Glossary
of
Terms, Standards, Abbreviations + Acronyms

Here are 1000+ Computing, Hardware, Software, Internet, Networking, Electronics, Audio, Music, Radio, Cinema, Television, Video, Animation, Recording, Graphics, Imaging, Photography + Arts file extensions, terms, standards, abbreviations, acronyms, alphabetisms + initialisms listed in alphabetical order, also available as GLOSSARY.TXT [plain text file], part of my ©Tricks + Secrets Files, FREEware:

• Windows 9x/NT4/2000/ME/XP/2003 + DOS 7.xx/8.00: W95-11D.EXE

• Windows/WfWG 3.1x + DOS 6.xx: W31-11D.ZIP

Updated January 19 2012

  NOTE: I post new entries frequently. Please contact me for other terms (including their definitions) you consider I should add here or for any corrections.

Glossaria, Dictionaria, Encyclopædia, Compendia + Referentia
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0–9

1080i = 1920x1080 interlaced screen resolution (computer monitors + HDTV).
1080p = 1920x1080 progressive scan screen resolution (computer monitors + HDTV).
16:9 = Wide digital cinema/TV display horizontal:vertical (letterbox) aspect ratio (new standard) (see WAR).
24p = High Definition 24 frames/second progressive video (Sony/Panasonic) (also HiDef).
286 = Intel 80286 processor.
2D = Bi (two) dimensional: x and y axes.
2FA = 2 Factor Authentication, also TFA (strong, multi-factor authentication).
2K = 2000.
2K1 = 2001.
2K2 = 2002.
2K3 = 2003.
2K4 = 2004.
2K5 = 2005.
2K6 = 2006.
2K7 = 2007.
2K8 = 2008.
2K9 = 2009.
386 = Intel 80386 processor (SX/DX).
386MAX = Qualitas 386 Expanded Memory Manager (386MAX.SYS).
3D = Tri (three) dimensional: x, y and z axes.
3DC = 3D Consortium (Sharp/Sanyo/Sony/Toshiba/Samsung/LG).
3dfx = 3D Graphics Interactive (Voodoo family 3D chipsets).
3DIF = 3D Industry Forum (Intel/Adobe/Microsoft).
3DNow! = AMD K6/K7/K8/K9 CPU multimedia extensions.
3DRAM = 3D Dynamic Random Access Memory.
3GIO = 3rd Generation Input/Output (PCI 3.0 or PCI Express or PCIe) bus architecture: 64-bit, 133/266 MHz, 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell).
4:3 = Traditional analog TV display horizontal:vertical aspect ratio (old standard).
486 = Intel 80486 processor (DX/DX2/DX4).
4K = 4096x3112 screen resolution (computer monitors + HDTV).
586 = Intel 80586 processor (Pentium/Pentium Pro).
686 = Intel 80686 processor (Pentium II/III/IV).
720i = 1280x720 interlaced screen resolution (computer monitors + HDTV).
720p = 1280x720 progressive scan screen resolution (computer monitors + HDTV).
86 = Intel 80X86 Central Processing Unit (CPU).
87 = Intel 80X87 Floating Point Unit (FPU).
80286 = Intel 80286 processor.
80386 = Intel 80386 processor (SX/DX).
80486 = Intel 80486 processor (DX/DX2/DX4).
80586 = Intel 80586 processor (Pentium/Pentium Pro).
80686 = Intel 80686 processor (Pentium II/III/IV).
8086 = Intel 8086 processor (first generation).
80X86 = Intel 80X86 processors family.

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A

A3D = Aureal 3D surround sound technology.
AA = Anti-Aliasing edge smoothing technology (3D video).
AAAS = American Association for the Advancement of Science.
AAC = Advanced Audio Coding (enhanced MPEG-4 encoding).
AAF = Advanced Authoring format (Microsoft video).
AC = Alternating Current (variable electrical current).
AC-3 = Advanced Codec 3 Dolby Digital 5.1 (5 + 1 = 6 channels) sound technology (3D audio).
AC'97 = Audio Codec 1997 component specification (Intel).
ACK = ACKnowledgement (modem response).
ACM = Association for Computing Machinery.
ACPI = Advanced Configuration Power Interface.
ADC = Analog to Digital Converter.
ADPCM = Adaptive Differential Pulse Code Modulation.
ADSL = Asymmetrical Digital Subscriber Line modem technology (1.1 MHz, 4 Mbps).
ADSL2+ = Asymmetrical Digital Subscriber Line version 2+ modem technology (2.2 MHz, 24 Mbps).
ADVD = Audio Digital Versatile Disk technology.
AES = Advanced Encryption Standard.
AFR = Alternate Frame Rendering (ATI Rage Fury MAXX).
AFM = Atomic Force Microscope.
AGP = Accelerated Graphics Port technology (Intel).
AGP-1x = Accelerated Graphics Port technology 1st generation (AGP 1.0): 266 MB/sec bandwidth (Intel).
AGP-2x = Accelerated Graphics Port technology 2nd generation using sidebands (AGP 2.0): 533 MB/sec bandwidth (Intel).
AGP-4x = Accelerated Graphics Port technology 3nd generation using fast writes (AGP 3.0): 1.07 GB/sec bandwidth (Intel).
AGP-8x = Accelerated Graphics Port technology 4th generation (AGP 4.0): 2.14 GB/sec bandwidth (Intel).
AGRAS = AntiGlare AntiReflection AntiStatic screen treatment (CRT display).
AHCI = Advanced Host Controller Interface (SATA controllers).
AI = Artificial Intelligence.
AIFF = Audio Interchange File Format lossless uncompressed audio file format standard (Apple).
AIT = Advanced Intelligent Tape (Sony).
AJAX = Asynchronous JavaScript And XML (web design technologies).
ALDC = Adaptive Lossless Data Compression (IBM).
AMD = Advanced Micro Devices Incorporated.
AMI = American Megatrends Incorporated.
AMOLED = Active Matrix Polymer Organic Light Emitting Diode display (Samsung).
AMR = Audio/Modem Riser slot (Intel Pentium III/IV 8XX chipsets).
ANI = Microsoft Windows ANImated cursor graphic file.
ANSI = American National Standards Institute.
AOD = Advanced Optical Disk technology (Toshiba/NEC).
AOL = America OnLine.
API = Application Programming Interface.
APIC = Advanced Programmable Interrupt Controller.
APM = Advanced Power Management.
Apple = Apple Inc.
ARAG = AntiReflection AntiGlare screen treatment (CRT display).
ARAS = AntiReflection AntiStatic screen treatment (CRT display).
ARP = Address Resolution Protocol (networking technology).
ARPANET = Advanced Research Projects Agency Network (Internet forerunner).
ASC = Active Signal Correction technology (Sony CRT display).
ASCII = American Standard Code for Information Interchange.
ASF = Advanced Streaming Format (Microsoft NetShow/DirectVideo).
ASIC = Application Specific Integrated Circuit.
ASLR = Address Space Layout Randomization (computer security randomization algorithm).
ASP (1) = Advanced Sound Processor (Creative Labs).
ASP (2) = Application Service Provider.
ASP (3) = Active Server Page (Microsoft).
ASP (4) = Average Selling Price.
ASPI = Advanced SCSI Programming Interface.
ASVD = Analog Simultaneous Voice and Data.
Async SRAM = Asynchronous Static Random Access Memory (CPU L2 cache).
AT = Advanced Technology (motherboard form factor).
ATA = Advanced Technology Attachment technology (ANSI for Integrated Drive Electronics).
ATA/33 = Ultra ATA/Ultra DMA 33.33 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATA/66 = Ultra ATA/Ultra DMA 66.66 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATA/100 = Ultra ATA/Ultra DMA 100 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATA/133 = Ultra ATA/Ultra DMA 133.33 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
ATAPI = Advanced Technology Attachment Packet Interface.
Athlon = AMD Athlon K7 CPU.
ATI = ATI Technologies Inc.
ATM (1) = Adobe Type Manager.
ATM (2) = Asynchronous Transfer Mode (network).
ATSC = Advanced Television Systems Committee.
ATV (1) = Analog Broadcast TeleVision (old TV standard).
ATV (2) = Advanced Broadcast TeleVision (DTV, HDTV standard).
ATX = Advanced Technology EXtended (motherboard form factor).
AU = AUdio file format.
AUTOEXEC.BAT = AUTOmatically EXECuted BATch file.
AVI = Audio Video Interleave (Microsoft video file format).
AWR = Active Wide Range playback system (Toshiba CD-ROM).
AXCEL216 = Packard Bell AXCEL216 386/SX 25 MHz [my first PC ].

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B

b = bit (binary digit): unit of digital information: 1 bit = 0 or 1.
B = Byte (Binary octet): unit of digital data: 1 Byte = 8 bits.
BASIC = Beginners All-purpose Symbolic Instruction Code.
BAT = MS-DOS BATch program file (text/ASCII format).
Baud = Modem line (carrier) signaling high/low events/shifts per second.
BBS = Bulletin Board System.
BD = Blu-Ray Digital Versatile Disc technology (Sony/Philips/Hitachi/Sharp/Samsung).
BDA (1) = BIOS Data Area.
BDA (2) = Blu-Ray Disc Association.
BD-R = Blu-Ray Disc Recordable Media technology (Sony/Philips/Hitachi/Sharp/Samsung).
BD-RE = Blu-Ray Disc Rewritable Media technology (Sony/Philips/Hitachi/Sharp/Samsung).
BD-ROM = Blu-Ray Disc Read Only Media technology (Sony/Philips/Hitachi/Sharp/Samsung).
BDXL = High Capacity Recordable and Rewritable Blu-Ray Disc [triple (100 GB) or quadruple (128 GB) layer].
BEDO = Burst Extended Data Out (DRAM).
Bel = Unit of acoustic/sound level/pressure/power: 1 Bel = 10 dB (deciBels).
BGA = Ball Grid Array (242 pin Intel CPU).
BIC-TCP = Binary Increase Congestion Transmission Control Protocol (NCSU).
BIF = Binary Image Format file.
BINHEX = BINary HEXadecimal (BINary to ASCII data conversion).
BIPM = Bureau International des Poids et Mesures (International Bureau of Weights and Measures).
BIOS = Basic Input Output System.
Blu-Ray = Blu-Ray Digital Versatile Disc technology (Sony/Philips/Hitachi/Sharp/Samsung).
BMP = RGB/RLE encoded Microsoft Windows BitMap Picture file.
BMR = Ballistic Magneto-Resistive effect (Hewlett Packard/IBM/Siemens Hard Disk Drive technology).
BoM = Bill of Material (manufacturer costs).
bpp = bits per pixel.
Bps = Bytes per second.
bps = bits per second.
BSB = Back Side Bus (CPU to RAM motherboard bus).
BSD = Berkeley Software Distribution (Unix-like OS).
BSOD = Blue Screen Of Death. [Microsoft Windows most dreaded "feature". ]
BTX = Balanced Technology EXtended (motherboard form factor).
Bus = Binary data gateway between hardware modules: CPU, chipset, RAM, I/O etc.

