second

MIS . . . Management Information System

MIT . . . Massachusetts Institute of Technology (USA)

MITI . . . Ministry of International Trade and Industry (Japan)

MJTC . . . MultiJunction Thermal Converter

MKSA . . . Meter Kilogram Second Ampere (SI)

MMI . . . Man Machine Interface

MMIC . . . Monolithic Microwave Integrated Circuit

MMW . . . MilliMeter Waves

MNOS . . . Metal Nitride Oxide Semiconductor

MNP . . . Microcom Networking Protocol

MO . . . Magneto Optical (disk)

MO/CD-R . . . Magneto Optics Compact Disc Rewriteable

Modem . . . MOdulator-DEModulator

MOS . . . Metal-Oxide Silicon/Semiconductor

MOSFET . . . Metal-Oxide Silicon Field Effect Transistor

MOV . . . Metal-Oxide Varistor

MPC . . . Multimedia Personal Computer

MPEG . . . Motion Picture Experts Group

MPGA . . . Mask Programmable Gate Array

MPP . . . Massively Parallel Processing

MPS . . . Message Passing System

MPU . . . Micro Processor Unit

MS . . . Master Station

MSB . . . Most Significant Bit

MS-DOS . . . MicroSoft Disk Operating System

MSI . . . Medium Scale Integration

MSK . . . Minimum Shift Keying

MSS . . . Mobile Satellite Service

MTA . . . Message Transfer Agent

MTBF . . . Mean Time Between Failures

MTS . . . Mobile Telephone System

MTTR . . . Mean Time To Repair

MUX . . . MUltipleXor

MV . . . Medium Voltage

MVS . . . Multiple Virtual Storage (IBM)

MW . . . Mega Watt

MW . . . Micro Wave

MXI . . . Multisystem eXtension Interface (bus)

N

N/A . . . Not Applicable

NA . . . Numeric Aperture

NAU . . . Network Access Point

NAU . . . Network Addressable Unit

NBS . . . National Bureau of Standards œ(NIST)

NC . . . Network Congestion (No Connection)

NC . . . Numeric Control

NCC . . . Network Control Center

NCGA . . . National Computer Graphics Association

NCP . . . Network Control Protocol (IBM)

NCS . . . National Communications System (USA)

NEC . . . National Electric Code (USA)

NEMA . . . National Electric Manufacturers Association (USA)

NEP . . . Noise Equivalent Power

NESC . . . National Electric Safety Code (USA)

NET . . . Normes Europennes de Telecommunications

NEXT . . . Near-End Cross Talk

NF . . . Noise Figure

NFS . . .Network File Services

NIC . . . Network Information Center (Internet)

NIC . . . Network Interface Card

NiCad . . . NIckel CADmium (battery)

NII . . . National Information Infrastructure

NiMH . . . NIckel Metal Hydride (battery)

NIST . . . National Institute of Standards & Technology

NIU . . . Network Interface Unit

NLM . . . Network Loadable Module (Netware)

NMF . . . Network Management Forum

NMOS . . . Negative Metal Oxide Silicon

NMR(I) . . . Nuclear Magnetic Resonance (Imaging)

NMRR . . . Normal Mode Rejection Rate

NMS . . . Network Management System

NMT . . . Nordic Mobile Telephone

NNI . . . Network Node Interface

NOC . . . Network Operating Center

NPN . . . Negative-Positive-Negative

NPR . . . Non Polarized Radial

NRAM . . . Non Volatile RAM

NRZ . . . Non Return to Zero

NRZI . . . Non Return to Zero Inverted

NSAP . . . Network Service Access Point

NSF . . . National Science Foundation

NSFNet . . . National Science Foundation NET

NTC . . . Negative Temperature Coefficient

NTSC . . . North american Television Standards Committee

NVP . . . Nominal Velocity of Propagation

NVRAM . . . Non-Volatile RAM

O

 

OA&M . . . Operations, Administration & Maintenance

OBP . . . Open Bridging Protocol

OC-1 . . . Optical Carrier level 1 (51.84 Mbps)

