acronyms.comp revision 1.323
1$NetBSD: acronyms.comp,v 1.323 2021/04/16 15:53:55 pgoyette 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 65AOT ahead of time 66AP access point 67AP application processor 68APFS Apple file system 69API application programming interface 70APEI ACPI platform error interface 71APIC advanced programmable interrupt controller 72APIPA automatic private IP addressing 73APM advanced power management 74APM application performance management 75APU accelerated processing unit 76APT advanced persistent threat 77AQM active queue management 78ARAT always running APIC timer 79ARC adaptive replacement cache 80ARC Advanced RISC Computing 81ARC automatic reference counting 82ARM Advanced RISC Machines 83ARP Address Resolution Protocol 84ARPA Advanced Research Projects Agency 85ARQ automatic repeat request 86ARR address range register 87ARU audio response unit 88AS autonomous system 89ASA Adaptive Security Appliance 90ASAN Address Sanitizer 91ASC advanced smart cache 92ASCII American Standard Code for Information Interchange 93ASD agile software development 94ASE advanced software environment 95ASF alert standard format 96ASIC application-specific integrated circuit 97ASK amplitude shift keying 98ASLR address space layout randomization 99ASN autonomous system number 100ASP active server pages 101ASP auxiliary storage pool 102ASPM active state power management 103ASQ automated software quality 104ASR address space register 105ASR Apple software restore 106AST abstract syntax tree 107AST asynchronous system trap 108AT access time 109AT advanced technology 110ATA advanced technology attachment 111ATAPI advanced technology attachment packet interface 112ATC address translation cache 113ATF ARM trusted firmware 114ATF automated testing framework 115ATM asynchronous transfer mode 116ATX advanced technology extended 117AV anti virus 118AVB audio video bridging 119AVL Adelson-Velsky-Landis 120AVX advanced vector extensions 121AWDL Apple wireless direct link 122BA byte align 123BAL basic assembly language 124BAR base address register 125BBS bulletin board system 126BCC blind carbon copy 127BCD binary coded decimal 128BCH boot console handler 129BCR byte count register 130BCS base configuration space 131BD baud 132BDD binary decision diagram 133BDI bit deinterleave 134BDUF big design up front 135BEDO burst extended data output 136BER basic encoding rules 137BER bit error {rate,ratio} 138BERT boot error record table 139BFD bidirectional forwarding detection 140BFD binary {file,format} descriptor 141BFKL big fscking kernel lock 142BFS breadth-first search 143BFT binary file transfer 144BGA ball grid array 145BGP Border Gateway Protocol 146BGPSEC BGP Security 147BIND Berkeley Internet Name Daemon 148BIOS Basic Input/Output System 149BIOS built-in operating system 150BIST built-in self-test 151BIU bus interface unit 152BKDG BIOS and kernel developer's guide 153BLAS basic linear algebra subprograms 154BLC back light control 155BLE Bluetooth low energy 156BLOB binary large object 157BM bus master 158BMC baseboard management controller 159BMP basic multilingual plane 160BMP bitmap image file 161BMIC bus master interface controller 162BN boundary neutral 163BNF Backus-Naur form 164BO binary output 165BOF beginning of file 166BOM beginning of message 167BOM byte order mark 168BP base pointer 169BP boot processor 170BPB BIOS parameter block 171BPDU bridge protocol data unit 172BPF Berkeley Packet Filter 173BPI bits per inch 174BPM business process modelling 175BPS bits per second 176BPSK binary phase shift keying 177BQS Berkeley quality software 178BRE basic regular expression 179BS backspace 180BS binary sequence 181BSA basic service area 182BSD Berkeley Software Distribution 183BSDP Boot Service Discovery Protocol 184BSF bit scan forward 185BSOD blue screen of death 186BSP binary space partition 187BSP board support package 188BSP bootstrap processor 189BSR bit scan reverse 190BSS basic service set 191BSS block started by symbol 192BSSID basic service set identifier 193BT BitTorrent 194BT Bluetooth 195BT bit test 196BTC bit test [and] complement 197BTM bus transport mechanism 198BTR bit test [and] reset 199BTS bit test [and] set 200BTS bug tracking system 201BW bandwidth 202BWM block-write mode 203BUAG big ugly ASCII graphic 204CA certificate authority 205CACLS change access control lists 206CAD computer-aided design 207CAM computer assisted manufacturing 208CAM conditional access module 209CAM content addressable memory 210CARP Common Address Redundancy Protocol 211CAS column address strobe 212CAS compare and swap 213CAS computer algebra system 214CASE computer aided software engineering 215CAU control access unit 216CAV constant angular velocity 217CBC cipher block chaining 218CBR constant bit rate 219CC carbon copy 220CCC Chaos Computer Club 221CCD charge coupled device 222CCI co-channel interferer 223CCNUMA cache-coherent non-uniform memory access 224CCTL command completion time limit 225CD cache disable 226CD compact disc 227CDDA compact disc digital audio 228CDL compiler description language 229CDMA code division multiple access 230CDN content delivery network 231CDP Cisco Discovery Protocol 232CDRAM cache dynamic random access memory 233CER canonical encoding rules 234CE customer edge 235CF compact flash 236CFB cipher feedback 237CFG context-free grammar 238CFG control-flow graph 239CFI control-flow integrity sanitizer 240CG control gate 241CGA Color Graphics Adapter 242CGI common gateway interface 243CGN Carrier-Grade NAT 244CHAP Challenge-Handshake Authentication Protocol 245CHFS chip file system 246CHS cylinder/head/sector 247CI continuous integration 248CI {common,component} interface 249CIA confidentiality, integrity, availability 250CIDR Classless Inter-Domain Routing 251CIF common intermediate format 252CIFS Common Internet File System 253CIL common intermediate language 254CIR carrier-to-interference ratio 255CIS contact image sensor 256CISC complex instruction set {computer,computing} 257CJK Chinese, Japanese, [and] Korean 258CLF common log format 259CLI command line interface 260CLI common language infrastructure 261CLR common language runtime 262CLS common language specification 263CLTT closed loop thermal throttling 264CLUT color look-up table 265CLV constant linear velocity 266CM configuration management 267CMA concert multithread architecture 268CMC chassis management controller 269CMC corrected machine check 270CMS {configuration,content,course} management system 271CMI control {management,method} interface 272CMOS complementary metal-oxide-semiconductor 273CMP chip multi-processing 274CMS content management system 275CMYK cyan magenta yellow black 276CN {common,canonical} name 277CNC computer numerical control 278CNR carrier-to-noise ratio 279COA change of authority 280COF current operating frequency 281COFDM coded orthogonal frequency division multiplexing 282COFF common object file format 283COM component object model 284COM computer on module 285COMA cache-only memory architecture 286CORBA common object request broker architecture 287COS class of service 288COW copy-on-write 289CP continuous pilot 290CPA chosen-plaintext attack 291CPB core performance boost 292CPC central processor complex 293CPC cpu performance counters 294CPE common phase error 295CPE common platform enumeration 296CPER common platform error record 297CPG clock pulse generator 298CPI cycles per instruction 299CPL current privilege level 300CPLD complex programmable logic device 301CPP C preprocessor 302CPS characters per second 303CPS continuation-passing style 304CPT command pass through 305CPU central processing unit 306CR carriage return 307CRC cyclic redundancy check 308CRL carrier recovery loop 309CRLF carriage return line feed 310CSU C start up 311CRT cathode ray tube 312CRTP curiously recurring template pattern 313CRUD create, read, update, and delete 314CS cable select 315CS chip select 316CS code segment 317CS computer science 318CSDL {common,conceptual} schema definition language 319CSI channel state information 320CSI common system interface 321CSMA carrier sense multiple access 322CSMA/CA carrier sense multiple access with collision avoidance 323CSMA/CD carrier sense multiple access with collision detection 324CSP communicating sequential processes 325CSP content security policy 326CSP constrain satisfaction problems 327CSP cryptographic service provider 328CSR control [and] status registers 329CSRG Computer Systems Research Group 330CSS cascading style sheets 331CST common spanning tree 332CSV comma-separated values 333CTF compact c type format 334CTM close to metal 335CTR counter [mode] 336CTS clear to send 337CTS common type system 338CUA common user access 339CUT coordinated universal time 340CV control voltage 341CVE common vulnerabilities and exposures 342CVS Concurrent Versions System 343DA destination address 344DAA distributed application architecture 345DAAP digital audio access protocol 346DAB digital audio broadcasting 347DAC digital [to] analog converter 348DAC discretionary access control 349DAD duplicate address detection 350DANE DNS-based Authentication of Named Entities 351DAO disk at once 352DAP Directory Access Protocol 353DAT digital audio tape 354DAT dynamic acceleration technology 355DB database 356DBA database administrator 357DBA dynamic bandwidth allocation 358DBB data bus buffer 359DBC design by contract 360DBL dynamic buffer limiting 361DBMS database management system 362DBS database server 363DC data center 364DC direct current 365DCC Direct Client-to-Client 366DCC direct cable connect 367DCD data carrier detect 368DCE data control equipment 369DCE distributed computing environment 370DCIM data center infrastructure management 371DCIM digital camera images 372DCL Digital Command Language 373DCOM distributed component object model 374DCOP Desktop COmmunication Protocol 375DCS data collection systems 376DCT discrete cosine transform 377DCU data cache unit 378DDC display data channel 379DDE dynamic data exchange 380DDI device drivers interface 381DDK device driver kit 382DDL data description language 383DDR double data rate 384DDS direct digital sound 385DDWG Digital Display Working Group 386DE debugging extensions 387DE desktop environment 388DEA data encryption algorithm 389DEC Digital Equipment Corporation 390DEK data encryption key 391DEP data execution prevention 392DER distinguished encoding rules 393DES Data Encryption Standard 394DF don't fragment 395DFA deterministic finite automaton 396DFC data flow control 397DFS depth first search 398DFS distributed file system 399DFSAN Data Flow Sanitizer 400DFT diagnostic function test 401DFT discrete Fourier transform 402DGL data generation language 403DGEMM double precision general matrix multiply 404DH Diffie-Hellman 405DHCP Dynamic Host Configuration Protocol 406DIA dedicated Internet access 407DIB device independent bitmap 408DIFS distributed inter-frame space 409DIMM dual inline memory module 410DIRT design in real time 411DKI driver/kernel interface 412DL diode logic 413DL discrete logarithm 414DL download 415DLCI data link connection identifier 416DLE data link escape 417DLL dynamic link library 418DLNA digital living network alliance 419DLP discrete logarithm problem 420DMA direct memory access 421DMI desktop management interface 422DMS document management system 423DMT discrete multitone modulation 424DMU data management layer 425DNARD Digital network appliance reference design 426DND drag and drop 427DNLC directory name lookup cache 428DNS Domain Name System 429DNSSEC DNS Security Extensions 430DOE distributed object environment 431DOF data over fibre 432DOM document object model 433DOS denial of service 434DOS disk operating system 435DP DisplayPort 436DPC deferred procedure call 437DPCM differential pulse code modulation 438DPD dead peer detection 439DPI deep packet inspection 440DPI dots per inch 441DPL descriptor privilege level 442DPS Display PostScript 443DPST display power savings technology 444DRAAS disaster recovery as a service 445DRAM dynamic random access memory 446DRBG deterministic random bit generator 447DRI direct rendering infrastructure 448DRM digital rights management 449DRM direct rendering manager 450DRRS display refresh rate switching 451DS debug store 452DS differentiated services 453DS9000 DeathStation 9000 454DS9K DeathStation 9000 455DSA digital signature algorithm 456DSAP destination service access point 457DSB double-sideband modulation 458DSCP differentiated services code point 459DSDT differentiated system descriptor table 460DSF device special file 461DSL dataset and snapshot layer 462DSL digital subscriber line 463DSL domain specific language 464DSLAM digital subscriber line access multiplexer 465DSN delivery status notification 466DSO dynamic shared object 467DSP digital signal processor 468DSSS direct sequence spread spectrum 469DTB device tree blob 470DTC device tree compiler 471DTD