acronyms.comp revision 1.306
1$NetBSD: acronyms.comp,v 1.306 2020/06/05 19:45:51 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 120AWDL Apple wireless direct link 121BA byte align 122BAL basic assembly language 123BAR base address register 124BBS bulletin board system 125BCC blind carbon copy 126BCD binary coded decimal 127BCH boot console handler 128BCR byte count register 129BCS base configuration space 130BD baud 131BDD binary decision diagram 132BDI bit deinterleave 133BDUF big design up front 134BEDO burst extended data output 135BER basic encoding rules 136BER bit error {rate,ratio} 137BERT boot error record table 138BFD bidirectional forwarding detection 139BFD binary {file,format} descriptor 140BFKL big fscking kernel lock 141BFS breadth-first search 142BFT binary file transfer 143BGA ball grid array 144BGP Border Gateway Protocol 145BGPSEC BGP Security 146BIND Berkeley Internet Name Daemon 147BIOS Basic Input/Output System 148BIOS built-in operating system 149BIST built-in self-test 150BIU bus interface unit 151BKDG BIOS and kernel developer's guide 152BLAS basic linear algebra subprograms 153BLC back light control 154BLE Bluetooth low energy 155BLOB binary large object 156BM bus master 157BMC baseboard management controller 158BMP basic multilingual plane 159BMP bitmap image file 160BMIC bus master interface controller 161BN boundary neutral 162BNF Backus-Naur form 163BO binary output 164BOF beginning of file 165BOM beginning of message 166BOM byte order mark 167BP base pointer 168BP boot processor 169BPB BIOS parameter block 170BPDU bridge protocol data unit 171BPF Berkeley Packet Filter 172BPI bits per inch 173BPM business process modelling 174BPS bits per second 175BPSK binary phase shift keying 176BQS Berkeley quality software 177BRE basic regular expression 178BS backspace 179BS binary sequence 180BSA basic service area 181BSD Berkeley Software Distribution 182BSDP Boot Service Discovery Protocol 183BSF bit scan forward 184BSOD blue screen of death 185BSP binary space partition 186BSP board support package 187BSP bootstrap processor 188BSR bit scan reverse 189BSS basic service set 190BSS block started by symbol 191BSSID basic service set identifier 192BT BitTorrent 193BT Bluetooth 194BT bit test 195BTC bit test [and] complement 196BTM bus transport mechanism 197BTR bit test [and] reset 198BTS bit test [and] set 199BTS bug tracking system 200BW bandwidth 201BWM block-write mode 202BUAG big ugly ASCII graphic 203CA certificate authority 204CACLS change access control lists 205CAD computer-aided design 206CAM computer assisted manufacturing 207CAM conditional access module 208CAM content addressable memory 209CARP Common Address Redundancy Protocol 210CAS column address strobe 211CAS compare and swap 212CAS computer algebra system 213CASE computer aided software engineering 214CAU control access unit 215CAV constant angular velocity 216CBC cipher block chaining 217CBR constant bit rate 218CC carbon copy 219CCC Chaos Computer Club 220CCD charge coupled device 221CCI co-channel interferer 222CCNUMA cache-coherent non-uniform memory access 223CCTL command completion time limit 224CD cache disable 225CD compact disc 226CDDA compact disc digital audio 227CDL compiler description language 228CDMA code division multiple access 229CDP Cisco Discovery Protocol 230CDRAM cache dynamic random access memory 231CER canonical encoding rules 232CE customer edge 233CF compact flash 234CFB cipher feedback 235CFG context-free grammar 236CFG control-flow graph 237CFI control-flow integrity sanitizer 238CG control gate 239CGA Color Graphics Adapter 240CGI common gateway interface 241CGN Carrier-Grade NAT 242CHAP Challenge-Handshake Authentication Protocol 243CHFS chip file system 244CHS cylinder/head/sector 245CI continuous integration 246CI {common,component} interface 247CIA confidentiality, integrity, availability 248CIDR Classless Inter-Domain Routing 249CIF common intermediate format 250CIFS Common Internet File System 251CIL common intermediate language 252CIR carrier-to-interference ratio 253CIS contact image sensor 254CISC complex instruction set {computer,computing} 255CJK Chinese, Japanese, [and] Korean 256CLF common log format 257CLI command line interface 258CLI common language infrastructure 259CLR common language runtime 260CLS common language specification 261CLTT closed loop thermal throttling 262CLUT color look-up table 263CLV constant linear velocity 264CM configuration management 265CMA concert multithread architecture 266CMC chassis management controller 267CMC corrected machine check 268CMS {configuration,content,course} management system 269CMI control {management,method} interface 270CMOS complementary metal-oxide-semiconductor 271CMP chip multi-processing 272CMS content management system 273CMYK cyan magenta yellow black 274CN {common,canonical} name 275CNC computer numerical control 276CNR carrier-to-noise ratio 277COA change of authority 278COF current operating frequency 279COFDM coded orthogonal frequency division multiplexing 280COFF common object file format 281COM component object model 282COM computer on module 283COMA cache-only memory architecture 284CORBA common object request broker architecture 285COS class of service 286COW copy-on-write 287CP continuous pilot 288CPA chosen-plaintext attack 289CPB core performance boost 290CPC central processor complex 291CPC cpu performance counters 292CPE common phase error 293CPE common platform enumeration 294CPER common platform error record 295CPG clock pulse generator 296CPI cycles per instruction 297CPL current privilege level 298CPLD complex programmable logic device 299CPP C preprocessor 300CPS characters per second 301CPS continuation-passing style 302CPT command pass through 303CPU central processing unit 304CR carriage return 305CRC cyclic redundancy check 306CRL carrier recovery loop 307CRLF carriage return line feed 308CSU C start up 309CRT cathode ray tube 310CRUD create, read, update, and delete 311CS cable select 312CS chip select 313CS code segment 314CS computer science 315CSDL {common,conceptual} schema definition language 316CSI channel state information 317CSI common system interface 318CSMA carrier sense multiple access 319CSMA/CA carrier sense multiple access with collision avoidance 320CSMA/CD carrier sense multiple access with collision detection 321CSP communicating sequential processes 322CSP content security policy 323CSP constrain satisfaction problems 324CSP cryptographic service provider 325CSR control [and] status registers 326CSRG Computer Systems Research Group 327CSS cascading style sheets 328CST common spanning tree 329CSV comma-separated values 330CTF compact c type format 331CTM close to metal 332CTR counter [mode] 333CTS clear to send 334CTS common type system 335CUA common user access 336CUT coordinated universal time 337CV control voltage 338CVE common vulnerabilities and exposures 339CVS Concurrent Versions System 340DA destination address 