acronyms.comp revision 1.297
1$NetBSD: acronyms.comp,v 1.297 2020/01/27 10:56:29 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 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 537ERC error recovery control 538ERD emergency recovery disk 539ERD entity relationship diagram 540ERE extended regular expression 541ERST error record serialization table 542ESAN Efficiency Sanitizer 543ESB enterprise service bus 544ESDI enhanced small disk interface 545ESDRAM enhanced synchronous dynamic random access memory 546ESI enclosure services interface 547ESS electronic switching system 548ESS extended service set 549ESSID extended service set identifier 550EST enhanced speedstep 551ETL extract, transform, load 552EU execution unit 553EULA end user license agreement 554FAT file allocation table 555FBRAM frame buffer random access memory 556FCIF full common intermediate format 557FCL fiber channel loop 558FCS frame check sequence 559FDC floppy disk controller 560FDD floppy disk drive 561FDDI fiber distributed data interface 562FDE full disk encryption 563FDT flattened device tree 564FEA finite element analysis 565FEC forward error correction 566FET field-effect transistor 567FF finite field 568FF form feed 569FFDH finite-field Diffie-Hellman 570FFH functional fixed hardware 571FFI foreign function interface 572FFM focus follows mouse 573FFS Fast File System 574FFS find first set 575FFT fast Fourier transform 576FG floating gate 577FHSS frequency hop spread spectrum 578FID frequency identifier 579FIFO first in, first out 580FILO first in, last out 581FIPS Federal Information Processing Standards 582FIR fast infrared 583FLOPS floating [point] operations per second 584FLOSS free/libre/open source software 585FM frequency modulation 586FMR false match rate 587FOSS free/open source software 588FPGA field programmable gate array 589FPM fast page mode 590FPR floating point register 591FPU floating point unit 592FQDN fully qualified domain name 593FRR false rejection rate 594FRU field replaceable unit 595FS file system 596FSB front side bus 597FSCK file system check 598FSF Free Software Foundation 599FSK frequency shift keying 600FSM finite-state machine 601FTA fault tree analysis 602FTL flash translation layer 603FTP File Transfer Protocol 604FTPS File Transfer Protocol Secure 605FUS fast user switching 606FWH firmware hub 607FWS folding white space 608GAL generic array logic 609GARP generic attribute registration protocol 610GAS generic address structure 611GC garbage collector 612GCM Galois counter mode 613GCR group-coded recording 614GDI Graphics Device Interface 615GDT global descriptor table 616GECOS general comprehensive operating supervisor 617GEM graphics environment manager 618GEM graphics execution manager 619GENA general event notification architecture 620GHC Glasgow Haskell compiler 621GHES generic hardware error source 622GIC generic interrupt controller 623GID group identifier 624GIF graphics interchange format 625GMCH graphics and memory controller hub 626GNU GNU's Not Unix 627GOP graphics output protocol 628GOT global offset table 629GPE general purpose event 630GPF general protection fault 631GPG GNU Privacy Guard 632GPL [GNU] General Public License 633GPR general purpose register 634GPS generalized processor sharing 635GPT GUID partition table 636GPU graphics processing unit 637GR golden ratio 638GRE generic routing encapsulation 639GSI global system interrupt 640GUI graphical user interface 641GUID globally unique identifier 642GVFS git virtual file system 643HA high availability 644HAL hardware abstraction layer 645HAT hashed array tree 646HATEOAS hypermedia as the engine of application state 647HBA host bus adapter 648HCF halt and catch fire 649HCI host controller interface 650HCI human-computer interaction 651HCL hardware compatibility list 652HDCP High-bandwidth Digital Content Protection 653HDD hard disk drive 654HDL hardware description language 655HDMI High-Definition Multimedia Interface 656HDTV high-definition television 657HECI host embedded controller interface 658HEST hardware error source table 659HEVC high efficiency video coding 660HF high frequency 661HFM highest frequency mode 662HFS hierarchical file system 663HID human interface device 664HKP HTTP Keyserver Protocol 665HLL high-level language 666HMA high memory area 667HMI human-machine interface 668HOOD hierarchical object oriented design 669HP Hewlett-Packard 670HPC high performance computing 671HPET high precision event timer 672HSM hardware security module 673HSM hierarchical storage management 674HT hyper-threading 675HTC hardware thermal control 676HTCC high temperature co-fired ceramic 677HTML HyperText Markup Language 678HTT hyper-threading technology 679HTTP Hypertext Transfer Protocol 680HTTPS Hypertext Transfer Protocol Secure 681HVM hardware virtual machine 682HVDS High-Voltage Differential Signaling 683HWASAN Hardware-assisted Address Sanitizer 684HZ Hertz 685I2O intelligent input/output 686IA information assurance 687IAAS infrastructure as a service 688IANA Internet Assigned Numbers Authority 689IBC iterated block cipher 690IBM International Business Machines 691IBPI international blinking pattern interpretation 692IBS instruction based sampling 