acronyms.comp revision 1.308
1$NetBSD: acronyms.comp,v 1.308 2020/07/11 13:04:29 nia 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 1288QOI quality of implementation 1289QOI quick order interface 1290QOS quality of service 1291QVL qualified vendor list 1292R/O read only 1293R/W read/write 1294RA receiver address 1295RA remote assistance 1296RA resource affinity 1297RA router advertisement 1298RAD rapid application development 1299RADIUS remote authentication dial-in user service 1300RAID redundant array of {independent,inexpensive} disks 1301RAM random access memory 1302RAS reliability, availability and serviceability 1303RAS remote access service 1304RAS restartable atomic sequence 1305RAS row address strobe 1306RBF radial basis function 1307RBNF routing backus-naur form 1308RBT red-black tree 1309RC release candidate 1310RC remote control 1311RC run commands 1312RCS Revision Control System 1313RCS revision control system 1314RCU read, copy, update 1315RDB Rigid Disk Block 1316RDBMS relational database management system 1317RDF Resource Description Framework 1318RDM relational data model 1319RDMA remote direct memory access 1320RDP remote desktop protocol 1321RDRAM Rambus DRAM 1322RE regular expression 1323REPL read, evaluate, print, loop 1324REST representational state transfer 1325RF radio frequency 1326RFB remote frame buffer 1327RFI radio frequency interference 1328RFO request for ownership 1329RFU reserved for future use 1330RGB red green blue 1331RGBA red green blue alpha 1332RGMII reduced gigabit media independent interface 1333RH read hit 1334RHEL Red Hat Enterprise Linux 1335RHL Red Hat Linux 1336RIB routing information base 1337RIFF Resource Interchange File Format 1338RIP Raster Image Processor 1339RIP Routing Information Protocol 1340RIR regional Internet registry 1341RISC reduced instruction set {computer,computing} 1342RKM ROM Kernel Manual 1343RLE run length encoding 1344RLL run length limited 1345RLO right-to-left override 1346RM read miss 1347RMCP Remote Management Control Protocol 1348RMI remote method invocation 1349RMO Relaxed Memory Ordering 1350RMPM rapid memory power management 1351RMS root mean square 1352RMW read, modify, write 1353RNG random number generator 1354ROM read only memory 1355RPC remote procedure call 1356RPKI resource PKI 1357RPL requested privilege level 1358RPM revolutions per minute 1359RPN reverse Polish notation 1360RPVST Rapid Per-VLAN Spanning Tree 1361RR random replacement 1362RR round robin 1363RS relay station 1364RSA Rivest, Shamir, [and] Adleman 1365RSIP Realm Specific IP 1366RSN Robust Secure Network 1367RSS really simple syndication 1368RSS residual sum of squares 1369RSTP Rapid Spanning Tree Protocol 1370RT real time 1371RTC real time clock 1372RTC real time computing 1373RTF rich text format 1374RTL register transfer language 1375RTL resistor-transistor logic 1376RTL right to left 1377RTOS real time operating system 1378RTS request to send 1379RTT round trip time 1380RUP rational unified process 1381RW Rabin-Williams 1382RWM read-write memory 1383RX {receive,receiver} 1384S/PDIF Sony/Philips Digital Interface Format 1385SA security advisory 1386SA security association 1387SA source address 1388SA structured analysis 1389SAAS software as a service 1390SABRE Semi-automated business research environment 1391SACD super audio compact disc 1392SAD security association database 1393SAF-TE SCSI accessed fault-tolerant enclosure 1394SAGE Semi-automated ground environment 1395SAL {service,system} abstraction layer 1396SAM serial access memory 1397SAM sum addressed memory 1398SAML security assertion markup language 1399SAN storage area network 1400SAP service access point 1401SAPIC streamlined advanced programmable interrupt controller 1402SASD structured analysis, structured design 1403SASI Shugart Associates System Interface 1404SASL simple authentication [and] security layer 1405SATA serial advanced technology attachment 1406SAX simple API for XML 1407SB sound blaster 1408SBSA server base system architecture 1409SBU standard build unit 1410SC store conditional 1411SCA source code analyzer 1412SCADA supervisory control and data acquisition 1413SCC single chip cloud 1414SCC source code control 1415SCCP skinny call control protocol 1416SCCS Source Code Control System 1417SCI scalable coherent interface 1418SCI system control interrupt 1419SCIM smart common input method 1420SCM software configuration management 