| | WAR | Web ARchive | |
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| | WAS | Web Application Server | |
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| | WAST | West Australian Standard Time | |
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| | WAT | West Africa Time | |
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| | WATS | Wide Area Telephone Service | |
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| | WAV | WAVeform | |
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| | WBEM | Web-Based Enterprise Management | |
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| | WBI | Web Browsing Intelligence | |
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| | WBMP | Wireless BitMaP | |
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| | WBS | Work Breakdown Structure | |
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| | WBTS | Windows-Based Terminal Server | |
| | |
| | WC | World Coordinates | |
| | |
| | WC | Word Count | |
| | |
| | WCCP | Web Cache Communications Protocol | |
| | |
| | WCS | World Coordinate System | |
| | |
| | WCTL | Web Crossing Template Language | |
| | |
| | WD | Western Digital | |
| | |
| | WDJ | Web Developer's Journal | |
| | |
| | WDL | Windows Driver Library | |
| | |
| | WDM | Windows Driver Model | |
| | |
| | WDM | Wavelength-Division Multiplexing | |
| | |
| | WDP | Wireless Datagram Protocol | |
| | |
| | WDRAM | Windows Dynamic Random Access Memory | |
| | |
| | WDU | Windows Desktop Update | |
| | |
| | WE | Write Enable | |
| | |
| | WebNFS | WEB Network File System | |
| | |
| | WECA | Wireless Ethernet Compatible Alliance | |
| | |
| | WEDT | Western Europe Daylight Time | |
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| | WELL | Whole Earth eLectronic Link | |
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| | WEMA | Western Electronics Manufacturers Association | |
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| | WEO | World Economic Outlook | |
| | |
| | WEP | Watchguard Event Processor | |
| | |
| | WEP | Windows Entertainement Pack | |
| | |
| | WEP | Windows Entry Point | |
| | |
| | WEST | Western Europe Standard Time | |
| | |
| | WFC | Windows Foundation Classes | |
| | |
| | WfM | Wired For Management | |
| | |
| | WFP | Windows File Protection | |
| | |
| | WFQ | Weighted Fair Queuing | |
| | |
| | WfW | Windows For Workgroups | |
| | |
| | WG | Working Group | |
| | |
| | WGPO | WorkGroup PostOffice | |
| | |
| | WGS | WorkGroup System | |
| | |
| | WHAM | Waveform Hold And Modify | |
| | |
| | WHC | Workstation Host Connection | |
| | |
| | WHISPER | Whindows Highly Intelligent | |
| | |
| | WHQL | Windows Hardware Quality Labs | |
| | |
| | WIC | Whole Internet Catalogue | |
| | |
| | WIF | Wavelet Image File | |
| | |
| | WIMP | Windows, Icons, Menus and Pointing devices | |
| | |
| | WINA | Wap Interim Naming Authority | |
| | |
| | WINE | Wine Is Not an Emulator | |
| | |
| | WINForum | Wireless Information Networks FORUM | |
| | |
| | WinHEC | WINdows Hardware Engineering Conference | |
| | |
| | WINS | Windows Internet Name Service | |
| | |
| | WINSOCK | WINdows SOCKets | |
| | |
| | Wintel | WINdows/inTEL | |
| | |
| | WIS | Windows Installer Service | |
| | |
| | WISC | Writable Instruction Set Computer | |
