acronyms.comp revision 1.292
1$NetBSD: acronyms.comp,v 1.292 2019/10/02 11:14:46 sevan Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABI application binary interface 8ABNF augmented backus-naur form 9ABR available bit rate 10ABRT automatic bug reporting tool 11AC alternating current 12ACI adjacent channel interferer 13ACID atomicity, consistency, isolation, durability 14ACK Amsterdam compiler kit 15ACK acknowledgement 16ACL access control list 17ACL active current loop 18ACL asynchronous connection less 19ACP auxiliary control {process,program} 20ACPI advanced configuration and power interface 21ACS access control set 22ACU automatic calling unit 23ADB Apple desktop bus 24ADC analog [to] digital converter 25ADD acronym driven development 26ADDDC adaptive double DRAM device correction 27ADO active data objects 28ADP automatic data processing 29ADPCM adaptive differential pulse code modulation 30ADS alternate data stream 31ADSL asymmetric digital subscriber line 32ADT abstract data type 33AEDC advanced error detection and correction 34AER advanced error reporting 35AES Advanced Encryption Standard 36AFP Apple Filing Protocol 37AFS Andrew File System 38AGC automatic gain control 39AGP accelerated graphics port 40AI analog input 41AI artificial intelligence 42AL access list 43AL active link 44ALE address latch enable 45ALS ambient light sensor 46ALSA advanced Linux sound architecture 47ALU arithmetic and logical unit 48ALUA asymmetric logical unit access 49AM access method 50AM alignment mask 51AM amplitude modulation 52AMD Advanced Micro Devices Inc 53AMDD Agile model-driven development 54AMI alternate mark inversion 55AMP asymmetric multiprocessing 56AMQP advanced message queuing protocol 57AMT active management technology 58AN Arabic number 59ANR application not responding 60ANSI American National Standards Institute 61AO analog output 62AOC add-on card 63AOL Alert-on-LAN 64AOS add or subtract 65AP access point 66AP application processor 67APFS Apple file system 68API application programming interface 69APEI ACPI platform error interface 70APIC advanced programmable interrupt controller 71APIPA automatic private IP addressing 72APM advanced power management 73APM application performance management 74APU accelerated processing unit 75APT advanced persistent threat 76AQM active queue management 77ARAT always running APIC timer 78ARC adaptive replacement cache 79ARC Advanced RISC Computing 80ARC automatic reference counting 81ARM Advanced RISC Machines 82ARP Address Resolution Protocol 83ARPA Advanced Research Projects Agency 84ARQ automatic repeat request 85ARR address range register 86ARU audio response unit 87AS autonomous system 88ASA Adaptive Security Appliance 89ASAN Address Sanitizer 90ASC advanced smart cache 91ASCII American Standard Code for Information Interchange 92ASD agile software development 93ASE advanced software environment 94ASF alert standard format 95ASIC application-specific integrated circuit 96ASK amplitude shift keying 97ASLR address space layout randomization 98ASN autonomous system number 99ASP active server pages 100ASP auxiliary storage pool 101ASPM active state power management 102ASQ automated software quality 103ASR address space register 104ASR Apple software restore 105AST abstract syntax tree 106AST asynchronous system trap 107AT access time 108AT advanced technology 109ATA advanced technology attachment 110ATAPI advanced technology attachment packet interface 111ATC address translation cache 112ATF ARM trusted firmware 113ATF automated testing framework 114ATM asynchronous transfer mode 115ATX advanced technology extended 116AV anti virus 117AVB audio video bridging 118AVL Adelson-Velsky-Landis 119AVX advanced vector extensions 120BA byte align 121BAL basic assembly language 122BAR base address register 123BBS bulletin board system 124BCC blind carbon copy 125BCD binary coded decimal 126BCH boot console handler 127BCR byte count register 128BCS base configuration space 129BD baud 130BDD binary decision diagram 131BDI bit deinterleave 132BDUF big design up front 133BEDO burst extended data output 134BER basic encoding rules 135BER bit error {rate,ratio} 136BERT boot error record table 137BFD bidirectional forwarding detection 138BFD binary {file,format} descriptor 139BFKL big fscking kernel lock 140BFS breadth-first search 141BFT binary file transfer 142BGA ball grid array 143BGP Border Gateway Protocol 144BGPSEC BGP Security 145BIND Berkeley Internet Name Daemon 146BIOS Basic Input/Output System 147BIOS built-in operating system 148BIST built-in self-test 149BIU bus interface unit 150BKDG BIOS and kernel developer's guide 151BLAS basic linear algebra subprograms 152BLC back light control 153BLOB binary large object 154BM bus master 155BMC baseboard management controller 156BMIC bus master interface controller 157BN boundary neutral 158BNF Backus-Naur form 159BO binary output 160BOF beginning of file 161BOM beginning of message 162BOM byte order mark 163BP base pointer 164BP boot processor 165BPB BIOS parameter block 166BPDU bridge protocol data unit 167BPF Berkeley Packet Filter 168BPI bits per inch 169BPM business process modelling 170BPS bits per second 171BPSK binary phase shift keying 172BQS Berkeley quality software 173BRE basic regular expression 174BS backspace 175BS binary sequence 176BSA basic service area 177BSD Berkeley Software Distribution 178BSDP Boot Service Discovery Protocol 179BSF bit scan forward 180BSOD blue screen of death 181BSP binary space partition 182BSP board support package 183BSP bootstrap processor 184BSR bit scan reverse 185BSS basic service set 186BSS block started by symbol 187BSSID basic service set identifier 188BT BitTorrent 189BT Bluetooth 190BT bit test 191BTC bit test [and] complement 192BTM bus transport mechanism 193BTR bit test [and] reset 194BTS bit test [and] set 195BTS bug tracking system 196BW bandwidth 197BWM block-write mode 198BUAG big ugly ASCII graphic 199CA certificate authority 200CACLS change access control lists 201CAD computer-aided design 202CAM computer assisted manufacturing 203CAM conditional access module 204CAM content addressable memory 205CARP Common Address Redundancy Protocol 206CAS column address strobe 207CAS compare and swap 208CAS computer algebra system 209CASE computer aided software engineering 210CAU control access unit 211CAV constant angular velocity 212CBC cipher block chaining 213CBR constant bit rate 214CC carbon copy 215CCD charge coupled device 216CCI co-channel interferer 217CCNUMA cache-coherent non-uniform memory access 218CCTL command completion time limit 219CD cache disable 220CD compact disc 221CDDA compact disc digital audio 222CDL compiler description language 223CDMA code division multiple access 224CDP Cisco Discovery Protocol 225CDRAM cache dynamic random access memory 226CER canonical encoding rules 227CE customer edge 228CF compact flash 229CFB cipher feedback 230CFG context-free grammar 231CFG control-flow graph 232CFI control-flow integrity sanitizer 233CG control gate 234CGA Color Graphics Adapter 235CGI common gateway interface 236CGN Carrier-Grade NAT 237CHAP Challenge-Handshake Authentication Protocol 238CHFS chip file system 239CHS cylinder/head/sector 240CI continuous integration 241CI {common,component} interface 242CIDR Classless