693IBSS independent basic service set 694IC integrated circuit 695ICA independent computer architecture 696ICACLS integrity control access control lists 697ICB Internet Citizen's Band 698ICE in-circuit emulator 699ICE internal compiler error 700ICH I/O controller hub 701ICMP Internet Control Message Protocol 702ICT information and communications technology 703ICW initialization command word 704IDA Intel dynamic acceleration 705IDCMP Intuition direct communication message port 706IDCT inverse discrete cosine transform 707IDE integrated development environment 708IDE integrated drive electronics 709IDPS intrusion detection [and] prevention system 710IDRP inter-domain routing protocol 711IDS intrusion detection system 712IDT interrupt descriptor table 713IE Internet Explorer 714IEC International Electrotechnical Commission 715IEEE Institute of Electrical and Electronics Engineers 716IESG Internet Engineering Steering Group 717IETF Internet Engineering Task Force 718IF intermediate frequency 719IFCM isochronous flow control mode 720IFF Interchange File Format 721IFS internal field separator 722IGD Internet gateway device 723IGMP Internet Group Management Protocol 724IGP interior gateway protocol 725IHV independent hardware vendor 726IKE Internet key exchange 727ILM internal loopback mode 728ILOM integrated lights-out management 729ILP instruction level parallelism 730IM instant messaging 731IMAP Internet Message Access Protocol 732IMC integrated memory controller 733IMCR interrupt mode configuration register 734IMR interrupt mask register 735IMS information management system 736IMSI international mobile subscriber identity 737INCITS InterNational Committee for Information Technology Standards 738INODE index node 739IO input/output 740IOCTL input/output control 741IOM input/output managers 742IOMMU input/output memory management unit 743IOT Internet of Things 744IP Internet Protocol 745IP intellectual property 746IPC instructions per cycle 747IPC interprocess communication 748IPCF interprocess communication facility 749IPE integrated programming environment 750IPI intelligent peripheral interface 751IPI interprocessor interrupt 752IPL Initial Program Load 753IPL Interrupt Priority Level 754IPMB Intelligent Platform Management Bus 755IPMI Intelligent Platform Management Interface 756IPNG Internet Protocol, Next Generation 757IPS in-plane switching 758IPS intrusion prevention system 759IPSEC Internet Protocol Security 760IRC Internet Relay Chat 761IRDA infrared data association 762IRDP ICMP Router Discovery Protocol 763IRQ interrupt request 764IRQL interrupt request level 765IRR interrupt request register 766IRTF Internet Research Task Force 767IS information system 768ISA industry standard architecture 769ISA instruction set architecture 770ISE instant secure erase 771ISDN integrated services digital network 772ISI inter-symbol interference 773ISL initial system load 774ISM industrial, scientific, [and] medical 775ISMS information system management system 776ISN initial serial number 777ISO International Standards Organization 778ISOC Internet Society 779ISP Internet service provider 780ISR in-service register 781ISR interrupt service routine 782IST internal spanning tree 783IST interrupt stack table 784ISV independent software vendor 785IT information technology 786ITB Intel Turbo Boost 787ITIL information technology infrastructure library 788ITP in-target probe 789ITSM IT service management 790IV initialization vector 791IVT interrupt vector table 792JBOD just a bunch of disks 793JCL Job Control Language 794JFET junction [gate] field-effect transistor 795JIT just in time 796JPEG Joint Photographic Experts Group 797JRE Java Runtime Environment 798JSON JavaScript Object Notation 799JTAG joint test action group 800KASLR kernel address space layout randomization 801KB keyboard 802KB kilobyte 803KBD keyboard 804KBD kilobaud 805KCS keyboard controller style 806KLOC thousand lines of code 807KMS kernel-mode setting 808KPI kernel programming interface 809KVA kernel virtual address 810KVM kernel virtual machine 811KVM kernel virtual memory 812KVM keyboard, video, [and] mouse 813L2CAP link layer control and adaptation protocol 814LAMP Linux Apache MySQL {Perl,PHP,Python} 815LAN local area network 816LAPIC local advanced programmable interrupt controller 817LAR load access rights 818LBA logical block addressing 819LBNF labeled backus-naur form 820LBS location-based service 821LCD liquid crystal display 822LCP link control protocol 823LDA local delivery agent 824LDAP Lightweight Directory Access Protocol 825LDR light-dependent resistor 826LDT local descriptor table 827LE logical extent 828LED light emitting diode 829LELL low energy link layer 830LER label edge router 831LF line feed 832LF low frequency 833LFM lowest frequency mode 834LFN long file names 835LFO low-frequency oscillation 836LFS log-structured file system 837LFU least frequently used 838LHP loop heat pipe 839LIF logical interchange format 840LIFO last in, first out 841LILO LInux LOader 842LILO last in, last out 843LINT local interrupt 844LIR local Internet registry 845LISP LISt Processor 846LISP Locator/ID Separation Protocol 847LKM {Linux,loadable} kernel module 848LKML Linux kernel mailing