OCR . . . Optical Character Recognition

OCWR . . . Optical Continuos Wave Reflectometer

OD . . . Outside Diameter

ODA . . . Office Document Architecture (ISO 8613)

ODBC . . . Open Data Base Connectivity

ODI . . . Open Data-Link Interface (Netware)

ODIF . . . Office Document Interchange Format (ISO 8613)

OEIC . . . OptoElectronic Integrated Circuit

OEM . . . Original End-product Manufacturer

OIG . . . OSPF Interoperability Group

OLTP . . . On Line Transaction Processing

OLE . . . Object Linking and Embedding

OMG . . . Object Management Group

OMT . . . Ortho Mode Transducer (satellite)

ONU . . . Optical Network Unit

OODB . . . Object Oriented Data Base

OOP . . . Object Oriented Programming

OpAmp . . . OPerational AMPlifier

OPGW . . . overhead OPtical Ground Wave

OPI . . . Open Prepress Interface

OQPSK . . . Offset Quad Phone Shift Keying

ORB . . . Object Request Brokers

ORL . . . Optical Return Loss

OS . . . Operating System

OSF . . . Open Software Foundation

OSI . . . Open Systems Interconnection (ISO 7498)

OSPF . . . Open Shortest Path First

OSS . . . One-Stop Shopping

OTDR . . . Optical Time Domain Reflectometer

 

 

P

 

PABX . . . Private Automatic Branch eXchange

PACS . . . Personal Access Communications Services/System

PAD . . . Packet Assembler Disassembler (X.3,X.25)

PAL . . . Phase Alternating Line (TV)

PAL . . . Programmable Array Logic

PAM . . . Pulse Amplitude Modulation

PAMR . . . Public Access Mobile Radio (SMR)

PAP . . . Password Authentication Protocol

PAX . . . Private Automatic eXchange

PBA . . . Printed Board Assembly

PBX . . . Private Branch eXchange

PC . . . Personal Computer

PC . . . Program Counter

PCB . . . Printed Circuit Board

PCCA . . . Portable Computer and Communications Association

PCI . . . Protocol Control Information

PCI . . . Peripheral Components Interconnect (bus)

PCM . . . Pulse Code Modulation

PCMCIA . . . Personal Computer Memory Card International Association

PCN . . . Personal Communications Network (Europe)

PCS . . . Personal Communications Services (USA)

PCSN . . . Private Circuit Switching Network

PDA . . . Personal Digital Assistant

PDC . . . Personal Digital Cellular (Japan)

PDF . . . Portable Document Format

PDFA . . . Praseodymium Doped Fiber Amplifier

PDH . . . Plesiochronic Digital Hierarchy

PDMA . . . Polarization Division Multiple Access

PDN . . . Public Data Network

PDS . . . Processor Direct Slot

PE . . . PolyEthylene

PECC . . . Partially Error Controlled Connections

PERL . . . Practical Extraction and Report Language

PERM . . . Pre-Embossed Rigid Magnetic

PERT . . . Program Evaluation and Review Technique

PET . . . Positron Emission Tomography

PHIGS . . . Programmer's Hierarchical Interactive Graphics System

PHS . . . Personal Handy phone System (Japan)

PIA . . . Programmable Interface Adapter

PICS . . . Platform for Internet Content Selection

PID . . . Proportional Integral Differential

PIKS . . . Programmer's Imaging Kernel System

PIN . . . Personal Identification Number

PIN . . . Positive Intrinsic Negative (Diode)

PING . . . Packet INternet Grouper (RFC-792)

PIV . . . Peak Inverse Voltage

PKC . . . Public Key Criptosystem

PL/1 . . . Programming Language (version) 1

PLA . . . Programmable Logic Array

PLC . . . Power Line Carrier

PLC . . . Programmable Logic Controller

PLCC . . . Plastic Leadless Chip Carrier

PLD . . . Programmable Logic Device

PMPO . . . Peak Music Power Output

PMOS . . . Positive Metal Oxide Silicon

PMR . . . Public/Private (?) Mobile Radio

PMU . . . Phasor Measurement Unit

PNNI . . . Private Network to Network Interface

PNP . . . Positive-Negative-Positive

PON . . . Passive Optical Network

POP . . . Point Of Presence

POP . . . Post Office Protocol (RFC 1125)

