[ 1 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 ]
| 4GL | fourth generation language |
| A | |
| A | ampere |
| A | angstrom |
| A/D | analog to digital |
| AAC | Advanced Audio Coding |
| AAC | Advanced Audio Compression |
| AAIC | active addressing integrated circuit |
| AAL | ATM Adaptation Layer |
| AAL2 | ATM Adaptation Layer 2 |
| ABEL | Advanced Boolean Equation Language |
| ABI | application binary interface |
| ABT | advanced BiCMOS technology |
| 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 |
| ACL | advanced CMOS logic |
| ACM | Association for Computing Machinery |
| ACPI | Advanced Configuration and Power Interface [spec] |
| ACR | SIG Advanced Communications Riser Special Interest Group |
| ACT | Advanced CMOS logic with TTL-compatible inputs |
| ADC | analog-to-digital converter |
| ADDSP | application-specific digital signal processor |
| ADM | add/drop multiplexer |
| 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) |
| AES | Advanced Encription Standard |
| AF | audio frequency |
| AFC | audio-frequency control |
| AFC | automatic frequency control |
| AFE | Analog front end |
| AGC | automatic gain control |
| AGP | accelerated graphics port |
| AHDL | analog hardware-description language (software) |
| Ahr | ampere-hour |
| Ahr | ampere hour |
| AI | artificial intelligence |
| AIN | advanced intelligent network (telecommunications) |
| ALF | advanced library format |
| ALGOL | algorithmic language |
| ALN | adaptive-logic network (neural) |
| ALU | arithmetic-logic unit |
| AM | active matrix (liquid-crystal display) |
| AM | amplitude modulation |
| AMBA | Advanced Microcontroller Bus Architecture |
| AMEL | active-matrix electroluminescence |
| 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 |
| APD | Avalanche photodiode |
| 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) |
| 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 standard product |
| 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 |
| ATELP | adaptive-transform-excited-linear prediction |
| ATG | automatic test generation |
| ATM | asynchronous transfer mode (communications) |
| ATPG | automatic test-program/pattern generation |
| ATRAC | adaptive-transform acoustic coding |
| ATSC | Advanced Television Systems Committee |
| 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 |
| AWG | array waveguide grading |
| 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) |
| BIST | built-in self-test |
| Bit-BLT | bit-block line transfer |
| BITE | built-in test equipment |
| BIU | bus-interface unit |
| 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 |
| BSAC | bit-sliced arithmetic coding |
| BSC | bisynchronous communication |
| BSDL | boundary-scan description language (software) |
| BSI | British Standards Institution |
| BSS | broadcast satellite service (DBS) |
| BSS | basic service set (communications) |
| BTL | backplane transceiver logic |
| BTU | British thermal unit |
| BWA | broadband wireless access |
| 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) |
| CAIBE | chemically assisted ion-beam etch |
| CAM | content-addressable memory |
| CAM | computer-aided manufacturing |
| CAMAC | computer-aided measurement and control |
| CAN | controller-area network |
| 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) |
| CD-R | CD-recordable |
| CDR | clock and data recovery |
| 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 |
| CMP | chip-level multiprocessing |
| 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), also sometimes defines a single-chip A/D-plus-D/A |
| converter | |
| 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) |
| CPCI | compact peripheral-component interconnect |
| CPE | Customer premises equipment |
| CPGA | ceramic pin-grid array (IC) |
| cpi | characters per inch |
| CPIX | Common Programming Interface |
| 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 |
| CSIX | Common Switch Interface.CSM cell-site modem |
| CSMA/CD | carrier-sense multiple access/collision detection (LAN) |
| CSO | composite second order |
| CSP | chip-scale package |
| CSP | chip-sized package |
| CTE | coefficient of thermal expansion |
| CTIA | Cellular Telecommunications Industry Association |
| CTIA | Computing Technologies Industry Association |
| CTS | clear to send |
| CW | clockwise |
| CW | continuous wave |
| 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 |
| DAT | digital audio tape |
| 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) |
| DBS | digital-broadcast satellite |
| 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 |
| DCC | digital compact cassette |
| DCDI | directional correlational deinterlacing |
| DCE | data-communications equipment |
| DCE | Distributed Computing Environment (OSF) |
| DCH | dedicated channel |
| DCI | display-control interface |
| DCL | delay-calculation language |
| DCOM | Distributed Component Object Model |
| 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) |
| DDR | double data rate |
| DDS | direct digital synthesis |
| DDTCP | dual tape-carrier package (IC) |
| DECT | Digital European Cordless Telephone/Telecommunications (standard) |
| DEF | design-exchange format |
| 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 inline (IC package) |
| DIMM | dual inline-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 |
| DLL | digital delay-locked loop |
| DLP | digital light processing |