list 849LL load linked 850LL/SC load linked/store conditional 851LLC logical link control 852LLD low-level design 853LLDD low-level design document 854LLDP link layer discovery protocol 855LLF low level format 856LLMNR link-local multicast name resolution 857LLVM Low Level Virtual Machine 858LM long mode 859LMCE local machine check exception 860LMI local management interface 861LMM link management mode 862LMP link management protocol 863LNO loop nest optimization 864LOC lines of code 865LOM lights-out management 866LPE Linux performance events 867LPC low pin count 868LPS local positioning system 869LRC longitudinal redundancy check 870LRM left-to-right mark 871LRO left-to-right override 872LRU least recently used 873LS link state 874LSAN Leak Sanitizer 875LSB Linux standards base 876LSB least significant {bit,byte} 877LSI large scale integration 878LSL load segment limit 879LSM log structured merge 880LSN Large Scale NAT 881LSN log sequence number 882LSR label switch router 883LTCC low temperature co-fired ceramic 884LTO linear tape-open 885LTO link time optimization 886LTR left to right 887LTR load task register 888LTR letter(-sized paper) 889LTS long term support 890LUA Lua Uppercase Accident 891LUN logical unit number 892LV logical volume 893LVM logical volume management 894LVT local vector table 895LVDS Low-Voltage Differential Signaling 896LWP light-weight process 897LZSS Lempel Ziv Storer Szymanski 898LZW Lempel Ziv Welch 899MAB MAC authentication bypass 900MAC mandatory access control 901MAC {media,medium} access control 902MAC message authentication {check,code} 903MADT multiple APIC descriptor table 904MAMR microwave-assisted magnetic recording 905MB megabyte 906MBA multi-boot agent 907MBR master boot record 908MBS megabits per second 909MC memory controller 910MCA machine check architecture 911MCA MicroChannel architecture 912MCC multiversion concurrency control 913MCE machine check exception 914MCGA Multi-Color Graphics Array 915MCH memory controller hub 916MCLAG multi-chassis link aggregation 917MCM multi-chip module 918MCQ memory controlled queue 919MD machine-dependent 920MD-SAL model-driven service abstraction layer 921MDA mail delivery agent 922MDA Monochrome Display Adapter 923MDC Management Data Clock 924MDI Medium Dependent Interface 925MDI-X Medium Dependent Interface Crossover 926MDIO Management Data Input/Output 927MDMX MIPS Digital Media eXtension 928MDRAM multibank dynamic random access memory 929MESI modified, exclusive, shared, invalid 930MFC merge from current 931MFC Microsoft Foundation Classes 932MFM modified frequency modulation 933MFU most frequently used 934MGCP media gateway control protocol 935MHU message handling unit 936MI machine-independent 937MI machine interface 938MIB management information base 939MIC message integrity {check,code} 940MID mobile Internet device 941MIDI musical instrument digital interface 942MIF management information format 943MII media independent interface 944MIM man in the middle 945MIMD multiple instruction, multiple data 946MIME Multipurpose Internet Mail Extensions 947MIMO multiple input multiple output 948MIPS million instructions per second 949MIPS Microprocessor without Interlocked Pipeline Stages 950MISD multiple instruction, single data 951MIT Massachusetts Institute of Technology 952MITM man in the middle 953ML machine language 954ML machine learning 955ML mailing list 956ML markup language 957ML maximum likelihood 958MLC multi-level cell 959MLD multicast listener discovery 960MLHP micro loop heat pipe 961MMF multi-mode fiber 962MMIC monolithic microwave integrated circuit 963MMIO memory mapped input/output 964MMORPG massive multiplayer online role playing game 965MMRP multiple MAC registration protocol 966MMU memory management unit 967MMX matrix math extension 968MMX multimedia extension 969MMX multiple math extension 970MO magneto-optical 971MOESI modified, owned, exclusive, shared, invalid 972MOF maximum operating frequency 973MOSFET metal-oxide-semiconductor field-effect transistor 974MOSI modified, owned, shared, invalid 975MP multi-platform 976MP multiplayer 977MP {multiprocessing,multiprocessor} 978MPEG moving picture experts group 979MPI message passing interface 980MPLS Multiprotocol Label Switching 981MPP massively parallel processor 982MPS memory pool system 983MPS multiprocessor specification 984MQTT Message Queuing Telemetry Transport 985MR modem ready 986MRO method resolution order 987MRP multiple registration protocol 988MRU most recently used 989MS Microsoft 990MSAN Memory Sanitizer 991MSB most significant {bit,byte} 992MSC message sequence chart 993MSE mean square error 994MSF minutes seconds frames 995MSI message signaled interrupt 996MSI modified, shared, invalid 997MSR {machine state,model-specific} register 998MSS maximum segment size 999MSTP Multiple Spanning Tree Protocol 1000MT machine translation 1001MTA mail transfer agent 1002MTBF mean time between failures 1003MTP media transfer protocol 1004MTRR memory type range register 1005MTTF mean time to failure 1006MTU maximum transmission unit 1007MUA mail user agent 1008MUD multi-user domain 1009MVCC multiversion concurrency control 1010MVR multicast VLAN registration 1011MVRP multiple VLAN registration