| | |
| | WISE | Web-Integrated Software metrics Environment | |
| | |
| | WISE | Wordperfect Information System Environment | |
| | |
| | WIT | Web Interactive Talk | |
| | |
| | WKB | WorKBook | |
| | |
| | WKS | WorKSheet | |
| | |
| | WL | Word Line | |
| | |
| | WLG | dr. Watson LoG | |
| | |
| | WLL | Wireless Local Loop | |
| | |
| | WLM | Work Load Manager | |
| | |
| | WM | Workstation Manager | |
| | |
| | WMA | Windows Media Author | |
| | |
| | WMC | Workflow Management Coalition | |
| | |
| | WME | Windows Media Encoder | |
| | |
| | WMF | Windows Metafile Format | |
| | |
| | WMI | Windows Management Instrumentation | |
| | |
| | WML | Wireless Markup Language | |
| | |
| | WMLS | Wireless Markup Language Script | |
| | |
| | WMRM | Write Many, Read Many | |
| | |
| | WMT | Windows Media Technology | |
| | |
| | WNIC | Wide-area Network Interface Coprocessor | |
| | |
| | WNIM | Wide-area Network Interface Module | |
| | |
| | WOF | Web Objects Framework | |
| | |
| | WOL | Wake On Lan | |
| | |
| | WOM | Write-Only Memory | |
| | |
| | WORM | Write Once Read Many | |
| | |
| | WOS | Workstation Operating System | |
| | |
| | WOSA | Windows Open Systems Architecture | |
| | |
| | WOW | WithOut Worry | |
| | |
| | WOW | Windows on Win32 | |
| | |
| | WP | Word Processor | |
| | |
| | WP | WordPerfect | |
| | |
| | WP | Write Protected | |
| | |
| | WPD | WordPerfect Document | |
| | |
| | WPD | Windows Printer Description | |
| | |
| | WPG | WordPerfect Graphics | |
| | |
| | WPHD | Write-Protect Hard Disk | |
| | |
| | WPM | Words Per Minute | |
| | |
| | WPM | WordPerfect Macro | |
| | |
| | WPOS | WorkPlace Operating System | |
| | |
| | WPS | Windows Printing System | |
| | |
| | WPS | WorkPlace Shell | |
| | |
| | WPVM | Windows Parallel Virtual Machine | |
| | |
| | WPW | WordPerfect for Windows | |
| | |
| | WRAM | Window Random Access Memory | |
| | |
| | WRDS | Wharton Research Data Service | |
| | |
| | WRED | Weighted Random Early Detection | |
| | |
| | WRI | WRIte | |
| | |
| | WRK | Windows Resource Kit | |
| | |
| | WS | WorkSpace | |
| | |
| | WS | WorkStation | |
| | |
| | WS | WordStar | |
| | |
| | WSAPI | Web Site Application Programming Interface | |
| | |
| | WSH | Windows Scripting Host | |
| | |
| | WSP | Wireless Session Protocol | |
| | |
| | WT | Write Through | |
| | |
| | WTA | Wireless Telephony Application | |
| | |
| | WTD | Week To Date | |
| | |
| | WTF | What The F**k | |
| | |
| | WTLS | Wireless Transport Layer Security | |
| | |
| | WTO | World Trade Organization | |
| | |
| | WTP | Wireless Transaction Protocol | |
| | |
| | WTS | Windows Terminal Server | |
| | |
| | WUI | Web User Interface | |
| | |
| | WV | Working Voltage | |
| | |
| | WWIS | World Wide Information System | |
| | |
| | WWW | World Wide Web | |
| | |
| | WYSBYGI | What You See Before You Get It | |
| | |
| | WYSIWYG | What You See Is What You Get | |
| | |
| | X | X windows | |
| | |
| | X2B | heXadecimal To Binary | |
| | |
| | X2C | heXadecimal To Character | |
| | |
| | X2D | heXadecimal To Decimal | |
| | |
| | XA | eXtended Architecture | |
| | |
| | XA | eXtended Attribute | |
| | |
| | XAPIA | X.400 Application Programming Interface Association | |
| | |
| | XBM | X BitMap | |
| | |
| | XCHG | ExCHanGe | |