| 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 | deep submicron |
| DSM-CC | Digital Storage Media Command and Control (group) |
| DSO | digital-storage oscilloscope (usually describes general-purpose instruments) |
| DSO | digital-sampling oscilloscope (usually describes ultra-high-speed sequential-sampling instruments) |
| DSP | digital signal processing/processor |
| DSR | data set ready |
| DSSS | direct-sequence spread spectrum (communication) |
| DTAB | demountable tape-automated bonding (IC) |
| DTAD | digital telephone-answering device |
| DTE | data-termination equipment |
| DTI | Department of Trade and Industry (British government) |
| DTL | diode transistor logic |
| DTMF | dual tone multifrequency (communications) |
| DTS | Digital Theater System |
| DTV | digital television |
| DUT | device under test |
| DVD | digital versatile disk |
| DVI | digital video interactive |
| DVI | Digital Visual Interface |
| DVM | digital voltmeter |
| DVP | digital video processor |
| DWDM | dense-wavelength-division multiplexing |
| DWT | discrete waveform transform (video compression) |
| E | |
| E-O | electro-optical |
| EAN | European Article Number.EAROM electrically alterable read-only memory |
| EBCDIC | extended binary-coded-decimal interchange code |
| EBGA | enhanced ball-grid array |
| EBU | European Broadcast Union |
| 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 amplifier |
| 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 |
| EDTV | enhanced-definition digital television |
| 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) |
| EJTAG | enhanced JTAG |
| 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 |
| EPAC | Enhanced Perceptual Audio Coder |
| 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 |
| 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 |
| FACT | Fairchild advanced CMOS technology |
| FALU | floating-point arithmetic-logic unit |
| FAQ | frequently asked question |
| FAS | frame-alignment signal (communications) |
| FASIC | function- and algorithm-specific integrated circuit |
| FAST | Fairchild advanced Schottky technology |
| FAST | flexible accelerated stress test |
| FAT | file-allocation table (digital disk format) |
| FC | Fibre Channel (communication) |
| fc | foot candle |
| FCA | Fibre Channel Association |
| FCBGA | flip-chip ball-grid array |
| FCC | Federal Communications Commission (Washington, DC) |
| FCSI | Fibre Channel Systems Initiative |
| FCT | fast CMOS technology |
| FDDI | fibre distributed data interface (communications) |
| FDMA | frequency-division multiple access (communications) |
| FDX | full-duplex (communications) |
| FEA | field-emitter array (display) |
| FEA | finite-element array |
| FEBE | far-end-block error (communications) |
| FEC | flexible etched circuits |
| FEC | forward error correction |
| 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 |
| FLC | ferroelectric liquid crystal |
| 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) |
| FOV | field of view |
| FPBGA | fine-pitch ball-grid array |
| FPCB | field-programmable circuit board |
| FPGA | field-programmable gate array |
| FPGA | fine-pitch grid array |
| FPIC | field-programmable interconnect chip |
| FPID | field-programmable interconnect device |
| FPLA | field-programmable logic array |
| FPN | floating-point number |
| FPSLIC | field-programmable system-level IC |
| FPU | floating-point unit |
| 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 |
| 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 |
| Gencam | generic computer-aided manufacturing |
| GFC | generic flow control (ATM) |
| GFM | graphics file manager |
| GFSK | gaussian frequency-shift keying (communications) |
| GHz | gigahertz |
| GIF | graphic image file |
| GMII | Gigabit media-independent interface |
| GMII | Gigabit MAC interface |
| 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 communications |
| GTL | Gunning transceiver logic |
| GTLP | Gunning transceiver logic plus |
| GUI | graphical user interface |
| H | |
| H | henry |
| HCPLD | high-capacity programmable-logic device |
| HD | high-definition (TV) |
| HDCD | high-definition compatible digital |
| 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 digital 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 |
| HSTL | high-speed transceiver logic |
| 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 |
| HTTP | Hypertext Transfer Protocol |
| HV | high voltage |
| Hz | hertz |
| I | |
| I/O | input/output |
| I2L | integrated injection logic |
| IA | instrument amplifier |
| IAB | Internet Activities Board |
| IAC | interapplication communication (protocol) |
| IBOC | in-band on-channel |
| IC | integrated circuit |
| ICE | in-circuit emulator |
| ICMP | Internet Control Message Protocol |
| 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 |
| InGaAs | indium gallium arsenide |
| 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 | intellectual property |
| IP | Internet Protocol |
| IPC | Institute for (Interconnecting and) Packaging (Electronic) Circuits (Lincolnwood, IL) |
| IPMC | industrial process measurement and control.IPoATM IP over ATM |
| ips | inch per second |
| IPv4 | Internet Protocol version 4 |
| 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 programmable |
| ISP | Internet-service provider |
| ITU | International Telecommunications Union |
| IVDS | interactive video data service |