1421SCM source code management 1422SCM storage-class memory 1423SCO synchronous connection orientated 1424SCP secure copy 1425SCP system control processor 1426SCPI system control and power interface 1427SCSI Small Computer System Interface 1428SCTP Stream Control Transmission Protocol 1429SDDC software defined data center 1430SDEI software delegated exception interface 1431SDI symbol deinterleave 1432SDK software development kit 1433SDL Simple Declarative Language 1434SDL Simple Direct-media Layer 1435SDLC {software,system,systems} development life cycle 1436SDN software defined networking 1437SDP Session Description Protocol 1438SDR software defined radio 1439SDRAM synchronous dynamic random access memory 1440SDS software defined storage 1441SDT syntax-directed translation 1442SEA synchronous external abort 1443SEGV segmentation violation 1444SED self-encrypting drive 1445SED stream editor 1446SEMB serial ATA enclosure management bridge 1447SEO search engine optimization 1448SES SCSI enclosure services 1449SFC sequential function chart 1450SFI simple firmware interface 1451SFI software fault isolation 1452SFTP SSH File Transfer Protocol 1453SFTP Serial File Transfer Protocol 1454SFTP Simple File Transfer Protocol 1455SGI Silicon Graphics, Inc 1456SGI software generated interrupt 1457SGMII serial gigabit media independent interface 1458SGPIO serial general purpose input/output 1459SGRAM synchronous graphics random access memory 1460SHA secure hash algorithm 1461SICP structure and interpretation of computer programs 1462SIDH supersingular isogeny Diffie-Hellman 1463SIEM security information and event management 1464SIF source input format 1465SIFS short inter-frame space 1466SIM subscriber identity module 1467SIMD single instruction, multiple data 1468SIMM single inline memory module 1469SIP Session Initiation Protocol 1470SIR signal-to-interference ratio 1471SIR slow infrared 1472SISD single instruction, single data 1473SLAAC stateless address auto-configuration 1474SLC single-level cell 1475SLDRAM synchronous-link dynamic random access memory 1476SLED single large expensive disk 1477SLI scalable link interface 1478SLI scan-line interleave 1479SLIC system license internal code 1480SLOC source lines of code 1481SLRU segmented LRU 1482SMA smart memory access 1483SMAF system management action field 1484SMAP Simple Mail Access Protocol 1485SMAP supervisor mode access prevention 1486SMART self-monitoring analysis and reporting technology 1487SMB Server Message Block 1488SMB system management bus 1489SMBIOS System Management BIOS 1490SMC system management controller 1491SMD storage module device 1492SMEP supervisor mode execution protection 1493SMF single mode fiber 1494SMI structure of management information 1495SMI system management interrupt 1496SMM system management mode 1497SMP serial management protocol 1498SMP symmetric multiprocessing 1499SMT simultaneous multithreading 1500SMTP Simple Mail Transfer Protocol 1501SMU system management unit 1502SNA systems network architecture 1503SNAP Sub-Network Access Protocol 1504SNIA Storage Networking Industry Association 1505SNMP Simple Network Management Protocol 1506SNR signal-to-noise ratio 1507SOA service oriented architecture 1508SOAP Simple Object Access Protocol 1509SOC system on chip 1510SOF start of frame 1511SOH start of header 1512SOHO small office/home office 1513SOL serial over LAN 1514SOM system on module 1515SP service pack 1516SP stack pointer 1517SPA storage pool allocator 1518SPAN switched port analyzer 1519SPARC scalable processor architecture 1520SPARQL SPARQL Protocol and RDF Query Language 1521SPD security policy database 1522SPD serial presence detect 1523SPDIF Sony/Philips digital interface format 1524SPI serial peripheral interface 1525SPI stateful packet inspection 1526SPL system interrupt priority level 1527SPL spinlock 1528SPMD single process, multiple data 1529SPR special purpose register 1530SPT sectors per track 1531SQA software quality assurance 1532SQCIF sub quarter common intermediate format 1533SQL Structured Query Language 1534SRAM static random access memory 1535SRC sample rate conversion 1536SRP SCSI RDMA protocol 1537SRR shaped round robin 1538SS self-snoop 1539SS stack segment 1540SSA static single assignment 1541SSAP source service access point 1542SSB single-sideband modulation 1543SSC spread spectrum clock 1544SSD solid state drive 1545SSE streaming SIMD extensions 