Inter-Domain Routing 243CIF common intermediate format 244CIFS Common Internet File System 245CIL common intermediate language 246CIR carrier-to-interference ratio 247CIS contact image sensor 248CISC complex instruction set {computer,computing} 249CJK Chinese, Japanese, [and] Korean 250CLF common log format 251CLI command line interface 252CLI common language infrastructure 253CLR common language runtime 254CLS common language specification 255CLTT closed loop thermal throttling 256CLUT color look-up table 257CLV constant linear velocity 258CM configuration management 259CMA concert multithread architecture 260CMC chassis management controller 261CMC corrected machine check 262CMS {configuration,content,course} management system 263CMI control {management,method} interface 264CMOS complementary metal-oxide-semiconductor 265CMP chip multi-processing 266CMS content management system 267CMYK cyan magenta yellow black 268CN {common,canonical} name 269CNC computer numerical control 270CNR carrier-to-noise ratio 271COA change of authority 272COF current operating frequency 273COFDM coded orthogonal frequency division multiplexing 274COFF common object file format 275COM component object model 276COM computer on module 277COMA cache-only memory architecture 278CORBA common object request broker architecture 279COS class of service 280COW copy-on-write 281CP continuous pilot 282CPB core performance boost 283CPC central processor complex 284CPC cpu performance counters 285CPE common phase error 286CPE common platform enumeration 287CPER common platform error record 288CPG clock pulse generator 289CPI cycles per instruction 290CPL current privilege level 291CPLD complex programmable logic device 292CPP C preprocessor 293CPS characters per second 294CPS continuation-passing style 295CPT command pass through 296CPU central processing unit 297CR carriage return 298CRC cyclic redundancy check 299CRL carrier recovery loop 300CRLF carriage return line feed 301CSU C start up 302CRT cathode ray tube 303CRUD create, read, update, and delete 304CS cable select 305CS chip select 306CS code segment 307CS computer science 308CSDL {common,conceptual} schema definition language 309CSI channel state information 310CSI common system interface 311CSMA carrier sense multiple access 312CSMA/CA carrier sense multiple access with collision avoidance 313CSMA/CD carrier sense multiple access with collision detection 314CSP communicating sequential processes 315CSP content security policy 316CSP constrain satisfaction problems 317CSP cryptographic service provider 318CSR control [and] status registers 319CSRG Computer Systems Research Group 320CSS cascading style sheets 321CST common spanning tree 322CSV comma-separated values 323CTF compact c type format 324CTM close to metal 325CTR counter [mode] 326CTS clear to send 327CTS common type system 328CUA common user access 329CUT coordinated universal time 330CV control voltage 331CVE common vulnerabilities and exposures 332CVS Concurrent Versions System 333DA destination address 334DAA distributed application architecture 335DAAP digital audio access protocol 336DAB digital audio broadcasting 337DAC digital [to] analog converter 338DAC discretionary access control 339DAD duplicate address detection 340DANE DNS-based Authentication of Named Entities 341DAO disk at once 342DAP Directory Access Protocol 343DAT digital audio tape 344DAT dynamic acceleration technology 345DB database 346DBA database administrator 347DBA dynamic bandwidth allocation 348DBB data bus buffer 349DBC design by contract 350DBL dynamic buffer limiting 351DBMS database management system 352DBS database server 353DC direct current 354DCC Direct Client-to-Client 355DCC direct cable connect 356DCD data carrier detect 357DCE data control equipment 358DCE distributed computing environment 359DCIM data center infrastructure management 360DCIM digital camera images 361DCL Digital Command Language 362DCOM distributed component object model 363DCOP Desktop COmmunication Protocol 364DCS data collection systems 365DCT discrete cosine transform 366DCU data cache unit 367DDC display data channel 368DDE dynamic data exchange 369DDI device drivers interface 370DDK device driver kit 371DDL data description language 372DDR double data rate 373DDS direct digital sound 374DDWG Digital Display Working Group 375DE debugging extensions 376DE desktop environment 377DEA data encryption algorithm 378DEC Digital Equipment Corporation 379DEK data encryption key 380DEP data execution prevention 381DER distinguished encoding rules 382DES Data Encryption Standard 383DF don't fragment 384DFA deterministic finite automaton 385DFC data flow control 386DFS depth first search 387DFS distributed file system 388DFSAN Data Flow Sanitizer 389DFT diagnostic function test 390DFT discrete Fourier transform 391DGL data generation language 392DH Diffie-Hellman 393DHCP Dynamic Host Configuration Protocol 394DIA dedicated Internet access 395DIFS distributed inter-frame space 396DIMM dual inline memory module 397DIRT design in real time 398DKI driver/kernel interface 399DL diode logic 400DL discrete logarithm 401DL download 402DLCI data link connection identifier 403DLE data link escape 404DLL dynamic link library 405DLNA digital living network alliance 406DLP discrete logarithm problem 407DMA direct memory access 408DMI desktop management interface 409DMS document management system 410DMT discrete multitone modulation 411DMU data management layer 412DNARD Digital network appliance reference design 413DND drag and drop 414DNLC directory name lookup cache 415DNS Domain Name System 416DNSSEC DNS Security Extensions 417DOE distributed object environment 418DOF data over fibre 419DOM document object model 420DOS denial of service 421DOS disk operating system 422DP DisplayPort 423DPC deferred procedure call 424DPCM differential pulse code modulation 425DPD dead peer detection 426DPI deep packet inspection 427DPI dots per inch 428DPL descriptor privilege level 429DPS Display PostScript 430DPST display power savings technology 431DRAAS disaster recovery as a service 432DRAM dynamic random access memory 433DRBG deterministic random bit generator 434DRI direct rendering infrastructure 435DRM digital rights management 436DRRS display refresh rate switching 437DS debug store 438DS differentiated services 439DSA digital signature algorithm 440DSAP destination service access point 441DSB double-sideband modulation 442DSCP differentiated services code point 443DSDT differentiated system descriptor table 444DSF device special file 445DSL dataset and snapshot layer 446DSL digital subscriber line 447DSL domain specific language 448DSLAM digital subscriber line access multiplexer 449DSN delivery status notification 450DSO dynamic shared object 451DSP digital signal processor 452DSSS direct sequence spread spectrum 453DTB device tree blob 454DTC device tree compiler 455DTD document type definition 456DTE data terminal equipment 457DTE dumb terminal emulator 458DTL diode-transistor logic 459DTLS datagram transport layer security 460DTS device tree source 461DTS digital thermal sensor 462DUT device under test 463DVB digital video broadcasting 464DVCS distributed version control system 465DVD digital versatile disc 466DVFS dynamic voltage and frequency scaling 