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C

CaaS = Computing as a Service, a.k.a. on demand computing [via local thin client (bare bones operating system) + remote central host (internet cloud server)] (Verizon/SAWIS).
CAB = CABinet compression format technology (Microsoft).
CAD = Computer Aided Design.
CADD = Computer Aided Design and Drafting.
CAN = Controller Area Network (array of microcontrollers).
CAS = Column Access Strobe.
CATV = Cable TeleVision (analog/digital video/audio signal transmitted through coaxial cable).
CAV = Constant Angular Velocity (Compact Disk).
CCFB = Cold Cathode Fluorescent Backlighting (LCD screen).
CCFL = Cold Cathode Fluorescent Lighting (LCD screen).
CCITT = Commité Consultatif International du Télégraphe et Téléphonie (International Telegraph and Telephony Consultative Committee).
CD = Compact Disk.
CD-DA = Compact Disk Digital Audio.
CDFS = CD-ROM File System (data CD).
CD-I = Compact Disk Interactive.
CDR = CorelDRAW! image file.
CDRAM = Cache Dynamic Random Access Memory.
CD-R = Compact Disk Recorder.
CD-RAM = Compact Disk Rewritable Access Media.
CD-ROM = Compact Disk Read Only Media.
CD-ROM/XA = Compact Disk Read Only Media EXtended Architecture (Sony/Philips/Microsoft).
CDR-ROM = Compact Disk Recorder and Read Only Media (ODC).
CD-RW = Compact Disk ReWritable.
CDSL = Consumer Digital Subscriber Line modem technology (Rockwell).
Celeron = Intel Pentium II/III/IV Celeron CPU (80686).
CERN = Organisation Européenne pour Recherche Nucléaire (European Organization for Nuclear Research).
CERT = Computer Emergency Response Team.
CFML = Cold Fusion Markup Language.
CGA = Color Graphics Adapter.
CGI (1) = Computer Generated Image.
CGI (2) = Common Gateway Interface.
CGM = Computer Graphics Metafile.
CHAP = Challenge Handshake Authentication Protocol.
Checksum = Fixed size data (hash sum) algorithm (cryptography).
CHM = Compiled HTML Help (Microsoft Windows 95/98/ME/NT4/2000/XP/2003/Vista/2008/7 + Internet Explorer 5/6/7/8/9/10).
CHS = Cylinder/Head/Sector (hard disk).
CIAC = Computer Incident Advisory Capability team.
CIFS = Common Internet File System.
CISC = Complex Instruction Set Computing (CPU).
CL = Creative Labs Limited.
CLP = Microsoft Windows CLiPboard Bitmap file.
CLV = Constant Linear Velocity (Compact Disk).
CMOS = Complementary Metal Oxide Semiconductor manufacturing process.
CMOS 7S = CMOS 7S manufacturing process (IBM).
CMOS-SOS = CMOS Silicon On Sapphire manufacturing process.
CMP = Chip MultiProcessing (more than 1 CPU per chip).
CMS = ColorSync Color Management System (Apple).
CMYK = Cyan Magenta Yellow blacK (color printing model).
CNR = Communication and Networking Riser specification (Intel Pentium III/IV chipsets).
COA = Certificate Of Authenticity (Microsoft OEM OS + software).
COBOL = COmmon Business Oriented Language.
CODEC = Digital video COmpressor and DECompressor (Intel Indeo).
COFF = Common Object File Format (Unix 32-bit + 64-bit).
COM (1) = Serial COMmunication Port.
COM (2) = Component Object Model (Microsoft).
CON = CONsole (display).
CONFIG.SYS = CONFIGuration SYStem file.
Core = Intel Core CPUs family (x86 Yonah Pentium + Celeron).
Core 2 = Intel Core 2 CPUs family (x86 + x64 Merom/Conroe/Allendale/Penryn/Wolfdale Pentium + Celeron).
Core i3 = Intel Core i3 CPUs family (x86 + x64 Nehalem/Clarkdale/Arrandale).
Core i5 = Intel Core i5 CPUs family (x86 + x64 Nehalem/Lynnfield/Clarkdale/Arrandale).
Core i7 = Intel Core i7 CPUs family (x86 + x64 Bloomfield/Lynnfield/Clarksfield/Arrandale/Gulftown/Nehalem/Westmere/Sandy).
cps = Characters Per Second.
CPT = Corel Photo Paint image file format.
CPU = Central Processing Unit (processor).
CRC = Cyclical Redundancy Check.
CRT = Cathode Ray Tube.
CS = CompuServe.
CSLIP = Compressed Serial Line Internet Protocol.
CSP = Cryptographic Service Provider.
CSS = Cascading Style Sheets HTML specifications (W3C).
CSS1 = Cascading Style Sheets mechanism level 1 (W3C).
CSS2 = Cascading Style Sheets mechanism level 2 (W3C).
CUR = Microsoft Windows static CURsor graphic file.
CUT = Dr. Halo picture file.
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D

D3D = DirectX 3D APIs (Microsoft Windows 95/98/2000/ME/XP/2003/Vista/2008/7).
D&D = Dungeons & Dragons games.
DAC = Digital to Analog Converter.
DAT = Digital Audio Tape.
dB = deciBel: 10 dB = 1 Bel.
DBS (1) = Digital Broadcasting System.
DBS (2) = Direct Broadcast Satellite (digital video/audio signal transmitted through geostationary orbiting satellite).
DC = Direct Current (continuous electrical current).
DCE (1) = Distributed Computing Environment networking software system (Apollo/IBM/DEC).
DCE (2) = Data Communications Equipment (modem to modem speed).
DDC = Display Data Channel.
DD-CD = Double Density Compact Disk: 1.3 GB (Sony).
DDE = Dynamic Data Exchange.
DDF = Diamond Directive File (Microsoft Windows Setup CAB/IEAK developer kits).
DDK = Driver Developers Kit (programming).
DDMA = Distributed Direct Memory Access technology.
DD-R = Double Density Compact Disk Recorder (Sony).
DD-ROM = Double Density Compact Disk Read Only Media (Sony).
DD-RW = Double Density Compact Disk Rewritable (Sony).
DDoS = Distributed Denial of Service (networks).
DDR-SDRAM = Double Data Rate Synchronous Dynamic Random Access Memory.
DDSS = Dolby Digital Surround Sound Advanced Codec 3 5.1 (5 + 1 = 6 channels) sound technology (3D audio).
DEK = Data Encryption Key.
DES = Data Encryption Standard.
DFS = Distributed File System used by Distributed Computing Environment (DCE) (Apollo/IBM/DEC).
DHCP = Dynamic Host Configuration Protocol.
DHTML = Dynamic HyperText Markup Language (W3C).
DIB (1) = RGB/RLE encoded Microsoft Windows Device Independent Bitmap.
DIB (2) = Dual Independent Bus architecture (Intel Pentium Pro/II/III/IV).
DIFx = Driver Install Frameworks technology (Microsoft).
DIG = Digital Imaging Group (now I3A).
DIMM = Dual In-line Memory Module.
DIN = Deutsches Institut für Normung (German Institute for Standards).
DIP = Dual In-line Package.
DisplayID = display/monitor data structure description (VESA standard) (also EDID).
DIVX (1) = DIgital Video eXpress (discontinued Digital Versatile Disk technology).
DivX (2) = Digital Video eXpress encoder/decoder technology.
DIY = Do It Yourself (computer building, improving + repairing by hand).
DLC = Data Link Control (networking layer protocol).
DLL = Dynamic Link Library (Microsoft Windows).
DLNA = Digital Living Network Alliance (Microsoft/Hewlett Packard/Sony/Nokia/Philips/Cisco/Toshiba/Samsung).
DLP = Digital Light Processing technology, also DMD (Texas Instruments).
DLS = DownLoadable Sounds technology (PCI MIDI).
DMA = Direct Memory Access.
DMD = Digital Micromirror Device, also DLP (Texas Instruments).
DME = Direct Memory Execution (Intel I-740).
DMF = Distribution Media Format: high density Floppy Disk (Microsoft).
DMI = Desktop Management Interface.
DMTF = Desktop Management Task Force.
DNA = Distributed interNet Applications architecture (Microsoft Windows).
DNS = Domain Name System (or Service) (Internet DN → IP translator).
DOCSIS = ITU J.112 Data Over Cable Service Interface Specification.
DOF = Depth Of Field (3D video).
DOM = Document Object Model (W3C).
DOS (1) = Disk Operating System.
DoS (2) = Denial of Service (networks).
DPI = Dots Per Inch.
DPLSS = DPLSS = Dolby Pro Logic Surround Sound 4.1 (4 + 1 = 5 channels) sound technology (3D audio).
DPMA = Dynamic Power Management Architecture (Intel PCI/AGP chipsets).
DPMI = DOS Protected Mode Interface.
DPMS = VESA Display Power Management Signaling (video).
DRAM = Dynamic Random Access Memory.
DR-DOS = DeviceLogics (Caldera Digital Research) Disk Operating System.
Drive-TIP = Drive Temperature Indicator Processor (IBM hard drive).
DRM = Digital Rights Management copy protection technologies.
DRP = Distribution and Replication Protocol.
DRW = Micrografx DRaW image file.
DS3D = DirectSound 3D APIs (Microsoft Windows 95/98/2000/ME/XP/2003).
DSC = Digital Servo Control (Toshiba CD-ROM).
DS/DD = Double Sided Double Density (Floppy Disk technology: 720 KB).
DS/HD = Double Sided High Density (Floppy Disk technology: 1.44 MB).
DSL = Digital Subscriber Line modem technology.
DSP (1) = Digital Signal Processor.
DSP (2) = Delivery Service Partner (OEM).
DSRC = Dedicated Short Range Communication technology, also RFID.
DSS (1) = Digital Satellite System.
DSS (2) = Digital Signature Standard certificate.
DSVD = Digital Simultaneous Voice and Data.
DTD = Document Type Definition.
DTE = Data Terminal Equipment (modem to computer speed).
DTF = Distributed Terascale Facility high speed TeraGrid network (IBM/Qwest/Intel).
DTP = DeskTop Publishing.
DTR (1) = Data Transfer Rate (throughput).
DTR (2) = Discrete Track Recording (Toshiba hard disk).
DTS = Digital Theater Surround discrete Dolby Digital 5.1 (5 + 1 = 6 channels) sound technology (3D audio).
DTS-ES = Digital Theater Surround Extended Surround discrete Dolby Digital 6.1 (6 + 1 = 7 channels) sound technology (3D audio).
DTS-HD = Digital Theater Surround High Definition discrete Dolby Digital 7.1 (7 + 1 = 8 channels) sound technology (3D audio).
DTV (1) = DeskTop Video.
DTV (2) = Digital Broadcast TeleVision.
DualDisc = Digital Versatile Disk (Audio)/Compact Disk two sided hybrid (Sony).
DUN = Dial-Up Networking (Microsoft Windows).
DVD = Digital Versatile (Video) Disk.
DVD-2 = Second generation Digital Versatile Disk drive.
DVD-A = Digital Versatile Disk Audio.
DVD-R = Digital Versatile Disk Recordable 4.7 GB (Hitachi/NEC/Pioneer/Samsung/Sharp).
DVD-RAM = Digital Versatile Disk Rewritable Access Media.
DVD-ROM = Digital Versatile Disk Read Only Media.
DVD-RW = Digital Versatile Disk ReWritable 4.7 GB (Hitachi/NEC/Pioneer/Samsung/Sharp).
DVD+R = Digital Versatile Disk Recordable 4.7 GB (Philips/Mitsubishi/Sony/Ricoh/Yamaha).
DVD+RW = Digital Versatile Disk ReWritable 4.7 GB (Philips/Mitsubishi/Sony/Ricoh/Yamaha).
DVD+R DL = Digital Versatile Disk ReWritable Double Layer 8.5 GB (Philips/Mitsubishi).
DVI = Digital Video Interactive (Intel).
DVVD = Direct View Video Display (CRT/TV display).
DX (1) = X86 Intel CPU with FPU (386/DX, 486/DX).
DX (2) = DirectX APIs (Microsoft Windows 95/98/2000/ME/XP/2003/Vista/2008/7).
DX3D = DirectX 3D APIs (Microsoft Windows 95/98/2000/ME/XP/2003/Vista/2008/7).
DXF = AutoDesk picture File.
DXR2 = Dynamic eXtended Resolution 2 technology (Creative Labs DVD).
DXTC = S3 Direct3D Texture Compression APIs (S3 Savage3D/2000).
DXVA = DirectX Video Acceleration hardware video decoding (Microsoft Windows 98/2000/XP/2003/Vista/2008/7).

