acronyms.comp revision 1.301
1$NetBSD: acronyms.comp,v 1.301 2020/04/27 09:10:45 plunky 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 158BMIC bus master interface controller 159BN boundary neutral 160BNF Backus-Naur form 161BO binary output 162BOF beginning of file 163BOM beginning of message 164BOM byte order mark 165BP base pointer 166BP boot processor 167BPB BIOS parameter block 168BPDU bridge protocol data unit 169BPF Berkeley Packet Filter 170BPI bits per inch 171BPM business process modelling 172BPS bits per second 173BPSK binary phase shift keying 174BQS Berkeley quality software 175BRE basic regular expression 176BS backspace 177BS binary sequence 178BSA basic service area 179BSD Berkeley Software Distribution 180BSDP Boot Service Discovery Protocol 181BSF bit scan forward 182BSOD blue screen of death 183BSP binary space partition 184BSP board support package 185BSP bootstrap processor 186BSR bit scan reverse 187BSS basic service set 188BSS block started by symbol 189BSSID basic service set identifier 190BT BitTorrent 191BT Bluetooth 192BT bit test 193BTC bit test [and] complement 194BTM bus transport mechanism 195BTR bit test [and] reset 196BTS bit test [and] set 197BTS bug tracking system 198BW bandwidth 199BWM block-write mode 200BUAG big ugly ASCII graphic 201CA certificate authority 202CACLS change access control lists 203CAD computer-aided design 204CAM computer assisted manufacturing 205CAM conditional access module 206CAM content addressable memory 207CARP Common Address Redundancy Protocol 208CAS column address strobe 209CAS compare and swap 210CAS computer algebra system 211CASE computer aided software engineering 212CAU control access unit 213CAV constant angular velocity 214CBC cipher block chaining 215CBR constant bit rate 216CC carbon copy 217CCC Chaos Computer Club 218CCD charge coupled device 219CCI co-channel interferer 220CCNUMA cache-coherent non-uniform memory access 221CCTL command completion time limit 222CD cache disable 223CD compact disc 224CDDA compact disc digital audio 225CDL compiler description language 226CDMA code division multiple access 227CDP Cisco Discovery Protocol 228CDRAM cache dynamic random access memory 229CER canonical encoding rules 230CE customer edge 231CF compact flash 232CFB cipher feedback 233CFG context-free grammar 234CFG control-flow graph 235CFI control-flow integrity sanitizer 236CG control gate 237CGA Color Graphics Adapter 238CGI common gateway interface 239CGN Carrier-Grade NAT 240CHAP Challenge-Handshake Authentication Protocol 241CHFS chip file system 242CHS cylinder/head/sector 243CI continuous integration 244CI {common,component} interface 245CIA confidentiality, integrity, availability 246CIDR Classless Inter-Domain Routing 247CIF common intermediate format 248CIFS Common Internet File System 249CIL common intermediate language 250CIR carrier-to-interference ratio 251CIS contact image sensor 252CISC complex instruction set {computer,computing} 253CJK Chinese, Japanese, [and] Korean 254CLF common log format 255CLI command line interface 256CLI common language infrastructure 257CLR common language runtime 258CLS common language specification 259CLTT closed loop thermal throttling 260CLUT color look-up table 261CLV constant linear velocity 262CM configuration management 263CMA concert multithread architecture 264CMC chassis management controller 265CMC corrected machine check 266CMS {configuration,content,course} management system 267CMI control {management,method} interface 268CMOS complementary metal-oxide-semiconductor 269CMP chip multi-processing 270CMS content management system 271CMYK cyan magenta yellow black 272CN {common,canonical} name 273CNC computer numerical control 274CNR carrier-to-noise ratio 275COA change of authority 276COF current operating frequency 277COFDM coded orthogonal frequency division multiplexing 278COFF common object file format 279COM component object model 280COM computer on module 281COMA cache-only memory architecture 282CORBA common object request broker architecture 283COS class of service 284COW copy-on-write 285CP continuous pilot 286CPA chosen-plaintext attack 287CPB core performance boost 288CPC central processor complex 289CPC cpu performance counters 290CPE common phase error 291CPE common platform enumeration 292CPER common platform error record 293CPG clock pulse generator 294CPI cycles per instruction 295CPL current privilege level 296CPLD complex programmable logic device 297CPP C preprocessor 298CPS characters per second 299CPS continuation-passing style 300CPT command pass through 301CPU central processing unit 302CR carriage return 303CRC cyclic redundancy check 304CRL carrier recovery loop 305CRLF carriage return line feed 306CSU C start up 307CRT cathode ray tube 308CRUD create, read, update, and delete 309CS cable select 310CS chip select 311CS code segment 312CS computer science 313CSDL {common,conceptual} schema definition language 314CSI channel state information 315CSI common system interface 316CSMA carrier sense multiple access 317CSMA/CA carrier sense multiple access with collision avoidance 318CSMA/CD carrier sense multiple access with collision detection 319CSP communicating sequential processes 320CSP content security policy 321CSP constrain satisfaction problems 322CSP cryptographic service provider 323CSR control [and] status registers 324CSRG Computer Systems Research Group 325CSS cascading style sheets 326CST common spanning tree 327CSV comma-separated values 328CTF compact c type format 329CTM close to metal 330CTR counter [mode] 331CTS clear to send 332CTS common type system 333CUA common user access 334CUT coordinated universal time 335CV control voltage 336CVE common vulnerabilities and exposures 337CVS Concurrent Versions System 338DA destination address 339DAA distributed application architecture 340DAAP digital audio access protocol 341DAB digital audio broadcasting 342DAC digital [to] analog converter 343DAC discretionary access control 344DAD duplicate address detection 345DANE DNS-based Authentication of Named Entities 346DAO disk at once 347DAP Directory Access Protocol 348DAT digital audio tape 349DAT dynamic acceleration technology 350DB database 351DBA database administrator 352DBA dynamic bandwidth allocation 353DBB data bus buffer 354DBC design by contract 355DBL dynamic buffer limiting 356DBMS database management system 357DBS database server 358DC direct current 359DCC Direct Client-to-Client 360DCC direct cable connect 361DCD data carrier detect 362DCE data control equipment 363DCE distributed computing environment 364DCIM data center infrastructure management 365DCIM digital camera images 366DCL Digital Command Language 367DCOM distributed component object model 368DCOP Desktop COmmunication Protocol 