467DVI device independent 468DVI Digital Visual Interface 469DVR digital video recorder 470E-XER extended XML encoding rules 471EABI embedded-application binary interface 472EAI Email Address Internationalization 473EAI Enterprise Application Integration 474EAP Extensible Authentication Protocol 475EAPOL EAP over Lan 476EAV entity-attribute-value model 477EAV ethernet audio/video bridging 478EBCDIC Extended Binary Coded Decimal Interchange Code 479EBDA Extended BIOS Data Area 480EBNF extended backus-naur form 481EBR extended boot record 482EC elliptic curve 483ECC elliptic curve cryptography 484ECC error correction code 485ECDH elliptic curve Diffie-Hellman 486ECDL elliptic curve discrete logarithm 487ECDLP elliptic curve discrete logarithm problem 488ECDSA elliptic curve digital signature algorithm 489ECL emitter-coupled logic 490ECN explicit congestion notification 491ECP enhanced capability port 492ECS enhanced chip set 493ECS extended configuration space 494EDAC error detection and correction 495EDAT enhanced dynamic acceleration technology 496EdDSA Edwards curve digital signature algorithm 497EDGE explicit data graph execution 498EDID extended display identification data 499EDO extended data out 500EDS electronical data sheet 501EDSAC electronic delay storage automatic calculator 502EDVAC electronic discrete variable automatic computer 503EEE energy efficient ethernet 504EEPROM electrically erasable programmable read only memory 505EFI extensible firmware interface 506EFL emitter follower logic 507EFM eight to fourteen modulation 508EFS extent file system 509EGA Enhanced Graphics Adapter 510EGP exterior gateway protocol 511EH extension header 512EIDE enhanced IDE 513EISA extended industry standard architecture 514EINJ error injection table 515ELF executable and linking format 516ELS entry level system 517EMI electro-magnetic interference 518EMP electro-magnetic pulse 519EMR electro-magnetic radiation 520EMACS Editor MACroS 521ENIAC electronic numerical integrator and computer 522EOF end of file 523EOI end of interrupt 524EOIS end of interactive support 525EOL end of life 526EOL end of line 527EOT end of transmission 528EPIC explicitly parallel instruction computing 529EPP enhanced parallel port 530EPRML extended partial response, maximum likelihood 531EPROM erasable programmable read only memory 532ERC error recovery control 533ERD emergency recovery disk 534ERD entity relationship diagram 535ERE extended regular expression 536ERST error record serialization table 537ESAN Efficiency Sanitizer 538ESB enterprise service bus 539ESDI enhanced small disk interface 540ESDRAM enhanced synchronous dynamic random access memory 541ESI enclosure services interface 542ESS electronic switching system 543ESS extended service set 544ESSID extended service set identifier 545EST enhanced speedstep 546ETL extract, transform, load 547EU execution unit 548EULA end user license agreement 549FAT file allocation table 550FBRAM frame buffer random access memory 551FCIF full common intermediate format 552FCL fiber channel loop 553FCS frame check sequence 554FDC floppy disk controller 555FDD floppy disk drive 556FDDI fiber distributed data interface 557FDE full disk encryption 558FDT flattened device tree 559FEA finite element analysis 560FEC forward error correction 561FET field-effect transistor 562FF finite field 563FF form feed 564FFDH finite-field Diffie-Hellman 565FFH functional fixed hardware 566FFI foreign function interface 567FFM focus follows mouse 568FFS Fast File System 569FFS find first set 570FFT fast Fourier transform 571FG floating gate 572FHSS frequency hop spread spectrum 573FID frequency identifier 574FIFO first in, first out 575FILO first in, last out 576FIPS Federal Information Processing Standards 577FIR fast infrared 578FLOPS floating [point] operations per second 579FLOSS free/libre/open source software 580FM frequency modulation 581FMR false match rate 582FOSS free/open source software 583FPGA field programmable gate array 584FPM fast page mode 585FPR floating point register 586FPU floating point unit 587FQDN fully qualified domain name 588FRR false rejection rate 589FRU field replaceable unit 590FS file system 591FSB front side bus 592FSCK file system check 593FSF Free Software Foundation 594FSK frequency shift keying 595FSM finite-state machine 596FTA fault tree analysis 597FTL flash translation layer 598FTP File Transfer Protocol 599FTPS File Transfer Protocol Secure 600FUS fast user switching 601FWH firmware hub 602FWS folding white space 603GAL generic array logic 604GARP generic attribute registration protocol 605GAS generic address structure 606GC garbage collector 607GCM Galois counter mode 608GCR group-coded recording 609GDI Graphics Device Interface 610GDT global descriptor table 611GECOS general comprehensive operating supervisor 612GEM graphics environment manager 613GEM graphics execution manager 614GENA general event notification architecture 615GHC Glasgow Haskell compiler 616GHES generic hardware error source 617GIC generic interrupt controller 618GID group identifier 619GIF graphics interchange format 620GMCH graphics and memory controller hub 621GNU GNU's Not Unix 622GOP graphics output protocol 623GOT global offset table 624GPE general purpose event 625GPF general protection fault 626GPG GNU Privacy Guard 627GPL [GNU] General Public License 628GPR general purpose register 629GPS generalized processor sharing 630GPT GUID partition table 631GPU graphics processing unit 632GR golden ratio 633GRE generic routing encapsulation 634GSI global system interrupt 635GUI graphical user interface 636GUID globally unique identifier 637GVFS git virtual file system 638HA high availability 639HAL hardware abstraction layer 640HAT hashed array tree 641HATEOAS hypermedia as the engine of application state 642HBA host bus adapter 643HCF halt and catch fire 644HCI host controller interface 645HCI human-computer interaction 646HCL hardware compatibility list 647HDCP High-bandwidth Digital Content Protection 648HDD hard disk drive 649HDL hardware description language 650HDMI High-Definition Multimedia Interface 651HDTV high-definition television 652HECI host embedded controller interface 653HEST hardware error source table 654HEVC high efficiency video coding 655HF high frequency 656HFM highest frequency mode 657HFS hierarchical file system 658HID human interface device 659HKP HTTP Keyserver Protocol 660HLL high-level language 661HMA high memory area 662HMI human-machine interface 663HOOD hierarchical object oriented design 664HP Hewlett-Packard 665HPC high performance computing 666HPET high precision event timer 667HSM hardware security module 668HSM hierarchical storage management 669HT hyper-threading 670HTC hardware thermal control 671HTCC high temperature co-fired ceramic 672HTML HyperText Markup Language 673HTT hyper-threading technology 674HTTP Hypertext Transfer Protocol 675HTTPS Hypertext Transfer Protocol Secure 676HVM hardware virtual machine 677HVDS High-Voltage Differential Signaling 678HWASAN Hardware-assisted Address Sanitizer 679HZ Hertz 680I2O intelligent input/output 681IA information assurance 682IAAS infrastructure as a service 683IANA Internet Assigned Numbers Authority 684IBC iterated block cipher 685IBM International Business Machines 686IBPI