| IVHS | Intelligent Vehicle Highway System |
| IVMS | In-Vehicle Multiplexing System (standard) |
| 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) |
| JVM | Java virtual machine |
| 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 |
| 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) |
| LC | low complexity |
| LCC | leadless chip carrier |
| LCD | liquid-crystal display |
| LCI | line-conducted interference (telecommunications) |
| LCOS | liquid crystal on silicon |
| LCPGA | low-cost pin-grid array |
| LCR | inductance-capacitance-resistance |
| LCR | inductance-capacitance-resistance (meter) |
| LD-AAC | Low Delay Advanced Audio Compression |
| LDMOS | lateral double-diffused MOS |
| LED | light-emitting diode |
| LEF | library-exchange format |
| 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 |
| Li-ion | lithium ion |
| 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) |
| LLP | leadless lead-frame package |
| 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 | lossless predictive audio compression |
| 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 |
| LTAC | lossless transform audio coding |
| LUT | look-up table |
| LVCMOS | low-voltage complementary metal-oxide semiconductor |
| LVDS | low-voltage differential signaling |
| LVDT | linear-velocity displacement transformer (transducer) |
| LVT | low-voltage transceiver |
| LVTTL | low-voltage transistor-to-transistor logic |
| 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 |
| MARS | mechanical antireflective switch |
| 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 |
| MDCT | modified discrete cosine transform (synonymous with TDAC) |
| MDSP | microwave digital signal processor |
| MEMS | microelectromechanical systems |
| 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) |
| MLP | Meridian lossless packing |
| MMDS | multichannel multipoint distribution service |
| MMF | multimode fiber |
| MMI | man-machine interface |
| MMIC | monolithic microwave integrated circuit |
| MMS | modular measurement system |
| MMU | memory-management unit (microprocessor) |
| MMX | multimedia extension |
| MNOS | metal-nitride oxide semiconductor |
| MO | magneto optical disk storage |
| MOCVD | metal-organic chemical vapor decompression (LED) |
| modem | modulator-demodulator (telecommunications) |
| MOEMS | micro-optical electromechanical systems (optical MEMS) |
| 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 | multiprotocol 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) |
| 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) |
| NBC | non-backward compatible |
| 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) |
| NDDS | network data-delivery service |
| 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 |
| NiCd | nickel cadmium |
| NII | National Information Infrastructure |
| NIM | network-interface module (standard) |
| NIM | National Instrumentation Module (standard) |
| NiMH | nickel metal hydride (battery) |
| NIST | National Institute for 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 |
| NOP | no-operation instruction |
| 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 |
| NSMD | nonsolder mask defined.NTC negative temperature coefficient |
| NTDS | National TV Design Standards |
| NTE | near to eye |
| NTSC | National Television 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 |
| NWDM | narrow-wavelength-division multiplexing |
| O | |
| OADM | optical add-drop multiplexer |
| 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 |
| OEO | optical-electrical optical |
| OFDM | orthogonal frequency division multiplexing (communications) |
| OIDA | Optoelectronics Industry Development Association |
| OLA | open-library architecture |
| OLE | object linking and embedding (Microsoft software standard) |
| OLED | organic LED |
| 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) |
| OSPF | open sorted path first |
| 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 |
| OXC | optical cross-connect |
| 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 |
| PAC | Perceptual Audio Coder |
| PAD | packet assembler/disassembler |
| PAD | programmable address decoder |
| PAD | bus processor address data bus |
| PAL | phase-alternation line; French TV spec.PAL programmable-array logic |
| PALC | plasma-addressed liquid crystal (display) |
| PAM | pulse-amplitude modulation |
| PARD | periodic and random deviation |
| PASC | Perceptual Audio Sub-band Coding |
| PBA | printed board assembly |
| PBGA | plastic ball-grid array |
| PBGAM | plastic ball-grid array, multilayer |
| 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-inline 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 | positive-doped/intrinsic/negative-doped |
| PIN | pn junction with isolation region.PIND particle impact noise detection |
| PIO | parallel I/O |
| 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 |
| PLC | planar light-wave circuit |
| 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 |
| PROM | programmable ROM |
| 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 |
| PXI | PCI eXtensions for Instrumentation |
| 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 |
| QDR | quad data rate |
| QE | quantum efficiency (photomultiplier) |
| QFB | quad flat butt-leaded package |
| QFP | quad flat pack |
| QIC | quarter-inch cartridge (storage) |
| QM | queue management |