369DCS data collection systems 370DCT discrete cosine transform 371DCU data cache unit 372DDC display data channel 373DDE dynamic data exchange 374DDI device drivers interface 375DDK device driver kit 376DDL data description language 377DDR double data rate 378DDS direct digital sound 379DDWG Digital Display Working Group 380DE debugging extensions 381DE desktop environment 382DEA data encryption algorithm 383DEC Digital Equipment Corporation 384DEK data encryption key 385DEP data execution prevention 386DER distinguished encoding rules 387DES Data Encryption Standard 388DF don't fragment 389DFA deterministic finite automaton 390DFC data flow control 391DFS depth first search 392DFS distributed file system 393DFSAN Data Flow Sanitizer 394DFT diagnostic function test 395DFT discrete Fourier transform 396DGL data generation language 397DH Diffie-Hellman 398DHCP Dynamic Host Configuration Protocol 399DIA dedicated Internet access 400DIFS distributed inter-frame space 401DIMM dual inline memory module 402DIRT design in real time 403DKI driver/kernel interface 404DL diode logic 405DL discrete logarithm 406DL download 407DLCI data link connection identifier 408DLE data link escape 409DLL dynamic link library 410DLNA digital living network alliance 411DLP discrete logarithm problem 412DMA direct memory access 413DMI desktop management interface 414DMS document management system 415DMT discrete multitone modulation 416DMU data management layer 417DNARD Digital network appliance reference design 418DND drag and drop 419DNLC directory name lookup cache 420DNS Domain Name System 421DNSSEC DNS Security Extensions 422DOE distributed object environment 423DOF data over fibre 424DOM document object model 425DOS denial of service 426DOS disk operating system 427DP DisplayPort 428DPC deferred procedure call 429DPCM differential pulse code modulation 430DPD dead peer detection 431DPI deep packet inspection 432DPI dots per inch 433DPL descriptor privilege level 434DPS Display PostScript 435DPST display power savings technology 436DRAAS disaster recovery as a service 437DRAM dynamic random access memory 438DRBG deterministic random bit generator 439DRI direct rendering infrastructure 440DRM digital rights management 441DRRS display refresh rate switching 442DS debug store 443DS differentiated services 444DSA digital signature algorithm 445DSAP destination service access point 446DSB double-sideband modulation 447DSCP differentiated services code point 448DSDT differentiated system descriptor table 449DSF device special file 450DSL dataset and snapshot layer 451DSL digital subscriber line 452DSL domain specific language 453DSLAM digital subscriber line access multiplexer 454DSN delivery status notification 455DSO dynamic shared object 456DSP digital signal processor 457DSSS direct sequence spread spectrum 458DTB device tree blob 459DTC device tree compiler 460DTD document type definition 461DTE data terminal equipment 462DTE dumb terminal emulator 463DTL diode-transistor logic 464DTLS datagram transport layer security 465DTS device tree source 466DTS digital thermal sensor 467DUT device under test 468DVB digital video broadcasting 469DVCS distributed version control system 470DVD digital versatile disc 471DVFS dynamic voltage and frequency scaling 472DVI device independent 473DVI Digital Visual Interface 474DVR digital video recorder 475E-XER extended XML encoding rules 476EABI embedded-application binary interface 477EAI Email Address Internationalization 478EAI Enterprise Application Integration 479EAP Extensible Authentication Protocol 480EAPOL EAP over Lan 481EAV entity-attribute-value model 482EAV ethernet audio/video bridging 483EBCDIC Extended Binary Coded Decimal Interchange Code 484EBDA Extended BIOS Data Area 485EBNF extended backus-naur form 486EBR extended boot record 487EC elliptic curve 488ECC elliptic curve cryptography 489ECC error correction code 490ECDH elliptic curve Diffie-Hellman 491ECDL elliptic curve discrete logarithm 492ECDLP elliptic curve discrete logarithm problem 493ECDSA elliptic curve digital signature algorithm 494ECL emitter-coupled logic 495ECN explicit congestion notification 496ECP enhanced capability port 497ECS enhanced chip set 498ECS extended configuration space 499EDAC error detection and correction 500EDAT enhanced dynamic acceleration technology 501EdDSA Edwards curve digital signature algorithm 502EDGE explicit data graph execution 503EDID extended display identification data 504EDO extended data out 505EDS electronical data sheet 506EDSAC electronic delay storage automatic calculator 507EDVAC electronic discrete variable automatic computer 508EEE energy efficient ethernet 509EEPROM electrically erasable programmable read only memory 510EFI extensible firmware interface 511EFL emitter follower logic 512EFM eight to fourteen modulation 513EFS extent file system 514EGA Enhanced Graphics Adapter 515EGP exterior gateway protocol 516EH extension header 517EIDE enhanced IDE 518EISA extended industry standard architecture 519EINJ error injection table 520ELF executable and linking format 521ELS entry level system 522EMI electro-magnetic interference 523EMP electro-magnetic pulse 524EMR electro-magnetic radiation 525EMACS Editor MACroS 526ENIAC electronic numerical integrator and computer 527EOF end of file 528EOI end of interrupt 529EOIS end of interactive support 530EOL end of life 531EOL end of line 532EOT end of transmission 533EPIC explicitly parallel instruction computing 534EPP enhanced parallel port 535EPRML extended partial response, maximum likelihood 536EPROM erasable programmable read only memory 537EPT extended page tables 538ERC error recovery control 539ERD emergency recovery disk 540ERD entity relationship diagram 541ERE extended regular expression 542ERST error record serialization table 543ESAN Efficiency Sanitizer 544ESB enterprise service bus 545ESDI enhanced small disk interface 546ESDRAM enhanced synchronous dynamic random access memory 547ESI enclosure services interface 548ESS electronic switching system 549ESS extended service set 550ESSID extended service set identifier 551EST enhanced speedstep 552ETL extract, transform, load 553EU execution unit 554EULA end user license agreement 555FAT file allocation table 556FBRAM frame buffer random access memory 557FCIF full common intermediate format 558FCL fiber channel loop 559FCS frame check sequence 560FDC floppy disk controller 561FDD floppy disk drive 562FDDI fiber distributed data interface 563FDE full disk encryption 564FDT flattened device tree 565FEA finite element analysis 566FEC forward error correction 567FET field-effect transistor 568FF finite field 569FF form feed 570FFDH finite-field Diffie-Hellman 571FFH functional fixed hardware 572FFI foreign function interface 