international blinking pattern interpretation 687IBS instruction based sampling 688IBSS independent basic service set 689IC integrated circuit 690ICA independent computer architecture 691ICACLS integrity control access control lists 692ICB Internet Citizen's Band 693ICE in-circuit emulator 694ICE internal compiler error 695ICH I/O controller hub 696ICMP Internet Control Message Protocol 697ICT information and communications technology 698ICW initialization command word 699IDA Intel dynamic acceleration 700IDCMP Intuition direct communication message port 701IDCT inverse discrete cosine transform 702IDE integrated development environment 703IDE integrated drive electronics 704IDPS intrusion detection [and] prevention system 705IDRP inter-domain routing protocol 706IDS intrusion detection system 707IDT interrupt descriptor table 708IE Internet Explorer 709IEC International Electrotechnical Commission 710IEEE Institute of Electrical and Electronics Engineers 711IESG Internet Engineering Steering Group 712IETF Internet Engineering Task Force 713IF intermediate frequency 714IFCM isochronous flow control mode 715IFF Interchange File Format 716IFS internal field separator 717IGD Internet gateway device 718IGMP Internet Group Management Protocol 719IGP interior gateway protocol 720IHV independent hardware vendor 721IKE Internet key exchange 722ILM internal loopback mode 723ILOM integrated lights-out management 724ILP instruction level parallelism 725IM instant messaging 726IMAP Internet Message Access Protocol 727IMC integrated memory controller 728IMCR interrupt mode configuration register 729IMR interrupt mask register 730IMS information management system 731IMSI international mobile subscriber identity 732INCITS InterNational Committee for Information Technology Standards 733INODE index node 734IO input/output 735IOCTL input/output control 736IOM input/output managers 737IOMMU input/output memory management unit 738IOT Internet of Things 739IP Internet Protocol 740IP intellectual property 741IPC instructions per cycle 742IPC interprocess communication 743IPCF interprocess communication facility 744IPE integrated programming environment 745IPI intelligent peripheral interface 746IPI interprocessor interrupt 747IPL Initial Program Load 748IPL Interrupt Priority Level 749IPMB Intelligent Platform Management Bus 750IPMI Intelligent Platform Management Interface 751IPNG Internet Protocol, Next Generation 752IPS in-plane switching 753IPS intrusion prevention system 754IPSEC Internet Protocol Security 755IRC Internet Relay Chat 756IRDA infrared data association 757IRDP ICMP Router Discovery Protocol 758IRQ interrupt request 759IRQL interrupt request level 760IRR interrupt request register 761IRTF Internet Research Task Force 762IS information system 763ISA industry standard architecture 764ISA instruction set architecture 765ISE instant secure erase 766ISDN integrated services digital network 767ISI inter-symbol interference 768ISL initial system load 769ISM industrial, scientific, [and] medical 770ISN initial serial number 771ISO International Standards Organization 772ISOC Internet Society 773ISP Internet service provider 774ISR in-service register 775ISR interrupt service routine 776IST internal spanning tree 777IST interrupt stack table 778ISV independent software vendor 779IT information technology 780ITB Intel Turbo Boost 781ITIL information technology infrastructure library 782ITP in-target probe 783ITSM IT service management 784IV initialization vector 785IVT interrupt vector table 786JBOD just a bunch of disks 787JCL Job Control Language 788JFET junction [gate] field-effect transistor 789JIT just in time 790JPEG Joint Photographic Experts Group 791JRE Java Runtime Environment 792JSON JavaScript Object Notation 793JTAG joint test action group 794KASLR kernel address space layout randomization 795KB keyboard 796KB kilobyte 797KBD keyboard 798KBD kilobaud 799KCS keyboard controller style 800KLOC thousand lines of code 801KMS kernel-mode setting 802KPI kernel programming interface 803KVA kernel virtual address 804KVM kernel virtual machine 805KVM kernel virtual memory 806KVM keyboard, video, [and] mouse 807L2CAP link layer control and adaptation protocol 808LAMP Linux Apache MySQL {Perl,PHP,Python} 809LAN local area network 810LAPIC local advanced programmable interrupt controller 811LAR load access rights 812LBA logical block addressing 813LBNF labeled backus-naur form 814LBS location-based service 815LCD liquid crystal display 816LCP link control protocol 817LDA local delivery agent 818LDAP Lightweight Directory Access Protocol 819LDR light-dependent resistor 820LDT local descriptor table 821LE logical extent 822LED light emitting diode 823LELL low energy link layer 824LER label edge router 825LF line feed 826LF low frequency 827LFM lowest frequency mode 828LFN long file names 829LFO low-frequency oscillation 830LFS log-structured file system 831LFU least frequently used 832LHP loop heat pipe 833LIF logical interchange format 834LIFO last in, first out 835LILO LInux LOader 836LILO last in, last out 837LINT local interrupt 838LIR local Internet registry 839LISP LISt Processor 840LISP Locator/ID Separation Protocol 841LKM {Linux,loadable} kernel module 842LKML Linux kernel mailing list 843LL load linked 844LL/SC load linked/store conditional 845LLC logical link control 846LLD low-level design 847LLDD low-level design document 848LLDP link layer discovery protocol 849LLF low level format 850LLMNR link-local multicast name resolution 851LLVM Low Level Virtual Machine 852LM long mode 853LMCE local machine check exception 854LMI local management interface 855LMM link management mode 856LMP link management protocol 857LNO loop nest optimization 858LOC lines of code 859LOM lights-out management 860LPE Linux performance events 861LPC low pin count 862LPS local positioning system 863LRC longitudinal redundancy check 864LRM left-to-right mark 865LRO left-to-right override 866LRU least recently used 867LS link state 868LSAN Leak Sanitizer 869LSB Linux standards base 870LSB least significant {bit,byte} 871LSI large scale integration 872LSL load segment limit 873LSM log structured merge 874LSN Large Scale NAT 875LSN log sequence number 876LSR label switch router 877LTCC low temperature co-fired ceramic 878LTO linear tape-open 879LTO link time optimization 880LTR left to right 881LTR load task register 882LTR letter(-sized paper) 883LTS long term support 884LUA Lua Uppercase Accident 885LUN logical unit number 886LV logical volume 887LVM logical volume management 888LVT local vector table 889LVDS Low-Voltage Differential Signaling 890LWP light-weight process 891LZSS Lempel Ziv Storer Szymanski 892LZW Lempel Ziv Welch 893MAB MAC authentication bypass 894MAC mandatory access control 895MAC {media,medium} access control 896MAC message authentication {check,code} 897MADT multiple APIC descriptor table 898MAMR microwave-assisted magnetic recording 899MB megabyte 900MBA multi-boot agent 901MBR master boot record 902MBS megabits per second 903MC memory controller 904MCA machine check architecture 905MCA MicroChannel architecture 906MCC multiversion concurrency control 907MCE machine check exception 908MCGA Multi-Color Graphics Array 909MCH memory controller hub 910MCLAG multi-chassis link aggregation 911MCM