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E

EAX = Environmental Audio EXtensions (Creative Labs Live!/Audigy/Extigy/X-Fi DirectSound 3D surround sound APIs).
EBDA = Extended BIOS Data Area.
EBIOS = Extended Basic Input/Output System.
EBML = Extensible Binary Meta Language (binary equivalent to XML).
ECC = Error Correction Code.
ECHS = Enhanced Cylinder/Head/Sector (hard drive > 1024 cylinders).
ECP = Extended Capabilities Port.
EDC = Error Detection Code.
EDGE = Explicit Data Graph Execution architecture (IBM CPUs).
EDI = Electronic Data Interchange.
EDID = Extended Display Identification Data (VESA standard) (also DisplayID).
EDO = Extended Data Out (DRAM).
EDRAM = Enhanced Dynamic Random Access Memory.
EECS = Enhanced Elliptical Correction System (Sony CRT).
EEPROM = Electrically Erasable Programmable Read Only Memory.
EFI = Extensible Firmware Interface BIOS technology (Intel).
EGA = Extended Graphics Adapter.
EIA = Electronics Industries Association.
EICA = Enhanced Intellight Cooler Architecture.
EIDE = Enhanced Integrated Device Electronics (Hard Disk Drive interface).
EISA = Extended Industry Standard Architecture.
EISCA = Enhanced Intelligent System Cooler Architecture (CPU heatsink).
ELF = Executable (Extensible) and Linkable file Format (Unix/Linux/BSD/Solaris 32-bit).
E-mail = Electronic mail (email).
EMB = Extended Memory Block.
EMBM = Environment Mapped Bump Mapping (Matrox G400/G800 3D chipsets).
EMI = Electro-Magnetical Interference.
EMM = Expanded Memory Manager.
EMM386 = Microsoft 386 Expanded Memory Manager (EMM386.EXE).
EM64T = Extended Memory 64-bit Technology (Intel 64-bit CPUs).
EMS = Expanded Memory Specifications.
EOL = End of Life (product).
EOS = End of Sale (product).
EPA = Environmental Protection Agency (USA).
EPIC = Explicitly Parallel Instruction Computing (Intel Itanium 2 CPUs).
EPP = Enhanced Parallel Port.
EPROM = Erasable Programmable Read Only Memory.
EPS = Encapsulated PostScript File.
ESCD = Extended System Configuration Data (ROM BIOS).
ESD = ElectroStatic Discharge.
ESDI = Enhanced System Device Interface (hard disk).
ESDRAM = Enhanced Synchronous Dynamic Random Access Memory.
ESP = E-mail Service Provider.
EULA = End User License Agreement (Microsoft).
EUV = Extreme UltraViolet lithography (CPU).
EVD = Enhanced Versatile (Video) Disk (China).
EVR = Enhanced Video Renderer hardware video decoding (Microsoft Windows Vista/2008/7).
ExFAT = Extended File Allocation Table 64-bit (SSD + flash RAM drives).
ext = Linux extended File System (old standard).
ext2 = Linux extended File System v2.0 (new standard).

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F

FAST-20 = Fast SCSI-3 Parallel Interface technology.
FAT = File Allocation Table disk File System (Microsoft).
FAT12 = File Allocation Table 12-bit (MS-DOS 3.0x/4.0x).
FAT16 = File Allocation Table 16-bit (MS-DOS 5.00/6.xx).
FAT32 = File Allocation Table 32-bit (Windows 95B/95C/98/ME/2000/XP/2003/Vista/2008/7).
FATA = Fibre Attached Technology Adapted Hard Disk Drive interface (Seagate/Hewlett Packard).
FB-DIMM = Fully Buffered Dual In-line Memory Module.
FCBS = File Control BlockS (Microsoft MS-DOS).
FC-AL = Fibre Channel Arbitrated Loop (Ultra Fast SCSI).
FCC = Federal Communications Commission (USA).
FC-PGA = Flip Chip Pin Grid Array package (Intel Pentium III/IV CPUs).
FC-PH = Fibre Channel PHysical and signaling interface (SCSI-3).
FD = Floppy Disk.
FDB = Fully Buffered DIMM Dynamic Random Access Memory technology (Intel Blackford Pentium IV chipsets).
FDC = Floppy Drive Controller.
FDD = Floppy Disk Drive.
FDDI = Fiber Distributed Data Interface.
FED = Field Emission Display.
FERAM = FerroElectric Dynamic Random Access Memory (Infineon/Toshiba).
FIFO = First In First Out.
FMD = Fluorescent Multilayer Optical technology (Constellation 3D).
FMD-ROM = Fluorescent Multilayer Disk Read Only Media (Constellation 3D 140 GB CD-ROM).
FMV = Full Motion Video.
FPD = Flat Panel Display.
FPE = File Protection Error.
FPM = Fast Page Mode (DRAM).
fps (1) = frames per second.
FPS (2) = First Person Shooter game.
FPTV = Front Projection TeleVision (TV display).
FPVD = Front Projection Video Display (TV display).
FPU = Floating Point Unit (coprocessor).
FRAM = Ferroelectric Random Access Memory.
Frame-buffer = 1st + 2nd dimensions/height + width/x + y axes memory (2D video).
FSAA = Full Screen Anti-Aliasing edge smoothing (3D video).
FSB = Front Side Bus (CPU to I/O motherboard bus).
FSF = Free Software Foundation (GNU).
FTP = File Transfer Protocol.
Full-Duplex = Two way modem communication protocol (echo-plex).
FXT1 = Advanced Texture Compression technology (3dfx Voodoo4/5/6 3D video).
FYI = For Your Information.

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G

GB = GigaByte (1 GB = 1,024 MegaBytes = 1,048,576 KiloBytes).
GBps = GigaBytes per second.
gbps = gigabits per second.
GDDR-II = Graphics Double Data Rate Random Access Memory 2nd generation (NVIDIA GeForceFX).
GDDR-III = Graphics Double Data Rate Random Access Memory 3rd generation (ATI Radeon 9500/9700/9900).
GDI = Graphics Device Interface (Microsoft Windows).
GDR-SDRAM = Gigabyte Data Rate Synchronous Dynamic Random Access Memory.
GEM = Ventura/GEM image file.
GIF = Graphics Interchange Format file (CompuServe).
Glide = 3dfx Voodoo family proprietary 3D APIs.
G.Lite = ITU G.992.2 1.4 Mbps Digital Subscriber Line modem technology (ADSL).
GM = General MIDI technology.
GMR = Giant Magneto-Resistive effect (IBM hard drive technology).
GMT = Greenwich Mean Time (renamed UTC) international time standard.
GNU = GNU's Not UNIX.
GPF = General Protection Fault (Microsoft Windows).
GPL = General Public License (GNU).
GPT = GUID Partition Table (hard disk partition table layout).
GPU = Graphics Processing Unit (NVIDIA GeForce family 2D/3D chipsets).
GTS = Giga Texel Shader (NVIDIA GeForce2/newer 3D technology).
GUI = Graphical User Interface (2D/3D computer/terminal/device platform interface) (also GUI).
GUID = Globally Unique IDentifier 16-byte (128-bit) unique number (Microsoft software and hardware identification standard) (also IID + UUID).
GVIF = Gigabit Video InterFace (Sony LCD).