| | |
| | XCMD | eXternal CoMmanD | |
| | |
| | XDF | Extended Density Format | |
| | |
| | XDM | X Display Manager | |
| | |
| | XDR | eXternal Data Representation | |
| | |
| | XFCN | eXternal FunCtioN | |
| | |
| | XGA | eXtended Graphics Array | |
| | |
| | XHTML | eXtensible HyperText Markup Language | |
| | |
| | XID | eXchange IDentifier | |
| | |
| | XIF | eXternal Interface File | |
| | |
| | XIFF | eXtended Image File Format | |
| | |
| | XIL | X Imaging Library | |
| | |
| | XIOS | eXtended Input/Output System | |
| | |
| | XIP | eXecute-In-Place | |
| | |
| | XL | eXtended Length | |
| | |
| | XLA | eXceL Add-In | |
| | |
| | XLAT | TransLATe | |
| | |
| | XLF | Exceptional Fortran | |
| | |
| | XLK | eXceL Backup | |
| | |
| | XLL | eXtensible Link Language | |
| | |
| | XLM | eXceL Macro | |
| | |
| | XLT | eXceL Template | |
| | |
| | XMA | eXtended Middleware Architecture | |
| | |
| | XMIT | TransMIT | |
| | |
| | XML | eXtensible Markup Language | |
| | |
| | XMM | eXtended Memory Manager | |
| | |
| | XMS | eXtended Memory Specification | |
| | |
| | XNS | Xerox Network Services | |
| | |
| | XOFF | Transmitter OFF | |
| | |
| | XON | Transmitter ON | |
| | |
| | XOR | eXclusive OR | |
| | |
| | XP | eXtreme Performance | |
| | |
| | XP | eXtreme Programming | |
| | |
| | XPG | X/open Portability Guide | |
| | |
| | XPM | X PixMap | |
| | |
| | XPRM | Xerox Print Resources Manager | |
| | |
| | XQL | eXtensible Query Language | |
| | |
| | XR | eXternal Reset | |
| | |
| | XRF | eXtended Recovery Facility | |
| | |
| | XRT | eXtensions for Real-Time | |
| | |
| | XSL | eXtensible Style Language | |
| | |
| | XSMD | eXtended Storage Module Drive | |
| | |
| | XSSI | eXtended Server Side Includes | |
| | |
| | XT | eXtended Technology | |
| | |
| | XTAL | CrysTAL | |
| | |
| | XTCLK | eXternal Transmit CLocK | |
| | |
| | XVGA | eXtended Video Graphics Array | |
| | |
| | XWD | X Window Dump | |
| | |
| | Y2K | Year 2000 | |
| | |
| | YACC | Yet Another Compiler Compiler | |
| | |
| | YAHOO | Yet Another Hierarchically Officious Oracle | |
| | |
| | YAHU | Yet Another Header Utility | |
| | |
| | YAI | Yet Another Isp | |
| | |
| | YAM | Yet Another Modem | |
| | |
| | YAST | Yet Another Setup Tool | |
| | |
| | YATE | Yet Another Terminal Emulator | |
| | |
| | YDT | Yukon Daylight Time | |
| | |
| | YST | Yukon Standard Time | |
| | |
| | YTD | Year To Date | |
| | |
| | Z-CAV | Zoned Constant Angular Velocity | |
| | |
| | ZAC | Zero Administration Client | |
| | |
| | ZAI | Zero Administration Initiative | |
| | |
| | ZAK | Zero Administration Kit | |
| | |
| | ZAW | Zero Administration for Windows | |
| | |
| | ZBR | Zero Bug Release | |
| | |
| | ZBR | Zone-Bit Recording | |
| | |
| | ZCAV | Zone Constant Angular Velocity | |
| | |
| | ZD | Ziff-Davis | |
| | |
| | ZDBOp | Ziff-Davis Benchmark OPeration | |
| | |
| | ZDL | Zero Delay Lockout | |
| | |
| | ZDMI | Ziff-Davis Market Intelligence | |
| | |
| | ZDS | Zenith Data Systems | |
| | |
| | ZDTV | Ziff-Davis TeleVision | |
| | |
| | ZEN | Zero Effort Networking | |
| | |
| | ZIF | Zero Insertion Force | |
| | |
| | ZIP | Zigzag In-line Package | |
| | |
| | ZIP | Zone Improvement Plan | |
| | |
| | ZPV | Zoomed Port Video | |
| | |
| | ZSL | Zero Slot Lan | |
| | |