protocol 1012MWE module width encoding 1013MX mail exchange 1014NACK negative acknowledgement 1015NAK negative acknowledgement 1016NAN neighbor awareness networking 1017NAN not a number 1018NAPT Network Address Port Translation 1019NAS network attached storage 1020NAT network address translation 1021NAV network allocation vector 1022NC numerical control 1023NC-SI network controller sideband interface 1024NCO numerically-controlled oscillator 1025NCP Network Control Protocol 1026NCSI network connectivity status indicator 1027NCQ native command queuing 1028ND neighbor discovery 1029NDFA nondeterministic finite automaton 1030NDIS network driver interface specification 1031NE numeric error 1032NEWS Network extensible Window System 1033NFA nondeterministic finite automaton 1034NFC near-field communication 1035NFCI no functional change intended 1036NFS network file system 1037NFV network function virtualization 1038NIA next instruction address 1039NIC network information center 1040NIC network interface card 1041NIDS network intrusion detection system 1042NIP network interface protocol 1043NIPS network intrusion prevention system 1044NIS network information service 1045NIST National Institute of Standards and Technology 1046NLS native language support 1047NMI non-maskable interrupt 1048NNTP Network News Transfer Protocol 1049NOC network operations center 1050NOP no operation 1051NOS network operating system 1052NP nondeterministic polynomial time 1053NRND not recommended for new designs 1054NRZ non-return to zero 1055NSA nation-state adversary 1056NSA no such agency 1057NSA National Security Agency 1058NTM non-deterministic Turing machine 1059NTP Network Time Protocol 1060NUMA non-uniform memory access 1061NURBS non-uniform rational basis spline 1062NVMM NetBSD Virtual Machine Monitor 1063NVMM non-volatile main memory 1064NVRAM non-volatile random access memory 1065NW not write-through 1066NX no execute 1067OAEP optimal asymmetric encryption padding 1068OAM operations, administration, and {management,maintenance} 1069OBO off by one 1070OBOE off by one error 1071OCL object constraint language 1072OCR optical character recognition 1073ODE offline device environment 1074ODI open data-link interface 1075ODM object data manager 1076ODCM on-demand clock modulation 1077ODT on-die termination 1078OEM original equipment manufacturer 1079OFB output feedback 1080OFDM orthogonal frequency division multiplexing 1081OFET organic field-effect transistor 1082OLAP online analytical processing 1083OLE object linking and embedding 1084OLTP online transaction processing 1085ONFI open nand flash interface 1086OO OpenOffice 1087OO object oriented 1088OOB out of band 1089OOE out of order execution 1090OOM out of memory 1091OOO OpenOffice.org 1092OOP object oriented programming 1093OOPS object oriented programming systems 1094OOSE object oriented software engineering 1095OPM operations per minute 1096OPS operations per second 1097OQL Object Query Language 1098ORB object request broker 1099ORM object-relational mapping 1100OS operating system 1101OSD object-based storage device 1102OSD open source definition 1103OSF open software foundation 1104OSI Open Source Initiative 1105OSI open systems interconnection 1106OSPF open shortest path first 1107OSPM OS power management 1108OSS open sound system 1109OSS open source software 1110OSVW operating system visible workarounds 1111OTP one time password 1112OTP open telecom platform 1113OU organizational unit 1114OUI organizationally unique identifier 1115OWL Web Ontology Language 1116P2P PCI to PCI 1117P2P peer to peer 1118PA phase accumulator 1119PA physical address 1120PAAS platform as a service 1121PAC phase-amplitude converter 1122PAE physical address extension 1123PAGP port aggregation protocol 1124PAL phase alternating line 1125PAL programmable array logic 1126PAM pluggable authentication modules 1127PAM pulse amplitude modulation 1128PAP password authentication protocol 1129PAT page attribute table 1130PAT port address translation 1131PATA parallel ATA 1132PAX portable archive exchange 1133PBE pending break encoding 1134PBE programming by example 1135PC personal computer 1136PC program counter 1137PCB printed circuit board 1138PCB process control block 1139PCB Protocol Control Block 1140PCBC propagating cipher block chaining 1141PCC Portable C Compiler 1142PCD page-level cache disable 1143PCE path computation element 1144PCE performance-monitor counter enable 1145PCEP Path Computation Element Protocol 1146PCH platform controller hub 1147PCI peripheral component interconnect 1148PCM phase change memory 1149PCM pulse code modulation 1150PCMCIA Personal Computer Memory Card International Association 1151PCP Port Control Protocol 1152PD public domain 1153PDA personal digital assistant 1154PDA pushdown automaton 1155PDAG propositional directed acyclic graph 1156PDB power distribution board 1157PDF portable document format 1158PDM pulse-duration modulation 1159PDN pull-down network 1160PDP page {descriptor,directory} page 1161PDS product data sheet 1162PDU protocol data unit 1163PE protection enable 1164PE provider edge 1165PEAP Protected EAP 1166PECI platform environment control interface 1167PEP protocol extension protocol 