573FFM focus follows mouse 574FFS Fast File System 575FFS find first set 576FFT fast Fourier transform 577FG floating gate 578FHSS frequency hop spread spectrum 579FID frequency identifier 580FIFO first in, first out 581FILO first in, last out 582FIPS Federal Information Processing Standards 583FIR fast infrared 584FLOPS floating [point] operations per second 585FLOSS free/libre/open source software 586FM frequency modulation 587FMR false match rate 588FOSS free/open source software 589FPGA field programmable gate array 590FPM fast page mode 591FPR floating point register 592FPU floating point unit 593FQDN fully qualified domain name 594FRR false rejection rate 595FRU field replaceable unit 596FS file system 597FSB front side bus 598FSCK file system check 599FSF Free Software Foundation 600FSK frequency shift keying 601FSM finite-state machine 602FTA fault tree analysis 603FTL flash translation layer 604FTP File Transfer Protocol 605FTPS File Transfer Protocol Secure 606FUS fast user switching 607FWH firmware hub 608FWS folding white space 609GAL generic array logic 610GARP generic attribute registration protocol 611GAS generic address structure 612GC garbage collector 613GCM Galois counter mode 614GCR group-coded recording 615GDI Graphics Device Interface 616GDT global descriptor table 617GECOS general comprehensive operating supervisor 618GEM graphics environment manager 619GEM graphics execution manager 620GENA general event notification architecture 621GHC Glasgow Haskell compiler 622GHES generic hardware error source 623GIC generic interrupt controller 624GID group identifier 625GIF graphics interchange format 626GMCH graphics and memory controller hub 627GNU GNU's Not Unix 628GOP graphics output protocol 629GOT global offset table 630GPE general purpose event 631GPF general protection fault 632GPG GNU Privacy Guard 633GPL [GNU] General Public License 634GPR general purpose register 635GPS generalized processor sharing 636GPT GUID partition table 637GPU graphics processing unit 638GR golden ratio 639GRE generic routing encapsulation 640GSI global system interrupt 641GUI graphical user interface 642GUID globally unique identifier 643GVFS git virtual file system 644HA high availability 645HAL hardware abstraction layer 646HAT hashed array tree 647HATEOAS hypermedia as the engine of application state 648HBA host bus adapter 649HCF halt and catch fire 650HCI host controller interface 651HCI human-computer interaction 652HCL hardware compatibility list 653HDCP High-bandwidth Digital Content Protection 654HDD hard disk drive 655HDL hardware description language 656HDMI High-Definition Multimedia Interface 657HDTV high-definition television 658HECI host embedded controller interface 659HEST hardware error source table 660HEVC high efficiency video coding 661HF high frequency 662HFM highest frequency mode 663HFS hierarchical file system 664HID human interface device 665HKP HTTP Keyserver Protocol 666HLL high-level language 667HMA high memory area 668HMI human-machine interface 669HOOD hierarchical object oriented design 670HP Hewlett-Packard 671HPC high performance computing 672HPD hot plug detection 673HPET high precision event timer 674HSM hardware security module 675HSM hierarchical storage management 676HT hyper-threading 677HTC hardware thermal control 678HTCC high temperature co-fired ceramic 679HTML HyperText Markup Language 680HTT hyper-threading technology 681HTTP Hypertext Transfer Protocol 682HTTPS Hypertext Transfer Protocol Secure 683HVM hardware virtual machine 684HVDS High-Voltage Differential Signaling 685HWASAN Hardware-assisted Address Sanitizer 686HZ Hertz 687I2O intelligent input/output 688IA information assurance 689IAAS infrastructure as a service 690IANA Internet Assigned Numbers Authority 691IBC iterated block cipher 692IBM International Business Machines 693IBPI international blinking pattern interpretation 694IBS instruction based sampling 695IBSS independent basic service set 696IC integrated circuit 697ICA independent computer architecture 698ICACLS integrity control access control lists 699ICB Internet Citizen's Band 700ICE in-circuit emulator 701ICE internal compiler error 702ICH I/O controller hub 703ICMP Internet Control Message Protocol 704ICT information and communications technology 705ICW initialization command word 706IDA Intel dynamic acceleration 707IDCMP Intuition direct communication message port 708IDCT inverse discrete cosine transform 709IDE integrated development environment 710IDE integrated drive electronics 711IDPS intrusion detection [and] prevention system 712IDRP inter-domain routing protocol 713IDS intrusion detection system 714IDT interrupt descriptor table 715IE Internet Explorer 716IEC International Electrotechnical Commission 717IEEE Institute of Electrical and Electronics Engineers 718IESG Internet Engineering Steering Group 719IETF Internet Engineering Task Force 720IF intermediate frequency 721IFCM isochronous flow control mode 722IFF Interchange File Format 723IFS internal field separator 724IGD Internet gateway device 725IGMP Internet Group Management Protocol 726IGP interior gateway protocol 727IHV independent hardware vendor 728IKE Internet key exchange 729ILM internal loopback mode 730ILOM integrated lights-out management 731ILP instruction level parallelism 732IM instant messaging 733IMAP Internet Message Access Protocol 734IMC integrated memory controller 735IMCR interrupt mode configuration register 736IMR interrupt mask register 737IMS information management system 738IMSI international mobile subscriber identity 739INCITS InterNational Committee for Information Technology Standards 740INODE index node 741IO input/output 742IOCTL input/output control 743IOM input/output managers 744IOMMU input/output memory management unit 745IOT Internet of Things 746IP Internet Protocol 747IP intellectual property 748IPC instructions per cycle 749IPC interprocess communication 750IPCF interprocess communication facility 751IPE integrated programming environment 752IPI intelligent peripheral interface 753IPI interprocessor interrupt 754IPL Initial Program Load 755IPL Interrupt Priority Level 756IPMB Intelligent Platform Management Bus 757IPMI Intelligent Platform Management Interface 758IPNG Internet Protocol, Next Generation 759IPS in-plane switching 760IPS intrusion prevention system 761IPSEC Internet Protocol Security 762IRC Internet Relay Chat 763IRDA infrared data association 764IRDP ICMP Router Discovery Protocol 765IRQ interrupt request 766IRQL interrupt request level 767IRR interrupt request register 768IRTF Internet Research Task Force 769IS information system 770ISA industry standard architecture 771ISA instruction set architecture 772ISE instant secure erase 773ISDN integrated services digital