1546SSFDC solid state floppy disc card 1547SSH secure shell 1548SSI server side includes 1549SSID service set identifier 1550SSTP secure socket tunneling protocol 1551SSL secure sockets layer 1552SSP stack smashing protection 1553STC software thermal control 1554STD state transition diagram 1555STM software transactional memory 1556STOMP Streaming Text Oriented Messaging Protocol 1557STP Spanning Tree Protocol 1558STP shielded twisted pair 1559STRG spanning tree root guard 1560SUN Stanford University Network 1561SUS Single Unix Specification 1562SUT system under test 1563SVC switched virtual circuit 1564SVG scalable vector graphics 1565SVGA Super Video Graphics Array 1566SVI {switch,switched} virtual interface 1567SVM secure virtual machine 1568SVM support vector machine 1569SVR System V Release 1570SVS Separate Virtual Space 1571SWF Shockwave Flash 1572SWIG simplified wrapper [and] interface generator 1573SYR symbol timing recovery 1574TA test assertion 1575TA transmitter address 1576TACACS terminal access controller access-control system 1577TAI international atomic time 1578TAO track at once 1579TAOCP The Art of Computer Programming 1580TAP Test Anything Protocol 1581TAS test and set 1582TB terabyte 1583TBNF transitional backus-naur form 1584TCB trace capture buffer 1585TCB trusted computing base 1586TCC thermal control circuit 1587TCL tool command language 1588TCP Transmission Control Protocol 1589TCQ tagged command queueing 1590TDC time [to] digital converter 1591TDD test-driven development 1592TDD time division duplex 1593TDM time division multiplexing 1594TDMA time division multiple access 1595TDOA time difference of arrival 1596TDP thermal design {point,power} 1597TDR time-domain reflectometry 1598TECO Text Editor and Corrector 1599TFT thin film transistor 1600TFTP Trivial File Transfer Protocol 1601TIAS try it and see 1602TIFF tagged image file format 1603TITS try it to see 1604TK temporal key 1605TKIP Temporal Key Integrity Protocol 1606TLA top level aggregator 1607TLB translation lookaside buffer 1608TLD top level domain 1609TLER time-limited error recovery 1610TLI transport layer interface 1611TLS thread local storage 1612TLS transport layer security 1613TM Turing machine 1614TM thermal monitor 1615TMG transmogrifier 1616TMDS transition minimized differential signaling 1617TMO timeout 1618TOD time of day 1619TOS terms of service 1620TOS trusted operating system 1621TOS type of service 1622TP transaction processing 1623TPI tracks per inch 1624TPM transactions per minute 1625TPM trusted platform module 1626TPR task priority register 1627TPS transactions per second 1628TPS transmission parameters signaling 1629TR task register 1630TR token ring 1631TRL timing recovery loop 1632TRNG true random number generator 1633TS terminal services 1634TS time series 1635TS time stamp 1636TS transport stream 1637TSAN Thread Sanitizer 1638TSC time stamp counter 1639TSD time stamp disable 1640TSDB time series database 1641TSL test, set, lock 1642TSO time sharing option 1643TSO Total Store Ordering 1644TSP Time-Stamp Protocol 1645TSP Tunnel Setup Protocol 1646TSP time synchronization protocol 1647TSP traveling salesman problem 1648TSS task state segment 1649TTL time to live 1650TTL transistor-transistor logic 1651TTM translation table maps 1652TTY teletype 1653TUI {terminal,text-based,textual} user interface 1654TX {transmit out,transmitter} 1655TXG transaction group 1656TZ time zone 1657UAC user {access,account} control 1658UAF use-after-free 1659UART universal asynchronous receiver/transmitter 1660UAT user acceptance testing 1661UB undefined behavior 1662UBSAN Undefined Behavior Sanitizer 1663UC uncacheable 1664UCS uniform-cost search 1665UCS unified computing system 1666UCS universal coded character set 1667UDI uniform driver interface 1668UDMA ultra DMA 1669UDO ultra density optical 1670UDP User Datagram Protocol 1671UEFI unified extensible firmware interface 1672UFS Unix File System 1673UGA universal graphics adapter 1674UI unit interval 1675UI user interface 1676UICC universal integrated circuit card 1677UID unique identifier 1678UID user identifier 1679UL upload 1680UMA uniform memory access 1681UMA upper memory area 1682UMB upper memory block 1683UML unified modeling language 1684UMPC ultra-mobile PC 1685UPNP universal plug and play 1686UPS uninterruptible power supply 1687URI uniform resource identifier 1688URL uniform resource locator 1689URN uniform resource