1168PER packed encoding rules 1169PFS perfect forward secrecy 1170PGAS partitioned global address space 1171PGE page global enable 1172PGP Pretty Good Privacy 1173PHB PCI host bridge 1174PHP PHP: Hypertext Preprocessor 1175PIC performance instrumentation counters 1176PIC position independent code 1177PIC programmable interrupt controller 1178PICNIC problem in chair, not in computer 1179PID process id 1180PIE position independent executable 1181PIL Priority Interrupt Level 1182PIM personal information manager 1183PIM platform-independent model 1184PIO programmed input/output 1185PIPT physically indexed, physically tagged 1186PIQ prefetch input queue 1187PIT programmable interrupt timer 1188PIV personal identity verification 1189PIX Private Internet eXchange 1190PKCS public-key cryptography standards 1191PKI public key infrastructure 1192PLC programmable logic controller 1193PLD programmable logic device 1194PLL phase locked loop 1195PLRU pseudo LRU 1196PLTM package level thermal management 1197PM power management 1198PM {phase,pulse} modulation 1199PMC performance monitoring counters 1200PME power management event 1201PMEG page map entry group 1202PMI performance monitoring infrastructure 1203PMI platform management interrupt 1204PMIC power management integrated circut 1205PMIO port-mapped input/output 1206PMT photo-multiplier tube 1207PMU performance monitoring units 1208PMU power management unit 1209PNG portable network graphics 1210PNP plug and play 1211POE power over ethernet 1212POF probability of failure 1213POP Post Office Protocol 1214POP power on password 1215POR plan of record 1216POSIX Portable Operating System Interface [for Unix] 1217POST power on self test 1218POTS plain old telephone system 1219POWER Performance Optimization With Enhanced RISC 1220POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1221PP pair programming 1222PPB PCI [to] PCI bridge 1223PPC PowerPC 1224PPC Power Performance Computing 1225PPI pixels per inch 1226PPM pages per minute 1227PPP Point-to-Point Protocol 1228PPPOA Point-to-Point Protocol over ATM 1229PPPOE Point-to-Point Protocol over Ethernet 1230PPR processor programming reference 1231PPT powerpoint 1232PPT punched paper tape 1233PPU physics processing unit 1234PRAM Parameter RAM 1235PRBS pseudorandom bit sequence 1236PRG pseudorandom generator 1237PRF pseudorandom function [family] 1238PRML partial response, maximum likelihood 1239PRN pseudorandom {noise,number} 1240PRNG pseudorandom number generator 1241PROM programmable read only memory 1242PRP pseudorandom permutation 1243PRU Programmable Realtime Unit 1244PS PostScript 1245PSD power spectral density 1246PSE page size extensions 1247PSK phase shift keying 1248PSK pre-shared key 1249PSTN public switched telephone network 1250PSW program status word 1251PTE page table entry 1252PTLA pseudo top level aggregator 1253PTP page table page 1254PTV perceived target value 1255PU processing unit 1256PUC personal unblocking code 1257PUN physical unit number 1258PV physical volume 1259PVC permanent virtual circuit 1260PVG physical volume group 1261PVI protected-mode virtual interrupt 1262PVRST Per-VLAN rapid spanning tree 1263PVST Per-VLAN Spanning Tree 1264PWM pulse width modulation 1265PXE preboot execution environment 1266QA quality assurance 1267QAM quadrature amplitude modulation 1268QAM quality assurance management 1269QBE query by example 1270QC quality control 1271QDI quasi delay insensitive 1272QCIF quarter common intermediate format 1273QOS quality of service 1274QVL qualified vendor list 1275R/O read only 1276R/W read/write 1277RA receiver address 1278RA remote assistance 1279RA resource affinity 1280RA router advertisement 1281RAD rapid application development 1282RADIUS remote authentication dial-in user service 1283RAID redundant array of {independent,inexpensive} disks 1284RAM random access memory 1285RAS reliability, availability and serviceability 1286RAS remote access service 1287RAS restartable atomic sequence 1288RAS row address strobe 1289RBF radial basis function 1290RBNF routing backus-naur form 1291RBT red-black tree 1292RC release candidate 1293RC remote control 1294RC run commands 1295RCS Revision Control System 1296RCS revision control system 1297RCU read, copy, update 1298RDB Rigid Disk Block 1299RDBMS relational database management system 1300RDF Resource Description Framework 1301RDM relational data model 1302RDMA remote direct memory access 1303RDP remote desktop protocol 1304RDRAM Rambus DRAM 1305RE regular expression 1306REPL read, evaluate, print, loop 1307REST representational state transfer 1308RF radio frequency 1309RFB remote frame buffer 1310RFI radio frequency interference 1311RFO request for ownership 1312RFU reserved for future use 1313RGB red green blue 1314RGBA red green blue alpha 1315RGMII reduced gigabit media independent interface 1316RH read hit 1317RHEL Red Hat Enterprise Linux 1318RHL Red Hat Linux 1319RIB routing information base 1320RIFF Resource Interchange File Format 1321RIP Raster Image Processor 1322RIP Routing Information Protocol 1323RIR regional Internet registry 1324RISC reduced instruction set {computer,computing} 1325RKM ROM Kernel Manual 1326RLE run length encoding 1327RLL run length