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H

HAL = Hardware Abstraction Layer (Microsoft Direct3D virtual 3D video accelerator interface APIs).
Half-Duplex = One way modem communication protocol (simplex or local-echo).
HAVi = Home Audio Video interoperability (entertainment APIs).
HD (1) = Hard Disk (Drive).
HD (2) = High Definition.
HDA = High reliability Hard Disk Assembly.
HD Audio = High Definition Audio (Intel).
HD VMD = High Definition Versatile Multilayer Disc technology (New Medium Enterprises).
HD-BURN = 1.4 GB CD-R/CD-RW technology (Sanyo).
HD-DVD = High Definition Digital Versatile Disk discontinued technology (Toshiba/NEC/Sanyo/Memory-Tech).
HDC = Hard Disk Controller.
HDCP = High bandwidth Digital Content Protection (Intel/Silicon Image).
HDD = Hard Disk Drive.
HDMI = High Definition Multimedia Interface digital surround audio and video interface (Hitachi/Matsushita/Philips/Sony/RCA/Toshiba).
HD-ROM = High Definition Read Only Media (Norsam Technology).
HD-SDI = High Definition Serial Digital Interface.
HDSL = High bit rate Digital Subscriber Line modem technology.
HDSS = Holographic Data Storage System (IBM).
HDTV = High Definition TeleVision (new digital TV standard: 1200 lines).
HDVD = High Definition Digital Video Disk (Sonic/Ravisent).
HDVP = High Definition Video Processor (NVIDIA GeForce2/3/4/FX 3D video chipsets).
HEL = Hardware Emulation Layer (Microsoft Direct3D virtual 3D video rasterization device).
HFC = Hybrid Fiber Coaxial cable system.
HFS = Hierarchical File System (MacOS CD-ROM).
HGL = Hewlett Packard Graphics Language image file.
HID = Human Interface Devices (computer peripherals).
HiDef = High Definition 24 frames/second progressive video (Sony/Panasonic) (also 24p).
HiFD = High density 200 MB Floppy Disk Drive technology (Sony/Fuji).
Hi-Fi = High Fidelity (audio/video technology).
HIMEM = Microsoft HIgh/Extended MEMory Manager (HIMEM.SYS).
HIPPI = HIgh Performance Parallel Interface (ANSI X3T9.3 technology).
HIPS = Host based Intrusion Prevention Systems (computer security monitoring).
HLSL = High Level Shader Language (Microsoft DirectX 9 programming).
HKMG = High K Metal Gate dielectric (transistor technology) (Intel).
HMA = High Memory Area.
HP = Hewlett Packard Corporation.
HPC = Handheld Personal Computer.
HPFS = High Performance File System (OS/2).
HSDRAM = High Speed Synchronous Dynamic Random Access Memory.
HSF = Heat Sink and Fan combo (computer components cooling).
HSI = High Speed Interconnect (CERN).
HSR = Hidden Surface Removal 3D polygon rendering (NVIDIA GeForce2/newer + 3dfx Voodoo5/6 3D video).
HTA = HTML Application (Microsoft Windows 95/98/ME/NT4/2000/XP/2003/Vista/2008/7 + Internet Explorer 5/6/7/8/9/10).
HTML = HyperText Markup Language (W3C).
HTML 4.01 = HyperText Markup Language 4.01 standard (W3C).
HTML5 = HyperText Markup Language 5.0 standard (W3C).
HTPC = Home Theater Personal Computer.
HTT = HyperText Template (Microsoft Windows 95/98/ME/NT4/2000/XP/2003/Vista/2008/7 + Internet Explorer 5/6/7/8/9/10).
HTTP = HyperText Transfer Protocol standard.
HTTPS = HyperText Transfer Protocol Secure standard (SSL + TLS technologies).
HVD (1) = High Voltage Differential technology (SCSI-2).
HVD (2) = Holographic Versatile Disk technology 1 TB (Optware).
HMC-DRAM = Hybrid Memory Cube Dynamic Random Access Memory (Samsung/Micron/Altera).
HyperTransport = I/O bus architecture: 64-bit, 133/266 MHz, 6.4 GB/sec (AMD).
Hz = Hertz (clock speed). 1 Hz = 1 clock cycle.

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I

i-MLSE = Maximum Likelihood Sequence Estimation (Sony/Panasonic Blu-Ray Disc Drive technology).
I2O = Intelligent Input/Output (I2O) specification (Intel).
I3A = International Imaging Industry Association (DIG + PIMA).
IA-32 = Intel Architecture 32-bit (32-bit CPUs).
IA-64 = Intel Architecture 64-bit (high end 64-bit CPUs).
IANA = Internet Assigned Numbers Authority.
IBM = International Business Machines Corporation.
IC = Interface Controller.
ICANN = Internet Corporation for Assigned Names and Numbers.
ICD = Installable Client Driver (Microsoft 3D video).
ICMP = Internet Control Message Protocol.
ICMPv6 = Internet Control Message Protocol version 6.
ICO = ICOn graphic file (Microsoft Windows).
ICP = Internet Content Provider.
ICS = Internet Connection Sharing.
IDCT = Inverse Discrete Cosine Transform (Digital Versatile Disk decoding).
IDE (1) = Integrated Device (Drive) Electronics (Hard Disk Drive interface).
IDE (2) = Integrated Development Environment (software development).
IDPS = Intrusion Detection and Prevention Systems (computer security monitoring).
IE = Microsoft Internet Explorer web browser (IEXPLORE.EXE).
IEAK = Microsoft Internet Explorer Administration Kit (Microsoft Windows Setup IExpress developer kit).
IEC = International Electrotechnical Commission.
IEEE = Institute of Electrical and Electronics Engineers.
IEEE 1394 = Institute of Electrical and Electronics Engineers FireWire peripheral devices high performance serial bus technology.
IETF = Internet Engineering Task Force.
IFF = Electronic Arts Image File.
IFSHLP.SYS = Installable File System HeLPer device driver (Microsoft Windows).
IGMP = Internet Group Management Protocol.
IH-BD = Intra Hybrid Blu-Ray Disc: 1 BD-ROM (Blu-Ray Disc Read Only Media) layer + 1 BD-RE (Blu-Ray Disc Rewrite) layer [single layer (25 GB)].
IHS = Integrated Heat Spreader technology (Intel X3x chipsets).
IID = Interface IDentifier 16-byte (128-bit) unique number (software and hardware identification standard) (also GUID + UUID).
IMA = Interactive Music Architecture (Microsoft).
IMAP = Internet Message Access Protocol (e-mail retrieval).
IMAP4 = Internet Message Access Protocol version 4 (e-mail retrieval).
IMG = GEM Paint image file.
INF = Setup INFormation File (Microsoft Windows Setup).
Intel = Intel Corporation.
InterNIC = Internet Network Information Center.
I/O = Input/Output.
ION = Integrated On-demand Network (Sprint FastBreak).
IP = Internet Protocol.
IPF = Invalid Page Fault (Microsoft Windows).
IPTV = Internet Protocol TeleVision (Microsoft).
IPv4 = Internet Protocol version 4 (RFC791, 32-bit).
IPv6 = Internet Protocol version 6 (RFC1883, 128-bit).
IPX = Internetwork Packet EXchange (Novell Netware).
IRC = Internet Relay Chat.
IrDA = Infrared Data Association.
IRQ = Interrupt ReQuest line.
ISA (1) = Industry Standard Architecture.
ISA (2) = Instruction Set Architecture (computer architecture -> programming).
iSCSI = Internet Small Computers System Interface protocol (IETF).
ISDN = Integrated Services Digital Network.
ISEF = Instruction Set Extension Fabric (Stretch CPUs).
ISF = Imaging Science Foundation (video display technologies).
ISN = Integrated Silicon Nanophotonics CMOS transistor technology (IBM).
ISO = International Organization for Standardization (Organisation Internationale de Normalisation).
ISO 9660 = International Standard LOgical CD-ROM format (High Sierra).
ISP = Internet Service Provider.
ISV = Independent Software Vendor.
IT = Information Technology (computing industry).
ITU = International Telecommunications Union (Union Internationale des Télécommunications).

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J

Java = Sun Microsystems programming language.
JAR = Java ARchive file.
JDK = Java Developers Kit.
JEDEC = Joint Electronic Device Engineering Council.
JFC = Java Foundation Classes.
JFS = Journaling File System (Linux OS).
JIF = Joint Photographers Expert Group Image file.
JPEG = Joint Photographers Expert Group Picture format.
JPG = Joint Photographers Expert Group Picture file.
JVM = Java Virtual Machine (Microsoft Windows).

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K

K56flex = Lucent/Rockwell 56 kbps analog modem transfer technology.
KB = KiloByte (1 KB = 1,024 Bytes).
KBps = KiloBytes per second.
kbps = kilobits per second.
KNI = Intel Pentium III/IV CPUs 70 MMX extensions (SSE/SSE2).

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L

L1 = Level 1 cache (on CPU).
L2 = Level 2 cache (off CPU).
L2TP = Layer 2 Tunneling Protocol.
L3 = Level 3 cache (off CPU SMP).
LAN = Local Area Network.
LAPM = Link Access Protocol for Modems.
LBA = Logical Block Addressing (Hard Disk Drive access).
LBM = DeLuxe Paint BitMap picture file.
LCD = Liquid Crystal Display (digital display).
LCoS = Liquid Crystal on Silicon (digital display).
LDAP = Lightweight Directory Access Protocol.
LDIF = Lightweight Data Interchange Format (e-mail exchange technology).
LE = Linear Executable file format (DOS/Windows/WfWG 3.xx/95/98/ME 16-bit or 32-bit).
LED = Light Emitting Diode.
LEP = Light Emitting Polymers technology (CDT monitor).
LFB = Linear Frame Buffer (2D video).
LFN = Long File Name (256.8 = Win32/Win64 32-bit).
LFO = Low Frequency Oscillator.
LH = LoadHigh (Microsoft MS-DOS).
LIM = Lotus, Intel and Microsoft expanded/extended memory specifications.
LIMAD = LInear MAgnetic Drive speaker technology (Soundmatters).
Linux = Linus Torvalds' GPL (free, open source) Operating System based on Unix OS.
LMDS = Local Multipoint Distribution Service.
LPC = Low Pin Count interface specification (Intel).
LPT = Line PrinTer.
LTO = Linear Tape-Open technology (IBM/Hewlett Packard/Seagate).
LVD = Low Voltage Differential (SCSI-2).
LZ77 = Lempel and Ziv 1977 compression algorithm.
LZMA = Lempel, Ziv and Markov chain compression Algorithm (7-Zip/7Z format).
LZW = Lempel, Ziv and Welch compression algorithm (GIF graphic format).
LZX = Lempel and Ziv eXtended compression algorithm (Microsoft CAB format).