document type definition 472DTE data terminal equipment 473DTE dumb terminal emulator 474DTL diode-transistor logic 475DTLS datagram transport layer security 476DTS device tree source 477DTS digital thermal sensor 478DUT device under test 479DVB digital video broadcasting 480DVCS distributed version control system 481DVD digital versatile disc 482DVFS dynamic voltage and frequency scaling 483DVI device independent 484DVI Digital Visual Interface 485DVR digital video recorder 486E-XER extended XML encoding rules 487EABI embedded-application binary interface 488EAI Email Address Internationalization 489EAI Enterprise Application Integration 490EAP Extensible Authentication Protocol 491EAPOL EAP over Lan 492EAV entity-attribute-value model 493EAV ethernet audio/video bridging 494EBCDIC Extended Binary Coded Decimal Interchange Code 495EBDA Extended BIOS Data Area 496EBNF extended backus-naur form 497EBR extended boot record 498EC elliptic curve 499ECC elliptic curve cryptography 500ECC error correction code 501ECDH elliptic curve Diffie-Hellman 502ECDL elliptic curve discrete logarithm 503ECDLP elliptic curve discrete logarithm problem 504ECDSA elliptic curve digital signature algorithm 505ECL emitter-coupled logic 506ECN explicit congestion notification 507ECP enhanced capability port 508ECS enhanced chip set 509ECS extended configuration space 510EDAC error detection and correction 511EDAT enhanced dynamic acceleration technology 512EdDSA Edwards curve digital signature algorithm 513EDGE explicit data graph execution 514EDID extended display identification data 515EDO extended data out 516EDS electronical data sheet 517EDSAC electronic delay storage automatic calculator 518EDVAC electronic discrete variable automatic computer 519EEE energy efficient ethernet 520EEPROM electrically erasable programmable read only memory 521EFI extensible firmware interface 522EFL emitter follower logic 523EFM eight to fourteen modulation 524EFS extent file system 525EGA Enhanced Graphics Adapter 526EGP exterior gateway protocol 527EH extension header 528EIDE enhanced IDE 529EISA extended industry standard architecture 530EINJ error injection table 531ELF executable and linking format 532ELS entry level system 533EMI electro-magnetic interference 534EMP electro-magnetic pulse 535EMR electro-magnetic radiation 536EMACS Editor MACroS 537ENIAC electronic numerical integrator and computer 538EOF end of file 539EOI end of interrupt 540EOIS end of interactive support 541EOL end of life 542EOL end of line 543EOT end of transmission 544EPIC explicitly parallel instruction computing 545EPP enhanced parallel port 546EPRML extended partial response, maximum likelihood 547EPROM erasable programmable read only memory 548EPT extended page tables 549ERC error recovery control 550ERD emergency recovery disk 551ERD entity relationship diagram 552ERE extended regular expression 553ERST error record serialization table 554ESAN Efficiency Sanitizer 555ESB enterprise service bus 556ESDI enhanced small disk interface 557ESDRAM enhanced synchronous dynamic random access memory 558ESI enclosure services interface 559ESS electronic switching system 560ESS extended service set 561ESSID extended service set identifier 562EST enhanced speedstep 563ETL extract, transform, load 564EU execution unit 565EULA end user license agreement 566FAT file allocation table 567FBRAM frame buffer random access memory 568FCIF full common intermediate format 569FCL fiber channel loop 570FCS frame check sequence 571FDC floppy disk controller 572FDD floppy disk drive 573FDDI fiber distributed data interface 574FDE full disk encryption 575FDT flattened device tree 576FEA finite element analysis 577FEC forward error correction 578FET field-effect transistor 579FF finite field 580FF form feed 581FFDH finite-field Diffie-Hellman 582FFH functional fixed hardware 583FFI foreign function interface 584FFM focus follows mouse 585FFS Fast File System 586FFS find first set 587FFT fast Fourier transform 588FG floating gate 589FHRP first hop redundancy protocol 590FHSS frequency hop spread spectrum 591FID frequency identifier 592FIFO first in, first out 593FILO first in, last out 594FIPS Federal Information Processing Standards 595FIR fast infrared 596FLOPS floating [point] operations per second 597FLOSS free/libre/open source software 598FM frequency modulation 599FMR false match rate 600FOSS free/open source software 601FPGA field programmable gate array 602FPM fast page mode 603FPR floating point register 604FPU floating point unit 605FQDN fully qualified domain name 606FRR false rejection rate 607FRU field replaceable unit 608FS file system 609FSB front side bus 610FSCK file system check 611FSF Free Software Foundation 612FSK frequency shift keying 613FSM finite-state machine 614FTA fault tree analysis 615FTL flash translation layer 616FTP File Transfer Protocol 617FTPS File Transfer Protocol Secure 618FTTH fiber to the home 619FUS fast user switching 620FWH firmware hub 621FWS folding white space 622GAL generic array logic 623GARP generic attribute registration protocol 624GAS generic address structure 625GC garbage collector 626GCM Galois counter mode 627GCR group-coded recording 628GDI Graphics Device Interface 629GDT global descriptor table 630GECOS general comprehensive operating supervisor 631GEM graphics environment manager 632GEM graphics execution manager 633GEMM general matrix multiply 634GENA general event notification architecture 635GHC Glasgow Haskell compiler 636GHES generic hardware error source 637GIC generic interrupt controller 638GID group identifier 639GIF graphics interchange format 640GLBP gateway load balancing protocol 641GMCH graphics and memory controller hub 642GNU GNU's Not Unix 643GOP graphics output protocol 644GOT global offset table 645GPE general purpose event 646GPF general protection fault 647GPG GNU Privacy Guard 648GPL [GNU] General Public License 649GPR general purpose register 650GPS generalized processor sharing 651GPT GUID partition table 652GPU graphics processing unit 653GR golden ratio 654GRE generic routing encapsulation 655GRO generic receive offload 656GSI global system interrupt 657GSO generic send offload 658GUI graphical user interface 659GUID globally unique identifier 660GVFS git virtual file system 661HA high availability 662HAL hardware abstraction layer 663HAT hashed array tree 664HATEOAS hypermedia as the engine of application state 665HBA host bus adapter 666HCF halt and catch