limited 1328RLO right-to-left override 1329RM read miss 1330RMCP Remote Management Control Protocol 1331RMI remote method invocation 1332RMO Relaxed Memory Ordering 1333RMPM rapid memory power management 1334RMS root mean square 1335RMW read, modify, write 1336RNG random number generator 1337ROM read only memory 1338RPC remote procedure call 1339RPKI resource PKI 1340RPL requested privilege level 1341RPM revolutions per minute 1342RPN reverse Polish notation 1343RPVST Rapid Per-VLAN Spanning Tree 1344RR random replacement 1345RR round robin 1346RS relay station 1347RSA Rivest, Shamir, [and] Adleman 1348RSIP Realm Specific IP 1349RSN Robust Secure Network 1350RSS really simple syndication 1351RSS residual sum of squares 1352RSTP Rapid Spanning Tree Protocol 1353RT real time 1354RTC real time clock 1355RTC real time computing 1356RTF rich text format 1357RTL register transfer language 1358RTL resistor-transistor logic 1359RTL right to left 1360RTOS real time operating system 1361RTS request to send 1362RTT round trip time 1363RUP rational unified process 1364RW Rabin-Williams 1365RWM read-write memory 1366RX {receive,receiver} 1367S/PDIF Sony/Philips Digital Interface Format 1368SA security advisory 1369SA security association 1370SA source address 1371SA structured analysis 1372SAAS software as a service 1373SABRE Semi-automated business research environment 1374SACD super audio compact disc 1375SAD security association database 1376SAF-TE SCSI accessed fault-tolerant enclosure 1377SAGE Semi-automated ground environment 1378SAL {service,system} abstraction layer 1379SAM serial access memory 1380SAM sum addressed memory 1381SAML security assertion markup language 1382SAN storage area network 1383SAP service access point 1384SAPIC streamlined advanced programmable interrupt controller 1385SASD structured analysis, structured design 1386SASI Shugart Associates System Interface 1387SASL simple authentication [and] security layer 1388SATA serial advanced technology attachment 1389SAX simple API for XML 1390SB sound blaster 1391SBSA server base system architecture 1392SBU standard build unit 1393SC store conditional 1394SCA source code analyzer 1395SCADA supervisory control and data acquisition 1396SCC single chip cloud 1397SCC source code control 1398SCCP skinny call control protocol 1399SCCS Source Code Control System 1400SCI scalable coherent interface 1401SCI system control interrupt 1402SCM software configuration management 1403SCM source code management 1404SCM storage-class memory 1405SCO synchronous connection orientated 1406SCP secure copy 1407SCP system control processor 1408SCPI system control and power interface 1409SCSI Small Computer System Interface 1410SCTP Stream Control Transmission Protocol 1411SDDC software defined data center 1412SDEI software delegated exception interface 1413SDI symbol deinterleave 1414SDK software development kit 1415SDL Simple Declarative Language 1416SDL Simple Direct-media Layer 1417SDLC {software,system,systems} development life cycle 1418SDN software defined networking 1419SDP Session Description Protocol 1420SDR software defined radio 1421SDRAM synchronous dynamic random access memory 1422SDS software defined storage 1423SDT syntax-directed translation 1424SEA synchronous external abort 1425SEGV segmentation violation 1426SED self-encrypting drive 1427SED stream editor 1428SEMB serial ATA enclosure management bridge 1429SEO search engine optimization 1430SES SCSI enclosure services 1431SFC sequential function chart 1432SFI simple firmware interface 1433SFI software fault isolation 1434SFTP SSH File Transfer Protocol 1435SFTP Serial File Transfer Protocol 1436SFTP Simple File Transfer Protocol 1437SGI Silicon Graphics, Inc 1438SGI software generated interrupt 1439SGMII serial gigabit media independent interface 1440SGPIO serial general purpose input/output 1441SGRAM synchronous graphics random access memory 1442SHA secure hash algorithm 1443SICP structure and interpretation of computer programs 1444SIDH supersingular isogeny Diffie-Hellman 1445SIEM security information and event management 1446SIF source input format 1447SIFS short inter-frame space 1448SIM subscriber identity module 1449SIMD single instruction, multiple data 1450SIMM single inline memory module 1451SIP Session Initiation Protocol 1452SIR signal-to-interference ratio 1453SIR slow infrared 1454SISD single instruction, single data 1455SLAAC stateless address auto-configuration 1456SLC single-level cell 1457SLDRAM synchronous-link dynamic random access memory 1458SLED single large expensive disk 1459SLI scalable link interface 1460SLI scan-line interleave 1461SLIC system license internal code 1462SLOC source lines of code 1463SLRU segmented LRU 1464SMA smart memory access 1465SMAF system management action field 1466SMAP Simple Mail Access Protocol 1467SMAP supervisor mode access prevention 1468SMART self-monitoring analysis and reporting technology 1469SMB Server Message Block 1470SMB system management bus 1471SMBIOS System Management BIOS 1472SMC system management controller 1473SMD storage module device 1474SMEP supervisor mode execution protection 1475SMF single mode fiber 1476SMI structure of management information 1477SMI system