network 774ISI inter-symbol interference 775ISL initial system load 776ISM industrial, scientific, [and] medical 777ISMS information system management system 778ISN initial serial number 779ISO International Standards Organization 780ISOC Internet Society 781ISP Internet service provider 782ISR in-service register 783ISR interrupt service routine 784IST internal spanning tree 785IST interrupt stack table 786ISV independent software vendor 787IT information technology 788ITB Intel Turbo Boost 789ITIL information technology infrastructure library 790ITP in-target probe 791ITSM IT service management 792IV initialization vector 793IVT interrupt vector table 794JBOD just a bunch of disks 795JCL Job Control Language 796JFET junction [gate] field-effect transistor 797JIT just in time 798JPEG Joint Photographic Experts Group 799JRE Java Runtime Environment 800JSON JavaScript Object Notation 801JTAG joint test action group 802KASLR kernel address space layout randomization 803KB keyboard 804KB kilobyte 805KBD keyboard 806KBD kilobaud 807KCS keyboard controller style 808KLOC thousand lines of code 809KMS kernel-mode setting 810KPI kernel programming interface 811KVA kernel virtual address 812KVM kernel virtual machine 813KVM kernel virtual memory 814KVM keyboard, video, [and] mouse 815L2CAP link layer control and adaptation protocol 816LAG link aggregation group 817LAMP Linux Apache MySQL {Perl,PHP,Python} 818LAN local area network 819LAPIC local advanced programmable interrupt controller 820LAR load access rights 821LBA logical block addressing 822LBNF labeled backus-naur form 823LBS location-based service 824LCD liquid crystal display 825LCP link control protocol 826LDA local delivery agent 827LDAP Lightweight Directory Access Protocol 828LDR light-dependent resistor 829LDT local descriptor table 830LE logical extent 831LED light emitting diode 832LELL low energy link layer 833LER label edge router 834LF line feed 835LF low frequency 836LFM lowest frequency mode 837LFN long file names 838LFO low-frequency oscillation 839LFS log-structured file system 840LFU least frequently used 841LHP loop heat pipe 842LIF logical interchange format 843LIFO last in, first out 844LILO LInux LOader 845LILO last in, last out 846LINT local interrupt 847LIR local Internet registry 848LISP LISt Processor 849LISP Locator/ID Separation Protocol 850LKM {Linux,loadable} kernel module 851LKML Linux kernel mailing list 852LL load linked 853LL/SC load linked/store conditional 854LLC logical link control 855LLD low-level design 856LLDD low-level design document 857LLDP link layer discovery protocol 858LLF low level format 859LLMNR link-local multicast name resolution 860LLVM Low Level Virtual Machine 861LM long mode 862LMCE local machine check exception 863LMI local management interface 864LMM link management mode 865LMP link management protocol 866LNO loop nest optimization 867LOC lines of code 868LOM lights-out management 869LPE Linux performance events 870LPC low pin count 871LPS local positioning system 872LRC longitudinal redundancy check 873LRM left-to-right mark 874LRO left-to-right override 875LRU least recently used 876LS link state 877LSAN Leak Sanitizer 878LSB Linux standards base 879LSB least significant {bit,byte} 880LSI large scale integration 881LSL load segment limit 882LSM log structured merge 883LSN Large Scale NAT 884LSN log sequence number 885LSR label switch router 886LTCC low temperature co-fired ceramic 887LTO linear tape-open 888LTO link time optimization 889LTR left to right 890LTR load task register 891LTR letter(-sized paper) 892LTS long term support 893LUA Lua Uppercase Accident 894LUN logical unit number 895LV logical volume 896LVM logical volume management 897LVT local vector table 898LVDS Low-Voltage Differential Signaling 899LWP light-weight process 900LZSS Lempel Ziv Storer Szymanski 901LZW Lempel Ziv Welch 902MAB MAC authentication bypass 903MAC mandatory access control 904MAC {media,medium} access control 905MAC message authentication {check,code} 906MADT multiple APIC descriptor table 907MAMR microwave-assisted magnetic recording 908MB megabyte 909MBA multi-boot agent 910MBR master boot record 911MBS megabits per second 912MC memory controller 913MCA machine check architecture 914MCA MicroChannel architecture 915MCC multiversion concurrency control 916MCE machine check exception 917MCGA Multi-Color Graphics Array 918MCH memory controller hub 919MCLAG multi-chassis link aggregation group 920MCM multi-chip module 921MCQ memory controlled queue 922MD machine-dependent 923MD-SAL model-driven service abstraction layer 924MDA mail delivery agent 925MDA Monochrome Display Adapter 926MDC Management Data Clock 927MDI Medium Dependent Interface 928MDI-X Medium Dependent Interface Crossover 929MDIO Management Data Input/Output 930MDMX MIPS Digital Media eXtension 931MDRAM multibank dynamic random access memory 932MESI modified, exclusive, shared, invalid 933MFC merge from current 934MFC Microsoft Foundation Classes 935MFM modified frequency modulation 936MFU most frequently used 937MGCP media gateway control protocol 938MHU message handling unit 939MI machine-independent 940MI machine interface 941MIB management information base 942MIC message integrity {check,code} 943MID mobile Internet device 944MIDI musical instrument digital interface 945MIF management information format 946MII media independent interface 947MIM man in the middle 948MIMD multiple instruction, multiple data 949MIME Multipurpose Internet Mail Extensions 950MIMO multiple input multiple output 951MIPS million instructions per second 952MIPS Microprocessor without Interlocked Pipeline Stages 953MISD multiple instruction, single data 954MIT Massachusetts Institute of Technology 955MITM man in the middle 956ML machine language 957ML machine learning 958ML mailing list 959ML markup language 960ML maximum likelihood 961MLAG multi-chassis link aggregation group 962MLC multi-level cell 963MLD multicast listener discovery 964MLHP micro loop heat pipe 965MMF multi-mode fiber 966MMIC monolithic microwave integrated circuit 967MMIO memory mapped input/output 968MMORPG massive multiplayer online role playing game 969MMRP multiple MAC registration protocol 970MMU memory management unit 971MMX matrix math extension 972MMX multimedia extension 973MMX multiple math extension 974MO magneto-optical 975MOESI modified, owned, exclusive, shared, invalid 976MOF maximum operating frequency 977MOSFET metal-oxide-semiconductor field-effect transistor 978MOSI modified, owned, shared, invalid 979MP multi-platform 980MP multiplayer 981MP {multiprocessing,multiprocessor} 982MPEG moving picture experts group 983MPI message passing interface 984MPLS Multiprotocol Label Switching 985MPP massively parallel processor 986MPS memory pool