fire 667HCI host controller interface 668HCI human-computer interaction 669HCL hardware compatibility list 670HDCP High-bandwidth Digital Content Protection 671HDD hard disk drive 672HDL hardware description language 673HDMI High-Definition Multimedia Interface 674HDTV high-definition television 675HECI host embedded controller interface 676HEST hardware error source table 677HEVC high efficiency video coding 678HF high frequency 679HFM highest frequency mode 680HFS hierarchical file system 681HID human interface device 682HKP HTTP Keyserver Protocol 683HLL high-level language 684HMA high memory area 685HMI human-machine interface 686HOOD hierarchical object oriented design 687HOTP HMAC-based one time password 688HP Hewlett-Packard 689HPC high performance computing 690HPD hot plug detection 691HPET high precision event timer 692HSM hardware security module 693HSM hierarchical storage management 694HSRP hot standby router protocol 695HT hyper-threading 696HTC hardware thermal control 697HTCC high temperature co-fired ceramic 698HTML HyperText Markup Language 699HTT hyper-threading technology 700HTTP Hypertext Transfer Protocol 701HTTPS Hypertext Transfer Protocol Secure 702HVM hardware virtual machine 703HVDS High-Voltage Differential Signaling 704HWASAN Hardware-assisted Address Sanitizer 705HZ Hertz 706I2O intelligent input/output 707IA information assurance 708IAAS infrastructure as a service 709IANA Internet Assigned Numbers Authority 710IBC iterated block cipher 711IBM International Business Machines 712IBPI international blinking pattern interpretation 713IBS instruction based sampling 714IBSS independent basic service set 715IC integrated circuit 716ICA independent computer architecture 717ICACLS integrity control access control lists 718ICB Internet Citizen's Band 719ICE in-circuit emulator 720ICE internal compiler error 721ICH I/O controller hub 722ICMP Internet Control Message Protocol 723ICT information and communications technology 724ICW initialization command word 725IDA Intel dynamic acceleration 726IDCMP Intuition direct communication message port 727IDCT inverse discrete cosine transform 728IDE integrated development environment 729IDE integrated drive electronics 730IDPS intrusion detection [and] prevention system 731IDRP inter-domain routing protocol 732IDS intrusion detection system 733IDT interrupt descriptor table 734IE Internet Explorer 735IEC International Electrotechnical Commission 736IEEE Institute of Electrical and Electronics Engineers 737IESG Internet Engineering Steering Group 738IETF Internet Engineering Task Force 739IF intermediate frequency 740IFCM isochronous flow control mode 741IFF Interchange File Format 742IFS internal field separator 743IGD Internet gateway device 744IGMP Internet Group Management Protocol 745IGP interior gateway protocol 746IHV independent hardware vendor 747IKE Internet key exchange 748ILM internal loopback mode 749ILOM integrated lights-out management 750ILP instruction level parallelism 751IM instant messaging 752IME input method editor 753IMAP Internet Message Access Protocol 754IMC integrated memory controller 755IMCR interrupt mode configuration register 756IMR interrupt mask register 757IMS information management system 758IMSI international mobile subscriber identity 759INCITS InterNational Committee for Information Technology Standards 760INODE index node 761IO input/output 762IOCTL input/output control 763IOM input/output managers 764IOMMU input/output memory management unit 765IOT Internet of Things 766IP Internet Protocol 767IP intellectual property 768IPC instructions per cycle 769IPC interprocess communication 770IPCF interprocess communication facility 771IPE integrated programming environment 772IPI intelligent peripheral interface 773IPI interprocessor interrupt 774IPL Initial Program Load 775IPL Interrupt Priority Level 776IPMB Intelligent Platform Management Bus 777IPMI Intelligent Platform Management Interface 778IPNG Internet Protocol, Next Generation 779IPS in-plane switching 780IPS intrusion prevention system 781IPSEC Internet Protocol Security 782IRC Internet Relay Chat 783IRDA infrared data association 784IRDP ICMP Router Discovery Protocol 785IRQ interrupt request 786IRQL interrupt request level 787IRR interrupt request register 788IRTF Internet Research Task Force 789IS information system 790ISA industry standard architecture 791ISA instruction set architecture 792ISE instant secure erase 793ISDN integrated services digital network 794ISI inter-symbol interference 795ISL initial system load 796ISM industrial, scientific, [and] medical 797ISMS information system management system 798ISN initial serial number 799ISO International Standards Organization 800ISOC Internet Society 801ISP Internet service provider 802ISR in-service register 803ISR interrupt service routine 804IST internal spanning tree 805IST interrupt stack table 806ISV independent software vendor 807IT information technology 808ITB Intel Turbo Boost 809ITIL information technology infrastructure library 810ITP in-target probe 811ITSM IT service management 812IV initialization vector 813IVT interrupt vector table 814JBOD just a bunch of disks 815JCL Job Control Language 816JFET junction [gate] field-effect transistor 817JIT just in time 818JPEG Joint Photographic Experts Group 819JRE Java Runtime Environment 820JSON JavaScript Object Notation 821JTAG joint test action group 822KASLR kernel address space layout randomization 823KB keyboard 824KB kilobyte 825KBD keyboard 826KBD kilobaud 827KCS keyboard controller style 828KLOC thousand lines of code 829KMS kernel-mode setting 830KPI kernel programming interface 831KVA kernel virtual address 832KVM kernel virtual machine 833KVM kernel virtual memory 834KVM keyboard, video, [and] mouse 835L2CAP link layer control and adaptation protocol 836LAG link aggregation group 837LAMP Linux Apache MySQL {Perl,PHP,Python} 838LAN local area network 839LAPIC local advanced programmable interrupt controller 840LAR load access rights 841LBA logical block addressing 842LBNF labeled backus-naur form 843LBS location-based service 844LCD liquid crystal display 845LCP link control protocol 846LDA local delivery agent 847LDAP Lightweight Directory Access Protocol 848LDR light-dependent resistor 849LDT local descriptor table 850LE logical extent 851LED light emitting diode 852LELL low energy link layer 853LER label edge router 854LF line feed 855LF low frequency 856LFM lowest frequency