multi-chip module 912MCQ memory controlled queue 913MD machine-dependent 914MD-SAL model-driven service abstraction layer 915MDA mail delivery agent 916MDA Monochrome Display Adapter 917MDC Management Data Clock 918MDI Medium Dependent Interface 919MDI-X Medium Dependent Interface Crossover 920MDIO Management Data Input/Output 921MDMX MIPS Digital Media eXtension 922MDRAM multibank dynamic random access memory 923MESI modified, exclusive, shared, invalid 924MFC merge from current 925MFC Microsoft Foundation Classes 926MFM modified frequency modulation 927MFU most frequently used 928MGCP media gateway control protocol 929MHU message handling unit 930MI machine-independent 931MI machine interface 932MIB management information base 933MIC message integrity {check,code} 934MID mobile Internet device 935MIDI musical instrument digital interface 936MIF management information format 937MII media independent interface 938MIM man in the middle 939MIMD multiple instruction, multiple data 940MIME Multipurpose Internet Mail Extensions 941MIMO multiple input multiple output 942MIPS million instructions per second 943MIPS Microprocessor without Interlocked Pipeline Stages 944MISD multiple instruction, single data 945MIT Massachusetts Institute of Technology 946MITM man in the middle 947ML machine language 948ML machine learning 949ML mailing list 950ML markup language 951ML maximum likelihood 952MLC multi-level cell 953MLD multicast listener discovery 954MLHP micro loop heat pipe 955MMF multi-mode fiber 956MMIC monolithic microwave integrated circuit 957MMIO memory mapped input/output 958MMORPG massive multiplayer online role playing game 959MMRP multiple MAC registration protocol 960MMU memory management unit 961MMX matrix math extension 962MMX multimedia extension 963MMX multiple math extension 964MO magneto-optical 965MOESI modified, owned, exclusive, shared, invalid 966MOF maximum operating frequency 967MOSFET metal-oxide-semiconductor field-effect transistor 968MOSI modified, owned, shared, invalid 969MP multi-platform 970MP multiplayer 971MP {multiprocessing,multiprocessor} 972MPEG moving picture experts group 973MPI message passing interface 974MPLS Multiprotocol Label Switching 975MPP massively parallel processor 976MPS memory pool system 977MPS multiprocessor specification 978MQTT Message Queuing Telemetry Transport 979MR modem ready 980MRO method resolution order 981MRP multiple registration protocol 982MRU most recently used 983MS Microsoft 984MSAN Memory Sanitizer 985MSB most significant {bit,byte} 986MSC message sequence chart 987MSE mean square error 988MSF minutes seconds frames 989MSI message signaled interrupt 990MSI modified, shared, invalid 991MSR {machine state,model-specific} register 992MSS maximum segment size 993MSTP Multiple Spanning Tree Protocol 994MT machine translation 995MTA mail transfer agent 996MTBF mean time between failures 997MTP media transfer protocol 998MTRR memory type range register 999MTTF mean time to failure 1000MTU maximum transmission unit 1001MUA mail user agent 1002MUD multi-user domain 1003MVCC multiversion concurrency control 1004MVR multicast VLAN registration 1005MVRP multiple VLAN registration protocol 1006MWE module width encoding 1007MX mail exchange 1008NACK negative acknowledgement 1009NAK negative acknowledgement 1010NAN not a number 1011NAPT Network Address Port Translation 1012NAS network attached storage 1013NAT network address translation 1014NAV network allocation vector 1015NC numerical control 1016NC-SI network controller sideband interface 1017NCO numerically-controlled oscillator 1018NCP Network Control Protocol 1019NCSI network connectivity status indicator 1020NCQ native command queuing 1021ND neighbor discovery 1022NDFA nondeterministic finite automaton 1023NDIS network driver interface specification 1024NE numeric error 1025NEWS Network extensible Window System 1026NFA nondeterministic finite automaton 1027NFC near-field communication 1028NFCI no functional change intended 1029NFS network file system 1030NFV network function virtualization 1031NIA next instruction address 1032NIC network information center 1033NIC network interface card 1034NIDS network intrusion detection system 1035NIP network interface protocol 1036NIPS network intrusion prevention system 1037NIS network information service 1038NIST National Institute of Standards and Technology 1039NLS native language support 1040NMI non-maskable interrupt 1041NNTP Network News Transfer Protocol 1042NOC network operations center 1043NOP no operation 1044NOS network operating system 1045NP nondeterministic polynomial time 1046NRND not recommended for new designs 1047NRZ non-return to zero 1048NSA nation-state adversary 1049NSA no such agency 1050NSA National Security Agency 1051NTM non-deterministic Turing machine 1052NTP Network Time Protocol 1053NUMA non-uniform memory access 1054NURBS non-uniform rational basis spline 1055NVMM NetBSD Virtual Machine Monitor 1056NVMM non-volatile main memory 1057NVRAM non-volatile random access memory 1058NW not write-through 1059NX no execute 1060OAEP optimal asymmetric encryption padding 1061OAM operations, administration, and {management,maintenance} 1062OBO off by one 1063OBOE off by one error 1064OCL object constraint language 1065OCR optical character recognition 1066ODE offline device environment 1067ODI open data-link interface 1068ODM object data manager 1069ODCM on-demand clock modulation 1070ODT on-die termination 1071OEM original equipment manufacturer 1072OFB output feedback 1073OFDM orthogonal frequency division multiplexing 1074OFET organic field-effect transistor 1075OLAP online analytical processing 1076OLE object linking and embedding 1077OLTP online transaction processing 1078ONFI open nand flash interface 1079OO OpenOffice 1080OO object oriented 1081OOB out of band 1082OOE out of order execution 1083OOM out of memory 1084OOO OpenOffice.org 1085OOP object oriented programming 1086OOPS object oriented programming systems 1087OOSE object oriented software engineering 1088OPM operations per minute 1089OPS operations per second 1090OQL Object Query Language 1091ORB object request broker 1092ORM object-relational mapping 1093OS operating system 1094OSD open source definition 1095OSF open software foundation 1096OSI Open Source Initiative 1097OSI open systems interconnection 1098OSPF open shortest path first 1099OSPM OS power management 1100OSS open sound system 1101OSS open source software 1102OSVW operating system visible workarounds 1103OTP one time password 1104OTP open telecom platform 1105OU organizational unit 1106OUI organizationally unique identifier 1107OWL Web Ontology Language 1108P2P PCI to PCI 1109P2P peer to peer 1110PA phase accumulator 1111PA physical address 1112PAAS platform as a service 1113PAC phase-amplitude converter 1114PAE physical address extension 1115PAGP port aggregation protocol 1116PAL phase alternating line 1117PAL programmable array logic 1118PAM pluggable authentication modules 1119PAM pulse amplitude modulation 1120PAP password authentication protocol 1121PAT page attribute table 1122PAT port address translation 1123PATA parallel ATA 1124PAX portable archive exchange 1125PBE pending break encoding 1126PBE programming by example 1127PC personal computer 1128PC program counter 1129PCB