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M

MAC (1) = Media Access Control address (networked hardware unique ID).
MAC (2) = MAC Paint picture file.
MacOS = MacIntosh Operating System (Apple).
MalWare = Malicious softWare (spyware, trojan, virus, worm, zombie etc).
MAN = Metropolitan Area Network.
MAPI = Messaging Application Programming Interface (Microsoft e-mail).
MB = MegaByte (1 MB = 1,024 KiloBytes = 1,048,576 bytes).
MBOA = Multiband OFDM Alliance (UWB technologies).
MBps = MegaBytes per second.
mbps = megabits per second.
MBR = Master Boot Record (partition table).
MCA = Multilink Channel Aggregation technology (Microsoft Windows).
MCD = Mini Client Driver (Microsoft 3D).
MCGA = MonoChrome Graphics Adapter.
MCI = Media Control Interface.
MCP = Microsoft Certified Professional.
MD5 = Message Digest algorithm 5 128-bit encryption (cryptography).
MDA = Modular Digital Architecture.
MDI = Multiple Document Interface.
MDRAM = Multibank Dynamic Random Access Memory (MoSys).
MFC = Microsoft Foundation Classes (C++ classes library).
MGA = Monochrome Graphics Adapter.
MHTML = MIME Encapsulation of Aggregate HyperText Markup Language Documents (W3C).
MHz = MegaHertz (1 MHz = 1,000 KHz = 1,000,000 Hz).
Microsoft = Microsoft Corporation.
MIDI = Musical Instrument Digital Interface technology.
MIGFET = Multiple Independent Gate Field Effect Transistor (Motorola).
MIME = Multipurpose (Multipart) Internet Mail Extensions.
MIP = Multum In Parvum texture mapping (3D video).
MIPS = Millions of Instructions per Second (CPU).
MIT = Massachusetts Institute of Technology.
MLA = Modern Languages Association.
MLPPP = MultiLink Point to Point Protocol.
ML-R = MultiLevel Compact Disk Recorder 2 GB (TDK).
ML-RW = MultiLevel Compact Disk ReWritable 2 GB (TDK).
MMA = MIDI Manufacturers Association.
MMOFPS = Massively Multiplayer Online First Person Shooter game.
MMOG = Massively Multiplayer Online Game.
MMORPG = Massively Multiplayer Online Role Playing Game.
MMVF = MultiMedia Video Format (NEC DVD).
MMX = MultiMedia eXtensions (Intel Pentium/Pentium Pro CPUs 57 instructions).
MMX2 = Intel Pentium II/III/IV CPUs MultiMedia eXtensions 2nd generation (see KNI).
MO = Magneto-Optical drive.
modem = MOdulator/DEModulator (data to analog/digital converter/transmitter/receiver).
MODS = Multiplexed Optical Data Storage 1 TB CD/DVD technology (Imperial College London).
MOV = QuickTime MOVie file (Apple).
MP3 = MPEG-1 Audio Layer 3 compression/format technology.
MPC = Multimedia Personal Computer.
MPEG = Motion Picture Expert Group.
MPEG-1 = Motion Picture Expert Group v1 audio/video compression technology.
MPEG-2 = Motion Picture Expert Group v2 audio/video compression technology.
MPEG-4 = Motion Picture Expert Group v4 audio/video compression technology.
MPG = Motion Picture Expert Group compressed image file format.
MPGA = Micro Pin Grid Array (370 pin Intel CPU).
MR = Magneto-Resistive head technology (Hard Disk Drive).
MRAM = Magneto-Resistive Random Access Memory (IBM/Infineon).
MRX = Magneto-Resistive EXtended head technology (IBM Hard Disk Drive).
µs = Microsecond (1/1,000,000 = 1 millionth of a second).
MS = MicroSoft Corporation.
MS-DOS = MicroSoft Disk Operating System.
MSCDEX = MicroSoft Compact Disk EXtensions device driver (MSCDEX.EXE).
MSD = MicroSoft Diagnostics (MSD.EXE).
MS IE = MicroSoft Internet Explorer web browser (IEXPLORE.EXE).
MSKB = MicroSoft Knowledge Base.
MSP = MicroSoft Paint picture file.
MSRP = Manufacturer Suggested Retail Price.
MSS = Maximum Segment Size (Internet protocol).
MTBF = Mean Time Between Failures. Measured in hours (computer components).
MTOM = Message Transmission Optimization Mechanism (W3C).
MTT = MultiTransaction Timer (PCI).
MTTF = Mean Time To Failure. Measured in hours (computer components).
MTTR = Mean Time To Repair. Measured in hours (computer components).
MTU = Maximum Transmission Unit (Internet protocol).
MUD = MultiUser Domain.
MVA = Multidomain Vertical Alignment technology (LCD screen).
MVP = Microsoft Most Valuable Professional.
MZ = Mark Zbikowski DOS executable file format (DOS 16-bit).

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N

NAC = Network Admissions Control technology (Cisco).
NAK = Negative AcKnowlegement (modem response).
NAND = Negated AND, NO AND electronic logic gate (NAND flash memory).
NAP = Network Access Protection technology (Microsoft).
NAT = Network Address Translation (networking technology).
NBA = Network Behavior Analysis (network traffic monitoring).
NC = Network Computer.
NCQ = Native Command Queuing protocol (Serial ATA Hard Disk Drive).
NDI = Network Device Interface (networking).
NDIS = Network Driver Interface Specification layer (networking) (Microsoft/3Com).
NE = New Executable file format (DOS/Windows/WfWG 3.xx 16-bit).
NetBEUI = NetBios Extended (Enhanced) User Interface (networking).
NetBIOS = Network Basic Input Output System (LAN APIs).
NetRoom = Helix Software 386 Expanded Memory Manager (RM386.EXE).
NFC = Near Field Communication (simplified data exchange standard).
NFP = Not For Profit.
NFS = Network File System.
NGI = Next Generation Internet foundation.
NIC (1) = Network Interface Card.
NIC (2) = Networked Information Center.
NIPS = Network based Intrusion Prevention Systems (network security monitoring).
NIST = National Institute of Standards and Technology (USA).
NLP = Natural Language Processing.
NNTP = Network News Transfer Protocol (USENET messaging).
NOS = Network Operating System.
NRAM = Non-volatile Random Access Memory, also NVRAM.
ns = Nanosecond (1/1,000,000,000 = 1 billionth of a second).
NSR = NVIDIA Shading Rasterizer (GeForce2/3/4/FX 3D chipsets).
NTFS = New Technology File System 32-bit (Windows NT/2000/XP/2003/Vista/2008/7).
NTP = Network Time Protocol (atomic clock server technology).
NTSC = National Television Systems Committee (USA TV standard: 525 lines).
NVIDIA = NVIDIA Corporation.
NVRAM = Non Volatile Random Access Memory, also NRAM.

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O

OAW = Optically Assisted Winchester hard disk technology (Seagate).
OCR = Optical Character Recognition.
ODBC = Open DataBase Connectivity.
ODI = Open Data-Link Interface (networking) (Apple/Novell).
OEM = Original Equipment Manufacturer.
OGL = OpenGL (see OpenGL).
OLE = Object Linking and Embedding (Microsoft Windows).
OLED = Polymer Organic Light Emitting Diode display (Toshiba).
OLGA = Organic Land Grid Array (Intel Pentium III CPU).
OLPC = One Laptop Per Child foundation.
ONFI = Open NAND Flash Interface Working Group (NAND flash memory standards).
OOB = Out Of Band.
OpenGL = Silicon Graphics Open Graphical Language technology (32-bit 3D graphics/video architecture layout/APIs).
OpenGVS = Open Gemini Visual System 3D APIs technology.
OPS = Open Profiling Standard.
OS = Operating System (computer boot + core software interface).
OS/2 = IBM Operating System/2.
OSD (1) = Open Software Distribution.
OSD (2) = On Screen Display.
OSDN = Open Source Technology Group (formerly Open Source Developers Network).
OSI = Open Systems Interconnection model (communications system layering) (ISO standard).
OSR1 = Microsoft Windows 95a OEM Service Release 1.
OSR2 = Microsoft Windows 95B/95C OEM Service Release 2.0/2.1/2.5.
OSR 2.0 = Microsoft Windows 95B OEM Service Release 2.0.
OSR 2.1 = Microsoft Windows 95B OEM Service Release 2.1.
OSR 2.5 = Microsoft Windows 95C OEM Service Release 2.5.
OSR 2.x = Microsoft Windows 95B/95C OEM Service Release 2.x.
OSTA = Optical Storage Technology Association.
OSTG = Open Source Technology Group (formerly Open Source Developers Network).
OTF = OpenType Font cross platform format (Adobe/Microsoft).

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P

P II = Intel Pentium II CPU (80686 Klamath/Deschutes Xeon + Celeron).
P III = Intel Pentium III CPU (80686 Katmai/Coppermine/Tualatin Xeon + Celeron).
P IV = Intel Pentium IV CPU (80686 Willamette/Northwood Xeon + Celeron).
P3P = Platform for Privacy Preferences (W3C).
P5 = Intel Pentium/Pro CPU (80586).
P6 = Intel Pentium II/III/IV CPU (80686).
PAE = Physical Address Extensions (Intel 8XX chipsets with > 4 GB RAM).
PAL = Phase Alternate Line (European TV standard: 625 lines).
Panose = Typeface font matching system (Hewlett Packard).
PAP = Password Authentication Protocol.
PAT (1) = Port Address Translation (network/Internet IP address).
PAT (2) = Performance Acceleration Technology (Intel 865/875 Pentium IV chipsets).
PATA = Parallel Advanced Technology Attachment Hard Disk Drive.
PBC = Pipeline Burst Cache.
PBM = Portable BitMap UNIX picture file.
PBSRAM = Pipeline Burst Static Random Access Memory (Intel CPU L2 cache).
PC = Personal Computer (a.k.a. IBM PC/AT clone).
PC99 = PC 1999 System Design Guide (Intel/Microsoft).
PCAV = Progressive Constant Angular Velocity (Compact Disk).
PCB = Printed Circuit Board.
PCD (1) = Kodak Photo CD image file.
PCD (2) = Protein-Coated Disc optical storage technology (Harvard Medical School/NEC).
PCI = Peripheral Component Interconnect bus architecture: 32-bit 33/66 MHz (Intel).
PCI 2.1 = Peripheral Component Interconnect 2.1 technology: 32-bit 33/66 MHz (Intel).
PCI 2.2 = Peripheral Component Interconnect 2.2 technology: 32-bit 33/66/133 MHz (Intel).
PCI 3.0 = Peripheral Component Interconnect 3.0 technology (3GIO or PCI Express): 64-bit 133/266 MHz 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell).
PCI Express = Peripheral Component Interconnect Express technology (3GIO or PCI 3.0): 64-bit 133/266 MHz 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell), also PCIe, also PCI-X.
PCI-X = Peripheral Component Interconnect eXtended bus architecture: 64-bit 133 MHz 6 GB/sec (Intel/Compaq/Hewlett Packard/IBM).
PCI-X 2.0 = Peripheral Component Interconnect eXtended bus architecture: 64-bit 266/533 MHz 12/24 GB/sec (Intel/Compaq/Hewlett Packard/IBM).
PCI-X 3.0 = Peripheral Component Interconnect eXtended bus architecture: 64-bit 533/1066 MHz 24/48 GB/sec (Intel/Compaq/Hewlett Packard/IBM).
PCIe = Peripheral Component Interconnect Express technology (3GIO or PCI 3.0): 64-bit 133/266 MHz 6.6 GB/sec (Intel/IBM/Compaq/Microsoft/Dell), also PCI Express, also PCI-X.
PCL = Printer Control Language.
PCM = Pulse Code Modulation.
PCMCIA = Personal Computer Memory Card International Association.
PCS = Personal Communications Service.
PCX (1) = Zsoft PC Paintbrush Picture file.
PCX (2) = 3GIO or PCI Express or PCIe (see above).
PDA = Personal Digital Assistant.
PDF = Portable Document Format file (Adobe Acrobat).
PDP = Parallel Data Processing (Intel I-740).
PE = Portable Executable file format (Microsoft Windows 32-bit + 64-bit and ReactOS).
pel = Picture ELement: RGB 3 dot pattern (color TV), also pixel.
Pentium = Intel Pentium CPU (80586).
Pentium Pro = Intel Pentium Pro CPU (80586).
Pentium II = Intel Pentium II CPU (80686 Klamath/Deschutes Xeon + Celeron).
Pentium III = Intel Pentium III CPU (80686 Katmai/Coppermine/Tualatin Xeon + Celeron).
Pentium IV = Intel Pentium IV CPU (80686 Willamette/Northwood Xeon + Celeron).
PERL = Practical Extraction and Report Language (programming).
PFPT = Pure Flat Picture Tube.
PGM = Portable GrayMap UNIX picture file.
PGP = Pretty Good Privacy (encryption scheme).
PHP = Hypertext PreProcessor (free, open source) scripting HTML language (dynamic, server based).
PIC (1) = Programmable Interrupt Controller.
PIC (2) = Lotus PICtor/PC Paint picture file.
PID = Product IDentification number (Microsoft OS + software).
PIF = Program Information File (Microsoft Windows).
PII = Personally Identifiable Information (information technology security).
PIM = Personal Information Manager.
PIMA = Photographic and Imaging Manufacturers Association (now I3A).
PING = Improperly called Packet InterNet Groper (network/Internet packet transmitting/receiving tool).
PIO = Programmed Input/Output.
pixel = PIcture ELement: RGB 3 dot pattern (color CRT), also pel.
PLC = Power Line Communications technology (networking/Internet broadband).
PLEDM = Phase-state Low Electron Drive Memory (Hitachi).
PLGA = Plastic Land Grid Array (Intel Pentium II CPU).
PLL = Phase Locked Loop (CPU clock multiplier chip).
PMP = Portable Music (Multimedia) Player.
PMTU = Path Maximum Transmission Unit (Internet protocol).
PNG = Portable Network Graphics file.
PNI = Prescott New Instructions (Intel Prescott CPU 13 instructions).
PnP = Plug and Play technology.
POP (1) = Post Office Protocol (e-mail exchange technology).
PoP (2) = Point of Presence.
POP3 = Post Office Protocol version 3 (e-mail exchange technology).
POST = Power On Self Test (BIOS).
POTS = Plain Old Telephone Service.
PPGA = Plastic Pin Grid Array (370 pin Intel Pentium II CPU).
PPI = Precise Pixel Interpolation (Intel I-740 2D/3D chipset).
PPM = Portable PixelMap picture file (UNIX).
PPP = Point to Point Protocol.
PPTP = Point to Point Tunneling Protocol.
PPU = Physics Processing Unit (PhysX Ageia).
PRI = Primary Rate Interface.
PRML = Partial Response Maximum Likelihood (IBM Hard Disk Drive technology).
PRN = PRiNter port.
PS = Personal Server (Intel portable computer).
PS/2 = IBM Personal System/2 computer.
PSD = RGB indexed PhotoShop image file (Aldus).
PSTN = Public Switched Telephone Network.
PVR = Personal Video Recorder (TV analog to digital).
PXE = Preboot eXecution Environment or Pre-eXecution Environment network interface (Intel/Systemsoft).