mode 857LFN long file names 858LFO low-frequency oscillation 859LFS log-structured file system 860LFU least frequently used 861LHP loop heat pipe 862LIF logical interchange format 863LIFO last in, first out 864LILO LInux LOader 865LILO last in, last out 866LINT local interrupt 867LIR local Internet registry 868LISP LISt Processor 869LISP Locator/ID Separation Protocol 870LKM {Linux,loadable} kernel module 871LKML Linux kernel mailing list 872LL load linked 873LL/SC load linked/store conditional 874LLC logical link control 875LLD low-level design 876LLDD low-level design document 877LLDP link layer discovery protocol 878LLF low level format 879LLMNR link-local multicast name resolution 880LLVM Low Level Virtual Machine 881LM long mode 882LMCE local machine check exception 883LMI local management interface 884LMM link management mode 885LMP link management protocol 886LNO loop nest optimization 887LOC lines of code 888LOM lights-out management 889LPE Linux performance events 890LPC low pin count 891LPS local positioning system 892LRC longitudinal redundancy check 893LRM left-to-right mark 894LRO left-to-right override 895LRU least recently used 896LS link state 897LSAN Leak Sanitizer 898LSB Linux standards base 899LSB least significant {bit,byte} 900LSI large scale integration 901LSL load segment limit 902LSM log structured merge 903LSN Large Scale NAT 904LSN log sequence number 905LSO large send offload 906LSR label switch router 907LTCC low temperature co-fired ceramic 908LTO linear tape-open 909LTO link time optimization 910LTR left to right 911LTR load task register 912LTR letter(-sized paper) 913LTS long term support 914LUA Lua Uppercase Accident 915LUN logical unit number 916LV logical volume 917LVM logical volume management 918LVT local vector table 919LVDS Low-Voltage Differential Signaling 920LWP light-weight process 921LZSS Lempel Ziv Storer Szymanski 922LZW Lempel Ziv Welch 923MAB MAC authentication bypass 924MAC mandatory access control 925MAC {media,medium} access control 926MAC message authentication {check,code} 927MADT multiple APIC descriptor table 928MAMR microwave-assisted magnetic recording 929MB megabyte 930MBA multi-boot agent 931MBR master boot record 932MBS megabits per second 933MC memory controller 934MCA machine check architecture 935MCA MicroChannel architecture 936MCC multiversion concurrency control 937MCE machine check exception 938MCGA Multi-Color Graphics Array 939MCH memory controller hub 940MCLAG multi-chassis link aggregation group 941MCM multi-chip module 942MCQ memory controlled queue 943MD machine-dependent 944MD MiniDisc 945MD-SAL model-driven service abstraction layer 946MDA mail delivery agent 947MDA Monochrome Display Adapter 948MDC Management Data Clock 949MDI Medium Dependent Interface 950MDI-X Medium Dependent Interface Crossover 951MDIO Management Data Input/Output 952MDMX MIPS Digital Media eXtension 953MDRAM multibank dynamic random access memory 954MESI modified, exclusive, shared, invalid 955MFC merge from current 956MFC Microsoft Foundation Classes 957MFM modified frequency modulation 958MFU most frequently used 959MGCP media gateway control protocol 960MHU message handling unit 961MI machine-independent 962MI machine interface 963MIB management information base 964MIC message integrity {check,code} 965MID mobile Internet device 966MIDI musical instrument digital interface 967MIF management information format 968MII media independent interface 969MIM man in the middle 970MIMD multiple instruction, multiple data 971MIME Multipurpose Internet Mail Extensions 972MIMO multiple input multiple output 973MIPS million instructions per second 974MIPS Microprocessor without Interlocked Pipeline Stages 975MISD multiple instruction, single data 976MIT Massachusetts Institute of Technology 977MITM man in the middle 978ML machine language 979ML machine learning 980ML mailing list 981ML markup language 982ML maximum likelihood 983MLAG multi-chassis link aggregation group 984MLC multi-level cell 985MLD multicast listener discovery 986MLHP micro loop heat pipe 987MMF multi-mode fiber 988MMIC monolithic microwave integrated circuit 989MMIO memory mapped input/output 990MMORPG massive multiplayer online role playing game 991MMRP multiple MAC registration protocol 992MMU memory management unit 993MMX matrix math extension 994MMX multimedia extension 995MMX multiple math extension 996MO magneto-optical 997MOESI modified, owned, exclusive, shared, invalid 998MOF maximum operating frequency 999MOSFET metal-oxide-semiconductor field-effect transistor 1000MOSI modified, owned, shared, invalid 1001MP multi-platform 1002MP multiplayer 1003MP {multiprocessing,multiprocessor} 1004MPEG moving picture experts group 1005MPI message passing interface 1006MPLS Multiprotocol Label Switching 1007MPP massively parallel processor 1008MPS memory pool system 1009MPS multiprocessor specification 1010MQTT Message Queuing Telemetry Transport 1011MR modem ready 1012MRO method resolution order 1013MRP multiple registration protocol 1014MRU most recently used 1015MS Microsoft 1016MSAN Memory Sanitizer 1017MSB most significant {bit,byte} 1018MSC message sequence chart 1019MSE mean square error 1020MSF minutes seconds frames 1021MSI message signaled interrupt 1022MSI modified, shared, invalid 1023MSR {machine state,model-specific} register 1024MSS maximum segment size 1025MSTP Multiple Spanning Tree Protocol 1026MT machine translation 1027MTA mail transfer agent 1028MTBF mean time between failures 1029MTP media transfer protocol 1030MTRR memory type range register 1031MTTF mean time to failure 1032MTU maximum transmission unit 1033MUA mail user agent 1034MUD multi-user domain 1035MVCC multiversion concurrency control 1036MVR multicast VLAN registration 1037MVRP multiple VLAN registration protocol 1038MWE module width encoding 1039MX mail exchange 1040NACK negative acknowledgement 1041NAK negative acknowledgement 1042NAN neighbor awareness networking 1043NAN not a number 1044NAPT Network Address Port Translation 1045NAS network attached storage 1046NAT network address translation 1047NAV network allocation vector 1048NC numerical control 1049NC-SI network controller sideband interface 1050NCO numerically-controlled oscillator 1051NCP Network Control Protocol 1052NCSI network connectivity status indicator 1053NCQ native command queuing 1054ND neighbor discovery 1055NDFA nondeterministic finite automaton 1056NDIS network driver interface specification 1057NE