341DAA distributed application architecture 342DAAP digital audio access protocol 343DAB digital audio broadcasting 344DAC digital [to] analog converter 345DAC discretionary access control 346DAD duplicate address detection 347DANE DNS-based Authentication of Named Entities 348DAO disk at once 349DAP Directory Access Protocol 350DAT digital audio tape 351DAT dynamic acceleration technology 352DB database 353DBA database administrator 354DBA dynamic bandwidth allocation 355DBB data bus buffer 356DBC design by contract 357DBL dynamic buffer limiting 358DBMS database management system 359DBS database server 360DC direct current 361DCC Direct Client-to-Client 362DCC direct cable connect 363DCD data carrier detect 364DCE data control equipment 365DCE distributed computing environment 366DCIM data center infrastructure management 367DCIM digital camera images 368DCL Digital Command Language 369DCOM distributed component object model 370DCOP Desktop COmmunication Protocol 371DCS data collection systems 372DCT discrete cosine transform 373DCU data cache unit 374DDC display data channel 375DDE dynamic data exchange 376DDI device drivers interface 377DDK device driver kit 378DDL data description language 379DDR double data rate 380DDS direct digital sound 381DDWG Digital Display Working Group 382DE debugging extensions 383DE desktop environment 384DEA data encryption algorithm 385DEC Digital Equipment Corporation 386DEK data encryption key 387DEP data execution prevention 388DER distinguished encoding rules 389DES Data Encryption Standard 390DF don't fragment 391DFA deterministic finite automaton 392DFC data flow control 393DFS depth first search 394DFS distributed file system 395DFSAN Data Flow Sanitizer 396DFT diagnostic function test 397DFT discrete Fourier transform 398DGL data generation language 399DGEMM double precision general matrix multiply 400DH Diffie-Hellman 401DHCP Dynamic Host Configuration Protocol 402DIA dedicated Internet access 403DIB device independent bitmap 404DIFS distributed inter-frame space 405DIMM dual inline memory module 406DIRT design in real time 407DKI driver/kernel interface 408DL diode logic 409DL discrete logarithm 410DL download 411DLCI data link connection identifier 412DLE data link escape 413DLL dynamic link library 414DLNA digital living network alliance 415DLP discrete logarithm problem 416DMA direct memory access 417DMI desktop management interface 418DMS document management system 419DMT discrete multitone modulation 420DMU data management layer 421DNARD Digital network appliance reference design 422DND drag and drop 423DNLC directory name lookup cache 424DNS Domain Name System 425DNSSEC DNS Security Extensions 426DOE distributed object environment 427DOF data over fibre 428DOM document object model 429DOS denial of service 430DOS disk operating system 431DP DisplayPort 432DPC deferred procedure call 433DPCM differential pulse code modulation 434DPD dead peer detection 435DPI deep packet inspection 436DPI dots per inch 437DPL descriptor privilege level 438DPS Display PostScript 439DPST display power savings technology 440DRAAS disaster recovery as a service 441DRAM dynamic random access memory 442DRBG deterministic random bit generator 443DRI direct rendering infrastructure 444DRM digital rights management 445DRRS display refresh rate switching 446DS debug store 447DS differentiated services 448DSA digital signature algorithm 449DSAP destination service access point 450DSB double-sideband modulation 451DSCP differentiated services code point 452DSDT differentiated system descriptor table 453DSF device special file 454DSL dataset and snapshot layer 455DSL digital subscriber line 456DSL domain specific language 457DSLAM digital subscriber line access multiplexer 458DSN delivery status notification 459DSO dynamic shared object 460DSP digital signal processor 461DSSS direct sequence spread spectrum 462DTB device tree blob 463DTC device tree compiler 464DTD document type definition 465DTE data terminal equipment 466DTE dumb terminal emulator 467DTL diode-transistor logic 468DTLS datagram transport layer security 469DTS device tree source 470DTS digital thermal sensor 471DUT device under test 472DVB digital video broadcasting 473DVCS distributed version control system 474DVD digital versatile disc 475DVFS dynamic voltage and frequency scaling 476DVI device independent 477DVI Digital Visual Interface 478DVR digital video recorder 479E-XER extended XML encoding rules 480EABI embedded-application binary interface 481EAI Email Address Internationalization 482EAI Enterprise Application Integration 483EAP Extensible Authentication Protocol 484EAPOL EAP over Lan 485EAV entity-attribute-value model 486EAV ethernet audio/video bridging 487EBCDIC Extended Binary Coded Decimal Interchange Code 488EBDA Extended BIOS Data Area 489EBNF extended backus-naur form 490EBR extended boot record 491EC elliptic curve 492ECC elliptic curve cryptography 493ECC error correction code 494ECDH elliptic curve Diffie-Hellman 495ECDL elliptic curve discrete logarithm 496ECDLP elliptic curve discrete logarithm problem 497ECDSA elliptic curve digital signature algorithm 498ECL emitter-coupled logic 499ECN explicit congestion notification 500ECP enhanced capability port 501ECS enhanced chip set 502ECS extended configuration space 503EDAC error detection and correction 504EDAT enhanced dynamic acceleration technology 505EdDSA Edwards curve digital signature algorithm 506EDGE explicit data graph execution 507EDID extended display identification data 508EDO extended data out 509EDS electronical data sheet 510EDSAC electronic delay storage automatic calculator 511EDVAC electronic discrete variable automatic computer 512EEE energy efficient ethernet 513EEPROM electrically erasable programmable read only memory 514EFI extensible firmware interface 515EFL emitter follower logic 516EFM eight to fourteen modulation 517EFS extent file system 518EGA Enhanced Graphics Adapter 519EGP exterior gateway protocol 520EH extension header 521EIDE enhanced IDE 522EISA extended industry standard architecture 523EINJ error injection table 524ELF executable and linking format 525ELS entry level system 526EMI electro-magnetic interference 527EMP electro-magnetic pulse 528EMR electro-magnetic radiation 529EMACS Editor MACroS 530ENIAC electronic numerical integrator and computer 531EOF end of file 532EOI end of interrupt 533EOIS end of interactive support 534EOL end of life 535EOL end of line 536EOT end of transmission 537EPIC explicitly parallel instruction computing 538EPP enhanced parallel port 539EPRML extended partial response, maximum likelihood 540EPROM erasable programmable read only memory 541EPT extended page tables 542ERC error recovery control 543ERD emergency recovery disk 544ERD entity relationship diagram 545ERE extended regular expression 546ERST error record serialization table 547ESAN Efficiency Sanitizer 548ESB enterprise service bus 549ESDI enhanced small disk interface 