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Q

QBE = Query By Example.
QDR-SDRAM = Quad Data Rate Synchronous Dynamic Random Access Memory.
QEMM = Quarterdeck Systems 386 Expanded Memory Manager (QEMM386.SYS).
QFHD = Quad Full High Definition 3840x2160 screen resolution (computer monitors + HDTV).
QoS = Quality of Service (Internet server based technology).

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R

RAID = Redundant Array of Inexpensive (Independent) Disks.
RAM = Random Access Memory.
RAMDAC = Random Access Memory Digital to Analog Converter.
RARP = Reverse Address Resolution Protocol.
RAS (1) = Sun Microsystems Raster image file.
RAS (2) = Row Access Strobe.
RAS (3) = Remote Access Service (Microsoft Windows NT/2000/XP/2003).
RAVE = Rendering Acceleration Virtual Engine (Apple).
RAW = Unencoded pixel data image file.
RDF = Resource Description Framework metadata data model (W3C/Netscape).
RDRAM = Rambus Dynamic Random Access Memory.
REG = REGistry file format (Microsoft Windows 9x/NT/2000/ME/XP/2003).
Registry = Microsoft Windows 9x/NT/2000/ME/XP/2003/Vista/2008/7 Registry database.
RegEdit = Microsoft Windows 9x/NT/2000/ME/XP/2003 Registry Editor (REGEDIT.EXE).
RegEdt32 = Microsoft Windows NT/2000/XP/2003 Registry Editor (REGEDT32.EXE).
RFC = Request for Comments.
RFI = Radio Frequency Interference.
RFID = Radio Frequency IDentification technology, also DSRC.
RGB = Red Green Blue picture encoding.
RIA = Rich Internet Application (desktop applications ported to the WWW).
RIFF = Resource Interchange File Format generic file container format (Microsoft/IBM).
RIMM = Rambus Inline Memory Module.
RISC = Reduced Instruction Set Computing (CPU).
RIVA = Real Time Interactive Video and Animation (NVIDIA 3D).
RLE = CompuServe/Microsoft Windows Run Length Encoded graphic file.
RM386 = Helix Software 386 Expanded Memory Manager (RM386.EXE).
ROM = Read Only Memory.
ROT13 = ROTation by 13 letters of the alphabet (encryption scheme).
RPC = Remote Procedure Calls.
RPG = Role Playing Game.
rpm = Rotations Per Minute.
RPTV = Rear Projection TeleVision.
RSA = Rivest, Shamir and Adleman public key encryption algorithms (RSA data security).
RSS = Really Simple Syndication = RDF (Rich) Site Summary (XML news reader).
RTC = Real Time Clock (BIOS).
RTF = Rich Text Format (Microsoft Word document).
RTM = Released To Manufacturing (Microsoft product retail/final/gamma/Gold release).
RTS = Real Time Strategy game.
RTW = Released To Web (Microsoft product retail/final/gamma/Gold release).
RWIN = Receive WINdow (Internet protocol).

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S

S3TC = S3 Texture Compression architecture (S3 Savage3D/2000).
SaaS = Software as a Service, a.k.a. on demand software [via local thin client (web browser) + remote central host (internet cloud server)].
SACD = Super Audio Compact Disk (Sony/Philips).
SAS = Serial Attached SCSI Hard Disk Drive technology.
SATA = Serial Advanced Technology Attachment Hard Disk Drive (Western Digital).
SATA-150 = Serial Advanced Technology Attachment 150 MB/second tranfer rate Hard Disk Drive (Western Digital).
SATA-300 = Serial Advanced Technology Attachment 300 MB/second tranfer rate Hard Disk Drive (Intel).
SBK = EMU Sound Font BanK v1.0 (Creative Labs Sound Blaster sound cards).
Sci-Fi = Science Fiction (genre).
SCSI = Small Computers System Interface Hard Disk Drive technology.
SCSI-1 = Small Computers System Interface 1 specifications.
SCSI-2 = Small Computers System Interface 2 specifications.
SCSI-3 = Small Computers System Interface 3 specifications.
SDDS = Sony Dynamic Digital Sound 7.1 (7 + 1 = 8 channels) theater sound technology (3D audio).
SDK = Software Developers Kit (programming).
SDRAM = Synchronous Dynamic Random Access Memory.
SDS = Satellite Data Service.
SDSL = Symmetrical Digital Subscriber Line modem technology.
SDX = Storage Data Acceleration (Western Digital).
SECAM = SEquential Couleur Avec Mémoire (SEquential Color With Memory) (French TV standard: 625 lines).
SECC = Single Edge Contact Cartridge (Intel Pentium II CPU).
SECC2 = Single Edge Contact Cartridge 2 (Intel Pentium III CPU).
SED (1) = Surface Conduction Electron Emitter flat screen Display (Canon/Toshiba).
SED (2) = Self Extraction Directive File (Microsoft Windows Setup IEAK developer kit).
SEL = Software Emulation Layer (Microsoft Direct3D).
SEPP = Single Edge Processor Package (Intel Celeron CPU).
Serial ATA = Ultra Serial ATA 1500 v1.0 Hard Disk Interface: 1.5 Gb/sec (Western Digital).
SET = Secure Electronic Transaction technology.
SF2 = EMU Sound Font Bank v2.0 (Creative Labs Sound Blaster sound cards).
SFF = Small Form Factor (motherboard form factor).
SFN = Short File Name (8.3 = MS-DOS 16-bit).
SGI = Silicon Graphics Incorporated.
SGML = Standard Generalized Markup Language (W3C).
SGRAM = Synchronous Graphics Random Access Memory.
SHA = Secure Hash Algorithm encryption (cryptography) (NSA).
SHDSL = Single pair High bit rate Digital Subscriber Line modem technology.
SHV = Super Hi-Vision, also UHD, also UHDTV, also UHDV (Nippon Hoso Kyokai/Fujitsu). Digital TV/Video technology, 16:9 (7680x4320 pixels, 4320p), 60 frames/sec, 21 GHz frequency band, 24 Gb/sec uncompressed or 128 Mb/sec MPEG-4 AVC/H.264 compressed signal, 22.2 digital surround audio channels.
SIMD = Single Instruction Multiple Data stream (Intel Pentium CPUs multimedia streaming instructions).
SIMM = Single In-line Memory Module.
SLC = Subscriber Line Charge.
SLDRAM = Synchronous Link Dynamic Random Access Memory (Hyundai).
SL-DRAM = Synchronous Layout Dynamic Random Access Memory (Siemens/Micron).
SLI = Scan Line Interleave technology (2 or more 3dfx Voodoo2/3/4/5/6 chipsets on same video controller).
SLIP = Serial Line Internet Protocol.
SLM = Spatial Light Modulator.
SMART = Self Monitoring Analysis Reporting Technology (hard disk).
SMB = Server Message Block (Microsoft sharing protocol).
SMDS = Switched MultiMegabit Data Service.
SMIL = Synchronized Multimedia Integration Language (W3C).
SMP = Symmetrical MultiProcessing technology.
SMPTE = Society of Motion Picture and Television Engineers.
SMTP = Simple Mail Transfer Protocol (e-mail exchange technology).
SNMP = Simple Network Management Protocol.
S/NR = Signal to Noise Ratio.
SOAP = Simple Object Access Protocol (W3C Internet technology, uses XML).
SO-DIMM = Small Outline Dual Inline Memory Module connector.
SOHO = Small Office/Home Office.
SOI = Silicon On Insulator CPU technology (Intel).
Spam = Unsolicited/unwanted (junk) advertising e-mail.
SPD = Serial Presence Detection (EEPROM).
S/PDIF = Sony/Philips Digital Interchange Format (digital audio surround interface).
SPF = Sender Policy Framework (e-mail exchange technology).
SPI = Stateful Packet Inspection (networking).
SPI-2 = SCSI Parallel Interface 2 technology (SCSI-3).
SPI-3 = SCSI Parallel Interface 3 technology (SCSI-3).
SPP = Standard Parallel Port.
SPTI = SCSI Pass-Through Interface.
SQL = Structured Query Language.
SRAM = Static Random Access Memory.
sRGB = 32-bit Red Green Blue color encoding technology (Microsoft/Hewlett Packard).
sRGB64 = 64-bit Red Green Blue double precision color encoding technology (Microsoft/Hewlett Packard).
SSA = Serial Storage Architecture bus/interface (device/peripheral).
SSD = Solid State memory Disk (flash RAM drives).
SSE = Streaming SIMD Extensions (Intel Pentium III CPUs 70 instructions).
SSE2 = Streaming SIMD Extensions version 2 (Intel Pentium IV CPUs 144 instructions).
SSL = Secure Sockets Layer (secure Internet protocol).
SSLv2 = Secure Sockets Layer version 2 (secure Internet protocol).
SSR = Super Scalar Rendering (3D video).
STA = SCSI Trade Association.
STD/VR = STanDard Voltage Regulator (CPU).
STM = Scanning Tunneling Microscope.
Super AMOLED = Super Active Matrix Polymer Organic Light Emitting Diode display (Samsung).
SVCD = Super Video Compact Disk technology (enhanced MPEG-1 encoding).
SVG = Scalable Vector Graphics XML 2D graphics language (W3C).
SVGA = Super Video Graphics Array standard (800x600 pixels, 600p).
SX = X86 Intel CPU without FPU (386/SX, 486/SX).
SXGA = Super EXtended Graphics Array standard (1400x1050 pixels, 1050p) (also SXVGA).
SXGA+ = Super EXtended Array Plus standard (1280x1024 pixels, 1024p) (also SXVGA+).
SXVGA = Super EXtended Video Graphics Array standard (1400x1050 pixels, 1050p) (also SXGA).
SXVGA+ = Super EXtended Video Graphics Array Plus standard (1280x1024 pixels, 1024p) (also SXGA+).
Sync SRAM = Synchronous burst Static Random Access Memory (CPU L2 cache).