printed circuit board 1130PCB process control block 1131PCB Protocol Control Block 1132PCC Portable C Compiler 1133PCD page-level cache disable 1134PCE path computation element 1135PCE performance-monitor counter enable 1136PCEP Path Computation Element Protocol 1137PCH platform controller hub 1138PCI peripheral component interconnect 1139PCM phase change memory 1140PCM pulse code modulation 1141PCMCIA Personal Computer Memory Card International Association 1142PCP Port Control Protocol 1143PD public domain 1144PDA personal digital assistant 1145PDA pushdown automaton 1146PDAG propositional directed acyclic graph 1147PDB power distribution board 1148PDF portable document format 1149PDM pulse-duration modulation 1150PDN pull-down network 1151PDP page {descriptor,directory} page 1152PDS product data sheet 1153PDU protocol data unit 1154PE protection enable 1155PE provider edge 1156PEAP Protected EAP 1157PECI platform environment control interface 1158PEP protocol extension protocol 1159PER packed encoding rules 1160PFS perfect forward secrecy 1161PGAS partitioned global address space 1162PGE page global enable 1163PGP Pretty Good Privacy 1164PHB PCI host bridge 1165PHP PHP: Hypertext Preprocessor 1166PIC performance instrumentation counters 1167PIC position independent code 1168PIC programmable interrupt controller 1169PICNIC problem in chair, not in computer 1170PID process id 1171PIE position independent executable 1172PIL Priority Interrupt Level 1173PIM personal information manager 1174PIM platform-independent model 1175PIO programmed input/output 1176PIPT physically indexed, physically tagged 1177PIQ prefetch input queue 1178PIT programmable interrupt timer 1179PIV personal identity verification 1180PIX Private Internet eXchange 1181PKCS public-key cryptography standards 1182PKI public key infrastructure 1183PLC programmable logic controller 1184PLD programmable logic device 1185PLL phase locked loop 1186PLRU pseudo LRU 1187PLTM package level thermal management 1188PM power management 1189PM {phase,pulse} modulation 1190PMC performance monitoring counters 1191PME power management event 1192PMEG page map entry group 1193PMI performance monitoring infrastructure 1194PMI platform management interrupt 1195PMIC power management integrated circut 1196PMIO port-mapped input/output 1197PMT photo-multiplier tube 1198PMU performance monitoring units 1199PMU power management unit 1200PNG portable network graphics 1201PNP plug and play 1202POE power over ethernet 1203POF probability of failure 1204POP Post Office Protocol 1205POP power on password 1206POR plan of record 1207POSIX Portable Operating System Interface [for Unix] 1208POST power on self test 1209POTS plain old telephone system 1210POWER Performance Optimization With Enhanced RISC 1211POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1212PP pair programming 1213PPB PCI [to] PCI bridge 1214PPC PowerPC 1215PPC Power Performance Computing 1216PPI pixels per inch 1217PPM pages per minute 1218PPP Point-to-Point Protocol 1219PPPOA Point-to-Point Protocol over ATM 1220PPPOE Point-to-Point Protocol over Ethernet 1221PPR processor programming reference 1222PPT powerpoint 1223PPT punched paper tape 1224PPU physics processing unit 1225PRAM Parameter RAM 1226PRBS pseudorandom bit sequence 1227PRG pseudorandom generator 1228PRF pseudorandom function [family] 1229PRML partial response, maximum likelihood 1230PRN pseudorandom {noise,number} 1231PRNG pseudorandom number generator 1232PROM programmable read only memory 1233PRP pseudorandom permutation 1234PRU Programmable Realtime Unit 1235PS PostScript 1236PSD power spectral density 1237PSE page size extensions 1238PSK phase shift keying 1239PSK pre-shared key 1240PSTN public switched telephone network 1241PSW program status word 1242PTE page table entry 1243PTLA pseudo top level aggregator 1244PTP page table page 1245PTV perceived target value 1246PU processing unit 1247PUC personal unblocking code 1248PUN physical unit number 1249PV physical volume 1250PVC permanent virtual circuit 1251PVG physical volume group 1252PVI protected-mode virtual interrupt 1253PVRST Per-VLAN rapid spanning tree 1254PVST Per-VLAN Spanning Tree 1255PWM pulse width modulation 1256PXE preboot execution environment 1257QA quality assurance 1258QAM quadrature amplitude modulation 1259QAM quality assurance management 1260QBE query by example 1261QC quality control 1262QDI quasi delay insensitive 1263QCIF quarter common intermediate format 1264QOS quality of service 1265QVL qualified vendor list 1266R/O read only 1267R/W read/write 1268RA receiver address 1269RA remote assistance 1270RA resource affinity 1271RA router advertisement 1272RAD rapid application development 1273RADIUS remote authentication dial-in user service 1274RAID redundant array of {independent,inexpensive} disks 1275RAM random access memory 1276RAS reliability, availability and serviceability 1277RAS remote access service 1278RAS restartable atomic sequence 1279RAS row address strobe 1280RBF radial basis function 1281RBNF routing backus-naur form 1282RBT red-black tree 1283RC release candidate 1284RC remote control 1285RC run commands 1286RCS Revision Control System 1287RCS revision control system 1288RCU read, copy, update 1289RDB Rigid Disk Block 1290RDBMS relational database management system 1291RDF Resource Description Framework 1292RDM relational data model 1293RDMA remote direct memory access 1294RDP remote desktop protocol 1295RDRAM Rambus DRAM 1296RE regular expression 1297REPL read, evaluate, print, loop 1298REST representational state transfer 1299RF radio frequency 1300RFB remote frame buffer 1301RFI radio frequency interference 1302RFO request for ownership 1303RFU reserved for future use 1304RGB red green blue 1305RGBA red green blue alpha 1306RGMII reduced gigabit media independent interface 1307RH read hit 1308RHEL Red Hat Enterprise Linux 1309RHL Red Hat Linux 1310RIB routing information base 1311RIFF Resource Interchange File Format 1312RIP Raster Image Processor 1313RIP Routing Information Protocol 1314RIR regional Internet registry 1315RISC reduced instruction set {computer,computing} 1316RKM ROM Kernel Manual 1317RLE run length encoding 1318RLL run length limited 1319RLO right-to-left override 1320RM read miss 1321RMCP Remote Management Control Protocol 1322RMI remote method invocation 1323RMO Relaxed Memory Ordering 1324RMPM rapid memory power management 1325RMS root mean square 1326RMW read, modify, write 1327RNG random number generator 1328ROM read only memory 1329RPC remote procedure call 1330RPKI resource PKI 1331RPL requested privilege level 1332RPM revolutions per minute 1333RPN reverse Polish notation 1334RPVST Rapid Per-VLAN Spanning Tree 1335RR random replacement 1336RR round robin 1337RS relay station 1338RSA Rivest, Shamir, [and] Adleman 1339RSIP Realm Specific IP 1340RSN Robust Secure Network 1341RSS really simple syndication 1342RSS residual sum of squares 1343RSTP Rapid Spanning Tree Protocol 1344RT real time 1345RTC real time clock 1346RTC real time computing 1347RTF rich text format 1348RTL register transfer language 1349RTL resistor-transistor logic 1350RTL right to left 1351RTOS real time operating system 1352RTS request to send 1353RTT round trip time 1354RUP rational unified process 1355RW Rabin-Williams 