550ESDRAM enhanced synchronous dynamic random access memory 551ESI enclosure services interface 552ESS electronic switching system 553ESS extended service set 554ESSID extended service set identifier 555EST enhanced speedstep 556ETL extract, transform, load 557EU execution unit 558EULA end user license agreement 559FAT file allocation table 560FBRAM frame buffer random access memory 561FCIF full common intermediate format 562FCL fiber channel loop 563FCS frame check sequence 564FDC floppy disk controller 565FDD floppy disk drive 566FDDI fiber distributed data interface 567FDE full disk encryption 568FDT flattened device tree 569FEA finite element analysis 570FEC forward error correction 571FET field-effect transistor 572FF finite field 573FF form feed 574FFDH finite-field Diffie-Hellman 575FFH functional fixed hardware 576FFI foreign function interface 577FFM focus follows mouse 578FFS Fast File System 579FFS find first set 580FFT fast Fourier transform 581FG floating gate 582FHRP first hop redundancy protocol 583FHSS frequency hop spread spectrum 584FID frequency identifier 585FIFO first in, first out 586FILO first in, last out 587FIPS Federal Information Processing Standards 588FIR fast infrared 589FLOPS floating [point] operations per second 590FLOSS free/libre/open source software 591FM frequency modulation 592FMR false match rate 593FOSS free/open source software 594FPGA field programmable gate array 595FPM fast page mode 596FPR floating point register 597FPU floating point unit 598FQDN fully qualified domain name 599FRR false rejection rate 600FRU field replaceable unit 601FS file system 602FSB front side bus 603FSCK file system check 604FSF Free Software Foundation 605FSK frequency shift keying 606FSM finite-state machine 607FTA fault tree analysis 608FTL flash translation layer 609FTP File Transfer Protocol 610FTPS File Transfer Protocol Secure 611FUS fast user switching 612FWH firmware hub 613FWS folding white space 614GAL generic array logic 615GARP generic attribute registration protocol 616GAS generic address structure 617GC garbage collector 618GCM Galois counter mode 619GCR group-coded recording 620GDI Graphics Device Interface 621GDT global descriptor table 622GECOS general comprehensive operating supervisor 623GEM graphics environment manager 624GEM graphics execution manager 625GEMM general matrix multiply 626GENA general event notification architecture 627GHC Glasgow Haskell compiler 628GHES generic hardware error source 629GIC generic interrupt controller 630GID group identifier 631GIF graphics interchange format 632GLBP gateway load balancing protocol 633GMCH graphics and memory controller hub 634GNU GNU's Not Unix 635GOP graphics output protocol 636GOT global offset table 637GPE general purpose event 638GPF general protection fault 639GPG GNU Privacy Guard 640GPL [GNU] General Public License 641GPR general purpose register 642GPS generalized processor sharing 643GPT GUID partition table 644GPU graphics processing unit 645GR golden ratio 646GRE generic routing encapsulation 647GSI global system interrupt 648GUI graphical user interface 649GUID globally unique identifier 650GVFS git virtual file system 651HA high availability 652HAL hardware abstraction layer 653HAT hashed array tree 654HATEOAS hypermedia as the engine of application state 655HBA host bus adapter 656HCF halt and catch fire 657HCI host controller interface 658HCI human-computer interaction 659HCL hardware compatibility list 660HDCP High-bandwidth Digital Content Protection 661HDD hard disk drive 662HDL hardware description language 663HDMI High-Definition Multimedia Interface 664HDTV high-definition television 665HECI host embedded controller interface 666HEST hardware error source table 667HEVC high efficiency video coding 668HF high frequency 669HFM highest frequency mode 670HFS hierarchical file system 671HID human interface device 672HKP HTTP Keyserver Protocol 673HLL high-level language 674HMA high memory area 675HMI human-machine interface 676HOOD hierarchical object oriented design 677HP Hewlett-Packard 678HPC high performance computing 679HPD hot plug detection 680HPET high precision event timer 681HSM hardware security module 682HSM hierarchical storage management 683HSRP hot standby router protocol 684HT hyper-threading 685HTC hardware thermal control 686HTCC high temperature co-fired ceramic 687HTML HyperText Markup Language 688HTT hyper-threading technology 689HTTP Hypertext Transfer Protocol 690HTTPS Hypertext Transfer Protocol Secure 691HVM hardware virtual machine 692HVDS High-Voltage Differential Signaling 693HWASAN Hardware-assisted Address Sanitizer 694HZ Hertz 695I2O intelligent input/output 696IA information assurance 697IAAS infrastructure as a service 698IANA Internet Assigned Numbers Authority 699IBC iterated block cipher 700IBM International Business Machines 701IBPI international blinking pattern interpretation 702IBS instruction based sampling 703IBSS independent basic service set 704IC integrated circuit 705ICA independent computer architecture 706ICACLS integrity control access control lists 707ICB Internet Citizen's Band 708ICE in-circuit emulator 709ICE internal compiler error 710ICH I/O controller hub 711ICMP Internet Control Message Protocol 712ICT information and communications technology 713ICW initialization command word 714IDA Intel dynamic acceleration 715IDCMP Intuition direct communication message port 716IDCT inverse discrete cosine transform 717IDE integrated development environment 718IDE integrated drive electronics 719IDPS intrusion detection [and] prevention system 720IDRP inter-domain routing protocol 721IDS intrusion detection system 722IDT interrupt descriptor table 723IE Internet Explorer 724IEC International Electrotechnical Commission 725IEEE Institute of Electrical and Electronics Engineers 726IESG Internet Engineering Steering Group 727IETF Internet Engineering Task Force 728IF intermediate frequency 729IFCM isochronous flow control mode 730IFF Interchange File Format 731IFS internal field separator 732IGD Internet gateway device 733IGMP Internet Group Management Protocol 734IGP interior gateway protocol 735IHV independent hardware vendor 736IKE Internet key exchange 737ILM internal loopback mode 738ILOM integrated lights-out management 739ILP instruction level parallelism 740IM instant messaging 741IME input method editor 742IMAP Internet Message Access Protocol 743IMC integrated memory controller 744IMCR interrupt mode configuration register 745IMR interrupt mask register 746IMS information management system 747IMSI international mobile subscriber identity 748INCITS InterNational Committee for Information Technology Standards 749INODE index node 750IO input/output 751IOCTL input/output control 752IOM input/output managers 753IOMMU input/output memory management unit 754IOT Internet of Things 755IP Internet Protocol 756IP intellectual property 757IPC instructions per cycle 758IPC interprocess communication 