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Acronyms & Abbreviations List
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A A ampere A angstrom A/D analog to digital AAIC active addressing integrated circuit AAL ATM adaptation layer AAL2 ATM adaptation layer 2 ABI application binary interface ABT Advanced BiCMOS Technology logic ABTE Advanced BiCMOS Technology/Enhanced logic ABTH Advanced BiCMOS Technology logic with Bus-Hold AC Advanced CMOS logic ac alternating current ACATS Advisory Committee on Advanced Television Service (standard) ACF auto-correlation function ACK acknowledge ACM Association for Computing Machinery ACPI Advanced Configuration and Power Interface [spec] ACT Advanced CMOS logic with TTL-compatible inputs ADC analog-to-digital converter ADDSP application-specific digital signal processor ADM add/drop multiplexers ADPCM adaptive differential pulse-code modulation ADSL asynchronous/asymmetrical digital-subscriber loop line AEA American Electronic Association (Washington, DC) AEA American Engineering Association AEEC Airline Electronic Engineering Committee (part of ARINC) AF audio frequency AFC audio-frequency control AFC automatic frequency control AFE Analog front end AGC automatic gain control AHDL analog hardware-description language (software) Ahr ampere-hour Ahr ampere hour AI artificial intelligence AIN advanced intelligent network (telecommunications) ALGOL algorithmic language ALN adaptive-logic network (neural) ALU arithmetic-logic unit AM active matrix (liquid-crystal display) AM amplitude modulation AMLCD active-matrix liquid-crystal display AMPS Advanced Mobile Phone Service (worldwide standard) AN Access Network ANSI American National Standards Institute (New York) AP arithmetic processor API application-programming interface APM advanced power management AQL acceptable quality level ARIB Association of Radio Industries and Businesses ARINC Aeronautical Radio Inc (airline consortium) ARM advanced RISC machine (computer) ARO after receipt of order ARPA Advanced Research Projects Agency (US government) ASCII American National Standard Code for Information Interchange ASIC application-specific integrated circuit ASME American Society of Mechanical Engineers ASPI advanced SCSI programming interface ASR automatic speech recognition ASSP application-specific signal processor ASTM American Society for Testing and Materials At ampere turn ATA ATbus-attachment (mobile version of IDE) ATAPI AT Attachment Packet Interface (IDE standard) ATE automatic test equipment ATG automatic test generation ATM asynchronous transfer mode (communications) ATPG automatic test-program/pattern generation ATV advanced television (high-definition television) avg average AVI advanced vehicle identification AVI Analog VHDL International (standards group) AWG American wire gauge (standard) AWG arbitrary-waveform generator GO TO TOP
B B bel B-CDMA broadband code division multiple access (communications) B8ZS bipolar eight zero substitution BALUN balanced-to-unbalanced Basic beginners all-purpose symbolic instruction code (software) BAW bulk acoustic wave (HF device) BBS bulletin board system (software) BBT bit-block transfer BC backward compatible (coding) BCCH broadcast control channel BCD binary-coded decimal BDD binary decision diagram BECN Backward Explicit Congestion Notification BEI back-scattered electron imaging BER bit error rate BERT bit error rate/ratio test BFSK binary frequency-shift keying BFSL best-fit straight line (error measurement) BGA ball-grid array (packaging) BiCMOS bipolar complementary metal-oxide semiconductor BIOS basic input/output system (computer) BIP bit-interleaved parity (communications) Bit-BLT bit-block line transfer BITE built-in test equipment BJT bipolar junction transistor BLAS basic linear-algebra subprogram (software) BLIP background-limited infrared photodetector BLT block transfer BMC Baseboard Management Controller BMP bit-mapped (graphics file format) BMU bit-manipulation unit BMV Bundesministerium fur Verkehr (German Ministry of Transportation) BNC baby n connector BOM Bill of Materials BOOTP Bootstrap Protocol (Internet) BORSCHT battery-feed, overvoltage, ringing, supervision, coding, hybrid and test (functions of all-inclusive telecommunications device BPF band-pass filter BPSK binary phase-shift keying BPU boundary-processing unit BPV bipolar violation BSC bisynchronous communication BSDL boundary-scan description language (software) BSI British Standards Institution BSS broadcast satellite service (DBS) BSS basic service set (communications) BTU British thermal unit BWA broadband wireless access GO TO TOP
C C Celsius CA certificate authority CAC Connnection address control CAD computer-aided design CAE computer-aided engineering CAGR compound annual growth rate CAI Common Air Interface (European) CAM content-addressable memory CAM computer-aided manufacturing CAMAC computer-aided measurement and control CAP competitive access provider (vs RBOC) CART classification and regression tree (neural network) CASCADE Chip Architecture for Smart Cards and (Portable Intelligent) Devices CASE computer-aided software engineering CAT computer-aided test CAT computerized axial tomography (medical diagnostics) CATV community antenna TV CB complementary bipolar (IC) CBEMA Computer & Business Equipment Manufacturers Association CBGA ceramic ball-grid array (IC) CBIC complementary bipolar integrated circuit CBR constant bit rate CC/VL constant current, voltage limited (power supply) CCC ceramic chip carrier CCD charge-coupled device CCF cross-correlation function CCFT cold-cathode fluorescent tube CCGA ceramic column grid array (IC) CCIR Consultative Committee, International Radio (see ITU) CCITT Consultative Committee on International Telephone and Telegraph CCN Center for Civic Networking (on Internet) CCPCH Common control physical channel CCS common channel signaling (telecommunications) CCTV closed-circuit TV CCW counterclockwise CD collision detection cd candela cd/ft2 candelas per square foot cd/m2 candelas per square meter CDF cumulative distribution function CDI compact-disk interactive CDMA code division multiple access (digital communications standard) CDPD Cellular Digital Packet Data (Consortium standard) CDRAM cache dynamic random-access memory CEG Consumer Electronics Group (of EIA) CELP code-excited linear prediction (speech coding) CEPS color electronic prepress system (DTP) CERMET ceramic metal (element) CFAR constant false-alarm rate (radar) CFB configurable function block CFC chlorofluorocarbon CFC current-to-frequency converter CFI CAD Framework Initiative (standard) cfm cubic feet/minute cg centigram cgs centimeter-gram-second CHINT charge-injected transistor CIC CEBus Industry Consortium CID charge-injection device CiDSL Consumer-installable DSL CIE computer-integrated engineering CIF Common Intermediate Format (ITU video standard) CIIL Common Instrument/Control Intermediate Interface