POS . . . Point of Sale

POSIX . . . Portable Operating System Interface (IEEE)

POTS . . . Plain Old Telephone Service

PPD . . . Postscript Printer Description

ppm . . . Parts Per Million

PPP . . . Point to Point Protocol

PPS . . . Packets Per Second

PQFP . . . Plastic Quad Flat Pack

PRA . . . Primary Rate Access (2Mb/s - ISDN)

PRI . . . Primary Rate Interface (ISDN)

PROM . . . Programmable Read-Only Memory

PS . . . Post Script

PSDN . . . Packet Switched Data Network

PSI . . . Packet Switched Interface (DEC)

PSI . . . Peripheral System Interconnect

psi . . . Pounds per Square Inch

PSK . . . Phase Shift Keying

psRAM . . . Pseudo Static Random Access Memory

PSTN . . . Public Switched Telephone Network

PSW . . . Processor Status Word

PTB . . . Phisikalisch-Technische Bundesanstalt (Braunschweig)

PTC . . . Positive Temperature Coefficient

PTM . . . Packet Transfer Mode

PTM . . . Pulse Time Modulation

PTP . . . Peak To Peak (voltage)

PTT . . . Post, Telegraph and Telephone

PU . . . Per Unit

PV . . . Photo Voltaic

PVC . . . Permanent Virtual Circuit/Connection

PVC . . . Poly Vinyl Chloride

PVQ . . . Pyramid Vector Quantization (codification)

PWM . . . Pulsed Wave Modulation

PWM . . . Pulse-Width Modulation

 

 

Q

 

QA . . . Quality Assurance

QAM . . . Quadrature Amplitude Modulation

QBE . . . Query By Example

QC . . . Quality Control

QFP . . . Quad Flat Pack

QHE . . . Quantum Hall Effect

QoS . . . Quality Of Service

QPSK . . . Quadrature/Quaternary Phase Shift Keying

QWIP . . . Quantum-Well Infrared Photo detector

 

 

R

 

 

R&D . . . Research and Development

RACE . . . Research & development for Advanced Communications in Europe

RAD . . . Rapid Application Development

RADAR . . . RAdio Detection And Ranging

RAID . . . Redundant Array of Inexpensive Disks

RAM . . . Random Access Memory

RARP . . . Reverse Address Resolution Protocol

RBOC . . . Regional Bell Operating Company (USA)

RCA . . . Radio Corporation of America

RCL . . . Resistance, Capacitance and inductance(L)

RDAC . . . Remote Data Acquisition and Control

RDBMS . . . Relational Data Base Management System

RELP . . . Residually Excited Linear Predictive

RETMA . . . Radio Electronics Television Manufacturers Association

RF . . . Radio Frequency

RFC . . . Request For Comment (Internet)

RFI . . . Radio Frequency Interference

RG . . . Radio Guide (Hw catalog)

RGB . . . Red Green Blue

RIP . . . Raster Image Processor

RIP . . . Router Information Protocol

RISC . . . Reduced Instruction Set Computer

RJE . . . Remote Job Entry (IBM)

RLAP . . . Radio data Link Adapter Protocol

RLL . . . Radio Local Loop

RLL . . . Relay Ladder Logic

RLL . . . Run-Length Limited (code)

RMA . . . Return Merchandise Authorization

RMON . . . Remote MONitoring

RMS . . . Root Mean Square

ROI . . . Return On Investment

ROM . . . Read-Only Memory

RPC . . . Remote Procedure Call

RPG . . . Report Program Generator

rpm . . . Revolutions Per Minute

RS . . . Recommended Standard (EIA)

RS . . . Remote Station

RS . . . Reed Salomon (code)

RSA . . . Rivest Shamir & Adleman (encryption)