759IPCF interprocess communication facility 760IPE integrated programming environment 761IPI intelligent peripheral interface 762IPI interprocessor interrupt 763IPL Initial Program Load 764IPL Interrupt Priority Level 765IPMB Intelligent Platform Management Bus 766IPMI Intelligent Platform Management Interface 767IPNG Internet Protocol, Next Generation 768IPS in-plane switching 769IPS intrusion prevention system 770IPSEC Internet Protocol Security 771IRC Internet Relay Chat 772IRDA infrared data association 773IRDP ICMP Router Discovery Protocol 774IRQ interrupt request 775IRQL interrupt request level 776IRR interrupt request register 777IRTF Internet Research Task Force 778IS information system 779ISA industry standard architecture 780ISA instruction set architecture 781ISE instant secure erase 782ISDN integrated services digital network 783ISI inter-symbol interference 784ISL initial system load 785ISM industrial, scientific, [and] medical 786ISMS information system management system 787ISN initial serial number 788ISO International Standards Organization 789ISOC Internet Society 790ISP Internet service provider 791ISR in-service register 792ISR interrupt service routine 793IST internal spanning tree 794IST interrupt stack table 795ISV independent software vendor 796IT information technology 797ITB Intel Turbo Boost 798ITIL information technology infrastructure library 799ITP in-target probe 800ITSM IT service management 801IV initialization vector 802IVT interrupt vector table 803JBOD just a bunch of disks 804JCL Job Control Language 805JFET junction [gate] field-effect transistor 806JIT just in time 807JPEG Joint Photographic Experts Group 808JRE Java Runtime Environment 809JSON JavaScript Object Notation 810JTAG joint test action group 811KASLR kernel address space layout randomization 812KB keyboard 813KB kilobyte 814KBD keyboard 815KBD kilobaud 816KCS keyboard controller style 817KLOC thousand lines of code 818KMS kernel-mode setting 819KPI kernel programming interface 820KVA kernel virtual address 821KVM kernel virtual machine 822KVM kernel virtual memory 823KVM keyboard, video, [and] mouse 824L2CAP link layer control and adaptation protocol 825LAG link aggregation group 826LAMP Linux Apache MySQL {Perl,PHP,Python} 827LAN local area network 828LAPIC local advanced programmable interrupt controller 829LAR load access rights 830LBA logical block addressing 831LBNF labeled backus-naur form 832LBS location-based service 833LCD liquid crystal display 834LCP link control protocol 835LDA local delivery agent 836LDAP Lightweight Directory Access Protocol 837LDR light-dependent resistor 838LDT local descriptor table 839LE logical extent 840LED light emitting diode 841LELL low energy link layer 842LER label edge router 843LF line feed 844LF low frequency 845LFM lowest frequency mode 846LFN long file names 847LFO low-frequency oscillation 848LFS log-structured file system 849LFU least frequently used 850LHP loop heat pipe 851LIF logical interchange format 852LIFO last in, first out 853LILO LInux LOader 854LILO last in, last out 855LINT local interrupt 856LIR local Internet registry 857LISP LISt Processor 858LISP Locator/ID Separation Protocol 859LKM {Linux,loadable} kernel module 860LKML Linux kernel mailing list 861LL load linked 862LL/SC load linked/store conditional 863LLC logical link control 864LLD low-level design 865LLDD low-level design document 866LLDP link layer discovery protocol 867LLF low level format 868LLMNR link-local multicast name resolution 869LLVM Low Level Virtual Machine 870LM long mode 871LMCE local machine check exception 872LMI local management interface 873LMM link management mode 874LMP link management protocol 875LNO loop nest optimization 876LOC lines of code 877LOM lights-out management 878LPE Linux performance events 879LPC low pin count 880LPS local positioning system 881LRC longitudinal redundancy check 882LRM left-to-right mark 883LRO left-to-right override 884LRU least recently used 885LS link state 886LSAN Leak Sanitizer 887LSB Linux standards base 888LSB least significant {bit,byte} 889LSI large scale integration 890LSL load segment limit 891LSM log structured merge 892LSN Large Scale NAT 893LSN log sequence number 894LSO large send offload 895LSR label switch router 896LTCC low temperature co-fired ceramic 897LTO linear tape-open 898LTO link time optimization 899LTR left to right 900LTR load task register 901LTR letter(-sized paper) 902LTS long term support 903LUA Lua Uppercase Accident 904LUN logical unit number 905LV logical volume 906LVM logical volume management 907LVT local vector table 908LVDS Low-Voltage Differential Signaling 909LWP light-weight process 910LZSS Lempel Ziv Storer Szymanski 911LZW Lempel Ziv Welch 912MAB MAC authentication bypass 913MAC mandatory access control 914MAC {media,medium} access control 915MAC message authentication {check,code} 916MADT multiple APIC descriptor table 917MAMR microwave-assisted magnetic recording 918MB megabyte 919MBA multi-boot agent 920MBR master boot record 921MBS megabits per second 922MC memory controller 923MCA machine check architecture 924MCA MicroChannel architecture 925MCC multiversion concurrency control 926MCE machine check exception 927MCGA Multi-Color Graphics Array 928MCH memory controller hub 929MCLAG multi-chassis link aggregation group 930MCM multi-chip module 931MCQ memory controlled queue 932MD machine-dependent 933MD-SAL model-driven service abstraction layer 934MDA mail delivery agent 935MDA Monochrome Display Adapter 936MDC Management Data Clock 937MDI Medium Dependent Interface 938MDI-X Medium Dependent Interface Crossover 939MDIO Management Data Input/Output 940MDMX MIPS Digital Media eXtension 941MDRAM multibank dynamic random access memory 942MESI modified, exclusive, shared, invalid 943MFC merge from current 944MFC Microsoft Foundation Classes 945MFM modified frequency modulation 946MFU most frequently used 947MGCP media gateway control protocol 948MHU message handling unit 949MI machine-independent 950MI machine interface 951MIB management information base 952MIC message integrity {check,code} 953MID mobile Internet device 954MIDI musical instrument digital interface 955MIF management information format 956MII media independent interface 957MIM man in the middle 958MIMD multiple instruction, multiple data 959MIME Multipurpose Internet Mail Extensions 960MIMO multiple input multiple output 961MIPS million instructions per second 962MIPS Microprocessor without Interlocked Pipeline Stages 963MISD multiple instruction, single data 964MIT Massachusetts Institute of Technology 965MITM man in the middle 966ML machine language 967ML machine learning 968ML mailing list 969ML markup language 970ML maximum likelihood 971MLAG multi-chassis link aggregation group 972MLC multi-level cell 973MLD multicast listener discovery 974MLHP micro loop heat pipe 975MMF multi-mode fiber 976MMIC monolithic microwave integrated circuit 977MMIO memory mapped input/output 