Language CIM computer-integrated manufacturing CISC complex-instruction-set computing CIX Commercial Internet Exchange (consortium, Falls Church, VA) CLCC ceramic leadless chip carrier CLIW Customizable long instruction word CLP cell-loss priority (network) cm centimeter cm3 cubic centimeter CMA ceramic multilayer actuators CMIP common management-information protocol CML current-mode logic (circuit CMOS complementary metal-oxide semiconductor CMR common-mode ratio CMRR common-mode rejection ratio CMS connection-management system (communications) CMS customer mobility space (communications) CMV common-mode voltage CMVR common-mode voltage ratio CMY cyan, magenta, yellow (printing colors) CNC computerized numerically controlled (machine) CNR Communication Network Riser (card) CO central office (telecommunications) COB chip on board Cobol Common Business Oriented Language (software) COCB chip-on-chip ball (grid array) (packaging) codec coder/decoder (two-way communications) codec coder-decoder COM Common Object Model (software standard) COMINT communications intelligence CORBA Common Object Request Broker Architecture (of OMG) CoS Class of Service COSE Common Open Software/Systems Environment (Unix) COTS commercial off the shelf CP Customer Premises CPA Center for Policy Alternatives (on the Internet) CPE Customer premises equipment CPGA ceramic pin-grid array (IC) cpi characters per inch CPLD complex programmable-logic device cps characters per second cps cycles per second CPU central processing unit CQFP ceramic quad flatpack (IC) CRC cyclic redundancy check CRT cathode-ray tube CSA Canadian Standards Association csc cosecant CSM cell-site modem CSMA/CD carrier sense multiple access/collision detection (LAN) CSO composite second order CTE coefficient of thermal expansion CTIA Cellular Telecommunications Industry Association CTIA Computing Technologies Industry Association CTS clear to send CW clockwise CW continuous wave GO TO TOP
D DA distributor/arbitor D-S direct synthesis D/a digital-to-analog DAA data-access arrangement DAA Direct Access Arrangement DAB data-acquisition board DAB digital audio broadcasting DAC digital-to-analog converter DAP data-acquisition processor DAQ data acquisition DARPA Defense Advanced Research Projects Agency (US government) DAS data-acquisition system DAV digital audio video Davic Digital Audio-Visual Council dB decibel dBm dB power (acoustics) dBm decibel referred to 1 milliwatt DBMS database-management system DBPSK differential binary phase-shift keying (communications) DBS direct-broadcast satellite (TV) dBV decibel volts dBV decibel referred to 1 volt dBW decibel referred to 1 watt dc direct current dc/dc dc to dc DCASP digitally controlled analog-signal processing DCC data communications channel DCE data-communications equipment DCE Distributed Computing Environment (OSF) DCH dedicated channel DCI display-control interface DCR digital direct converson receiver DCS digital communications system DCT discrete cosine transform DDC display data channel (VESA) DDE dynamic data exchange (software) DDI device-driver interface DDN NIC Defense Data Network, Network Information Center (Internet) DDS direct digital synthesis DDTCP dual tape-carrier package (IC) DECT Digital European Cordless Telephone/Telecommunications (standard) DES Data Encryption Standard DESC Defense Electronic Supply Center (Dayton, OH) DFM design for manufacturability DFT design for test DFT discrete Fourier transform DIC differential interference contrast (optical inspection) DIE Die Information Exchange (IC) DIL dual in-line (IC package) DIMM dual in-line memory module DIN Deutsche Industrial Norms (German standards agency) DINOR dual-voltage NOR DIP dual in-line package DKE Deutsche Electrontechnische Kommission im DIN und VDE (Germany) DLC Digital Loop Carrier DLL dynamic-link library DMA direct-memory access DMD digital micromirror device (display) DMM digital multimeter DMOS double-diffused metal-oxide semiconductor DMT discrete multitone (modulation) DNL differential nonlinearity (ADC performance) DNS Domain Name System (DNC) (Internet) DOCSIS Data-Over-Cable Service Interface Specification DOD Department of Defense (US government) DOE Department of Energy (US government) DOS disk operating system DPAK small power transistor package (for surface mount) DPCCH dedicated physical control channel DPCH dedicated physical channel DPDCH dedicated physical data channel dpdt double-pole, double-throw dpi dots per inch DPM digital panel meter DPMS display power-management signaling (VESA standard) dpst double-pole, single-throw DQPSK differential quadrature phase-shift keying DRAM dynamic random-access memory DRO dielectric-resonator oscillator DS downstream DSL digital subscriber loop DSLAM DSL Access Multiplexing DSM-CC Digital Storage Media Command and Control (group) DSO digital storage oscilloscope DSP digital signal processing DSR data set ready DSSS direct-sequence spread spectrum (communication) DTAB demountable tape-automated bonding (IC) DTAD digital telephone-answering device DTE data-terminal equipment DTI Department of Trade and Industry (British government) DTL diode transistor logic DTMF dual tone multifrequency (communications) DUT device under test DVI digital video interactive DVM digital voltmeter DVP digital video processor DWDM dense wavelength division multiplexing DWT discrete waveform transform (video compression) GO TO TOP
E E-O electro-optical EAN European Article Number EAROM electrically alterable read-only memory EBCDIC extended binary-coded-decimal interchange code ECC error-correction code ECL emitter-coupled logic ECM electronic countermeasure (radar) ECN epoxy cresol nevolac (semiconductor-case resin) ECO engineering change order EDA electronic-design automation EDAC error detection and correction (circuit) EDD enhanced disk drive EDFA Erbium-doped fiber amplifiers EDGE Enhanced Data GSM Environment EDI electronic data interchange EDIF Electronic Design Interoperability/Interchange Format (schematic software) EDM electrical-discharge machining EDO extended data out (computer architecture) EDS extended data service EEPROM electrically erasable PROM EES Escrow Encryption Standard EFCI Explicit forward congestion indicator EFF Electronic Frontier Foundation (communications standard) EIA Electronic Industries Association (Washington) EIA Environmental Industries Association EIAJ Electronics Industries Association of Japan EIF Electronics Industries Foundation EISA extended industry-standard architecture (PC bus) EL electroluminescent (display) ELF extremely low frequency ELINT electronic intelligence EMC electromagnetic compatibility EMDP enhanced MDSL data pump EMF electromagnetic field EMI electromagnetic interference EMP electromagnetic pulse EMS expanded-memory specification (PC) endec encoder-decoder (LAN standard) ENOB effective number of bits (analog-to-digital conversion) ENR excess noise ratio EPD early packet discard EPLD erasable programmable-logic device EPRI Electric Power Research Institute EPROM erasable programmable read-only memory EPS extended Postscript (image format) ER explicit rate ESD electrostatic discharge ESDA electronic system design automation ESDI enhanced small drive/device interface ESF extended super-frame (communications) ESL equivalent series inductance ESNUG E-Mail Synopsys Users Group ESR equivalent series resistance ESS environmental stress screening ESS electronic switching system ETC enhanced throughput cellular (protocol) ETDMA extended time-division multiple access (communications) ETF equalized transfer function ETS equivalent time sampling (digital storage oscilloscope) ETS European Telecommunications Standard ETSI European Telecommunications Standards Institute (of ISO) EUT equipment under test eV electron volt EW electronic warfare ExCA Exchangeable Card Architecture ext extension GO TO TOP