management interrupt 1478SMM system management mode 1479SMP serial management protocol 1480SMP symmetric multiprocessing 1481SMT simultaneous multithreading 1482SMTP Simple Mail Transfer Protocol 1483SMU system management unit 1484SNA systems network architecture 1485SNAP Sub-Network Access Protocol 1486SNIA Storage Networking Industry Association 1487SNMP Simple Network Management Protocol 1488SNR signal-to-noise ratio 1489SOA service oriented architecture 1490SOAP Simple Object Access Protocol 1491SOC system on chip 1492SOF start of frame 1493SOH start of header 1494SOHO small office/home office 1495SOL serial over LAN 1496SOM system on module 1497SP service pack 1498SP stack pointer 1499SPA storage pool allocator 1500SPAN switched port analyzer 1501SPARC scalable processor architecture 1502SPARQL SPARQL Protocol and RDF Query Language 1503SPD security policy database 1504SPD serial presence detect 1505SPDIF Sony/Philips digital interface format 1506SPI serial peripheral interface 1507SPI stateful packet inspection 1508SPL system interrupt priority level 1509SPL spinlock 1510SPMD single process, multiple data 1511SPR special purpose register 1512SPT sectors per track 1513SQA software quality assurance 1514SQCIF sub quarter common intermediate format 1515SQL Structured Query Language 1516SRAM static random access memory 1517SRC sample rate conversion 1518SRP SCSI RDMA protocol 1519SRR shaped round robin 1520SS self-snoop 1521SS stack segment 1522SSA static single assignment 1523SSAP source service access point 1524SSB single-sideband modulation 1525SSC spread spectrum clock 1526SSD solid state drive 1527SSE streaming SIMD extensions 1528SSFDC solid state floppy disc card 1529SSH secure shell 1530SSI server side includes 1531SSID service set identifier 1532SSL secure sockets layer 1533SSP stack smashing protection 1534STC software thermal control 1535STD state transition diagram 1536STM software transactional memory 1537STOMP Streaming Text Oriented Messaging Protocol 1538STP Spanning Tree Protocol 1539STP shielded twisted pair 1540STRG spanning tree root guard 1541SUN Stanford University Network 1542SUS Single Unix Specification 1543SUT system under test 1544SVC switched virtual circuit 1545SVG scalable vector graphics 1546SVGA Super Video Graphics Array 1547SVI {switch,switched} virtual interface 1548SVM secure virtual machine 1549SVM support vector machine 1550SVR System V Release 1551SVS Separate Virtual Space 1552SWF Shockwave Flash 1553SWIG simplified wrapper [and] interface generator 1554SYR symbol timing recovery 1555TA test assertion 1556TA transmitter address 1557TACACS terminal access controller access-control system 1558TAI international atomic time 1559TAO track at once 1560TAOCP The Art of Computer Programming 1561TAP Test Anything Protocol 1562TAS test and set 1563TB terabyte 1564TBNF transitional backus-naur form 1565TCB trace capture buffer 1566TCB trusted computing base 1567TCC thermal control circuit 1568TCL tool command language 1569TCP Transmission Control Protocol 1570TCQ tagged command queueing 1571TDC time [to] digital converter 1572TDD test-driven development 1573TDD time division duplex 1574TDM time division multiplexing 1575TDMA time division multiple access 1576TDOA time difference of arrival 1577TDP thermal design {point,power} 1578TDR time-domain reflectometry 1579TECO Text Editor and Corrector 1580TFT thin film transistor 1581TFTP Trivial File Transfer Protocol 1582TIAS try it and see 1583TIFF tagged image file format 1584TITS try it to see 1585TK temporal key 1586TKIP Temporal Key Integrity Protocol 1587TLA top level aggregator 1588TLB translation lookaside buffer 1589TLD top level domain 1590TLER time-limited error recovery 1591TLI transport layer interface 1592TLS thread local storage 1593TLS transport layer security 1594TM Turing machine 1595TM thermal monitor 1596TMG transmogrifier 1597TMDS transition minimized differential signaling 1598TMO timeout 1599TOD time of day 1600TOS terms of service 1601TOS trusted operating system 1602TOS type of service 1603TP transaction processing 1604TPI tracks per inch 1605TPM transactions per minute 1606TPM trusted platform module 1607TPR task priority register 1608TPS transactions per second 1609TPS transmission parameters signaling 1610TR task register 1611TR token ring 1612TRL timing recovery loop 1613TRNG true random number generator 1614TS terminal services 1615TS time series 1616TS time stamp 1617TS transport stream 1618TSAN Thread Sanitizer 1619TSC time stamp counter 1620TSD time stamp disable 1621TSDB time series database 1622TSL test, set, lock 1623TSO time sharing option 1624TSO Total Store Ordering 1625TSP Time-Stamp Protocol 1626TSP Tunnel Setup Protocol 1627TSP time synchronization protocol 1628TSP traveling salesman problem 1629TSS task state segment 1630TTL time to live 1631TTL transistor-transistor logic 1632TTM translation table maps 1633TTY teletype 1634TUI {terminal,text-based,textual} user interface 1635TX {transmit out,transmitter} 1636TXG transaction group 1637TZ time zone 1638UAC user {access,account} control 1639UAF use-after-free 1640UART universal asynchronous receiver/transmitter 1641UAT user acceptance testing 1642UB undefined behavior 1643UBSAN