RSIs . . . Repetitive Stress InjurieS

RSVP . . . resource ReSerVation Protocol

RSVP . . . Respondez S'il Vous Plait

RT . . . Room Temperature

RTC . . . Real Time Clock

RTD . . . Resistive Temperature Detector

RTF . . . Rich Text Format

RTOS . . . Real Time Operating System

RTS . . . Request To Send

RTT . . . Round Trip Time

RTU . . . Remote Telemetry Unit

R/W . . . Right of Way

RWM . . . Read-Write Memory

RX . . . Reception

RXD . . . Received Data

 

 

S

 

 

S&H . . . Shipping & Handling

SA . . . Service Availability (tel)

SAL . . . SQL-windows Application Language

SAM . . . Sequential Access Memory

SAP . . . Service Access Point

SAP . . . Services Advertising Protocol (Netware)

SAR . . . Synthetic Aperture Radar

SAT . . . Site Acceptance tests

SARM . . . Set Asynchronous Response Mode (HDLC)

SAW . . . Surface Acoustic Wave

SBC . . . Single Board Computer

SBO . . . Select-Before-Operation (SCADA)

SCADA . . . Supervisory Control And Data Acquisition

SCI . . . Scalable Coherent Interface (IEEE 1596 - 1 Gbit/s)

SCPC . . . Single Channel Per Carrier (Satellite)

SCPI . . . Standard Commands for Programmable Instruments

SCR . . . Silicon Controlled Rectifier

SCS . . . Silicon Controlled Switch

SCSI . . . Small Computer System Interface

ScTP . . . SCreened Twisted Pair (FTP)

SDF . . . System Data Format

SDH . . . Synchronous Digital Hierarchy

SDLC . . . Synchronous Data Link Control

SDMA . . . Space Division Multiple Access

SDSL . . . Symmetric Digital Subscriber Line

SDU . . . Service Data Unit

SEAL . . . Simple and Efficient Adaptation Layer (AAL5 - ATM)

SECAM . . . SEquentiel Couleur Avec Memoire (TV)

SER . . . Sequence of Events Recording

SFTP . . . Shielded Foil Twisted Pair

SGML . . . Standard Generalized Mark-up Language

SHN . . . Self-Healing Networks

SI . . . Systeme International

SIA . . . Satellite Industry Association

SIC . . . Silicon Carbide

SIDF . . . System Independent Data Format

SIMM . . . Single In-line Memory Module

SINAD . . . SIgnal, Noise And Distortion

SIP . . . Single In-line Package

SIS . . . Superconductor-Insulator-Superconductor

SIS . . . Standardiseiringskommissionen I Sverige (Stockholm)

SJTC . . . Single-Junction Thermal Converter

SLED . . . Single Large Expensive Disk (RAID)

SLIP . . . Serial Line Internet Protocol

SM . . . Single Mode (fiber)

SM . . . Surface-Mount

SMA . . . SubMiniature A connector (RF-FO)

SMD . . . Surface-Mounted Device

SMDL . . . Standard Music Description Language

SMDS . . . Switched Multimegabit Data Service

SMF . . . Single Mode Fiber

SMPTE . . . Society of Motion Pictures and Television Engineers

SMR . . . Specialized Mobile Radio

SMT . . . Surface Mount Technology

SMTP . . . Simple Message Transfer Protocol (Internet - RFC 822)

SNA . . . System Network Architecture (IBM)

SNAP . . . Sub-Network Access Protocol

SNI . . . Standard Network Interface

SNMP . . . Simple Network Management Protocol

SNR . . . Signal to Noise Ratio (S/N)

SNRM . . . Set Normal Response Mode (HDLC)

SOE . . . Sequence Of Events (recording)

SOH . . . Start Of Header (char 01 - 01H)

SOHO . . . Small Office - Home Office

SOIC . . . Small-Outline Integrated Circuit (SMD)

SOJ . . . Small-Outline J-lead (SMD)

SOL . . . Small-Outline Leaded (SMD)

SONET . . . Synchronous Optical NETwork

SOS . . .Silicon-On-Sapphire

SPC . . .Stored Program Control

Spec . . .SPECification

SPEC . . . Standard Performance Evaluation Corporation

SPST . . .Single Pole Single Throw (switch)

SPX . . . Sequenced Packet Exchange (layer 4, Netware)

SQE . . . Signal Quality Error (Heartbeat) (Ethernet)