F F Farad f frequency f femto F Fahrenheit F-H frequency hopping (communications) F/V frequency-to-voltage (converter) F/V frequency to voltage FALU floating-point arithmetic-logic unit FAQ frequently asked question FAS frame-alignment signal (communications) FASIC function- and algorithm-specific integrated circuit FAST flexible accelerated stress test FAT file-allocation table (digital disk format) FC Fibre Channel (communication) fc foot candle FCA Fibre Channel Association FCC Federal Communications Commission (Washington, DC) FCSI Fibre Channel Systems Initiative FDDI fibre distributed data interface (communications) FDMA frequency-division multiple access (communications) FDX full-duplex (communications) FEA field-emitter array (display) FEBE far-end-block error (communications) FEC flexible etched circuits FED field-emission/emitter display FEI Federation of the Electronics Industry (UK) FET field-effect transistor FFS Flash File Standard (PCMCIA) FFT fast Fourier transform FHSS frequency hopping spread spectrum (communications) FIFO first-in, first-out (memory) FIR finite impulse response (filter) FISO fast-in, slow-out (circuit) FIT failures in time (testing) FIT fault-isolation test fL footlambert flops floating-point operations per second FM frequency modulation FMCW frequency-modulated continuous wave (radar) FMU floating-point multiplier-divider-square-root unit FO fiber optic FORTRAN formula translation (software language) FPCB field-programmable circuit board FPGA field-programmable gate array FPIC field-programmable interconnect chip FPID field-programmable interconnect device FPLA field-programmable logic array FPN floating-point number FPU floating-point unit (circuit) FQFP fine-pitch quad flat pack FR full rate (communications) FRAM ferroelectric random-access memory FRED fast-recovery epitaxial diode (rectifier) FRF frequency-response function FS full scale FSK frequency-shift keying (communications) FSM finite state machine FSS fixed satellite service (DBS) ft foot/feet ft-lb foot pound-force ft/minute feet per minute ft/sec feet per second ft3/sec cubic feet/second FTL Flash Translation Layer (PCMCIA standard) FTP File Transfer Protocol (Internet) VC F/V converter GO TO TOP
G G giga g grams g gravity acceleration GaAs gallium arsenide GATS General Agreement on Trade in Services (international) GATT General Agreement on Tariffs and Trade (international) Gbit gigabit Gbyte gigabyte GCA gain-controlled amplifier GDI graphics-drive interface GFC generic flow control (ATM) GFM graphics file manager GFSK gaussian frequency-shift keying (communications) GHz gigahertz GIF graphic image file GMSK gaussian-filtered minimum-shift keying GOPS giga-operations per second GPC Graphics Performance Characterization (Committee) GPIB general-purpose interface bus GPL graphical programming language GPRS General Packet Radio Service GPS Global Positioning System/Satellite GQFP guard-ring quad flatpack GSM Groupe Speciale Mobile/Global System for Mobile GTL Gunning transceiver logic GUI graphical user interface GO TO TOP
H H henry HCPLD high-capacity programmable-logic device HD high-definition (TV) HDD hard-disk drive HDL hardware-description language HDLC hardware-description language C HDLC High Level Data Link Control (ISO standard) HDS hardware-design system HDSL high-bit-rate digital-subscriber line HDTMOS high-density-technique metal-oxide semiconductor HDTV high-definition television HDX half duplex (communications) HEC head-error control HEMT high electron-mobility transistor HiperLAN high-performance local-area network (communications) HIPOT high potential (testing) HIPPI high-performance parallel interface HLL high-level language (software) HLR home-location register (personal communications computer) HLUT half look-up table hp horsepower HPC hand-held PC HR half-rate (communications) HSL hue, saturation, luminescence (color graphics) HSM hierarchical storage management HSOP high-power small-outline package HSTP High Speed Transport Protocol HTML Hypertext Markup Language (WWW-Internet) HTRB high-temperature reverse bias (burn-in testing) HTS high-temperature superconductor HTTL high-power transistor-to-transistor logic HV high voltage Hz hertz GO TO TOP
I I/O input/output I2L integrated injection logic IA instrument amplifier IAB Internet Activities Board IAC interapplication communication (protocol) IC integrated circuit ICE in-circuit emulator ICR in-circuit reconfiguration ID identification ID inside diameter IDAPI integrated database application programming interface IDC insulation displacement connector IDC insulation displacement contact IDE intelligent drive electronics (disk) IDE integrated device electronics IDEA International Data Encryption Algorithm IDFT inverse discrete Fourier transform IDL interconnect description language IEC International Electrotechnical Commission (Geneva) IEE Institution of Electric Engineers (UK) IEEE Institute of Electrical and Electronic Engineers IES Institute of Environmental Sciences (Mount Prospect, IL) IETF Internet Engineering Task Force IF intermediate frequency IFAC International Federation of Automation Control IFFT inverse fast Fourier transform IGBT insulated/isolated-gate bipolar transistor IISP Information Infrastructure Standards Panel (of ANSI) IMD intermodulation distortion IMTS Improved Mobile Telephone Service in. inch inch inch in.3 cubic inch INL integral non-linearity (ADC performance) INMARSA International Maritime Satellite (mobile communications consortium) INNS International Neural Network Society (Berkeley, CA) INTELSAT International Telecommunications Satellite (mobile communications consortium) IP Internet Protocol IPC Institute for (Interconnecting and) Packaging (Electronic) Circuits (Lincolnwood, IL) IPMC industrial process measurement and control ips inch per second IR insulation resistance IR infrared IRD integrated receiver-decoder (for DBS) IrDA Infrared Data Association IRF impulse response function IRQ interrupt request (software) IS Industry Standard of Architecture (PC bus) IS interconnect synthesis ISA industry standard architecture ISA Instrument Society of America ISDB integrated services digital broadcasting ISDN integrated services digital network (communications) ISHM International Society for Hybrid Microelectronics ISM industrial, scientific, and medical (applications/bands) ISO International Standards Organization ISP in-system programmability IVDS interactive video data service IVHS Intelligent Vehicle Highway System IVMS In-Vehicle Multiplexing System (standard) GO TO TOP