1356RWM read-write memory 1357RX {receive,receiver} 1358S/PDIF Sony/Philips Digital Interface Format 1359SA security advisory 1360SA security association 1361SA source address 1362SA structured analysis 1363SAAS software as a service 1364SABRE Semi-automated business research environment 1365SACD super audio compact disc 1366SAD security association database 1367SAF-TE SCSI accessed fault-tolerant enclosure 1368SAGE Semi-automated ground environment 1369SAL {service,system} abstraction layer 1370SAM serial access memory 1371SAM sum addressed memory 1372SAML security assertion markup language 1373SAN storage area network 1374SAP service access point 1375SAPIC streamlined advanced programmable interrupt controller 1376SASD structured analysis, structured design 1377SASI Shugart Associates System Interface 1378SASL simple authentication [and] security layer 1379SATA serial advanced technology attachment 1380SAX simple API for XML 1381SB sound blaster 1382SBSA server base system architecture 1383SBU standard build unit 1384SC store conditional 1385SCA source code analyzer 1386SCADA supervisory control and data acquisition 1387SCC single chip cloud 1388SCC source code control 1389SCCP skinny call control protocol 1390SCCS Source Code Control System 1391SCI scalable coherent interface 1392SCI system control interrupt 1393SCM software configuration management 1394SCM source code management 1395SCM storage-class memory 1396SCO synchronous connection orientated 1397SCP secure copy 1398SCP system control processor 1399SCPI system control and power interface 1400SCSI Small Computer System Interface 1401SCTP Stream Control Transmission Protocol 1402SDDC software defined data center 1403SDEI software delegated exception interface 1404SDI symbol deinterleave 1405SDK software development kit 1406SDL Simple Declarative Language 1407SDL Simple Direct-media Layer 1408SDLC {software,system,systems} development life cycle 1409SDN software defined networking 1410SDP Session Description Protocol 1411SDR software defined radio 1412SDRAM synchronous dynamic random access memory 1413SDS software defined storage 1414SDT syntax-directed translation 1415SEA synchronous external abort 1416SEGV segmentation violation 1417SED self-encrypting drive 1418SED stream editor 1419SEMB serial ATA enclosure management bridge 1420SEO search engine optimization 1421SES SCSI enclosure services 1422SFC sequential function chart 1423SFI simple firmware interface 1424SFI software fault isolation 1425SFTP SSH File Transfer Protocol 1426SFTP Serial File Transfer Protocol 1427SFTP Simple File Transfer Protocol 1428SGI Silicon Graphics, Inc 1429SGI software generated interrupt 1430SGMII serial gigabit media independent interface 1431SGPIO serial general purpose input/output 1432SGRAM synchronous graphics random access memory 1433SHA secure hash algorithm 1434SICP structure and interpretation of computer programs 1435SIDH supersingular isogeny Diffie-Hellman 1436SIEM security information and event management 1437SIF source input format 1438SIFS short inter-frame space 1439SIM subscriber identity module 1440SIMD single instruction, multiple data 1441SIMM single inline memory module 1442SIP Session Initiation Protocol 1443SIR signal-to-interference ratio 1444SIR slow infrared 1445SISD single instruction, single data 1446SLAAC stateless address auto-configuration 1447SLC single-level cell 1448SLDRAM synchronous-link dynamic random access memory 1449SLED single large expensive disk 1450SLI scalable link interface 1451SLI scan-line interleave 1452SLIC system license internal code 1453SLOC source lines of code 1454SLRU segmented LRU 1455SMA smart memory access 1456SMAF system management action field 1457SMAP Simple Mail Access Protocol 1458SMAP supervisor mode access prevention 1459SMART self-monitoring analysis and reporting technology 1460SMB Server Message Block 1461SMB system management bus 1462SMBIOS System Management BIOS 1463SMC system management controller 1464SMD storage module device 1465SMEP supervisor mode execution protection 1466SMF single mode fiber 1467SMI structure of management information 1468SMI system management interrupt 1469SMM system management mode 1470SMP serial management protocol 1471SMP symmetric multiprocessing 1472SMT simultaneous multithreading 1473SMTP Simple Mail Transfer Protocol 1474SMU system management unit 1475SNA systems network architecture 1476SNAP Sub-Network Access Protocol 1477SNIA Storage Networking Industry Association 1478SNMP Simple Network Management Protocol 1479SNR signal-to-noise ratio 1480SOA service oriented architecture 1481SOAP Simple Object Access Protocol 1482SOC system on chip 1483SOF start of frame 1484SOH start of header 1485SOHO small office/home office 1486SOL serial over LAN 1487SOM system on module 1488SP service pack 1489SP stack pointer 1490SPA storage pool allocator 1491SPAN switched port analyzer 1492SPARC scalable processor architecture 1493SPARQL SPARQL Protocol and RDF Query Language 1494SPD security policy database 1495SPD serial presence detect 1496SPDIF Sony/Philips digital interface format 1497SPI serial peripheral interface 1498SPI stateful packet inspection 1499SPL system interrupt priority level 1500SPL spinlock 1501SPMD single process, multiple data 1502SPR special purpose register 1503SPT sectors per track 1504SQA software quality assurance 1505SQCIF sub quarter common intermediate format 1506SQL Structured Query Language 1507SRAM static random access memory 1508SRC sample rate conversion 1509SRP SCSI RDMA protocol 1510SRR shaped round robin 1511SS self-snoop 1512SS stack segment 1513SSA static single assignment 1514SSAP source service access point 1515SSB single-sideband modulation 1516SSC spread spectrum clock 1517SSD solid state drive 1518SSE streaming SIMD extensions 1519SSFDC solid state floppy disc card 1520SSH secure shell 1521SSI server side includes 1522SSID service set identifier 1523SSL secure sockets layer 1524SSP stack smashing protection 1525STC software thermal control 1526STD state transition diagram 1527STM software transactional memory 1528STOMP Streaming Text Oriented Messaging Protocol 1529STP Spanning Tree Protocol 1530STP shielded twisted pair 1531STRG spanning tree root guard 1532SUN Stanford University Network 1533SUS Single Unix Specification 1534SUT system under test 1535SVC switched virtual circuit 1536SVG scalable vector graphics 1537SVGA Super Video Graphics Array 1538SVI {switch,switched} virtual interface 1539SVM secure virtual machine 1540SVM support vector machine 1541SVR System V Release 1542SVS Separate Virtual Space 1543SWF Shockwave Flash 1544SWIG simplified wrapper [and] interface generator 1545SYR symbol timing recovery 1546TA test assertion 1547TA transmitter address 1548TACACS terminal access controller access-control system 1549TAI international atomic time 1550TAO track at once 1551TAOCP The Art of Computer Programming 1552TAP Test Anything Protocol 1553TAS test and set 1554TB terabyte 1555TBNF transitional backus-naur form 1556TCB trace capture buffer 1557TCB trusted computing base 1558TCC thermal control circuit 1559TCL tool command language 1560TCP Transmission Control Protocol 1561TCQ tagged command queueing 1562TDC time [to] digital converter 1563TDD test-driven development 1564TDD time division