978MMORPG massive multiplayer online role playing game 979MMRP multiple MAC registration protocol 980MMU memory management unit 981MMX matrix math extension 982MMX multimedia extension 983MMX multiple math extension 984MO magneto-optical 985MOESI modified, owned, exclusive, shared, invalid 986MOF maximum operating frequency 987MOSFET metal-oxide-semiconductor field-effect transistor 988MOSI modified, owned, shared, invalid 989MP multi-platform 990MP multiplayer 991MP {multiprocessing,multiprocessor} 992MPEG moving picture experts group 993MPI message passing interface 994MPLS Multiprotocol Label Switching 995MPP massively parallel processor 996MPS memory pool system 997MPS multiprocessor specification 998MQTT Message Queuing Telemetry Transport 999MR modem ready 1000MRO method resolution order 1001MRP multiple registration protocol 1002MRU most recently used 1003MS Microsoft 1004MSAN Memory Sanitizer 1005MSB most significant {bit,byte} 1006MSC message sequence chart 1007MSE mean square error 1008MSF minutes seconds frames 1009MSI message signaled interrupt 1010MSI modified, shared, invalid 1011MSR {machine state,model-specific} register 1012MSS maximum segment size 1013MSTP Multiple Spanning Tree Protocol 1014MT machine translation 1015MTA mail transfer agent 1016MTBF mean time between failures 1017MTP media transfer protocol 1018MTRR memory type range register 1019MTTF mean time to failure 1020MTU maximum transmission unit 1021MUA mail user agent 1022MUD multi-user domain 1023MVCC multiversion concurrency control 1024MVR multicast VLAN registration 1025MVRP multiple VLAN registration protocol 1026MWE module width encoding 1027MX mail exchange 1028NACK negative acknowledgement 1029NAK negative acknowledgement 1030NAN neighbor awareness networking 1031NAN not a number 1032NAPT Network Address Port Translation 1033NAS network attached storage 1034NAT network address translation 1035NAV network allocation vector 1036NC numerical control 1037NC-SI network controller sideband interface 1038NCO numerically-controlled oscillator 1039NCP Network Control Protocol 1040NCSI network connectivity status indicator 1041NCQ native command queuing 1042ND neighbor discovery 1043NDFA nondeterministic finite automaton 1044NDIS network driver interface specification 1045NE numeric error 1046NEWS Network extensible Window System 1047NFA nondeterministic finite automaton 1048NFC near-field communication 1049NFCI no functional change intended 1050NFS network file system 1051NFV network function virtualization 1052NIA next instruction address 1053NIC network information center 1054NIC network interface card 1055NIDS network intrusion detection system 1056NIP network interface protocol 1057NIPS network intrusion prevention system 1058NIS network information service 1059NIST National Institute of Standards and Technology 1060NLS native language support 1061NMI non-maskable interrupt 1062NNTP Network News Transfer Protocol 1063NOC network operations center 1064NOP no operation 1065NOS network operating system 1066NP nondeterministic polynomial time 1067NRND not recommended for new designs 1068NRZ non-return to zero 1069NSA nation-state adversary 1070NSA no such agency 1071NSA National Security Agency 1072NTM non-deterministic Turing machine 1073NTP Network Time Protocol 1074NUMA non-uniform memory access 1075NURBS non-uniform rational basis spline 1076NVMM NetBSD Virtual Machine Monitor 1077NVMM non-volatile main memory 1078NVRAM non-volatile random access memory 1079NW not write-through 1080NX no execute 1081OAEP optimal asymmetric encryption padding 1082OAM operations, administration, and {management,maintenance} 1083OBO off by one 1084OBOE off by one error 1085OCL object constraint language 1086OCR optical character recognition 1087ODE offline device environment 1088ODI open data-link interface 1089ODM object data manager 1090ODCM on-demand clock modulation 1091ODT on-die termination 1092OEM original equipment manufacturer 1093OFB output feedback 1094OFDM orthogonal frequency division multiplexing 1095OFET organic field-effect transistor 1096OLAP online analytical processing 1097OLE object linking and embedding 1098OLTP online transaction processing 1099ONFI open nand flash interface 1100OO OpenOffice 1101OO object oriented 1102OOB out of band 1103OOE out of order execution 1104OOM out of memory 1105OOO OpenOffice.org 1106OOP object oriented programming 1107OOPS object oriented programming systems 1108OOSE object oriented software engineering 1109OPM operations per minute 1110OPS operations per second 1111OQL Object Query Language 1112ORB object request broker 1113ORM object-relational mapping 1114OS operating system 1115OSD object-based storage device 1116OSD open source definition 1117OSF open software foundation 1118OSI Open Source Initiative 1119OSI open systems interconnection 1120OSPF open shortest path first 1121OSPM OS power management 1122OSS open sound system 1123OSS open source software 1124OSVW operating system visible workarounds 1125OTP one time password 1126OTP open telecom platform 1127OU organizational unit 1128OUI organizationally unique identifier 1129OWASP Open Web Application Security Project 1130OWL Web Ontology Language 1131P2P PCI to PCI 1132P2P peer to peer 1133PA phase accumulator 1134PA physical address 1135PAAS platform as a service 1136PAC phase-amplitude converter 1137PAE physical address extension 1138PAGP port aggregation protocol 1139PAL phase alternating line 1140PAL programmable array logic 1141PAM pluggable authentication modules 1142PAM pulse amplitude modulation 1143PAP password authentication protocol 1144PAT page attribute table 1145PAT port address translation 1146PATA parallel ATA 1147PAX portable archive exchange 1148PBE pending break encoding 1149PBE programming by example 1150PC personal computer 1151PC program counter 1152PCB printed circuit board 1153PCB process control block 1154PCB Protocol Control Block 1155PCBC propagating cipher block chaining 1156PCC Portable C Compiler 1157PCD page-level cache disable 1158PCE path computation element 1159PCE performance-monitor counter enable 1160PCEP Path Computation Element Protocol 1161PCH platform controller hub 1162PCI peripheral component interconnect 1163PCM phase change memory 1164PCM pulse code modulation 1165PCMCIA Personal Computer Memory Card International Association 1166PCP Port Control Protocol 1167PD public domain 1168PDA personal digital assistant 1169PDA pushdown automaton 1170PDAG propositional directed acyclic graph 1171PDB power distribution board 1172PDF portable document format 1173PDM pulse-duration modulation 1174PDN pull-down network 1175PDP page {descriptor,directory} page 1176PDS product data sheet 1177PDU protocol data unit 1178PE protection enable 1179PE provider edge 1180PEAP Protected EAP 1181PECI platform environment control interface 1182PEP protocol extension protocol 1183PER packed encoding rules 1184PFS perfect forward secrecy 1185PGAS partitioned global