J J joule JDC Japanese digital cellular (system) JDS Japanese Digital Standard (telecommunications) JEDEC Joint Electronic Device Engineering Council JEIDA Japan Electronics Industry Development Association JESSI Joint European Semiconductor Silicon Initiative JFET junction field-effect transistor JISC Japanese Industrial Standards Committee JIT just-in-time (manufacturing, staffing, etc) JMOS junction metal-oxide semiconductor JPEG Joint Photographic Experts Group (video standard) JTACS Japanese Total Access Communications System JTAG Joint Test Action Group JTEC Japanese Technology Evaluation Center JTFA joint time-frequency analysis (DSP) GO TO TOP
K K Kelvin k kilo K k[uom] kilohm kbit kilobit kbps kilobits per second kbyte kilobytes kg kilogram KGD known-good die (semiconductor) kHz kilohertz km kilometer km/hour kilometers per hour KSIA Korean Semiconductor Industry Association KSR keyboard send, receive kV kilovolt kVA kilovoltampere kW kilowatt kWhr kilowatthour GO TO TOP
L L lambert LAB logic array block LAN local-area network LAP large-area processing (reference multichip module IC) laser light amplification by stimulated emission of radiation LC inductance-capacitance LC liquid crystal (display) LCC leadless chip carrier LCD liquid crystal display LCI line-conducted interference (telecommunications) LCPGA low-cost pin-grid array LCR inductance-capacitance-resistance LCR inductance-capacitance-resistance (meter) LDMOS lateral double-diffused MOS LED light-emitting diode LEO low-earth-orbit LES LAN emulation services (communications) LF low frequency (30 to 300 kHz) LGA land grid array (IC) LIF low insertion force (socket) LIFO last-in, first-out LIGBT lateral insulated-gate bipolar transistor LIM Lotus-Intel-Microsoft (EMS spec committee) LIMS laboratory information management system LIT logic integrity test LLC Limited Liability Corporation LLL Lawrence Livermore Laboratory (Livermore, CA) lm lumen lm/ft2 lumen per square foot lm/m2 lumen per square meter lm/W lumen per watt ln logarithm, natural LNA low noise amplifier LND low noise band LO local oscillator LOF loss-of-frame (communications error) log logarithm LPAC London Parallel Applications Centre (UK) LPF low-pass filter lpi lines per inch lpm lines per minute LPM Library of Parameterized Modules/Macros (standard) lps lines per second LRM language reference manual LSB least significant bit LSI large scale integration LSR least-squares regression (curve-fit) LSSD level-sensitive scan design (testing) LSTTL low-power Schottky transistor-to-transistor logic LUT look-up table LVDS low voltage differential signal LVDT linear-velocity displacement transformer (transducer) LVTTL low-voltage transistor-transistor logic GO TO TOP
M M mega m meter Msamples/sec megasamples per second M-Quad metal (body) quad (flat-pack) m/sec meter per second M[uom] megohm m3 cubic meter m3/sec cubic meter per second MAC multiply-accumulate (computer operations) MAC media access control (communications protocol) MAN metropolitan area network (communications) MAP Manufacturing Automation Protocol MAP modular arithmetic coprocessor MAPI messaging application programming interface maser Microwave amplification by stimulated emission of radiation MATE Modular Automatic Test Equipment (standard) Mbit megabits Mbps megabits per second Mbyte megabytes MCA Micro-Channel Architecture (IBM) MCC Microelectronics and Computer Technology Center (Austin, TX) MCM multichip-module (IC design) MCT MOS-controlled thyristor MCU microcontroller unit MD minidisk MDSP microwave digital signal processor MESC Molecular Equipment Subcommittee for Communications (of SEMI) MESFET metal-epitaxial semiconductor field-effect transistor MFM modified frequency modulation MFP mini-flat pack (Japanese SOIC packaging) MGCP Media Gateway Control Protocol MHDL Mimic hardware description language (microwave) MHz megahertz MIB management information base MIDI musical instrument digital interface (multimedia) MII media independent interface MIM metal-insulator-metal (diode) MIMD multiple-instruction, multiple-data (path-DSP) MIME Multipurpose/Multimedia Internet Mail Extension Mimic microwave-millimeter wave integrated circuit MIP mixed integer program MIPS million instructions per second MIS management information system MITI Ministry of Trade and Industry (Japan) MMDS multichannel multipoint distribution service MMI man-machine interface MMIC monolithic microwave integrated circuit MMS modular measurement system MMU memory-management unit (microprocessor) MNOS metal-nitride oxide semiconductor MO magneto optical disk storage MOCVD metal-organic chemical vapor decompression (LED) modem modulator-demodulator (telecommunications) MOPS million operations per second MOS metal-oxide semiconductor MOSFET metal-oxide semiconductor field-effect transistor MOSIGT metal-oxide semiconductor insulated-gate transistor MOTS military off-the-shelf (procurement) MOV metal-oxide varistor MPEG Moving Picture Experts Group (standard) MPFM motion picture file manager MPLS multi-protocol label switching MPP massively parallel processor MPU microprocessor unit MQFP metric quad flat-pack (packaging) MR magnetoresistive (disk head) MRI magnetic resonance imaging MSA metropolitan statistical area (cellular communications) MSB most significant bit MSDSL Multirate Symmetric Digital Subscriber Line MSDU media-access control service data unit (communications) MSI medium-scale integration MSK minimum shift keying (communications) MSM mobile station modem MSS mobile satellite system MTBF mean time between failures MTD moving-target detection (radar) MTD memory technology driver MTFT multilayer thick-film technology MTI moving-target indicator (radar) MTP-2 Message Transfer Parts MTTF mean time to failure MTTR mean time to repair mux multiplexer MVP multimedia video processor MW megawatt MXI Multiplatform extension for Instrumentation (bus standard) GO TO TOP