system 987MPS multiprocessor specification 988MQTT Message Queuing Telemetry Transport 989MR modem ready 990MRO method resolution order 991MRP multiple registration protocol 992MRU most recently used 993MS Microsoft 994MSAN Memory Sanitizer 995MSB most significant {bit,byte} 996MSC message sequence chart 997MSE mean square error 998MSF minutes seconds frames 999MSI message signaled interrupt 1000MSI modified, shared, invalid 1001MSR {machine state,model-specific} register 1002MSS maximum segment size 1003MSTP Multiple Spanning Tree Protocol 1004MT machine translation 1005MTA mail transfer agent 1006MTBF mean time between failures 1007MTP media transfer protocol 1008MTRR memory type range register 1009MTTF mean time to failure 1010MTU maximum transmission unit 1011MUA mail user agent 1012MUD multi-user domain 1013MVCC multiversion concurrency control 1014MVR multicast VLAN registration 1015MVRP multiple VLAN registration protocol 1016MWE module width encoding 1017MX mail exchange 1018NACK negative acknowledgement 1019NAK negative acknowledgement 1020NAN neighbor awareness networking 1021NAN not a number 1022NAPT Network Address Port Translation 1023NAS network attached storage 1024NAT network address translation 1025NAV network allocation vector 1026NC numerical control 1027NC-SI network controller sideband interface 1028NCO numerically-controlled oscillator 1029NCP Network Control Protocol 1030NCSI network connectivity status indicator 1031NCQ native command queuing 1032ND neighbor discovery 1033NDFA nondeterministic finite automaton 1034NDIS network driver interface specification 1035NE numeric error 1036NEWS Network extensible Window System 1037NFA nondeterministic finite automaton 1038NFC near-field communication 1039NFCI no functional change intended 1040NFS network file system 1041NFV network function virtualization 1042NIA next instruction address 1043NIC network information center 1044NIC network interface card 1045NIDS network intrusion detection system 1046NIP network interface protocol 1047NIPS network intrusion prevention system 1048NIS network information service 1049NIST National Institute of Standards and Technology 1050NLS native language support 1051NMI non-maskable interrupt 1052NNTP Network News Transfer Protocol 1053NOC network operations center 1054NOP no operation 1055NOS network operating system 1056NP nondeterministic polynomial time 1057NRND not recommended for new designs 1058NRZ non-return to zero 1059NSA nation-state adversary 1060NSA no such agency 1061NSA National Security Agency 1062NTM non-deterministic Turing machine 1063NTP Network Time Protocol 1064NUMA non-uniform memory access 1065NURBS non-uniform rational basis spline 1066NVMM NetBSD Virtual Machine Monitor 1067NVMM non-volatile main memory 1068NVRAM non-volatile random access memory 1069NW not write-through 1070NX no execute 1071OAEP optimal asymmetric encryption padding 1072OAM operations, administration, and {management,maintenance} 1073OBO off by one 1074OBOE off by one error 1075OCL object constraint language 1076OCR optical character recognition 1077ODE offline device environment 1078ODI open data-link interface 1079ODM object data manager 1080ODCM on-demand clock modulation 1081ODT on-die termination 1082OEM original equipment manufacturer 1083OFB output feedback 1084OFDM orthogonal frequency division multiplexing 1085OFET organic field-effect transistor 1086OLAP online analytical processing 1087OLE object linking and embedding 1088OLTP online transaction processing 1089ONFI open nand flash interface 1090OO OpenOffice 1091OO object oriented 1092OOB out of band 1093OOE out of order execution 1094OOM out of memory 1095OOO OpenOffice.org 1096OOP object oriented programming 1097OOPS object oriented programming systems 1098OOSE object oriented software engineering 1099OPM operations per minute 1100OPS operations per second 1101OQL Object Query Language 1102ORB object request broker 1103ORM object-relational mapping 1104OS operating system 1105OSD object-based storage device 1106OSD open source definition 1107OSF open software foundation 1108OSI Open Source Initiative 1109OSI open systems interconnection 1110OSPF open shortest path first 1111OSPM OS power management 1112OSS open sound system 1113OSS open source software 1114OSVW operating system visible workarounds 1115OTP one time password 1116OTP open telecom platform 1117OU organizational unit 1118OUI organizationally unique identifier 1119OWL Web Ontology Language 1120P2P PCI to PCI 1121P2P peer to peer 1122PA phase accumulator 1123PA physical address 1124PAAS platform as a service 1125PAC phase-amplitude converter 1126PAE physical address extension 1127PAGP port aggregation protocol 1128PAL phase alternating line 1129PAL programmable array logic 1130PAM pluggable authentication modules 1131PAM pulse amplitude modulation 1132PAP password authentication protocol 1133PAT page attribute table 1134PAT port address translation 1135PATA parallel ATA 1136PAX portable archive exchange 1137PBE pending break encoding 1138PBE programming by example 1139PC personal computer 1140PC program counter 1141PCB printed circuit board 1142PCB process control block 1143PCB Protocol Control Block 1144PCBC propagating cipher block chaining 1145PCC Portable C Compiler 1146PCD page-level cache disable 1147PCE path computation element 1148PCE performance-monitor counter enable 1149PCEP Path Computation Element Protocol 1150PCH platform controller hub 1151PCI peripheral component interconnect 1152PCM phase change memory 1153PCM pulse code modulation 1154PCMCIA Personal Computer Memory Card International Association 1155PCP Port Control Protocol 1156PD public domain 1157PDA personal digital assistant 1158PDA pushdown automaton 1159PDAG propositional directed acyclic graph 1160PDB power distribution board 1161PDF portable document format 1162PDM pulse-duration modulation 1163PDN pull-down network 1164PDP page {descriptor,directory} page 1165PDS product data sheet 1166PDU protocol data unit 1167PE protection enable 1168PE provider edge 1169PEAP Protected EAP 1170PECI platform environment control interface 1171PEP protocol extension protocol 1172PER packed encoding rules 1173PFS perfect forward secrecy 1174PGAS partitioned global address space 1175PGE page global enable 1176PGP Pretty Good Privacy 1177PHB PCI host bridge 1178PHP PHP: Hypertext Preprocessor 1179PIC performance instrumentation counters 1180PIC position independent code 1181PIC programmable interrupt controller 1182PICNIC problem in chair, not in computer 1183PID process id 1184PIE position independent executable 1185PIL Priority Interrupt Level 1186PIM personal information manager 1187PIM platform-independent model 1188PIO programmed input/output 1189PIPT physically indexed, physically