numeric error 1058NEWS Network extensible Window System 1059NFA nondeterministic finite automaton 1060NFC near-field communication 1061NFCI no functional change intended 1062NFS network file system 1063NFV network function virtualization 1064NIA next instruction address 1065NIC network information center 1066NIC network interface card 1067NIDS network intrusion detection system 1068NIP network interface protocol 1069NIPS network intrusion prevention system 1070NIS network information service 1071NIST National Institute of Standards and Technology 1072NLS native language support 1073NMI non-maskable interrupt 1074NNTP Network News Transfer Protocol 1075NOC network operations center 1076NOP no operation 1077NOS network operating system 1078NP nondeterministic polynomial time 1079NRND not recommended for new designs 1080NRZ non-return to zero 1081NSA nation-state adversary 1082NSA no such agency 1083NSA National Security Agency 1084NTM non-deterministic Turing machine 1085NTP Network Time Protocol 1086NUMA non-uniform memory access 1087NURBS non-uniform rational basis spline 1088NVMM NetBSD Virtual Machine Monitor 1089NVMM non-volatile main memory 1090NVRAM non-volatile random access memory 1091NW not write-through 1092NX no execute 1093OAEP optimal asymmetric encryption padding 1094OAM operations, administration, and {management,maintenance} 1095OBO off by one 1096OBOE off by one error 1097OCL object constraint language 1098OCR optical character recognition 1099ODE offline device environment 1100ODI open data-link interface 1101ODM object data manager 1102ODCM on-demand clock modulation 1103ODT on-die termination 1104OEM original equipment manufacturer 1105OFB output feedback 1106OFDM orthogonal frequency division multiplexing 1107OFET organic field-effect transistor 1108OLAP online analytical processing 1109OLE object linking and embedding 1110OLTP online transaction processing 1111ONFI open nand flash interface 1112OO OpenOffice 1113OO object oriented 1114OOB out of band 1115OOE out of order execution 1116OOM out of memory 1117OOO OpenOffice.org 1118OOP object oriented programming 1119OOPS object oriented programming systems 1120OOSE object oriented software engineering 1121OPM operations per minute 1122OPS operations per second 1123OQL Object Query Language 1124ORB object request broker 1125ORM object-relational mapping 1126OS operating system 1127OSD object-based storage device 1128OSD open source definition 1129OSF open software foundation 1130OSI Open Source Initiative 1131OSI open systems interconnection 1132OSPF open shortest path first 1133OSPM OS power management 1134OSS open sound system 1135OSS open source software 1136OSVW operating system visible workarounds 1137OTP one time password 1138OTP open telecom platform 1139OU organizational unit 1140OUI organizationally unique identifier 1141OWASP Open Web Application Security Project 1142OWL Web Ontology Language 1143P2P PCI to PCI 1144P2P peer to peer 1145PA phase accumulator 1146PA physical address 1147PAAS platform as a service 1148PAC phase-amplitude converter 1149PAE physical address extension 1150PAGP port aggregation protocol 1151PAL phase alternating line 1152PAL programmable array logic 1153PAM pluggable authentication modules 1154PAM pulse amplitude modulation 1155PAP password authentication protocol 1156PAT page attribute table 1157PAT port address translation 1158PATA parallel ATA 1159PAX portable archive exchange 1160PBE pending break encoding 1161PBE programming by example 1162PBR partition boot record 1163PBX private branch exchange 1164PC personal computer 1165PC program counter 1166PCB printed circuit board 1167PCB process control block 1168PCB Protocol Control Block 1169PCBC propagating cipher block chaining 1170PCC Portable C Compiler 1171PCD page-level cache disable 1172PCE path computation element 1173PCE performance-monitor counter enable 1174PCEP Path Computation Element Protocol 1175PCH platform controller hub 1176PCI peripheral component interconnect 1177PCM phase change memory 1178PCM pulse code modulation 1179PCMCIA Personal Computer Memory Card International Association 1180PCP Port Control Protocol 1181PD public domain 1182PDA personal digital assistant 1183PDA pushdown automaton 1184PDAG propositional directed acyclic graph 1185PDB power distribution board 1186PDF portable document format 1187PDM pulse-duration modulation 1188PDN pull-down network 1189PDP page {descriptor,directory} page 1190PDS product data sheet 1191PDU protocol data unit 1192PE protection enable 1193PE provider edge 1194PEAP Protected EAP 1195PECI platform environment control interface 1196PEP protocol extension protocol 1197PER packed encoding rules 1198PFS perfect forward secrecy 1199PGAS partitioned global address space 1200PGE page global enable 1201PGP Pretty Good Privacy 1202PHB PCI host bridge 1203PHP PHP: Hypertext Preprocessor 1204PIC performance instrumentation counters 1205PIC position independent code 1206PIC programmable interrupt controller 1207PICNIC problem in chair, not in computer 1208PID process id 1209PIE position independent executable 1210PIL Priority Interrupt Level 1211PIM personal information manager 1212PIM platform-independent model 1213PIO programmed input/output 1214PIPT physically indexed, physically tagged 1215PIQ prefetch input queue 1216PIT programmable interrupt timer 1217PIV personal identity verification 1218PIX Private Internet eXchange 1219PKCS public-key cryptography standards 1220PKI public key infrastructure 1221PLC programmable logic controller 1222PLD programmable logic device 1223PLL phase locked loop 1224PLRU pseudo LRU 1225PLTM package level thermal management 1226PM power management 1227PM {phase,pulse} modulation 1228PMC performance monitoring counters 1229PME power management event 1230PMEG page map entry group 1231PMI performance monitoring infrastructure 1232PMI platform management interrupt 1233PMIC power management integrated circut 1234PMIO port-mapped input/output 1235PMT photo-multiplier tube 1236PMU performance monitoring units 1237PMU power management unit 1238PNG portable network graphics 1239PNP plug and play 1240POE power over ethernet 1241POF probability of failure 1242POP Post Office Protocol 1243POP power on password 1244POR plan of record 1245POSIX Portable Operating System Interface [for Unix] 1246POST power on self test 1247POTS plain old telephone system 1248POWER Performance Optimization With Enhanced RISC 