N N-AMPS narrowband Advanced Mobile Phone Service NAB National Association of Broadcasters (Washington, DC) NACC North American Calibration Cooperative (US-Canada) NACME National Action Council for Minorities in Engineering NADTP National Association of Desktop Publishers (Topfield, MI) NATA North American Telephone Association NAV network allocation vector (communications) NC numerical control (machine) NCD nonlinear control design NCE Nomadic Computing Environment (portable PC standard) NCMS National Center for Manufacturing Sciences (Ann Arbor, MI) NCO numerically controlled oscillator NCSA National Center for Supercomputing Applications (University of Illinois, Champaign-Urbana, IL) NDR negative differential resistance (transistor) NEMA National Electrical Manufacturers Association NEMP nuclear electromagnetic pulse NEP noise equivalent power NFS Network File System (Unix standard) NFS network file systems NIC network interface card NII National Information Infrastructure NIM network-interface module (standard) NIM National Instrumentation Module (standard) NiMH nickel-metal-hydride (battery) NIST National Institute of Standards and Technology (Washington, DC) NMOS N-channel metal-oxide semiconductor NMRR normal-mode rejection ratio NNI network-network interface (standard) NNI network node interface NOS network operating system NOSC Naval Ocean Surveillance Center NRE nonrecurring engineering NRF nonvolatile RAM file-manager nrt-VBR non-real-time variable bit rate NRZ nonreturn to zero NSB National Science Board NSF National Science Foundation NTC negative temperature coefficient NTDS National TV Design Standards NTSC National TV Systems Committee (standard) NTTC National Transportable Telecommunications Capability (COMSAT) NTV nonlinear thickness variation (IC wafer) NVLAP National Voluntary Laboratory Accreditation Program NVRAM nonvolatile random-access memory GO TO TOP
O OAM operations, administration, and maintenance OAM&P operations, administration, maintenance, and provisioning OC optical carrier OCR optical character reader/recognition OCXO oven controller crystal oscillator OEM original equipment manufacturer OFDM orthogonal frequency division multiplexing (communications) OIDA Optoelectronics Industry Development Association OLE object linking and embedding (Microsoft software standard) OMF Open Model Forum (of EDA) OMG Object Management Group (software standard OMI Open Microprocessor Initiative (European) ONU Optical Network Units OO object oriented OOF out-of-frame (communications error) OOP object-oriented programming OOT object-oriented technology (software) OPC Open GL Performance Characterization (Committee) OQPSK offset-quadrature phase-shift keying (communications) ORB object request broker (CORBA) OS operating system (computer) OSA Optical Society of America OSF Open Software Foundation OSI Open Systems Interconnection (communications) OSR oversampling ratio (ADC) OSRA Office Systems Research Association (Springfield, MI) OTA Office of Technological Assessment (of US Congress) OTDR optical time-domain reflectometer OTS off-the-shelf OVI Open Verilog International (organization) OVP over-voltage protection (power supply) OVSF orthogonal variable spreading factor GO TO TOP
P p-p peak-to-peak P/I packaging and interconnecting P4 photolithographic pattern plated probe Pa Pascal pA picoampere PA-RISC Precision Architecture - Reduced Instruction Set PA/R peak-to-average ratio PABX private access/area branch exchange PAC pad array carrier PAD packet assembler/disassembler PAD programmable address decoder PAD bus processor address data bus PAL phase-alternation line; French TV spec PALC plasma-addressed liquid crystal (display) PAM pulse-amplitude modulation PARD periodic and random deviation PBA printed board assembly PBGA plastic ball-grid array PBT chemical designation like PBC, etc PBX private branch exchange PC personal computer pC picocoulomb pc board (PCB) printed-circuit board PC-QFP printed-circuit-based quad flat pack PCC Personal Communication Computer (European) PCF point coordination function PDH Personal Digital Communications PCI Peripheral Component Interconnect [bus] PCI SIG PCI Special Interest Group PCIA Personal Communications Industry Association PCL printer control language PCM pulse-code modulation PCMCIA Personal Computer Memory Card International Association PCN personal communications network PCOM private communications PCR plastic chip carrier PCS plastic clad silica PCS personal communications service/system PCU peripheral control unit PD pulsed doppler (radar) PDA personal digital assistant (portable computing) PdAg palladium silver PDC personal digital cellular (telecommunications system) PDEF physical design exchange format PDH plesiochronous-digital hierarchy (communications network) PDI perspective dark-field imaging (semiconductor wafer inspection) PDIAL public-access dial-up (Internet provider) PDIF P-CAD data interchange format PDIP plastic dual-in-line package PDM product data management PDP plasma display panel PDT prototype debug tool (Tektronix) PDU protocol data unit PEBB power electronics building block PECC partially error-controlled connections PECL positive/pseudo emitter-coupled logic PECVD plasma-enhanced chemical vapor deposition PEEL Programmable Electrically Erasable Logic PEM privacy enhanced mail (Internet) PEP Programmable Electronics Performance (Corp standard) pF picofarad PF power factor PFC power-factor correction (power supply) PFM pulse frequency modulation (battery charging) PGA pin-grid array PGA programmable gain amplifier PGD "pretty good die" (IC production) PGP "pretty good privacy" (Internet encryption algorithm) PHEMT pseudomorphic high electronic mobility technology (FET process) PHP Personal Handyphone (Japanese standard) PHP power hybrid package PHY physical layer PIC parallel intereference cancellation PICMG PCI Industrial Computer Manufacturers Group PID proportional-integral differential control loops PIN p-n junction with isolation region PIND particle impact noise detection PIP procedural interface protocol PIV peak inverse voltage pixel picture element pJ picojoule PKI Public Key Infrastructure PLA Programmable Logic Array; Signetics trademark PLACE PEEL Architectural Compiler/Editor PLCC plastic leaded chip carrier PLCP physical layer convergence procedure PLD programmable logic device PLDC polymer-dispersed liquid crystal (display) PLI Programming Language Interface (OVI) PLL phase-locked loop PLS programmable logic sequencer PM phase modulation PMA post-metallization anneal PMC PCI Mezzanine Card (standard) PMCM plastic multichip module PMD physical media dependent PMOS p-type metal-oxide semiconductor PMP post-metal programming PMT photo-multiplier tube PMU parametric measurement unit PN processor node PNN probabilistic neural network pnp p-type n-type p-type PnP Plug and Play (ISA standard) POP point of presence (Internet) POP Post Office Protocol (Internet) PoS packet-over-SONET POSIX portable operating system interface - Unix POST power-on self tests POT plain-old telephony POTS plain-old telephone service (system?) PPGA plastic pin grid array PPI plan position indicator (radar) ppm part(s) per million PPP Point-to-Point Protocol (Internet) pps pulses per second PPT precision pad technology PQFP plastic quad flat pack (IC) PRACH physical random access channel PRBA Portable Rechargeable Battery Association PRBS pseudorandom bit stream PREP PowerPC reference platform PRF pulse repetition frequency (radar) PRML partial-response maximum-likelihood (disk storage) PRN pseudo-random noise PRO Precision RISC Organization PRS pattern recognition system PSD power spectral density psec picosecond PSG phospho-silicate glass psi pound(s) per square inch psia pound(s) per square inch absolute psig pound(s) per square inch gauge PSK phase-shift keying PSOP power small outline package PSP programmable signal processor PSPDN packet switched public data network PSRAM pseudo-static RAM PSRR power-supply rejection ratio PSTN Public Switched Telephone Network PtAu platinum gold PTC positive temperature coefficient PTE path terminating equipment PTF polymer-thick-film PTO Patent and Trademark Office (US Government) pV picovolt PVC polyvinyl-chloride PVD peak voltage detect/physical vapor deposition pW picowatt PWM pulse-width modulation GO TO TOP