SQID . . . Super conductive Quantum Interference Device

SQL . . . Structured Query Language

SRAM . . . Static Random Access Memory

SRP . . . Suggested Retailer's Price

SRT . . . Source Route Transport (Token Ring)

SRP . . . Source Routing Protocol

SS . . . Spread Spectrum

SS7/CCS . . . Signalling System 7 / Common Channel Signalling (tel)

SSB . . . Single Side Band

SSR . . . Solid State Relay

SST . . . Spread Spectrum Technology

Std . . . STanDard

STB . . . Set Top Box (TV)

STN . . . Super Twisted Nematic (LCD)

STP . . . Shielded Twisted Pair

STP . . . Spanning Tree Protocol (IEEE)

STX . . . Start of TeXt (char 02 - 02H)

SVCs . . . Switched Virtual Circuit

SVD . . . Simultaneous Voice and Data

SVID . . . System V Interface Definition (Unix)

SVP . . . Surge Voltage Protector

SWC . . . Surge Withstand Capability

SWEDAC . . . SWEDish board for technical ACcreditation

SWIFT . . . Society for World-wide Inter-bank Financial Telecommunications

SWR . . . Standing Wave Ratio

 

 

T

 

 

T1 . . . Trunk 1 (1544 bps, 24-channel PCM)

T3 . . . Trunk 3 (44.736 Mb/s)

TAB . . . Tape Automated Bonding

TACS . . . Total Access Communications System

TAPI . . . Telephone Application Program Interface

TCC . . . Telephone Country Code

TCM . . . Trellis Coded Modulation

TCP . . . Tape Carrier Package

TCP . . . Transmission Control Protocol (layer 4)

TCP/IP . . . Transmission Control Protocol/Internet Protocol

TDM . . . Time Division Multiplex

TDMA . . . Time Division Multiple Access

TDR . . . Time Domain Reflectometry

TE . . . Transverse Electric

TEM . . . Transverse Electro Magnetic

TFE . . . TetraFluoro Etilene (Teflon)

TFT . . . Thin Film Transistor

TFTP . . . Trivial File Transfer Protocol

THD . . . Total Harmonic Distortion

THF . . . Tremendously High Frequency

TIA . . . Telecommunications Industries Association

TIFF . . . Tag Image File Format

TM . . . Transverse Magnetic

T&M . . . Test and Measurement

TMN . . . Total/Telecommunications Management Network (ITU-TS M.3010)

TNC . . . Threaded Normalized Connector

TO . . . Transistor Outlook

TOP . . . Technical and Office Protocol (LAN)

TPC . . . Transaction Performance Council

TPF . . . Transaction Processing Facility (IBM)

tpi . . . Tracks Per Inch

TQC . . . Total Quality Control

TQM . . . Total Quality Management

TSOP . . . Thin Small Outline Package (SMD)

TSR . . . Terminate and Stay Resident (DOS)

TTL . . . Transistor-Transistor Logic

TTX . . . TeleTeXt

TTY . . . TeleTYpe

T›V . . . Technische ›berwachungs Verein (Germany)

TVC . . . Thermal Voltage Converter

TWT . . . Traveling Wave Tube

TX . . . Telex

TX . . . Transmission

TXD . . . Transmitted Data

TXT . . . TeXT

 

 

U

 

UART . . . Universal Asynchronous Receiver - Transmitter

UDP . . . User Datagram Protocol (layer 4)

UHF . . . Ultra High Frequency (300-3000 MHz)

UIT . . . Union Internationale des Telecommunications (ITU - Genˆve)

UJT . . . UniJunction Transistor

UL . . . Underwriters Laboratories (USA)

ULS . . . User Location Service

UMTS . . . Universal Mobile Telecommunications System

UNI . . . User to Network Interface

UPC . . . Universal Product Code (bar code)

UPS . . . Uninterruptible Power Supply

UPS . . . United Parcel Service (USA)

UPT . . . Universal Personal Telecommunications

URL . . . Universal Resource Locator (Internet)

USAT . . . Ultra-Small Aperture Terminal

USB . . . Universal Serial Bus (Intel)