tagged 1190PIQ prefetch input queue 1191PIT programmable interrupt timer 1192PIV personal identity verification 1193PIX Private Internet eXchange 1194PKCS public-key cryptography standards 1195PKI public key infrastructure 1196PLC programmable logic controller 1197PLD programmable logic device 1198PLL phase locked loop 1199PLRU pseudo LRU 1200PLTM package level thermal management 1201PM power management 1202PM {phase,pulse} modulation 1203PMC performance monitoring counters 1204PME power management event 1205PMEG page map entry group 1206PMI performance monitoring infrastructure 1207PMI platform management interrupt 1208PMIC power management integrated circut 1209PMIO port-mapped input/output 1210PMT photo-multiplier tube 1211PMU performance monitoring units 1212PMU power management unit 1213PNG portable network graphics 1214PNP plug and play 1215POE power over ethernet 1216POF probability of failure 1217POP Post Office Protocol 1218POP power on password 1219POR plan of record 1220POSIX Portable Operating System Interface [for Unix] 1221POST power on self test 1222POTS plain old telephone system 1223POWER Performance Optimization With Enhanced RISC 1224POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1225PP pair programming 1226PPB PCI [to] PCI bridge 1227PPC PowerPC 1228PPC Power Performance Computing 1229PPI pixels per inch 1230PPM pages per minute 1231PPP Point-to-Point Protocol 1232PPPOA Point-to-Point Protocol over ATM 1233PPPOE Point-to-Point Protocol over Ethernet 1234PPR processor programming reference 1235PPT powerpoint 1236PPT punched paper tape 1237PPU physics processing unit 1238PRAM Parameter RAM 1239PRBS pseudorandom bit sequence 1240PRG pseudorandom generator 1241PRF pseudorandom function [family] 1242PRML partial response, maximum likelihood 1243PRN pseudorandom {noise,number} 1244PRNG pseudorandom number generator 1245PROM programmable read only memory 1246PRP pseudorandom permutation 1247PRU Programmable Realtime Unit 1248PS PostScript 1249PSD power spectral density 1250PSE page size extensions 1251PSK phase shift keying 1252PSK pre-shared key 1253PSTN public switched telephone network 1254PSW program status word 1255PTE page table entry 1256PTLA pseudo top level aggregator 1257PTP page table page 1258PTV perceived target value 1259PU processing unit 1260PUC personal unblocking code 1261PUN physical unit number 1262PV physical volume 1263PVC permanent virtual circuit 1264PVG physical volume group 1265PVI protected-mode virtual interrupt 1266PVRST Per-VLAN rapid spanning tree 1267PVST Per-VLAN Spanning Tree 1268PWM pulse width modulation 1269PXE preboot execution environment 1270QA quality assurance 1271QAM quadrature amplitude modulation 1272QAM quality assurance management 1273QBE query by example 1274QC quality control 1275QDI quasi delay insensitive 1276QCIF quarter common intermediate format 1277QOS quality of service 1278QVL qualified vendor list 1279R/O read only 1280R/W read/write 1281RA receiver address 1282RA remote assistance 1283RA resource affinity 1284RA router advertisement 1285RAD rapid application development 1286RADIUS remote authentication dial-in user service 1287RAID redundant array of {independent,inexpensive} disks 1288RAM random access memory 1289RAS reliability, availability and serviceability 1290RAS remote access service 1291RAS restartable atomic sequence 1292RAS row address strobe 1293RBF radial basis function 1294RBNF routing backus-naur form 1295RBT red-black tree 1296RC release candidate 1297RC remote control 1298RC run commands 1299RCS Revision Control System 1300RCS revision control system 1301RCU read, copy, update 1302RDB Rigid Disk Block 1303RDBMS relational database management system 1304RDF Resource Description Framework 1305RDM relational data model 1306RDMA remote direct memory access 1307RDP remote desktop protocol 1308RDRAM Rambus DRAM 1309RE regular expression 1310REPL read, evaluate, print, loop 1311REST representational state transfer 1312RF radio frequency 1313RFB remote frame buffer 1314RFI radio frequency interference 1315RFO request for ownership 1316RFU reserved for future use 1317RGB red green blue 1318RGBA red green blue alpha 1319RGMII reduced gigabit media independent interface 1320RH read hit 1321RHEL Red Hat Enterprise Linux 1322RHL Red Hat Linux 1323RIB routing information base 1324RIFF Resource Interchange File Format 1325RIP Raster Image Processor 1326RIP Routing Information Protocol 1327RIR regional Internet registry 1328RISC reduced instruction set {computer,computing} 1329RKM ROM Kernel Manual 1330RLE run length encoding 1331RLL run length limited 1332RLO right-to-left override 1333RM read miss 1334RMCP Remote Management Control Protocol 1335RMI remote method invocation 1336RMO Relaxed Memory Ordering 1337RMPM rapid memory power management 1338RMS root mean square 1339RMW read, modify, write 1340RNG random number generator 1341ROM read only memory 1342RPC remote procedure call 1343RPKI resource PKI 1344RPL requested privilege level 1345RPM revolutions per minute 1346RPN reverse Polish notation 1347RPVST Rapid Per-VLAN Spanning Tree 1348RR random replacement 1349RR round robin 1350RS relay station 1351RSA Rivest, Shamir, [and] Adleman 1352RSIP Realm Specific IP 1353RSN Robust Secure Network 1354RSS really simple syndication 1355RSS residual sum of squares 1356RSTP Rapid Spanning Tree Protocol 1357RT real time 1358RTC real time clock 1359RTC real time computing 1360RTF rich text format 1361RTL register transfer language 1362RTL resistor-transistor logic 1363RTL right to left 1364RTOS real time operating system 1365RTS request to send 1366RTT round trip time 1367RUP rational unified process 1368RW Rabin-Williams 1369RWM read-write memory 1370RX {receive,receiver} 1371S/PDIF Sony/Philips Digital Interface Format 1372SA security advisory 1373SA security association 1374SA source address 1375SA structured analysis 1376SAAS software as a service 1377SABRE Semi-automated business research environment 1378SACD super audio compact disc 1379SAD security association database 1380SAF-TE SCSI accessed fault-tolerant enclosure 1381SAGE Semi-automated ground environment 1382SAL {service,system} abstraction layer 1383SAM serial access memory 1384SAM sum addressed memory 1385SAML security assertion markup language 1386SAN storage area network 1387SAP service access point 1388SAPIC streamlined advanced programmable interrupt controller 1389SASD structured analysis, structured design 1390SASI Shugart Associates System Interface 1391SASL simple authentication [and] security layer 1392SATA serial advanced technology attachment 1393SAX simple API for XML 1394SB sound blaster 1395SBSA server base system architecture 1396SBU standard build unit 1397SC store conditional 1398SCA source code analyzer 