Q Q quality factor (of a resonant circuit) QAM quadrature amplitude modulation QAS Quick Arbitrate and Select QC quality control QCIF quarter-common intermediate format QE quantum efficiency (photomultiplier) QFB quad flat butt-leaded package QFP quad flat pack QIC quarter-inch cartridge (storage) QML qualified manufacturers list QoS quality of service (communications) QPL qualified part/product list (procurement) QPL Qualified Products List QPM quasi-phase-matched QPSK quadrature phase-shift keying (communications) QSM queued serial module QSOP quarter-size outline package QTAG Quality Test Action Group (communications) QTCP quad tape carrier package QUIP quad in-line package GO TO TOP
R RACH random access channel rad radian RADSL rate adaptive digital subscriber line RAID redundant array of inexpensive disks RAM random access memory RAMDAC random access memory, digital-to-analog converter (combination) RAS row address strobe RAS remote access service (network) RASSP Rapid Prototyping of Application Specific Signal Processors (ARPA project) RAVE real-time audio/visual environment RBOC regional Bell operating company RC resistance-capacitance RC-4 Rivest's Cipher RCC rectangular chip carrier RCM release complete message RDBMS Relational Data Base Management System RDRAM RAMbus-DRAM READ relative element address designate RED random early discard REL release message RF radio frequency RFC request for comment (communications) RFC radio frequency choke RFI radio-frequency interference RFIC radio frequency integrated circuit RFID radio frequency identification RFP request for proposal RGB red, green, blue RHET resonant-tunneling hot-electron transistor RHP reconfigurable hardware products RIE reactive ion etching RIO random early discard In/Out of Profile RIP raster image processor (DTP) RISC reduced-instruction-set computer RISR remote interrupt service routine RIU ring interface unit RLC resistance-inductance-capacitance RLE run-length encoding (data compression) RLL run length limited (eg: 2,7 RLL) RLN remote LAN node RLQ rate-limiting queues RM resource management RMI resource-manager interface RMII Reduced Media Independent Interface RMON Remote Network Monitoring rms root-mean-square RMW read-modify-write (software) RO reverse osmosis ROM read-only memory ROTS rugged off-the-shelf ROW rest of the world RP rapid prototyping RP reinforced plastic RPC remote procedural call (network) RPC remote-procedure calls rpm revolutions per minute rps revolutions per second RR round-robin RS recommended standard RSA Rivest, Shamir and Adelman (encryption) RSSI received signal strength indicator rt-VBR real-time variable bit rate RTD resistance temperature detector RTEID Real-Time Executive Interface Definition (Motorola) RTI return from interrupt RTL resistor transfer logic RTL register transfer level/language RTM resin transfer molding RTO return to output RTOS real-time operating system RTP rapid thermal processing RTS request-to-send RTV room-temperature-vulcanized (silicone) RTV real-time video RW read/write GO TO TOP
S SAM switched access with multiplexer S-DAB satellite digital audio broadcasting S/DMS SONET/digital multiplex switch S/H sample and hold SAM serial access memory sample/sec samples per second SAN Storage Area Network SAPI service access point identifier SAR synthetic aperture radar SAR segmentation and reassembly (communications) SAS silicon asymmetrical switch SASI Shugart Associates System Interface SAW surface acoustic wave SBC single-board computer SBDIP side-brazed dual in-line package SBIC shared bus interface controller SBIR Small Business Innovation Research SBM shared buffer memory (Alcatel) SBS silicon bilateral switch SC shared cored (Ericsson) SC/H subcarrier-to-horizontal (phase shift) phase of color burst extended to the leading edge of the horizontal sync pulse SCAM SCSI configured automatically (ANSI protocol) SCC serial communications controller SCC square chip carrier SCC stackable ceramic carrier SCCM standard cubic centimeters/per minute SCE storage-control element SCFL source-coupled FET logic SCH synchronization channel SCI scalable coherent interface SCI-PHY Saturn-Compliant Interface - Physical (device protocol) SCIM single-chip integration module SCM single-chip module SCOT sealed chips on tape SCPI Standards Committee for Programmable instruments SCR silicon-controlled rectifier SCS silicon-controlled switch SCSI Small Computer System Interface SCTE Society of Cable TV Engineers SCXI signal conditioning extension for instrumentation SDBGA super dissipation ball grid array SDCM serial data converter modules SDF standard delay format SDF Standard Delay File (OVI) SDH synchronous digital hierarchy SDIP shrink dual-in-line package SDK system development kit SDLC software description language C SDLC synchronous data-link control SDLVA successive-detection log video amplifier (microwave) SDOF single degree-of-freedom SDRAM synchronous DRAM SDSC Standards and Data Services Committee SE Switch Element SEAL simple and efficient AAL sec secant sec second SECAM Systeme Electronique Couleur Avec Memoire (European video standard) SECS Semiconductor Equipment and Material International's Equipment Communications Standard SEI secondary electron imaging (surface inspection) SEL surface-emitting lasers SELV safety extra-low voltage SEM-E standard electronic module e-type (avionics) SEMI Semiconductor Equipment and Material International (Association, Mountain View, CA) SEP signaling endpoint SERDES serializer/deserializer SEU single-event upset SFBI shared frame-buffer interface SFC Shannon-Farro coding (data compression) SFDR spurious free dynamic range SFFPCI Small Form-Factor Personal Computer Interface(standard) SFP short-fault protection SFROM smart flash ROM SGA solder grid array SGMP simple gateway monitoring protocol SHA sample-and-hold amplifier (ADC) SHF super high frequency SHG second harmonic generation SHT suppressed high-level differential transfer (circuit) Si silicon SIA Semiconductor Industry Association (Washington DC SIC Standard Industrial