| 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 |
| QVGA | quarter VGA (320X240 pixels) |
| 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 |
| RTPS | real-time publish-subscribe |
| RTS | request-to-send |
| RTV | room-temperature-vulcanized (silicone) |
| RTV | real-time video |
| RW | read/write |
| S | |
| S-DAB | satellite digital audio broadcasting |
| S/DMS | SONET/digital multiplex switch |
| S/H | sample and hold |
| SACD | super-audio compact disc |
| SAM | serial access memory |
| SAM | switched access with multiplexer |
| 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 |
| SBS | smart battery system |
| 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 |
| SDTV | standard-definition digital television |
| SE | Switch Element |
| SEAL | simple and efficient AAL |
| sec | secant |
| sec | second |
| SECAM | Systeme Electronique Couleur Avec Memoire (European video standard) |
| SECAM | Sequential Couleur Avec Memoire |
| 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 |
| SiGe | silicon germanium |
| SIM | single inline 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 |
| SLA | sealed lead acid |
| 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) |
| SMBus | system-management bus |
| SMC | S-Bus mezzanine card |
| SMC | surface-mount components |
| SMD | solder mask defined |
| 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 |
| SMF | single-mode fiber |
| 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 |
| SOC | system on chip |
| 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 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 |
| SPDM | scalable polynomial-delay model |
| 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 |
| SPLD | simple programmable-logic device |
| SPM | scanning probe microscope |
| SPS | samples per second |
| SPS | sound-processing software |
| spst | single-pole, single-throw |
| SQAM | Sound Quality Assessment Material |
| 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 random-access memory |
| 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 | scalable sampling rate |
| 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) |
| SSTL | stub-series-terminated logic |
| 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) |
| STP | shielded twisted pair |
| 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 (800X600 pixels) |
| SVHS | super VHS (video format) |
| SVP | surge voltage protector |
| SWL | sound (power) level |
| SWR | standing-wave ratio |
| SYSOP | system operator (Internet) |
| 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 |
| TCE | thermal coefficient of expansion |
| 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 |
| TDC | time-to-digital converter |
| TDAC | time-domain alias cancellation (synonymous with MDCT) |
| TDD | time-division duplex |
| TDDS | time-division duplex system (communications) |
| TDM | time-division multiplexing (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 |
| TFF | thin-film filter |
| TFI | transport format indicator |
| TFP | thin flat package |
| 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, DC) |
| 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 flat pack |
| 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 |
| TwinVQ | transform-domain-weighted interleaved vector quantization |
| 2-D | two-dimensional |
| TXCO | temperature compensated oscillator |
| 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 |
| UDWDM | ultradense-wavelength-division multiplexing |
| 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 (www.upnp.org) |
| UPC | universal product code |
| UPS | uninterruptible power source |
| UPSR | unifine pitch |
| US | Upstream |
| USART | transmitter |
| USAT | ultrasmall aperture terminal |
| USB | Universal Serial Bus |
| 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 |
| UTP | unshielded twisted pair |
| 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 |
| 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 |
| VCVA | voltage-controlled variable attenuator.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 adapter |
| 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 | very-high-speed integrated-circuit 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 | versa module eurocard |
| 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 |
| VPN | virtual private network |
| 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 | vestigial sideband |
| 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 |
| VXI | VME eXtensions for Instrumentation |
| VXIbus | VMEbus eXtension for Instrumentation |
| 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 |
| WMA | Windows Media Audio |
| WML | Wireless Markup Language |
| WORM | write once, read many (optical desk) |
| wPKI | wireless 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 |
| 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) |
| XML | eXtensible Markup Language |
| XPG | X/Open Portability Guide (standard group) |
| XRF | x-ray fluorescence (spectroscopy) |
| XTP | Express Transfer Protocol (communications) |
| Y | |
| YAG | ytrrium-aluminum garnet |
| YIG | yttrium iron garnet (microwave device material) |
| YTD | year to date |
| YUV | luminance/chrominance |
| Z | |
| ZCS | zero-current switching |
| ZIF | zero insertion force |
| ZIP | zigzag-in-line package |
| ZnO | zinc oxide |
| ZVS | zero-voltage switching. |