address space 1186PGE page global enable 1187PGP Pretty Good Privacy 1188PHB PCI host bridge 1189PHP PHP: Hypertext Preprocessor 1190PIC performance instrumentation counters 1191PIC position independent code 1192PIC programmable interrupt controller 1193PICNIC problem in chair, not in computer 1194PID process id 1195PIE position independent executable 1196PIL Priority Interrupt Level 1197PIM personal information manager 1198PIM platform-independent model 1199PIO programmed input/output 1200PIPT physically indexed, physically tagged 1201PIQ prefetch input queue 1202PIT programmable interrupt timer 1203PIV personal identity verification 1204PIX Private Internet eXchange 1205PKCS public-key cryptography standards 1206PKI public key infrastructure 1207PLC programmable logic controller 1208PLD programmable logic device 1209PLL phase locked loop 1210PLRU pseudo LRU 1211PLTM package level thermal management 1212PM power management 1213PM {phase,pulse} modulation 1214PMC performance monitoring counters 1215PME power management event 1216PMEG page map entry group 1217PMI performance monitoring infrastructure 1218PMI platform management interrupt 1219PMIC power management integrated circut 1220PMIO port-mapped input/output 1221PMT photo-multiplier tube 1222PMU performance monitoring units 1223PMU power management unit 1224PNG portable network graphics 1225PNP plug and play 1226POE power over ethernet 1227POF probability of failure 1228POP Post Office Protocol 1229POP power on password 1230POR plan of record 1231POSIX Portable Operating System Interface [for Unix] 1232POST power on self test 1233POTS plain old telephone system 1234POWER Performance Optimization With Enhanced RISC 1235POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1236PP pair programming 1237PPB PCI [to] PCI bridge 1238PPC PowerPC 1239PPC Power Performance Computing 1240PPI pixels per inch 1241PPM pages per minute 1242PPP Point-to-Point Protocol 1243PPPOA Point-to-Point Protocol over ATM 1244PPPOE Point-to-Point Protocol over Ethernet 1245PPR processor programming reference 1246PPT powerpoint 1247PPT punched paper tape 1248PPU physics processing unit 1249PRAM Parameter RAM 1250PRBS pseudorandom bit sequence 1251PRG pseudorandom generator 1252PRF pseudorandom function [family] 1253PRML partial response, maximum likelihood 1254PRN pseudorandom {noise,number} 1255PRNG pseudorandom number generator 1256PROM programmable read only memory 1257PRP pseudorandom permutation 1258PRU Programmable Realtime Unit 1259PS PostScript 1260PSD power spectral density 1261PSE page size extensions 1262PSK phase shift keying 1263PSK pre-shared key 1264PSTN public switched telephone network 1265PSW program status word 1266PTE page table entry 1267PTLA pseudo top level aggregator 1268PTP page table page 1269PTV perceived target value 1270PU processing unit 1271PUC personal unblocking code 1272PUN physical unit number 1273PV physical volume 1274PVC permanent virtual circuit 1275PVG physical volume group 1276PVI protected-mode virtual interrupt 1277PVRST Per-VLAN rapid spanning tree 1278PVST Per-VLAN Spanning Tree 1279PWM pulse width modulation 1280PXE preboot execution environment 1281QA quality assurance 1282QAM quadrature amplitude modulation 1283QAM quality assurance management 1284QBE query by example 1285QC quality control 1286QDI quasi delay insensitive 1287QCIF quarter common intermediate format 1288QOS quality of service 1289QVL qualified vendor list 1290R/O read only 1291R/W read/write 1292RA receiver address 1293RA remote assistance 1294RA resource affinity 1295RA router advertisement 1296RAD rapid application development 1297RADIUS remote authentication dial-in user service 1298RAID redundant array of {independent,inexpensive} disks 1299RAM random access memory 1300RAS reliability, availability and serviceability 1301RAS remote access service 1302RAS restartable atomic sequence 1303RAS row address strobe 1304RBF radial basis function 1305RBNF routing backus-naur form 1306RBT red-black tree 1307RC release candidate 1308RC remote control 1309RC run commands 1310RCS Revision Control System 1311RCS revision control system 1312RCU read, copy, update 1313RDB Rigid Disk Block 1314RDBMS relational database management system 1315RDF Resource Description Framework 1316RDM relational data model 1317RDMA remote direct memory access 1318RDP remote desktop protocol 1319RDRAM Rambus DRAM 1320RE regular expression 1321REPL read, evaluate, print, loop 1322REST representational state transfer 1323RF radio frequency 1324RFB remote frame buffer 1325RFI radio frequency interference 1326RFO request for ownership 1327RFU reserved for future use 1328RGB red green blue 1329RGBA red green blue alpha 1330RGMII reduced gigabit media independent interface 1331RH read hit 1332RHEL Red Hat Enterprise Linux 1333RHL Red Hat Linux 1334RIB routing information base 1335RIFF Resource Interchange File Format 1336RIP Raster Image Processor 1337RIP Routing Information Protocol 1338RIR regional Internet registry 1339RISC reduced instruction set {computer,computing} 1340RKM ROM Kernel Manual 1341RLE run length encoding 1342RLL run length limited 1343RLO right-to-left override 1344RM read miss 1345RMCP Remote Management Control Protocol 1346RMI remote method invocation 1347RMO Relaxed Memory Ordering 1348RMPM rapid memory power management 1349RMS root mean square 1350RMW read, modify, write 1351RNG random number generator 1352ROM read only memory 1353RPC remote procedure call 1354RPKI resource PKI 1355RPL requested privilege level 1356RPM revolutions per minute 1357RPN reverse Polish notation 1358RPVST Rapid Per-VLAN Spanning Tree 1359RR random replacement 1360RR round robin 1361RS relay station 1362RSA Rivest, Shamir, [and] Adleman 1363RSIP Realm Specific IP 1364RSN Robust Secure Network 1365RSS really simple syndication 1366RSS residual sum of squares 1367RSTP Rapid Spanning Tree Protocol 1368RT real time 1369RTC real time clock 1370RTC real time computing 1371RTF rich text format 1372RTL register transfer language 1373RTL resistor-transistor logic 1374RTL right to left 1375RTOS real time operating system 1376RTS request to send 1377RTT round trip time 1378RUP rational unified process 1379RW Rabin-Williams 1380RWM read-write memory 1381RX {receive,receiver} 1382S/PDIF Sony/Philips Digital Interface Format 1383SA security advisory 1384SA security association 1385SA source address 1386SA structured analysis 1387SAAS software as a service 1388SABRE Semi-automated business research environment 1389SACD super audio compact disc 1390SAD security association database 1391SAF-TE SCSI accessed fault-tolerant enclosure 1392SAGE Semi-automated ground environment 1393SAL {service,system} abstraction layer 1394SAM serial access memory 1395SAM sum addressed memory 1396SAML security assertion markup language 1397SAN storage area network 1398SAP service access point 1399SAPIC streamlined advanced programmable interrupt controller 1400SASD structured