Classification (numbering code) SiC silicon carbide SICL standard instrument control library SID Society for Information Display (PCI) SIG Special Interest Group SIM single in-line module SIM Subscriber Identity Module SIMD single-instruction, multiple-data (array) SIMM single in-line memory module SiN silicon nitride sin sine SINAD signal-to-noise-and-distortion (ratio) SIO serial I/O SiO silicon oxide SIP Session Initialization Protocol SIP single in-line package SIP SMDS interface protocol SIR signal-to-interference ratio SIR surface insulation resistance SIU system interface unit SIU system integration unit SL stripline SLAM scanning laser acoustic microscope SLC single-layer ceramic SLC surface laminar circuit SLD source level debugger SLIC subscriber-line interface circuit (communications) Slicc slightly larger than IC carrier (packaging) SLIP Serial-Line Internet Protocol SLT solid logic technology SMA Semiconductor Manufacturers Association (UK) SMA surface-mounted assembly SMART stress-marginality and accelerated-reliability testing SMART Standard Module Avionics Repair and Test(software) SMC S-Bus mezzanine card SMC surface-mount components SMD Storage Module Drive SMD surface-mount device SMDS switched multimegabit data services (Europe) SME small-to-medium enterprises SMEMA Surface Mount Equipment Manufacturers Association SMI small- and medium-sized industries SMI (power) system management interrupts SMII Serial Media Independent Interface SMM (power) system management mode SMOBC solder mask over bare copper SMP symmetric multiprocessing SMPGA surface-mount pin grid array SMPS switch-mode power supply SMPTE Society of Motion Picture and TV Engineers SMRT surface-mount and reflow technology SMT surface-mount technology SMTA Surface-Mount Technology Association SMU source-measure unit SMUG Spokane Microcomputer Users Group SMX-6000 a Fujitsu switch model SNA systems network architecture (IBM) SNet SONET Network (Northern Telecom) SNMP simple network management protocol SNR signal-to-noise ratio SO small outline SOB small outline butt-leaded package SOG spin-on glass SOHO small office, home office SOI silicon-on-insulator (IC) SOIC small-outline IC SOJ SOIC with J-leads SOLA short, open, load and air-capacitor SONET synchronous optical network SOP small outline power (package) SORF small outline radio frequency (package) SOS silicon on sapphire SOSCARD Secure Operating System Card SOT small-outline transistor SOVA soft-output Viterbi algorithms SP span processor SP switch port (Ericsson) SPARC scalable processor architecture Sparc scalable processor architecture SPDIP shrink plastic dual in-line package spdt single-pole, double-throw SPE synchronous payload envelope SPI serial peripheral interface SPI synchronous pixel interface Spice Simulation Program with Integrated Circuit SPIE The International Society for Optical Engineering SPL sound pressure level SPM scanning probe microscope SPS samples per second spst single-pole, single-throw SQC statistical quality control SQE signal-quality error SQFP shrink quad flat pack SQL search and query language SQPSK staggered quadrature phase-shift keying (communications) SR set/reset (flip-flop) SRAM static RAM SRC Semiconductor Research Corporation (industry funded) SRCS SilkRoad Refractive Synchronization Communication SRL shift register latch SS spread spectrum (communications) SS7 Signalling System 7 SSA serial storage architecture SSB single sideband SSD solid-state disk SSET switching system exchange termination SSH simultaneous sample and hold (data acquisition) SSI small-scale integration SSL Secure Sockets Layer SSMM solid-state mass memory SSOP shrink small outline package SSR solid-state relay SST Science, Space, and Technology (US House of Representatives committee) SST solid state technology SST simultaneous self-test (logic mode) SST supersonic transport (aircraft) STB set-top box STL Schottky transistor logic STM scanning tunneling microscope STM synchronous transfer mode STM synchronous transport module STN The Scientific and Technical Information Network (Internet) STRIFE stress and life (testing) STS synchronous transport signal STT set-top terminal STTL Schottky transistor-transistor logic (TTL) SUI speech user interface (multimedia) SUS silicon unilateral switch SVD simultaneous voice and data SVGA super video graphics adapter SVHS super VHS (video format) SVP surge voltage protector SWL sound (power) level SWR standing-wave ratio SYSOP system operator (Internet) GO TO TOP
T T-BGA tape ball grid array T/H track and hold T/R transmit and receive TAB tape automated bonding TAC Technical Activity Committee TACS Total Access Communication System (British cellular) tan tangent TAP test access part TAPI telephone application program interface TAT transatlantic telephone (cable) TAV transverse acoustic-wave voltage Tbit terabit Tbit/sec terabits per second TC temperature coefficient TCAP transaction capabilities application part TCC temperature coefficient of capacitance TCE temperature coefficient of expansion TCE Technical Computing Environment TCIF Telecommunications Industry Forum TCM thermal conduction module TCM trellis-coded modulation TCO total cost of ownership TCP tape carrier package TCP/IP transmission control protocol/Internet protocol TCR tape carrier ring TCR temperature coefficient of resistance TCXO temperature compensated crystal oscillators TDD time-division duplex TDDS time-division duplex system (communications) TDM time-division multiplex (communications) TDMA time-division multiple access (communications) TDR time domain reflectometer TE transverse electric TEC thermal electrical cooler TEGFET 2-D electron-gas field effect transistor TEM transverse electromagnetic TF transfer function TFI transport format indicator TFT thin-film transistor TFT-LCD thin-film transistor liquid crystal display THB temperature humidity bias THD total harmonic distortion THHN Thermoplastic high heat-resistant coated nylon 3D three-dimensional TIA Telecommunications Industry Association (Washington) TIA time-interval analyzer TIC tape-automated bond in cap TIFF tagged image format file (computer graphics) TIGA Texas Instruments' Graphics Architecture TiN titanium nitride TIR total indicated reading TISSS Tester Independent Software Support System (DOD program) TL1 Transaction Language 1 TLB translation look-aside buffer TLC thin-layer chromatography TLIM transmission-line model TLM transmission line matrix TLM triple-layer metal TM traffic management TMC transfer mode converter/switch port termination TMN Traffic Management Network TMRC Technology Marketing and Research Council TMSL test and measurement systems language Tn digital carrier, type n TN twister nematic (LC display) TO transistor outline package TOP thin outline package TPC Transaction Processing Council (standard) TPC transmit power control tpi tracks per inch TPQFP test-pad quad flat pack TPU time processor unit TQC total quality control TQFP tape quad flat pack TQFP thin quad flatpack TQM total quality management Tr transition time TRAM transputer random access memory (module) triac triac bidirectional rectifier (two SCRs used in antiparallel) TRP Technology-Reinvestment Program TSB Telecommunications Standardization Bureau TSOP thin small outline package TSP temperature-sensitive parameter TSSOP thin scaled small outline package TSSOP thin shrink small-outline package TST time-space-time TTC Telecommunications Technology Committee (Japan) TTC time-to-collection (data acquisition) TTL transistor-transistor logic TTY teletypewriter TUV Technische Uberwachungs-Verein (German test lab) TVI TV interface TVRO television receive-only (DBS) TVS transient voltage suppressor 2D two-dimensional TXCO temperature compensated oscillator GO TO TOP