name 1690USART universal synchronous/asynchronous receiver/transmitter 1691USB universal serial bus 1692USWC uncacheable speculative write combining 1693UT unit test 1694UTC coordinated universal time 1695UTF unicode transformation formats 1696UTP unshielded twisted pair 1697UTS UNIX time-sharing 1698UUCP Unix-to-Unix Copy Protocol 1699UUID universally unique identifier 1700UUOC useless use of cat 1701UUT unit under test 1702UX user experience 1703VA vertical alignment 1704VA virtual address 1705VA volt-ampere 1706VAX virtual address extension 1707VB Visual Basic 1708VCA variable-gain amplifier 1709VCC common collector voltage 1710VCCP virtual chassis control protocol 1711VCF voltage-controlled filter 1712VCM virtual channel memory 1713VCO voltage-controlled oscillator 1714VCP virtual chassis port 1715VCS version control system 1716VDPAU Video Decode and Presentation API for Unix 1717VES virtual execution system 1718VESA Video Electronics Standards Association 1719VFO variable-frequency oscillator 1720VFS virtual file system 1721VG volume group 1722VGA Video Graphics Array 1723VHDCI very high density cable interconnect 1724VID {VLAN,voltage level} identifier 1725VIM Vi IMproved 1726VIPT virtually indexed, physically tagged 1727VIVT virtually indexed, virtually tagged 1728VLAN virtual local area network 1729VLD variable-length decoding 1730VLIW very long instruction word 1731VLSI very large scale integration 1732VLSM variable length subnet mask 1733VM virtual {machine,memory} 1734VME virtual mode extension 1735VMX vector multimedia extensions 1736VMX virtual machine extensions 1737VNC virtual network computing 1738VOD video on demand 1739VPD vital product data 1740VPN virtual private network 1741VPWS virtual private wire service 1742VR virtual reality 1743VRAM video random access memory 1744VRF virtual routing and forwarding 1745VRM voltage regulator module 1746VROC Virtual RAID On CPU 1747VRRP Virtual Router Redundancy Protocol 1748VSTP VLAN Spanning Tree Protocol 1749VTP VLAN Trunking Protocol 1750VXFS Veritas file system 1751VXVM Veritas volume manager 1752W watt 1753W3C World Wide Web Consortium 1754WAFL write anywhere file layout 1755WAMP Web Application Messaging Protocol 1756WAN wide area network 1757WAP Wireless Application Protocol 1758WAP wireless access point 1759WDM Windows Driver Model 1760WDDM Windows Display Driver Model 1761WDT watchdog timer 1762WEP Wired Equivalent Privacy 1763WFI wait for interrupt 1764WFQ weighted fair queuing 1765WH write hit 1766WHEA Windows hardware error architecture 1767WIFI wireless fidelity 1768WLAN wireless local area network 1769WM write miss 1770WMF Windows meta file 1771WMI Windows Management Instrumentation 1772WOL Wake-on-LAN 1773WOM Wake-on-Modem 1774WOR Wake-on-Ring 1775WORM write once read many 1776WP WordPerfect 1777WP word processor 1778WP write protect 1779WPA Wi-Fi Protected Access 1780WPA2 Wi-Fi Protected Access II 1781WPAD web proxy auto-discovery protocol 1782WPS Wi-Fi Protected Setup 1783WRAM window random access memory 1784WS web services 1785WTC write through caching 1786WTD weighted tail drop 1787WWAN wireless wide area network 1788WWW world wide web 1789WYSIAYG what you see is all you get 1790WYSIWYG what you see is what you get 1791XBAR crossbar 1792XDMCP X Display Manager control protocol 1793XER XML encoding rules 1794XGA Extended Graphics Array 1795XHR XMLHttpRequest 1796XIP execute in place 1797XML Extensible Markup Language 1798XNA XNA's not acronymed 1799XNS Xerox network systems 1800XOR exclusive or 1801XP extreme programming 1802XSI X/Open System Interface 1803XSL extensible stylesheet language 1804XSLT extensible stylesheet language transformations 1805XSS cross site scripting 1806XT extended technology 1807XTACACS extended terminal access controller access-control system 1808XTI X/Open transport interface 1809XUL XML user interface language 1810YACC yet another compiler compiler 1811YAML YAML ain't markup language 1812YANG yet another next generation 1813YAWPFAPR you are welcome; please file a problem report 1814YP Yellow Pages 1815YTD year to date 1816ZAP ZFS attribute processor 1817ZBR zone bit recording 1818ZFOD zero-filled on demand 1819ZFS zettabyte file system 1820ZIF zero insertion force 1821ZIFS zero insertion force socket 1822ZIL ZFS intent log 1823ZMA zone multicast address 1824ZOI zero one infinity 1825ZOI zone of influence 1826ZPL ZFS Posix layer 1827ZVOL ZFS Volume 1828