duplex 1565TDM time division multiplexing 1566TDMA time division multiple access 1567TDOA time difference of arrival 1568TDP thermal design {point,power} 1569TDR time-domain reflectometry 1570TECO Text Editor and Corrector 1571TFT thin film transistor 1572TFTP Trivial File Transfer Protocol 1573TIAS try it and see 1574TIFF tagged image file format 1575TITS try it to see 1576TK temporal key 1577TKIP Temporal Key Integrity Protocol 1578TLA top level aggregator 1579TLB translation lookaside buffer 1580TLD top level domain 1581TLER time-limited error recovery 1582TLI transport layer interface 1583TLS thread local storage 1584TLS transport layer security 1585TM Turing machine 1586TM thermal monitor 1587TMG transmogrifier 1588TMDS transition minimized differential signaling 1589TMO timeout 1590TOD time of day 1591TOS terms of service 1592TOS trusted operating system 1593TOS type of service 1594TP transaction processing 1595TPI tracks per inch 1596TPM transactions per minute 1597TPM trusted platform module 1598TPR task priority register 1599TPS transactions per second 1600TPS transmission parameters signaling 1601TR task register 1602TR token ring 1603TRL timing recovery loop 1604TRNG true random number generator 1605TS terminal services 1606TS time series 1607TS time stamp 1608TS transport stream 1609TSAN Thread Sanitizer 1610TSC time stamp counter 1611TSD time stamp disable 1612TSDB time series database 1613TSL test, set, lock 1614TSO time sharing option 1615TSO Total Store Ordering 1616TSP Time-Stamp Protocol 1617TSP Tunnel Setup Protocol 1618TSP time synchronization protocol 1619TSP traveling salesman problem 1620TSS task state segment 1621TTL time to live 1622TTL transistor-transistor logic 1623TTM translation table maps 1624TTY teletype 1625TUI {terminal,text-based,textual} user interface 1626TX {transmit out,transmitter} 1627TXG transaction group 1628TZ time zone 1629UAC user {access,account} control 1630UAF use-after-free 1631UART universal asynchronous receiver/transmitter 1632UAT user acceptance testing 1633UB undefined behavior 1634UBSAN Undefined Behavior Sanitizer 1635UC uncacheable 1636UCS uniform-cost search 1637UCS unified computing system 1638UCS universal coded character set 1639UDI uniform driver interface 1640UDMA ultra DMA 1641UDO ultra density optical 1642UDP User Datagram Protocol 1643UEFI unified extensible firmware interface 1644UFS Unix File System 1645UGA universal graphics adapter 1646UI unit interval 1647UI user interface 1648UICC universal integrated circuit card 1649UID unique identifier 1650UID user identifier 1651UL upload 1652UMA uniform memory access 1653UMA upper memory area 1654UMB upper memory block 1655UML unified modeling language 1656UMPC ultra-mobile PC 1657UPNP universal plug and play 1658UPS uninterruptible power supply 1659URI uniform resource identifier 1660URL uniform resource locator 1661URN uniform resource name 1662USART universal synchronous/asynchronous receiver/transmitter 1663USB universal serial bus 1664USWC uncacheable speculative write combining 1665UT unit test 1666UTC coordinated universal time 1667UTF unicode transformation formats 1668UTP unshielded twisted pair 1669UTS UNIX time-sharing 1670UUCP Unix-to-Unix Copy Protocol 1671UUID universally unique identifier 1672UUOC useless use of cat 1673UUT unit under test 1674UX user experience 1675VA vertical alignment 1676VA virtual address 1677VA volt-ampere 1678VAX virtual address extension 1679VB Visual Basic 1680VCA variable-gain amplifier 1681VCC common collector voltage 1682VCCP virtual chassis control protocol 1683VCF voltage-controlled filter 1684VCM virtual channel memory 1685VCO voltage-controlled oscillator 1686VCP virtual chassis port 1687VCS version control system 1688VDPAU Video Decode and Presentation API for Unix 1689VES virtual execution system 1690VESA Video Electronics Standards Association 1691VFO variable-frequency oscillator 1692VFS virtual file system 1693VG volume group 1694VGA Video Graphics Array 1695VHDCI very high density cable interconnect 1696VID {VLAN,voltage level} identifier 1697VIM Vi IMproved 1698VIPT virtually indexed, physically tagged 1699VIVT virtually indexed, virtually tagged 1700VLAN virtual local area network 1701VLD variable-length decoding 1702VLIW very long instruction word 1703VLSI very large scale integration 1704VLSM variable length subnet mask 1705VM virtual {machine,memory} 1706VME virtual mode extension 1707VMX vector multimedia extensions 1708VMX virtual machine extensions 1709VNC virtual network computing 1710VOD video on demand 1711VPD vital product data 1712VPN virtual private network 1713VPWS virtual private wire service 1714VR virtual reality 1715VRAM video random access memory 1716VRF virtual routing and forwarding 1717VRM voltage regulator module 1718VROC Virtual RAID On CPU 1719VRRP Virtual Router Redundancy Protocol 1720VSTP VLAN Spanning Tree Protocol 1721VTP VLAN Trunking Protocol 1722VXFS Veritas file sytem 1723VXVM Veritas volume manager 1724W watt 1725W3C World Wide Web Consortium 1726WAFL write anywhere file layout 1727WAMP Web Application Messaging Protocol 1728WAN wide area network 1729WAP Wireless Application Protocol 1730WAP wireless access point 1731WDM Windows Driver Model 1732WDDM Windows Display Driver Model 1733WDT watchdog timer 1734WEP Wired Equivalent Privacy 1735WFI wait for interrupt 1736WFQ weighted fair queuing 1737WH write hit 1738WHEA Windows hardware error architecture 1739WIFI wireless fidelity 1740WLAN wireless local area network 1741WM write miss 1742WMI Windows Management Instrumentation 1743WOL Wake-on-LAN 1744WOM Wake-on-Modem 1745WOR Wake-on-Ring 1746WORM write once read many 1747WP WordPerfect 1748WP word processor 1749WP write protect 1750WPA Wi-Fi Protected Access 1751WPA2 Wi-Fi Protected Access II 1752WPAD web proxy auto-discovery protocol 1753WPS Wi-Fi Protected Setup 1754WRAM window random access memory 1755WS web services 1756WTC write through caching 1757WTD weighted tail drop 1758WWAN wireless wide area network 1759WWW world wide web 1760WYSIAYG what you see is all you get 1761WYSIWYG what you see is what you get 1762XBAR crossbar 1763XDMCP X Display Manager control protocol 1764XER XML encoding rules 1765XGA Extended Graphics Array 1766XHR XMLHttpRequest 1767XIP execute in place 1768XML Extensible Markup Language 1769XNA XNA's not acronymed 1770XNS Xerox network systems 1771XOR exclusive or 1772XP extreme programming 1773XSI X/Open System Interface 1774XSL extensible stylesheet language 1775XSLT extensible stylesheet language transformations 1776XSS cross site scripting 1777XT extended technology 1778XTACACS extended terminal access controller access-control system 1779XTI X/Open transport interface 1780XUL XML user interface language 1781YACC yet another compiler compiler 1782YAML YAML ain't markup language 1783YANG yet another next generation 1784YAWPFAPR you are welcome; please file a problem report 1785YP Yellow Pages 1786YTD year to date 1787ZAP ZFS attribute processor 1788ZBR zone bit recording 1789ZFOD zero-filled on demand 1790ZFS zettabyte file system 1791ZIF zero insertion force 1792ZIFS zero insertion force socket 1793ZIL ZFS intent log 1794ZMA zone multicast address 1795ZOI zero one infinity 1796ZOI zone of influence 1797ZPL ZFS Posix layer 1798ZVOL ZFS Volume 1799