1399SCADA supervisory control and data acquisition 1400SCC single chip cloud 1401SCC source code control 1402SCCP skinny call control protocol 1403SCCS Source Code Control System 1404SCI scalable coherent interface 1405SCI system control interrupt 1406SCM software configuration management 1407SCM source code management 1408SCM storage-class memory 1409SCO synchronous connection orientated 1410SCP secure copy 1411SCP system control processor 1412SCPI system control and power interface 1413SCSI Small Computer System Interface 1414SCTP Stream Control Transmission Protocol 1415SDDC software defined data center 1416SDEI software delegated exception interface 1417SDI symbol deinterleave 1418SDK software development kit 1419SDL Simple Declarative Language 1420SDL Simple Direct-media Layer 1421SDLC {software,system,systems} development life cycle 1422SDN software defined networking 1423SDP Session Description Protocol 1424SDR software defined radio 1425SDRAM synchronous dynamic random access memory 1426SDS software defined storage 1427SDT syntax-directed translation 1428SEA synchronous external abort 1429SEGV segmentation violation 1430SED self-encrypting drive 1431SED stream editor 1432SEMB serial ATA enclosure management bridge 1433SEO search engine optimization 1434SES SCSI enclosure services 1435SFC sequential function chart 1436SFI simple firmware interface 1437SFI software fault isolation 1438SFTP SSH File Transfer Protocol 1439SFTP Serial File Transfer Protocol 1440SFTP Simple File Transfer Protocol 1441SGI Silicon Graphics, Inc 1442SGI software generated interrupt 1443SGMII serial gigabit media independent interface 1444SGPIO serial general purpose input/output 1445SGRAM synchronous graphics random access memory 1446SHA secure hash algorithm 1447SICP structure and interpretation of computer programs 1448SIDH supersingular isogeny Diffie-Hellman 1449SIEM security information and event management 1450SIF source input format 1451SIFS short inter-frame space 1452SIM subscriber identity module 1453SIMD single instruction, multiple data 1454SIMM single inline memory module 1455SIP Session Initiation Protocol 1456SIR signal-to-interference ratio 1457SIR slow infrared 1458SISD single instruction, single data 1459SLAAC stateless address auto-configuration 1460SLC single-level cell 1461SLDRAM synchronous-link dynamic random access memory 1462SLED single large expensive disk 1463SLI scalable link interface 1464SLI scan-line interleave 1465SLIC system license internal code 1466SLOC source lines of code 1467SLRU segmented LRU 1468SMA smart memory access 1469SMAF system management action field 1470SMAP Simple Mail Access Protocol 1471SMAP supervisor mode access prevention 1472SMART self-monitoring analysis and reporting technology 1473SMB Server Message Block 1474SMB system management bus 1475SMBIOS System Management BIOS 1476SMC system management controller 1477SMD storage module device 1478SMEP supervisor mode execution protection 1479SMF single mode fiber 1480SMI structure of management information 1481SMI system management interrupt 1482SMM system management mode 1483SMP serial management protocol 1484SMP symmetric multiprocessing 1485SMT simultaneous multithreading 1486SMTP Simple Mail Transfer Protocol 1487SMU system management unit 1488SNA systems network architecture 1489SNAP Sub-Network Access Protocol 1490SNIA Storage Networking Industry Association 1491SNMP Simple Network Management Protocol 1492SNR signal-to-noise ratio 1493SOA service oriented architecture 1494SOAP Simple Object Access Protocol 1495SOC system on chip 1496SOF start of frame 1497SOH start of header 1498SOHO small office/home office 1499SOL serial over LAN 1500SOM system on module 1501SP service pack 1502SP stack pointer 1503SPA storage pool allocator 1504SPAN switched port analyzer 1505SPARC scalable processor architecture 1506SPARQL SPARQL Protocol and RDF Query Language 1507SPD security policy database 1508SPD serial presence detect 1509SPDIF Sony/Philips digital interface format 1510SPI serial peripheral interface 1511SPI stateful packet inspection 1512SPL system interrupt priority level 1513SPL spinlock 1514SPMD single process, multiple data 1515SPR special purpose register 1516SPT sectors per track 1517SQA software quality assurance 1518SQCIF sub quarter common intermediate format 1519SQL Structured Query Language 1520SRAM static random access memory 1521SRC sample rate conversion 1522SRP SCSI RDMA protocol 1523SRR shaped round robin 1524SS self-snoop 1525SS stack segment 1526SSA static single assignment 1527SSAP source service access point 1528SSB single-sideband modulation 1529SSC spread spectrum clock 1530SSD solid state drive 1531SSE streaming SIMD extensions 1532SSFDC solid state floppy disc card 1533SSH secure shell 1534SSI server side includes 1535SSID service set identifier 1536SSTP secure socket tunneling protocol 1537SSL secure sockets layer 1538SSP stack smashing protection 1539STC software thermal control 1540STD state transition diagram 1541STM software transactional memory 1542STOMP Streaming Text Oriented Messaging Protocol 1543STP Spanning Tree Protocol 1544STP shielded twisted pair 1545STRG spanning tree root guard 1546SUN Stanford University Network 1547SUS Single Unix Specification 1548SUT system under test 1549SVC switched virtual circuit 1550SVG scalable vector graphics 1551SVGA Super Video Graphics Array 1552SVI {switch,switched} virtual interface 1553SVM secure virtual machine 1554SVM support vector machine 1555SVR System V Release 1556SVS Separate Virtual Space 1557SWF Shockwave Flash 1558SWIG simplified wrapper [and] interface generator 1559SYR symbol timing recovery 1560TA test assertion 1561TA transmitter address 1562TACACS terminal access controller access-control system 1563TAI international atomic time 1564TAO track at once 1565TAOCP The Art of Computer Programming 1566TAP Test Anything Protocol 1567TAS test and set 1568TB terabyte 1569TBNF transitional backus-naur form 1570TCB trace capture buffer 1571TCB trusted computing base 1572TCC thermal control circuit 1573TCL tool command language 1574TCP Transmission Control Protocol 1575TCQ tagged command queueing 1576TDC time [to] digital converter 1577TDD test-driven development 1578TDD time division duplex 1579TDM time division multiplexing 1580TDMA time division multiple access 1581TDOA time difference of arrival 1582TDP thermal design {point,power} 1583TDR time-domain reflectometry 1584TECO Text Editor and Corrector 1585TFT thin film transistor 1586TFTP Trivial File Transfer Protocol 1587TIAS try it and see 1588TIFF tagged image file format 1589TITS try it to see 1590TK temporal key 1591TKIP Temporal Key Integrity Protocol 1592TLA top level aggregator 1593TLB translation lookaside buffer 1594TLD top level domain 