Undefined Behavior Sanitizer 1644UC uncacheable 1645UCS uniform-cost search 1646UCS unified computing system 1647UCS universal coded character set 1648UDI uniform driver interface 1649UDMA ultra DMA 1650UDO ultra density optical 1651UDP User Datagram Protocol 1652UEFI unified extensible firmware interface 1653UFS Unix File System 1654UGA universal graphics adapter 1655UI unit interval 1656UI user interface 1657UICC universal integrated circuit card 1658UID unique identifier 1659UID user identifier 1660UL upload 1661UMA uniform memory access 1662UMA upper memory area 1663UMB upper memory block 1664UML unified modeling language 1665UMPC ultra-mobile PC 1666UPNP universal plug and play 1667UPS uninterruptible power supply 1668URI uniform resource identifier 1669URL uniform resource locator 1670URN uniform resource name 1671USART universal synchronous/asynchronous receiver/transmitter 1672USB universal serial bus 1673USWC uncacheable speculative write combining 1674UT unit test 1675UTC coordinated universal time 1676UTF unicode transformation formats 1677UTP unshielded twisted pair 1678UTS UNIX time-sharing 1679UUCP Unix-to-Unix Copy Protocol 1680UUID universally unique identifier 1681UUOC useless use of cat 1682UUT unit under test 1683UX user experience 1684VA vertical alignment 1685VA virtual address 1686VA volt-ampere 1687VAX virtual address extension 1688VB Visual Basic 1689VCA variable-gain amplifier 1690VCC common collector voltage 1691VCCP virtual chassis control protocol 1692VCF voltage-controlled filter 1693VCM virtual channel memory 1694VCO voltage-controlled oscillator 1695VCP virtual chassis port 1696VCS version control system 1697VDPAU Video Decode and Presentation API for Unix 1698VES virtual execution system 1699VESA Video Electronics Standards Association 1700VFO variable-frequency oscillator 1701VFS virtual file system 1702VG volume group 1703VGA Video Graphics Array 1704VHDCI very high density cable interconnect 1705VID {VLAN,voltage level} identifier 1706VIM Vi IMproved 1707VIPT virtually indexed, physically tagged 1708VIVT virtually indexed, virtually tagged 1709VLAN virtual local area network 1710VLD variable-length decoding 1711VLIW very long instruction word 1712VLSI very large scale integration 1713VLSM variable length subnet mask 1714VM virtual {machine,memory} 1715VME virtual mode extension 1716VMX vector multimedia extensions 1717VMX virtual machine extensions 1718VNC virtual network computing 1719VOD video on demand 1720VPD vital product data 1721VPN virtual private network 1722VPWS virtual private wire service 1723VR virtual reality 1724VRAM video random access memory 1725VRF virtual routing and forwarding 1726VRM voltage regulator module 1727VROC Virtual RAID On CPU 1728VRRP Virtual Router Redundancy Protocol 1729VSTP VLAN Spanning Tree Protocol 1730VTP VLAN Trunking Protocol 1731VXFS Veritas file sytem 1732VXVM Veritas volume manager 1733W watt 1734W3C World Wide Web Consortium 1735WAFL write anywhere file layout 1736WAMP Web Application Messaging Protocol 1737WAN wide area network 1738WAP Wireless Application Protocol 1739WAP wireless access point 1740WDM Windows Driver Model 1741WDDM Windows Display Driver Model 1742WDT watchdog timer 1743WEP Wired Equivalent Privacy 1744WFI wait for interrupt 1745WFQ weighted fair queuing 1746WH write hit 1747WHEA Windows hardware error architecture 1748WIFI wireless fidelity 1749WLAN wireless local area network 1750WM write miss 1751WMI Windows Management Instrumentation 1752WOL Wake-on-LAN 1753WOM Wake-on-Modem 1754WOR Wake-on-Ring 1755WORM write once read many 1756WP WordPerfect 1757WP word processor 1758WP write protect 1759WPA Wi-Fi Protected Access 1760WPA2 Wi-Fi Protected Access II 1761WPAD web proxy auto-discovery protocol 1762WPS Wi-Fi Protected Setup 1763WRAM window random access memory 1764WS web services 1765WTC write through caching 1766WTD weighted tail drop 1767WWAN wireless wide area network 1768WWW world wide web 1769WYSIAYG what you see is all you get 1770WYSIWYG what you see is what you get 1771XBAR crossbar 1772XDMCP X Display Manager control protocol 1773XER XML encoding rules 1774XGA Extended Graphics Array 1775XHR XMLHttpRequest 1776XIP execute in place 1777XML Extensible Markup Language 1778XNA XNA's not acronymed 1779XNS Xerox network systems 1780XOR exclusive or 1781XP extreme programming 1782XSI X/Open System Interface 1783XSL extensible stylesheet language 1784XSLT extensible stylesheet language transformations 1785XSS cross site scripting 1786XT extended technology 1787XTACACS extended terminal access controller access-control system 1788XTI X/Open transport interface 1789XUL XML user interface language 1790YACC yet another compiler compiler 1791YAML YAML ain't markup language 1792YANG yet another next generation 1793YAWPFAPR you are welcome; please file a problem report 1794YP Yellow Pages 1795YTD year to date 1796ZAP ZFS attribute processor 1797ZBR zone bit recording 1798ZFOD zero-filled on demand 1799ZFS zettabyte file system 1800ZIF zero insertion force 1801ZIFS zero insertion force socket 1802ZIL ZFS intent log 1803ZMA zone multicast address 1804ZOI zero one infinity 1805ZOI zone of influence 1806ZPL ZFS Posix layer 1807ZVOL ZFS Volume 1808