1249POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1250PP pair programming 1251PPB PCI [to] PCI bridge 1252PPC PowerPC 1253PPC Power Performance Computing 1254PPI pixels per inch 1255PPM pages per minute 1256PPP Point-to-Point Protocol 1257PPPOA Point-to-Point Protocol over ATM 1258PPPOE Point-to-Point Protocol over Ethernet 1259PPR processor programming reference 1260PPT powerpoint 1261PPT punched paper tape 1262PPU physics processing unit 1263PRAM Parameter RAM 1264PRBS pseudorandom bit sequence 1265PRG pseudorandom generator 1266PRF pseudorandom function [family] 1267PRML partial response, maximum likelihood 1268PRN pseudorandom {noise,number} 1269PRNG pseudorandom number generator 1270PROM programmable read only memory 1271PRP pseudorandom permutation 1272PRU Programmable Realtime Unit 1273PS PostScript 1274PSD power spectral density 1275PSE page size extensions 1276PSK phase shift keying 1277PSK pre-shared key 1278PSTN public switched telephone network 1279PSW program status word 1280PTE page table entry 1281PTLA pseudo top level aggregator 1282PTP page table page 1283PTV perceived target value 1284PU processing unit 1285PUC personal unblocking code 1286PUN physical unit number 1287PV physical volume 1288PVC permanent virtual circuit 1289PVG physical volume group 1290PVI protected-mode virtual interrupt 1291PVRST Per-VLAN rapid spanning tree 1292PVST Per-VLAN Spanning Tree 1293PWM pulse width modulation 1294PXE preboot execution environment 1295QA quality assurance 1296QAM quadrature amplitude modulation 1297QAM quality assurance management 1298QBE query by example 1299QC quality control 1300QDI quasi delay insensitive 1301QCIF quarter common intermediate format 1302QOI quality of implementation 1303QOI quick order interface 1304QOS quality of service 1305QVL qualified vendor list 1306R/O read only 1307R/W read/write 1308RA receiver address 1309RA remote assistance 1310RA resource affinity 1311RA router advertisement 1312RAD rapid application development 1313RADIUS remote authentication dial-in user service 1314RAID redundant array of {independent,inexpensive} disks 1315RAM random access memory 1316RAS reliability, availability and serviceability 1317RAS remote access service 1318RAS restartable atomic sequence 1319RAS row address strobe 1320RBF radial basis function 1321RBNF routing backus-naur form 1322RBT red-black tree 1323RC release candidate 1324RC remote control 1325RC run commands 1326RCS Revision Control System 1327RCS revision control system 1328RCU read, copy, update 1329RDB Rigid Disk Block 1330RDBMS relational database management system 1331RDF Resource Description Framework 1332RDM relational data model 1333RDMA remote direct memory access 1334RDP remote desktop protocol 1335RDRAM Rambus DRAM 1336RE regular expression 1337REPL read, evaluate, print, loop 1338REST representational state transfer 1339RF radio frequency 1340RFB remote frame buffer 1341RFI radio frequency interference 1342RFO request for ownership 1343RFU reserved for future use 1344RGB red green blue 1345RGBA red green blue alpha 1346RGMII reduced gigabit media independent interface 1347RH read hit 1348RHEL Red Hat Enterprise Linux 1349RHL Red Hat Linux 1350RIB routing information base 1351RIFF Resource Interchange File Format 1352RIP Raster Image Processor 1353RIP Routing Information Protocol 1354RIR regional Internet registry 1355RISC reduced instruction set {computer,computing} 1356RKM ROM Kernel Manual 1357RLE run length encoding 1358RLL run length limited 1359RLO right-to-left override 1360RM read miss 1361RMCP Remote Management Control Protocol 1362RMI remote method invocation 1363RMO Relaxed Memory Ordering 1364RMPM rapid memory power management 1365RMS root mean square 1366RMW read, modify, write 1367RNG random number generator 1368ROM read only memory 1369RPC remote procedure call 1370RPG Report Program Generator 1371RPKI resource PKI 1372RPL requested privilege level 1373RPM revolutions per minute 1374RPN reverse Polish notation 1375RPVST Rapid Per-VLAN Spanning Tree 1376RR random replacement 1377RR round robin 1378RS relay station 1379RSA Rivest, Shamir, [and] Adleman 1380RSIP Realm Specific IP 1381RSN Robust Secure Network 1382RSS really simple syndication 1383RSS Receive Side Scaling 1384RSS residual sum of squares 1385RSTP Rapid Spanning Tree Protocol 1386RT real time 1387RTC real time clock 1388RTC real time computing 1389RTF rich text format 1390RTL register transfer language 1391RTL resistor-transistor logic 1392RTL right to left 1393RTOS real time operating system 1394RTP Real-time Transport Protocol 1395RTS request to send 1396RTT round trip time 1397RUP rational unified process 1398RW Rabin-Williams 1399RWM read-write memory 1400RX {receive,receiver} 1401S/PDIF Sony/Philips Digital Interface Format 1402SA security advisory 1403SA security association 1404SA source address 1405SA structured analysis 1406SAAS software as a service 1407SABRE Semi-automated business research environment 1408SACD super audio compact disc 1409SAD security association database 1410SAF-TE SCSI accessed fault-tolerant enclosure 1411SAGE Semi-automated ground environment 1412SAL {service,system} abstraction layer 1413SAM serial access memory 1414SAM sum addressed memory 1415SAML security assertion markup language 1416SAN storage area network 1417SAP service access point 1418SAPIC streamlined advanced programmable interrupt controller 1419SASD structured analysis, structured design 1420SASI Shugart Associates System Interface 1421SASL simple authentication [and] security layer 1422SATA serial advanced technology attachment 1423SAX simple API for XML 1424SB sound blaster 1425SBSA server base system architecture 1426SBU standard build unit 1427SC store conditional 1428SCA source code analyzer 1429SCADA supervisory control and data acquisition 1430SCC single chip cloud 1431SCC source code control 1432SCCP skinny call control protocol 1433SCCS Source Code Control System 1434SCI scalable coherent interface 1435SCI system control interrupt 1436SCIM smart common input method 1437SCM software configuration management 1438SCM source code management 1439SCM storage-class memory 1440SCO synchronous connection orientated 1441SCP secure copy 1442SCP system control processor 1443SCPI system control and power interface 1444SCSI Small Computer System Interface 1445SCTP Stream Control Transmission Protocol 1446SDDC software defined data center 1447SDEI software delegated exception interface 1448SDI symbol deinterleave 