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T

T-Buffer = Multiple Frame Buffer rendering engine (3dfx Voodoo4/5/6 3D).
TAPI= Telephony Application Programming Interface.
TAR = Tape ARchive file format (Linux/Unix).
TB = TeraByte (1 TB = 1,024 GigaBytes = 1,048,576 MegaBytes).
TBS = Turn Based Strategy game.
TCL = Transform, Clipping & Lighting (ATI 3D video).
TCO = Total Cost of Ownership (business IT).
TCP = Transmission Control Protocol.
TCP/IP = Transmission Control Protocol/Internet Protocol.
TEC = ThermoElectric Cooler (Peltier effect).
Texel = Bilinear TEXtured pixEL (3D video).
TFA = Two Factor Authentication, also 2FA (strong, multi-factor authentication).
TFT = Thin Film Transistor (active matrix display).
TFTP = Trivial File Transfer Protocol.
TGA = TrueVision Graphic file (Targa).
THD = Total Harmonic Distortion.
THX = Tomlinson Holman's eXperiment theater Hi-Fi audio/video standard (LucasFilm Home/Cinema: George Lucas' first film: "THX 1138").
THX EX = Tomlinson Holman's eXperiment EXtended theater Hi-Fi audio/video extended standard (LucasFilm Home/Cinema: George Lucas' first film: "THX 1138").
TIFF = Tagged Image File Format (Aldus).
T&L = Transform & Lighting (3D video).
TLD = Top Level Domain (Internet domain name suffix: .com, .org, .net etc).
TLS = Transport Layer Security (secure Internet protocol).
TMDS = Transition Minimized Differential Signaling DVI + HDMI high speed serial data technology (Silicon Image).
TMM = Terabit Molecular Memory technology (Toshiba DVD).
TNT = TwiN Texel processing engine (NVIDIA RIVA TNT 2D/3D).
TNT2 = TwiN Texel 2 processing engine (NVIDIA RIVA TNT2 2D/3D).
TPU = Texture Processing Unit (3dfx Voodoo family 3D chipsets).
TRIPS = Tera-op Reliable Intelligently adaptive Processing System (IBM CPUs).
TSR = Terminate and Stay Resident program/device/driver.
TTF = True Type Font.
TTL = Time To Live (Internet protocol).
TWI = True Web Integration (Microsoft).

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U

U3D = Universal 3D graphics format technology (3DIF).
UAA = Universal Audio Architecture (Microsoft).
UAE = Unrecoverable Application Error.
UART = Universal Asynchronous Receiver Transmitter.
U-ATA = Ultra Advanced Technology Attachment (EIDE/ATA disk controller/drive).
UCE = Unsolicited Commercial E-mail.
UDDI = Universal Description Discovery and Integration (network protocol).
UDF = Universal Disk Format (Compact Disk).
UDI = Uniform Driver Interface.
UDMA = Ultra Direct Memory Access (EIDE/ATA disk controller/drive).
UDMA/33 = Ultra DMA/Ultra ATA 33.33 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
UDMA/66 = Ultra DMA/Ultra ATA 66.66 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
UDMA/100 = Ultra DMA/Ultra ATA 100 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
UDMA/133 = Ultra DMA/Ultra ATA 133 MB/second tranfer rate (EIDE/ATA hard disk controller/drive technology).
UDO = Ultra Density Optical drive (Plasmon).
UDP = User Datagram Protocol.
UDSL = Universal Digital Subscriber Line modem technology (Texas Instruments).
UDSP = Uniprocessor Digital Signal Processor Drive Electronics based architecture.
UEFI = Unified Extensible Firmware Interface BIOS technology (AMD/AMI/Apple/Dell/HP/IBM/Intel/Lenovo/Microsoft/Phoenix).
UHF = Ultra High Frequency.
UHD = Ultra High Definition, also SHV, also UHDTV, also UHDV (Nippon Hoso Kyokai/Fujitsu) (new digital TV standard: 4320 lines).
UHDTV = Ultra High Definition TeleVision, also SHV, also UHD, also UHDV (Nippon Hoso Kyokai/Fujitsu) (new digital TV standard: 4320 lines).
UHDV = Ultra High Definition Video, also SHV, also UHD, also UHDTV (Nippon Hoso Kyokai/Fujitsu) (new digital TV standard: 4320 lines).
UI = User Interface (2D/3D computer/terminal/device platform interface) (also GUI).
UL 1449 = Underwriter Laboratory tests certification technology for Transient Voltage Surge Suppressors compliance.
Ultra160/m SCSI = Ultra3 SCSI technology (160 MB/s burst transfer rate).
Ultra2b SCSI = Ultra2 SCSI technology (80 MB/s burst transfer rate).
Ultra ATA = Ultra Advanced Technology Attachment (EIDE/ATA disk controller/drive).
Ultra DMA = Ultra Direct Memory Access (EIDE drive controller).
Ultra SCSI = Ultra1 SCSI technology (40 MB/s burst transfer rate).
UMA = Upper Memory Area.
UMB = Upper Memory Block.
UMPC = Ultra Mobile Personal Computer.
UMR = Upper Memory Region.
UNC = Uniform Naming Convention.
UNDI = Universal Network Device Interface API (networking) (Intel PXE).
UNIX = MultiUser Network Operating System.
UPnP = Universal Plug and Play technology.
UPS = Uninterruptible Power Supply.
URI = Uniform Resource Identifier.
URL = Uniform Resource Locator.
URM = Universal Retention Mechanism (Slot 1 CPU).
USB = Universal Serial Bus technology.
USB2 = Universal Serial Bus version 2.0 technology.
USENET = USEr NETwork (newsgroups).
USR = US Robotics.
UTC = Coordinated Universal Time international time standard.
UUE = Uniform Resource Locator UNIX Encoded.
UUENCODE = Unix to Unix Encoding.
UUID = Universally Unique IDentifier 16-byte (128-bit) unique number (software and hardware identification standard) (also GUID + IID).
UVGA = Ultimate Video Graphics Array standard (1024x768 pixels, 768p).
UWB = UltraWideBand technologies (MBOA).
UXGA = Ultra EXtended Graphics Array standard (1600x1200 pixels, 1200p) (also UXVGA).
UXVGA = Ultra EXtended Video Graphics Array standard (1600x1200 pixels, 1200p) (also UXGA).

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V

V.90 = ITU PCM 56 Kbps analog modem transfer technology.
V.92 = ITU PCM 56 Kbps analog modem transfer technology.
VAR = Value Added Reseller.
VAT = Virtual Allocation Table (Compact Disk).
VBE = VESA BIOS Extensions.
VBI = Vertical Blanking Interval.
VCD = Video Compact Disk technology (MPEG-1 encoding).
VCM = Virtual Channel Memory.
VCP = Video Cassette Player.
VCPI = Virtual Control Program Interface.
VCR = Video Cassette Recorder.
VDSL = Variable Digital Subscriber Line modem technology.
VESA = Video Electronics Standards Association.
VFAT = Virtual File Allocation Table (Microsoft Windows).
VFD = Vacuum Fluorescent Display.
VFIR = Very Fast InfraRed protocol (Hewlett Packard).
VfW = Video for Windows.
VGA = Video Graphics Array standard (640x480 pixels, 480p).
VHD = Very High Density printer interface (Centronics).
VHF = Very High Frequency.
VIVO = Video In Video Out.
VIS = Visual Image Size.
VLB = VESA Local Bus (VL bus).
VLM = Very Large Memory addressing (Intel Merced).
VLSI = Very Large Scale Integration.
VMM (1) = Virtual Memory Manager (Microsoft Windows).
VMM (2) = Virtual Machine Monitor.
VoIP = Voice over Internet Protocol.
VP8 = Video codec format used by WebM + HTML5 (On2/Google).
VPN = Virtual Private Network.
VPU = Visual Processing Unit (3Dlabs P10 family 2D/3D video chipsets).
VR (1) = Virtual Reality.
VR (2) = Voltage Regulator (CPU).
VRE = Voltage Regulator Enhanced (MMX/SSE/KNI/3DNow! CPU dual voltage).
VRAM = Video Random Access Memory.
VRM = Voltage Regulator Module (CPU).
VRML = Virtual Reality Modeling (3D) Language.
VSA-100 = Voodoo Scalable Architecture (3dfx Napalm 2D/3D video chipset).
VSM = Virtual Storage Management (Microsoft Windows 32-bit).
VXD = Virtual eXtended (everything) device Driver (Microsoft Windows 95/98/ME).