USD . . . United States' Dollar

USDC . . . United States' Digital Communications

UT . . . Universal Time

UTC . . . Universal Time Coordinated

UTE . . . Union Technique de l'Electricite (Paris)

UTP . . . Unshielded Twisted Pair (Ethernet)

UUCP . . . Unix to Unix Copy Protocol

UV . . . UltraViolet

 

 

V

 

VAN . . . Value-Added Network

VAR . . . Value Added Reseller

VAR . . . Volt-Ampere Reactive

VAX . . . Virtual Memory eXtension (DEC)

VBR . . . Variable Bit Rate

VC . . . Virtual Circuit

VCA . . . Voltage Controlled Amplifier

VCI . . . Virtual Channel Identifier (ATM)

VCO . . . Voltage Controlled Oscillator

VCR . . . Video Cassette Recorder

VDE . . . Verband Deutscher Elektrotechniker (Germany)

VDR . . . Voltage Dependent Resistor

VDSL . . . Very-high-rate Digital Subscriber Line

VDT . . . Video Display Terminal

VDU . . . Video Display Unit

VESA . . . Video Electronics Standards Association

VF . . . Voice Frequency

VGA . . . Video Graphics Adapter

VHDL . . . VHSIC Hardware Description Language

VHF . . . Very High Frequency (30-300 MHz)

VHS . . . Video Home System

VHS-C . . . Video Home System Compact

VHSIC . . . Very High Scale Integrated Circuit

VI . . . Virtual Instrument

VIA . . . Versatile Interface Adapter

VINES . . . VIrtual NEtwork Software (Banyan)

VLB . . . VESA Local Bus (VL bus)

VL bus . . . VESA Local BUS (VLB)

VLIW . . . Very Long Instruction Word

VLSI . . . Very Large Scale Integration

VLM . . . Virtual Loadable Module (Netware)

VMEbus . . . Versa Module Eurocard BUS (IEEE 1014)

VMS . . . Virtual Memory System (DEC)

VMS . . . Voice Message System

VOD . . . Video On Demand

VOR . . . Vhf Omnidirectional Range

VOX . . . Voice Operated relay

VP . . . Virtual Path

VPI . . . Virtual Path Identifier (ATM)

VPN . . . Virtual Private Network

VR . . . Virtual Reality

VR . . . Voltage Regulator

VRAM . . . Video Random Access Memory

VRC . . . Vertical Redundancy Check (parity)

VRMS . . . Volts Root Mean Square

VSAT . . . Very Small Aperture Terminal

VSB . . . Vestigial Side Band

VSELP . . . Vector Sample/Sum Excited Linear Prediction (code-Motorola)

VT . . . Video Terminal (DEC)

VT . . . Virtual Terminal

VTR . . . Video Tape Recorder

VU . . . Volume Unit (tel)

VXI . . . Vmebus eXtensions for Instrumentation

 

 

W

 

W3 . . . World Wide Web (WWW)

W3C . . . World Wide Web Consortium

WACS . . . Wireless Access Communications System

WAN . . . Wide Area Networks

WAN . . . Wide Area Information Service

WARC . . . World Administrative Radio Conference

WLL . . . Wireless in the Local Loop

WDM . . . Wave Division Multiplexing

WEC . . . World Energy Council

WMF . . . Windows Meta File

wpm . . . Words Per Minute

WORM . . . Write Once, Read Many

WRU . . . Who aRe yoU

WWAN . . . Wireless Wide Area Networks

WWN . . . World Wide Net

WWW . . . World Wide Web

WYSIWYG . . . What You See Is What You Get

 

 

X

 

 XLPE . . . cross Linked PolyEthylene

XMS . . . eXtended Memory Specification (1024kB)

XNS . . . Xerox Network Specification

XOR . . . eXclusive OR

XTP . . . eXpress Transfer Protocol

XYZ . . . color description (CIE)

 

 

Y

 

YIQ . . . Y(luminance) Intensity Q(crominance) (color NTSC)

YAG . . . Yttrium Aluminum Garnet

 

 

Z

 

ZD . . . Zero Defects

ZIF . . . Zero Insertion Force