analysis, structured design 1401SASI Shugart Associates System Interface 1402SASL simple authentication [and] security layer 1403SATA serial advanced technology attachment 1404SAX simple API for XML 1405SB sound blaster 1406SBSA server base system architecture 1407SBU standard build unit 1408SC store conditional 1409SCA source code analyzer 1410SCADA supervisory control and data acquisition 1411SCC single chip cloud 1412SCC source code control 1413SCCP skinny call control protocol 1414SCCS Source Code Control System 1415SCI scalable coherent interface 1416SCI system control interrupt 1417SCIM smart common input method 1418SCM software configuration management 1419SCM source code management 1420SCM storage-class memory 1421SCO synchronous connection orientated 1422SCP secure copy 1423SCP system control processor 1424SCPI system control and power interface 1425SCSI Small Computer System Interface 1426SCTP Stream Control Transmission Protocol 1427SDDC software defined data center 1428SDEI software delegated exception interface 1429SDI symbol deinterleave 1430SDK software development kit 1431SDL Simple Declarative Language 1432SDL Simple Direct-media Layer 1433SDLC {software,system,systems} development life cycle 1434SDN software defined networking 1435SDP Session Description Protocol 1436SDR software defined radio 1437SDRAM synchronous dynamic random access memory 1438SDS software defined storage 1439SDT syntax-directed translation 1440SEA synchronous external abort 1441SEGV segmentation violation 1442SED self-encrypting drive 1443SED stream editor 1444SEMB serial ATA enclosure management bridge 1445SEO search engine optimization 1446SES SCSI enclosure services 1447SFC sequential function chart 1448SFI simple firmware interface 1449SFI software fault isolation 1450SFTP SSH File Transfer Protocol 1451SFTP Serial File Transfer Protocol 1452SFTP Simple File Transfer Protocol 1453SGI Silicon Graphics, Inc 1454SGI software generated interrupt 1455SGMII serial gigabit media independent interface 1456SGPIO serial general purpose input/output 1457SGRAM synchronous graphics random access memory 1458SHA secure hash algorithm 1459SICP structure and interpretation of computer programs 1460SIDH supersingular isogeny Diffie-Hellman 1461SIEM security information and event management 1462SIF source input format 1463SIFS short inter-frame space 1464SIM subscriber identity module 1465SIMD single instruction, multiple data 1466SIMM single inline memory module 1467SIP Session Initiation Protocol 1468SIR signal-to-interference ratio 1469SIR slow infrared 1470SISD single instruction, single data 1471SLAAC stateless address auto-configuration 1472SLC single-level cell 1473SLDRAM synchronous-link dynamic random access memory 1474SLED single large expensive disk 1475SLI scalable link interface 1476SLI scan-line interleave 1477SLIC system license internal code 1478SLOC source lines of code 1479SLRU segmented LRU 1480SMA smart memory access 1481SMAF system management action field 1482SMAP Simple Mail Access Protocol 1483SMAP supervisor mode access prevention 1484SMART self-monitoring analysis and reporting technology 1485SMB Server Message Block 1486SMB system management bus 1487SMBIOS System Management BIOS 1488SMC system management controller 1489SMD storage module device 1490SMEP supervisor mode execution protection 1491SMF single mode fiber 1492SMI structure of management information 1493SMI system management interrupt 1494SMM system management mode 1495SMP serial management protocol 1496SMP symmetric multiprocessing 1497SMT simultaneous multithreading 1498SMTP Simple Mail Transfer Protocol 1499SMU system management unit 1500SNA systems network architecture 1501SNAP Sub-Network Access Protocol 1502SNIA Storage Networking Industry Association 1503SNMP Simple Network Management Protocol 1504SNR signal-to-noise ratio 1505SOA service oriented architecture 1506SOAP Simple Object Access Protocol 1507SOC system on chip 1508SOF start of frame 1509SOH start of header 1510SOHO small office/home office 1511SOL serial over LAN 1512SOM system on module 1513SP service pack 1514SP stack pointer 1515SPA storage pool allocator 1516SPAN switched port analyzer 1517SPARC scalable processor architecture 1518SPARQL SPARQL Protocol and RDF Query Language 1519SPD security policy database 1520SPD serial presence detect 1521SPDIF Sony/Philips digital interface format 1522SPI serial peripheral interface 1523SPI stateful packet inspection 1524SPL system interrupt priority level 1525SPL spinlock 1526SPMD single process, multiple data 1527SPR special purpose register 1528SPT sectors per track 1529SQA software quality assurance 1530SQCIF sub quarter common intermediate format 1531SQL Structured Query Language 1532SRAM static random access memory 1533SRC sample rate conversion 1534SRP SCSI RDMA protocol 1535SRR shaped round robin 1536SS self-snoop 1537SS stack segment 1538SSA static single assignment 1539SSAP source service access point 1540SSB single-sideband modulation 1541SSC spread spectrum clock 1542SSD solid state drive 1543SSE streaming SIMD extensions 1544SSFDC solid state floppy disc card 1545SSH secure shell 1546SSI server side includes 1547SSID service set identifier 1548SSTP secure socket tunneling protocol 1549SSL secure sockets layer 1550SSP stack smashing protection 1551STC software thermal control 1552STD state transition diagram 1553STM software transactional memory 1554STOMP Streaming Text Oriented Messaging Protocol 1555STP Spanning Tree Protocol 1556STP shielded twisted pair 1557STRG spanning tree root guard 1558SUN Stanford University Network 1559SUS Single Unix Specification 1560SUT system under test 1561SVC switched virtual circuit 1562SVG scalable vector graphics 1563SVGA Super Video Graphics Array 1564SVI {switch,switched} virtual interface 1565SVM secure virtual machine 1566SVM support vector machine 1567SVR System V Release 1568SVS Separate Virtual Space 1569SWF Shockwave Flash 1570SWIG simplified wrapper [and] interface generator 1571SYR symbol timing recovery 1572TA test assertion 1573TA transmitter address 1574TACACS terminal access controller access-control system 1575TAI international atomic time 1576TAO track at once 1577TAOCP The Art of Computer Programming 1578TAP Test Anything Protocol 1579TAS test and set 1580TB terabyte 1581TBNF transitional backus-naur form 1582TCB trace capture buffer 1583TCB trusted computing base 1584TCC thermal control circuit 1585TCL tool command language 1586TCP Transmission Control Protocol 1587TCQ tagged command queueing 1588TDC time [to] digital converter 1589TDD test-driven development 1590TDD time division duplex 1591TDM time division multiplexing 1592TDMA time division multiple access 1593TDOA time difference of arrival 1594TDP thermal design {point,power} 1595TDR time-domain reflectometry 1596TECO Text Editor and Corrector 1597TFT thin film transistor 1598TFTP Trivial File Transfer Protocol 1599TIAS try it and see 1600TIFF tagged image file format 