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W

W3C = World Wide Web Consortium (universal Internet standards).
WAIS = Wide Area Information Server.
WAN = Wide Area Network.
WAR = Wide Aspect Ratio display (16:9 = cinema/TV letterbox format).
WAV = WAVeform audio file format (Microsoft).
WBEM = Web Based Enterprise Management Initiative.
WDF = Windows Driver Foundation 32-bit or 64-bit (Microsoft approved).
WDM = Windows Driver Model 32-bit or 64-bit (Microsoft approved).
WebGL = Web based Graphics Language (Canvas HTML 3D video API).
WebM = Web Multimedia VP8 video and Vorbis audio Matroska container format (On2/Google).
WebP = Web Picture lossy image format (On2/Google).
WEP = Wired Equivalent Privacy (wireless networks).
WFA = Wireless Fidelity (Wi-Fi) Alliance.
WfM = Wired for Management.
WfWG = Microsoft Windows for WorkGroups 3.1x.
WGA = Windows Genuine Advantage [Microsoft mandatory authenticity validation :(].
WHATWG = Web Hypertext Application Technology Working Group (Apple/Mozilla/Opera).
WHQL = Windows Hardware Quality Labs (Microsoft approved).
Wi-Fi = Wireless Fidelity (IEEE 802.11g technology, 54 mbps, 5 GHz, up to 70 m).
WiMAX = Broadband Wireless Access technologies (Intel).
Win16 = Microsoft Windows 16-bit OS API code.
Win2000 = Microsoft Windows 2000 (formerly NT 5.0).
Win2003 = Microsoft Windows 2003.
Win2008 = Microsoft Windows 2008 (code name Longhorn).
Win2K = Microsoft Windows 2000 (formerly NT 5.0).
Win2K3 = Microsoft Windows 2003.
Win2K8 = Microsoft Windows 2008 (code name Longhorn).
Win31 = Microsoft Windows/WfWG 3.1x.
Win32 = Microsoft Windows 32-bit OS API code.
Win32s = Microsoft Windows 32-bit extensions for Windows/WfWG 3.1x 16-bit.
Win3x = Microsoft Windows/WfWG 3.xx.
Win64 = Microsoft Windows 64-bit OS API code.
Win7 = Microsoft Windows 7.
Win95 = Microsoft Windows 95/95a OSR1/95B OSR 2.0/95B OSR 2.1/95C OSR 2.5.
Win98 = Microsoft Windows 98/98 SP1/98 SE(U).
Win9x = Microsoft Windows 95/95a OSR1/95B OSR 2.0/95B OSR 2.1/95C OSR 2.5/98/98 SP1/98 SE(U).
WinFS = Windows Future Storage 32-bit file layer (Windows Vista).
WinFX = Microsoft Windows 32-bit/64-bit OS managed API code (Windows Vista).
WinME = Microsoft Windows ME (Millennium Edition).
WinNT = Microsoft Windows NT 3.xx/4.0 (New Technology).
WinNT3 = Microsoft Windows NT 3.xx (New Technology).
WinNT4 = Microsoft Windows NT 4.0 (New Technology).
WinNTx = Microsoft Windows NT based OSes: NT, 2000, XP, 2003, Vista, 2008 + 7.
WinOSR1 = Microsoft Windows 95a OSR1.
WinOSR2 = Microsoft Windows 95B OSR 2.0/95B OSR 2.1/95C OSR 2.5.
WINS = Windows Internet Name Service protocol (Microsoft).
WinVista = Microsoft Windows Vista.
WinXP = Microsoft Windows XP (eXPerience).
WIPS = Wireless based Intrusion Prevention Systems (wireless security monitoring).
WMF = Microsoft Windows MetaFile.
WMV HD = Microsoft Windows Media Video High Definition.
WOFF = Web Open Font Format W3C standard (Microsoft/Opera/Mozilla).
WORM = Write Once Read Many (CD-R).
WOSA = Windows Open Services Architecture (Microsoft).
WOSSA = Windows Operating Systems and Services Architecture (Microsoft).
WPA (1) = Wireless Protected Access security technology (Wi-Fi Alliance).
WPA (2) = Windows Product Activation [Microsoft mandatory activation :(].
WPE = Windows Protection Error (Microsoft Windows).
WPG = WordPerfect Graphic file.
WQXGA = Wide Quad EXtended Graphics Array standard (2560x1600, 1600p).
WRAM = Windows Random Access Memory.
WS-Discovery = Web Services Discovery network protocol (Intel/Microsoft).
WSXGA = Wide Super Ultra EXtended Graphics Array standard (1440x900 pixels, 900p) (also Wide XGA+).
WSXGA+ = Wide Super EXtended Graphics Array Plus standard (1680x1050 pixels, 1050p) (also Wide XGA+).
WTX = Workstation Advanced Technology EXtended (motherboard form factor).
WUXGA = Wide Ultra EXtended Graphics Array standard (1920x1200 pixels, 1200p) (also WUXVGA).
WUXVGA = Wide Ultra EXtended Video Graphics Array standard (1920x1200 pixels, 1200p) (also WUXGA).
WWIF = World Wide InterFace.
WWW = World Wide Web.
WXGA = Wide EXtended Graphics Array standard (1366x768 pixels, 768p) (also Wide XGA).
WYSIWYG = What You See Is What You Get.

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X

x2 = 3COM/US Robotics 56 kbps analog modem transfer technology.
X3D = EXtensible 3D (W3C).
X86 = Intel X86 CPU (family compatible).
X87 = Intel X87 FPU (family compatible).
XAML = EXtensible Application Markup Language based on XML (Microsoft Windows).
XBL = XML Binding Language (Mozilla/W3C).
XDR-SDRAM = Xtreme Data Rate Synchronous Dynamic Random Access Memory (Rambus).
Xeon = Intel Pentium II/III/IV Xeon CPU (80686).
X-Fi = Xtreme Fidelity audio technology (Creative Labs).
XGA = EXtended Graphics Array standard (1024x768 pixels, 768p) (also XVGA).
XHTML = EXtensible Hypertext Markup Language (W3C).
XHTML 1.1 = EXtensible HyperText Markup Language 1.1 standard (W3C).
XHTML5 = EXtensible HyperText Markup Language 5.0 standard (W3C).
XLL = EXtensible Link Language (W3C).
XML = EXtensible Markup Language (W3C).
XMM = EXtended Memory Manager.
XMPP = Extensible Messaging and Presence Protocol (IETF).
XMS = Microsoft, Intel, Lotus and AST EXtended Memory Specifications.
XPS = XML Paper Specification (Microsoft).
XSL = EXtensible Stylesheet Language (W3C).
XSLT = EXtensible Stylesheet Language Transformations (W3C).
XT = EXtended Technology (motherboard form factor).
XUL = EXtensible User Interface Language based on XML (Mozilla/W3C).
XVGA = EXtended Video Graphics Array standard (1024x768 pixels, 768p) (also XGA).

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Y

Y2K = Year 2000.

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Z

ZAK = Zero Administration Kit for Windows NT workstations.
ZAW = Zero Administration initiative for Windows.
Z-buffer = Third (3rd) dimension/depth/z axis memory (3D video).
ZCLV = Zone Constant Linear Velocity (Compact Disk).
ZFS = Zettabyte File System 128-bit file system technology (Sun).
ZIF = Zero Insertion Force (CPU socket).
ZIP = ZIPped (compressed) file format (PKWare).

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Glossaria, Dictionaria, Encyclopædia, Compendia + Referentia

Wikipedia Reference: Memory Management Terms + System Files @ Wikipedia Wikipedia Resources: Audio/Video/DVD/HD Encoding/Decoding, Transcoding, Converting, Ripping, Muxing/Demuxing Wiktionary Wikisource Webopædia Whatis?com Glossarist Open Directory Computers Glossaries Open Directory Dictionaries Dictionaries Dictionary .NET (free) TechWeb Encyclopædia Microsoft Glossary Microsoft Computer Security + Privacy Glossary Microsoft PC and Server Technologies Glossary + Acronyms Microsoft Global Developer Center Glossary Geek Glossary Tweak3D 3D Video Dictionary SpeedGuide Communications Glossary Matisse Glossary of Internet Terms PC Stats Visual Technology Glossary BABEL Glossary of Computer Abbreviations + Acronyms Jargon File Resources Roxio Storage Glossary Sophos Glossary of Virus Terms Symantec Security Response Glossary Crucial Memory Terms Glossary Free On-Line Dictionary Of Computing (FOLDOC) Tech Dictionary FileInfo Dot What!? Computer Knowledge For You Sharpened Glossary TechTerms Acronyms Online Computer User Dictionary TextFiles Directory Acronym Finder Acronym Search WWW Acronym + Abbreviation Server TUCAA: The Ultimate Computer Acronyms Archive Acronyms + Abbreviations Computer Knowledge: Definitions/Acronyms/Abbreviations Internet FAQ Archives ChannelWeb Encyclopedia Free Online Education Online Education Database Audio + Video Glossary VideoHelp Glossary CDR Info CD-R(W) Glossary Doom9 Ripping Glossary Broadband Glossary Bandipedia STORAGEsearch Glossary + Dictionary File Extensions Information for Windows File Extension Seeker Windows File Information DLL Files DllDump InfDump OcxDump File Extension Source FileFormat Core Rules of Netiquette RFC 1855: Netiquette Guidelines How To Ask Questions The Smart Way How To Report Bugs Effectively

Answers Google Dictionary Dictionary Free Online Dictionary Antonym + Synonym Finder Online Etymology Dictionary Word Wizard OneLook BrainyQuote alphaDictionary HyperDictionary Thesaurus Reference Encyclopædia Online English Encyclopedia UK Merriam-Webster Online Cambridge Dictionaries Online FreeLang Online Dictionaries + Translations AskOxford WordNet WordCentral Kids Dictionary Tutorial Website WordWeb Thesaurus + Dictionary (freeware) WebRef Your Dictionary Language Portal PC Technology Guide RhymeZone EveryPoet NetLingo How Stuff Works Educypedia Technopaedia RefDesk Internet Public Library Open Content Alliance Ibiblio: Public Library and Digital Archive Internet Archive Project Gutenberg Free eBook Library Online Books Directory of FREE Online Books + eBooks Free Online Literature and Study Guides Common Errors in English Online Machine (Raw) Text + HTML Translators Interactive Conversion Calculator All Conversions TextOpus: All Text Tools You'll Ever Need Computing + Networking Protocols Periodic Table of Elements Computer Hardware Terms + Specs On-Line Medical Dictionary Multilingual Glossary of Technical + Popular Medical Terms MedlinePlus Medical Encyclopedia Medical Abbreviations Dictionary of Anthropology Word Unscramble Interactive Mathematics Miscellany and Puzzles Mind and Visual Puzzles IQ Tests, IQ Scores and Human Intelligence International High IQ Society IQ Tests Uncommonly Difficult IQ Tests High Range IQ Tests Hobbes Internet Timeline The History of the Internet in a Nutshell PC Museum TED Skeptic's Dictionary Urban Legends Urban Dictionary

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©1996-2012 MDGx (a.k.a. AXCEL216): Everything here is FREEware. Always ad(vertisment)s, cookies, malware + spyware free. I have created [August 1996], maintain and update these web pages entirely by hand using Programmer's File Editor [replaced Notepad]. I do not promote, speak in the behalf of, advertise or work for any computing, news or internet profit business. All ©copyrights and ®registered ™trademarks retain owners' property.

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