U uA microampere UART universal asynchronous receiver-transmitter (communications) UBR unspecified bit rate UBS uninterruptible battery system uC microcomputer uC microcontroller UCOM Users' Committee of Foreign Semiconductors UDI Universal Digital Interface UDP User Datagram Protocol (Internet) UDPs user-defined primitives uF microfarad ug microgram uH microhenry UHF ultrahigh frequency UHV ultrahigh vacuum UIL User Interface Language (Open Software Foundation) UJT unijunction transistor UL Underwriters' Laboratory ULSI ultra large-scale integration um micron UMTS Universal Mobile Telecommunication System UN United Nations UNEP United Nations Environment Program UNI User Network Interface (standard) uP microprocessor UPnP Universal Plug and Play ( UPC universal product code UPS uninterruptible power source UPSR unifine pitch US Upstream USART transmitter USAT ultrasmall aperture terminal USDC US Display Consortium USE/DA Users Society for Electronic Design Automation usec microsecond USTA US Telephone Association UTC Universal Coordinated Time UTOPIA Universal Test and Operations Physical Interface for Asynchronous Transfer Mode UTQFP ultrathin quad flat pack UTRA UMTS Terrestrial Radio Access UTSOP ultrathin small-outline package UUT unit under test uV microvolt UV ultraviolet UV-PROM ultraviolet-erasable PROM UVLO undervoltage lockout (thresholds) uW microwatt GO TO TOP
V V volt V ac volts alternating current V dc volts direct current V-MOS v-groove MOS V/F voltage to frequency VA volt-ampere VAFC VESA Advanced Feature Connection VAR value-added reseller VAR volt-ampere, reactive VB visual Basic (multimedia software) VBI vertical blanking interval (TV) VBR variable bit rate (networking) (nrt - non-real-time; rt - real-time) VBX Visual Basic extension VC virtual channel VCA voltage-controlled amplifier VCD variable center distance VCI virtual channel indicator/identifier (network) VCIF VESA Display Information Format VCO voltage-controlled oscillator VCPU video compression processor unit VCR videocassette recorder VCSEL vertical-cavity surface-emitting laser VCXO voltage-controlled crystal oscillator VDE visual development environment VDE video-decompression engine VDSL very high-rate digital subscriber line (40 Mbps downstream) VESA Video Electronics Standards Association VF vacuum fluorescent (display) VF voice frequency (300 to 3400 Hz) VFC voltage-to-frequency converter VFD vacuum fluorescent display VFEA VMEbus Futurebus + Extended Architecture VFO variable-frequency oscillator VGA video graphics array VGA video graphic accelerator (circuit) VGA Video Graphics Adapter VHADSL very high-bit-rate asymmetric digital subscriber line VHDL very high density logic VHDL VHSIC Hardware Description Language VHDSL very-high-bit rate digital subscriber line VHF very high-frequency (30 kHz to 300 MHz) VHSIC very high-speed IC VIL vertical in-line VISA virtual instrument software architecture VISA VXI System Alliance (standard) VITA VMEbus International Trade Association Vital VHDL Initiative Toward ASIC Libraries (organization) VLAN Virtual local area network VL Bus VESA local bus VLC/VLD variable length coding, variable length decoding VLF very low frequency (below 30 kHz) VLIW very long instruction word (computer architecture) VLS virtual library system VLSI very-large-scale integration VMC VESA Media Channel (bus) VME virtual machine environment VMEbus versatile modular E-bus (from former VERSAbus-E) VMTP Versatile Message Transaction Protocol (communications) VNA vector network analyzer VOD video-on-demand VoIP voice over Internet Protocol VOST VESA Open Set Top (group) VOX voice-operated threshold (communications) VP virtual path VP video processor VPAK vertical package VPCI virtual path connection identifier VPD vapor phase dissolution VPE vapor phase epitaxy VPEC Virginia Power Electronics Center (Blacksburg, VA) VPI virtual path indicator/identifier (network) VPM vertical package module VPP VXI Plug-and-Play (systems alliance) VPS vapor phase soldering VQ vector quantization VQFP very fine pitch quad flat pack VR virtual reality VRAM video random-access memory VRD virtual retina display VRM voice recognition module VROOMM Virtual Runtime Object-Oriented Memory Manager versus versus vs versus VSAT very small aperature terminal (satellite transceiver with 30-40cm disk) VSB VME Subsystem bus VSELP vector-sum excited linear-predictive (speech coding) VSIM virtual surface image memory VSO very small-outline VSOP very small outline package (Japanese MFP) VSS VHDL system simulator VSWR voltage standing-wave ratio (RF and microwave) VTCO voltage-temperature cutoff (battery charging) VTVM vacuum tube Voltmeter VU volume unit (meter) VXCO voltage-controlled crystal oscillator VXIbus VMEbus extension for instrumentation GO TO TOP
W W watt WAIS wide area information server (Internet) WAN wide area network WAP wireless application protocol WB wire bonded WDM wavelength division multiplexing WFQ weighted fair queuing Whr watthour WLAN wireless local area network WLL wireless local loop WML wireless markup language WORM write once, read many (optical desk) WPKI wireless PKI (public key infrastructure) wpm words per minute WRAM window RAM WRED weighted random early discard WRR weighted round robin WSI wafer scale integration WTLS wireless transport layer security WUT wafer under test WWW World Wide Web of the Internet WYSIWYG what you see is what you get GO TO TOP
X X-MOS high-speed metal-oxide semiconductor XA extended architecture (CD-ROM) XDR external data representation xDSL Digital Subscriber Line XGA extended graphics adapter XIP execute-in-place XIWT Cross-Industry Working Team (information transmission) XPG X/Open Portability Guide (standard group) XRF x-ray fluorescence (spectroscopy) XTP Express Transfer Protocol (communications) GO TO TOP
Y YAG ytrrium-aluminum garnet YIG yttrium iron garnet (microwave device material) YTD year to date YUV luminance/chrominance GO TO TOP
Z ZCS zero-current switching ZIF zero insertion force ZIP zigzag-in-line package ZnO zinc oxide ZVS zero-voltage switching GO TO TOP
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