1601TITS try it to see 1602TK temporal key 1603TKIP Temporal Key Integrity Protocol 1604TLA top level aggregator 1605TLB translation lookaside buffer 1606TLD top level domain 1607TLER time-limited error recovery 1608TLI transport layer interface 1609TLS thread local storage 1610TLS transport layer security 1611TM Turing machine 1612TM thermal monitor 1613TMG transmogrifier 1614TMDS transition minimized differential signaling 1615TMO timeout 1616TOD time of day 1617TOS terms of service 1618TOS trusted operating system 1619TOS type of service 1620TP transaction processing 1621TPI tracks per inch 1622TPM transactions per minute 1623TPM trusted platform module 1624TPR task priority register 1625TPS transactions per second 1626TPS transmission parameters signaling 1627TR task register 1628TR token ring 1629TRL timing recovery loop 1630TRNG true random number generator 1631TS terminal services 1632TS time series 1633TS time stamp 1634TS transport stream 1635TSAN Thread Sanitizer 1636TSC time stamp counter 1637TSD time stamp disable 1638TSDB time series database 1639TSL test, set, lock 1640TSO time sharing option 1641TSO Total Store Ordering 1642TSP Time-Stamp Protocol 1643TSP Tunnel Setup Protocol 1644TSP time synchronization protocol 1645TSP traveling salesman problem 1646TSS task state segment 1647TTL time to live 1648TTL transistor-transistor logic 1649TTM translation table maps 1650TTY teletype 1651TUI {terminal,text-based,textual} user interface 1652TX {transmit out,transmitter} 1653TXG transaction group 1654TZ time zone 1655UAC user {access,account} control 1656UAF use-after-free 1657UART universal asynchronous receiver/transmitter 1658UAT user acceptance testing 1659UB undefined behavior 1660UBSAN Undefined Behavior Sanitizer 1661UC uncacheable 1662UCS uniform-cost search 1663UCS unified computing system 1664UCS universal coded character set 1665UDI uniform driver interface 1666UDMA ultra DMA 1667UDO ultra density optical 1668UDP User Datagram Protocol 1669UEFI unified extensible firmware interface 1670UFS Unix File System 1671UGA universal graphics adapter 1672UI unit interval 1673UI user interface 1674UICC universal integrated circuit card 1675UID unique identifier 1676UID user identifier 1677UL upload 1678UMA uniform memory access 1679UMA upper memory area 1680UMB upper memory block 1681UML unified modeling language 1682UMPC ultra-mobile PC 1683UPNP universal plug and play 1684UPS uninterruptible power supply 1685URI uniform resource identifier 1686URL uniform resource locator 1687URN uniform resource name 1688USART universal synchronous/asynchronous receiver/transmitter 1689USB universal serial bus 1690USWC uncacheable speculative write combining 1691UT unit test 1692UTC coordinated universal time 1693UTF unicode transformation formats 1694UTP unshielded twisted pair 1695UTS UNIX time-sharing 1696UUCP Unix-to-Unix Copy Protocol 1697UUID universally unique identifier 1698UUOC useless use of cat 1699UUT unit under test 1700UX user experience 1701VA vertical alignment 1702VA virtual address 1703VA volt-ampere 1704VAX virtual address extension 1705VB Visual Basic 1706VCA variable-gain amplifier 1707VCC common collector voltage 1708VCCP virtual chassis control protocol 1709VCF voltage-controlled filter 1710VCM virtual channel memory 1711VCO voltage-controlled oscillator 1712VCP virtual chassis port 1713VCS version control system 1714VDPAU Video Decode and Presentation API for Unix 1715VES virtual execution system 1716VESA Video Electronics Standards Association 1717VFO variable-frequency oscillator 1718VFS virtual file system 1719VG volume group 1720VGA Video Graphics Array 1721VHDCI very high density cable interconnect 1722VID {VLAN,voltage level} identifier 1723VIM Vi IMproved 1724VIPT virtually indexed, physically tagged 1725VIVT virtually indexed, virtually tagged 1726VLAN virtual local area network 1727VLD variable-length decoding 1728VLIW very long instruction word 1729VLSI very large scale integration 1730VLSM variable length subnet mask 1731VM virtual {machine,memory} 1732VME virtual mode extension 1733VMX vector multimedia extensions 1734VMX virtual machine extensions 1735VNC virtual network computing 1736VOD video on demand 1737VPD vital product data 1738VPN virtual private network 1739VPWS virtual private wire service 1740VR virtual reality 1741VRAM video random access memory 1742VRF virtual routing and forwarding 1743VRM voltage regulator module 1744VROC Virtual RAID On CPU 1745VRRP Virtual Router Redundancy Protocol 1746VSTP VLAN Spanning Tree Protocol 1747VTP VLAN Trunking Protocol 1748VXFS Veritas file sytem 1749VXVM Veritas volume manager 1750W watt 1751W3C World Wide Web Consortium 1752WAFL write anywhere file layout 1753WAMP Web Application Messaging Protocol 1754WAN wide area network 1755WAP Wireless Application Protocol 1756WAP wireless access point 1757WDM Windows Driver Model 1758WDDM Windows Display Driver Model 1759WDT watchdog timer 1760WEP Wired Equivalent Privacy 1761WFI wait for interrupt 1762WFQ weighted fair queuing 1763WH write hit 1764WHEA Windows hardware error architecture 1765WIFI wireless fidelity 1766WLAN wireless local area network 1767WM write miss 1768WMF Windows meta file 1769WMI Windows Management Instrumentation 1770WOL Wake-on-LAN 1771WOM Wake-on-Modem 1772WOR Wake-on-Ring 1773WORM write once read many 1774WP WordPerfect 1775WP word processor 1776WP write protect 1777WPA Wi-Fi Protected Access 1778WPA2 Wi-Fi Protected Access II 1779WPAD web proxy auto-discovery protocol 1780WPS Wi-Fi Protected Setup 1781WRAM window random access memory 1782WS web services 1783WTC write through caching 1784WTD weighted tail drop 1785WWAN wireless wide area network 1786WWW world wide web 1787WYSIAYG what you see is all you get 1788WYSIWYG what you see is what you get 1789XBAR crossbar 1790XDMCP X Display Manager control protocol 1791XER XML encoding rules 1792XGA Extended Graphics Array 1793XHR XMLHttpRequest 1794XIP execute in place 1795XML Extensible Markup Language 1796XNA XNA's not acronymed 1797XNS Xerox network systems 1798XOR exclusive or 1799XP extreme programming 1800XSI X/Open System Interface 1801XSL extensible stylesheet language 1802XSLT extensible stylesheet language transformations 1803XSS cross site scripting 1804XT extended technology 1805XTACACS extended terminal access controller access-control system 1806XTI X/Open transport interface 1807XUL XML user interface language 1808YACC yet another compiler compiler 1809YAML YAML ain't markup language 1810YANG yet another next generation 1811YAWPFAPR you are welcome; please file a problem report 1812YP Yellow Pages 1813YTD year to date 1814ZAP ZFS attribute processor 1815ZBR zone bit recording 1816ZFOD zero-filled on demand 1817ZFS zettabyte file system 1818ZIF zero insertion force 1819ZIFS zero insertion force socket 1820ZIL ZFS intent log 1821ZMA zone multicast address 1822ZOI zero one infinity 1823ZOI zone of influence 1824ZPL ZFS Posix layer 1825ZVOL ZFS Volume 1826