1595TLER time-limited error recovery 1596TLI transport layer interface 1597TLS thread local storage 1598TLS transport layer security 1599TM Turing machine 1600TM thermal monitor 1601TMG transmogrifier 1602TMDS transition minimized differential signaling 1603TMO timeout 1604TOD time of day 1605TOS terms of service 1606TOS trusted operating system 1607TOS type of service 1608TP transaction processing 1609TPI tracks per inch 1610TPM transactions per minute 1611TPM trusted platform module 1612TPR task priority register 1613TPS transactions per second 1614TPS transmission parameters signaling 1615TR task register 1616TR token ring 1617TRL timing recovery loop 1618TRNG true random number generator 1619TS terminal services 1620TS time series 1621TS time stamp 1622TS transport stream 1623TSAN Thread Sanitizer 1624TSC time stamp counter 1625TSD time stamp disable 1626TSDB time series database 1627TSL test, set, lock 1628TSO time sharing option 1629TSO Total Store Ordering 1630TSP Time-Stamp Protocol 1631TSP Tunnel Setup Protocol 1632TSP time synchronization protocol 1633TSP traveling salesman problem 1634TSS task state segment 1635TTL time to live 1636TTL transistor-transistor logic 1637TTM translation table maps 1638TTY teletype 1639TUI {terminal,text-based,textual} user interface 1640TX {transmit out,transmitter} 1641TXG transaction group 1642TZ time zone 1643UAC user {access,account} control 1644UAF use-after-free 1645UART universal asynchronous receiver/transmitter 1646UAT user acceptance testing 1647UB undefined behavior 1648UBSAN Undefined Behavior Sanitizer 1649UC uncacheable 1650UCS uniform-cost search 1651UCS unified computing system 1652UCS universal coded character set 1653UDI uniform driver interface 1654UDMA ultra DMA 1655UDO ultra density optical 1656UDP User Datagram Protocol 1657UEFI unified extensible firmware interface 1658UFS Unix File System 1659UGA universal graphics adapter 1660UI unit interval 1661UI user interface 1662UICC universal integrated circuit card 1663UID unique identifier 1664UID user identifier 1665UL upload 1666UMA uniform memory access 1667UMA upper memory area 1668UMB upper memory block 1669UML unified modeling language 1670UMPC ultra-mobile PC 1671UPNP universal plug and play 1672UPS uninterruptible power supply 1673URI uniform resource identifier 1674URL uniform resource locator 1675URN uniform resource name 1676USART universal synchronous/asynchronous receiver/transmitter 1677USB universal serial bus 1678USWC uncacheable speculative write combining 1679UT unit test 1680UTC coordinated universal time 1681UTF unicode transformation formats 1682UTP unshielded twisted pair 1683UTS UNIX time-sharing 1684UUCP Unix-to-Unix Copy Protocol 1685UUID universally unique identifier 1686UUOC useless use of cat 1687UUT unit under test 1688UX user experience 1689VA vertical alignment 1690VA virtual address 1691VA volt-ampere 1692VAX virtual address extension 1693VB Visual Basic 1694VCA variable-gain amplifier 1695VCC common collector voltage 1696VCCP virtual chassis control protocol 1697VCF voltage-controlled filter 1698VCM virtual channel memory 1699VCO voltage-controlled oscillator 1700VCP virtual chassis port 1701VCS version control system 1702VDPAU Video Decode and Presentation API for Unix 1703VES virtual execution system 1704VESA Video Electronics Standards Association 1705VFO variable-frequency oscillator 1706VFS virtual file system 1707VG volume group 1708VGA Video Graphics Array 1709VHDCI very high density cable interconnect 1710VID {VLAN,voltage level} identifier 1711VIM Vi IMproved 1712VIPT virtually indexed, physically tagged 1713VIVT virtually indexed, virtually tagged 1714VLAN virtual local area network 1715VLD variable-length decoding 1716VLIW very long instruction word 1717VLSI very large scale integration 1718VLSM variable length subnet mask 1719VM virtual {machine,memory} 1720VME virtual mode extension 1721VMX vector multimedia extensions 1722VMX virtual machine extensions 1723VNC virtual network computing 1724VOD video on demand 1725VPD vital product data 1726VPN virtual private network 1727VPWS virtual private wire service 1728VR virtual reality 1729VRAM video random access memory 1730VRF virtual routing and forwarding 1731VRM voltage regulator module 1732VROC Virtual RAID On CPU 1733VRRP Virtual Router Redundancy Protocol 1734VSTP VLAN Spanning Tree Protocol 1735VTP VLAN Trunking Protocol 1736VXFS Veritas file sytem 1737VXVM Veritas volume manager 1738W watt 1739W3C World Wide Web Consortium 1740WAFL write anywhere file layout 1741WAMP Web Application Messaging Protocol 1742WAN wide area network 1743WAP Wireless Application Protocol 1744WAP wireless access point 1745WDM Windows Driver Model 1746WDDM Windows Display Driver Model 1747WDT watchdog timer 1748WEP Wired Equivalent Privacy 1749WFI wait for interrupt 1750WFQ weighted fair queuing 1751WH write hit 1752WHEA Windows hardware error architecture 1753WIFI wireless fidelity 1754WLAN wireless local area network 1755WM write miss 1756WMI Windows Management Instrumentation 1757WOL Wake-on-LAN 1758WOM Wake-on-Modem 1759WOR Wake-on-Ring 1760WORM write once read many 1761WP WordPerfect 1762WP word processor 1763WP write protect 1764WPA Wi-Fi Protected Access 1765WPA2 Wi-Fi Protected Access II 1766WPAD web proxy auto-discovery protocol 1767WPS Wi-Fi Protected Setup 1768WRAM window random access memory 1769WS web services 1770WTC write through caching 1771WTD weighted tail drop 1772WWAN wireless wide area network 1773WWW world wide web 1774WYSIAYG what you see is all you get 1775WYSIWYG what you see is what you get 1776XBAR crossbar 1777XDMCP X Display Manager control protocol 1778XER XML encoding rules 1779XGA Extended Graphics Array 1780XHR XMLHttpRequest 1781XIP execute in place 1782XML Extensible Markup Language 1783XNA XNA's not acronymed 1784XNS Xerox network systems 1785XOR exclusive or 1786XP extreme programming 1787XSI X/Open System Interface 1788XSL extensible stylesheet language 1789XSLT extensible stylesheet language transformations 1790XSS cross site scripting 1791XT extended technology 1792XTACACS extended terminal access controller access-control system 1793XTI X/Open transport interface 1794XUL XML user interface language 1795YACC yet another compiler compiler 1796YAML YAML ain't markup language 1797YANG yet another next generation 1798YAWPFAPR you are welcome; please file a problem report 1799YP Yellow Pages 1800YTD year to date 1801ZAP ZFS attribute processor 1802ZBR zone bit recording 1803ZFOD zero-filled on demand 1804ZFS zettabyte file system 1805ZIF zero insertion force 1806ZIFS zero insertion force socket 1807ZIL ZFS intent log 1808ZMA zone multicast address 1809ZOI zero one infinity 1810ZOI zone of influence 1811ZPL ZFS Posix layer 1812ZVOL ZFS Volume 1813