1449SDK software development kit 1450SDL Simple Declarative Language 1451SDL Simple Direct-media Layer 1452SDLC {software,system,systems} development life cycle 1453SDN software defined networking 1454SDP Session Description Protocol 1455SDR software defined radio 1456SDRAM synchronous dynamic random access memory 1457SDS software defined storage 1458SDT syntax-directed translation 1459SEA synchronous external abort 1460SEGV segmentation violation 1461SED self-encrypting drive 1462SED stream editor 1463SEMB serial ATA enclosure management bridge 1464SEO search engine optimization 1465SES SCSI enclosure services 1466SFC sequential function chart 1467SFI simple firmware interface 1468SFI software fault isolation 1469SFTP SSH File Transfer Protocol 1470SFTP Serial File Transfer Protocol 1471SFTP Simple File Transfer Protocol 1472SGI Silicon Graphics, Inc 1473SGI software generated interrupt 1474SGMII serial gigabit media independent interface 1475SGPIO serial general purpose input/output 1476SGRAM synchronous graphics random access memory 1477SHA secure hash algorithm 1478SICP structure and interpretation of computer programs 1479SIDH supersingular isogeny Diffie-Hellman 1480SIEM security information and event management 1481SIF source input format 1482SIFS short inter-frame space 1483SIM subscriber identity module 1484SIMD single instruction, multiple data 1485SIMM single inline memory module 1486SIP Session Initiation Protocol 1487SIR signal-to-interference ratio 1488SIR slow infrared 1489SISD single instruction, single data 1490SLAAC stateless address auto-configuration 1491SLC single-level cell 1492SLDRAM synchronous-link dynamic random access memory 1493SLED single large expensive disk 1494SLI scalable link interface 1495SLI scan-line interleave 1496SLIC system license internal code 1497SLOC source lines of code 1498SLRU segmented LRU 1499SMA smart memory access 1500SMAF system management action field 1501SMAP Simple Mail Access Protocol 1502SMAP supervisor mode access prevention 1503SMART self-monitoring analysis and reporting technology 1504SMB Server Message Block 1505SMB system management bus 1506SMBIOS System Management BIOS 1507SMC system management controller 1508SMD storage module device 1509SMEP supervisor mode execution protection 1510SMF single mode fiber 1511SMI structure of management information 1512SMI system management interrupt 1513SMM system management mode 1514SMP serial management protocol 1515SMP symmetric multiprocessing 1516SMR shingled magnetic recording 1517SMR state machine replication 1518SMT simultaneous multithreading 1519SMTP Simple Mail Transfer Protocol 1520SMU system management unit 1521SNA systems network architecture 1522SNAP Sub-Network Access Protocol 1523SNIA Storage Networking Industry Association 1524SNMP Simple Network Management Protocol 1525SNR signal-to-noise ratio 1526SOA service oriented architecture 1527SOAP Simple Object Access Protocol 1528SOC system on chip 1529SOF start of frame 1530SOH start of header 1531SOHO small office/home office 1532SOL serial over LAN 1533SOM system on module 1534SP service pack 1535SP stack pointer 1536SPA storage pool allocator 1537SPAN switched port analyzer 1538SPARC scalable processor architecture 1539SPARQL SPARQL Protocol and RDF Query Language 1540SPD security policy database 1541SPD serial presence detect 1542SPDIF Sony/Philips digital interface format 1543SPI serial peripheral interface 1544SPI stateful packet inspection 1545SPL system interrupt priority level 1546SPL spinlock 1547SPMD single process, multiple data 1548SPR special purpose register 1549SPT sectors per track 1550SQA software quality assurance 1551SQCIF sub quarter common intermediate format 1552SQL Structured Query Language 1553SRAM static random access memory 1554SRC sample rate conversion 1555SRP SCSI RDMA protocol 1556SRR shaped round robin 1557SRTP Secure Real-time Transport Protocol 1558SS self-snoop 1559SS stack segment 1560SSA static single assignment 1561SSAP source service access point 1562SSB single-sideband modulation 1563SSC spread spectrum clock 1564SSD solid state drive 1565SSE streaming SIMD extensions 1566SSFDC solid state floppy disc card 1567SSH secure shell 1568SSI server side includes 1569SSID service set identifier 1570SSTP secure socket tunneling protocol 1571SSL secure sockets layer 1572SSP stack smashing protection 1573STC software thermal control 1574STD state transition diagram 1575STM software transactional memory 1576STOMP Streaming Text Oriented Messaging Protocol 1577STP Spanning Tree Protocol 1578STP shielded twisted pair 1579STRG spanning tree root guard 1580SUN Stanford University Network 1581SUS Single Unix Specification 1582SUT system under test 1583SVC switched virtual circuit 1584SVG scalable vector graphics 1585SVGA Super Video Graphics Array 1586SVI {switch,switched} virtual interface 1587SVM secure virtual machine 1588SVM support vector machine 1589SVR System V Release 1590SVS Separate Virtual Space 1591SWF Shockwave Flash 1592SWIG simplified wrapper [and] interface generator 1593SYR symbol timing recovery 1594TA test assertion 1595TA transmitter address 1596TACACS terminal access controller access-control system 1597TAI international atomic time 1598TAO track at once 1599TAOCP The Art of Computer Programming 1600TAP Test Anything Protocol 1601TAS test and set 1602TB terabyte 1603TBNF transitional backus-naur form 1604TCB trace capture buffer 1605TCB trusted computing base 1606TCC thermal control circuit 1607TCL tool command language 1608TCP Transmission Control Protocol 1609TCQ tagged command queueing 1610TDC time [to] digital converter 1611TDD test-driven development 1612TDD time division duplex 1613TDM time division multiplexing 1614TDMA time division multiple access 1615TDOA time difference of arrival 1616TDP thermal design {point,power} 1617TDR time-domain reflectometry 1618TECO Text Editor and Corrector 1619TFT thin film transistor 1620TFTP Trivial File Transfer Protocol 1621TIAS try it and see 1622TIFF tagged image file format 1623TITS try it to see 1624TK temporal key 1625TKIP Temporal Key Integrity Protocol 1626TLA top level aggregator 1627TLB translation lookaside buffer 1628TLD top level domain 1629TLER time-limited error recovery 1630TLI transport layer interface 1631TLS thread local storage 1632TLS transport layer security 1633TM Turing machine 1634TM thermal monitor 1635TMG transmogrifier 1636TMDS transition minimized differential signaling 1637TMO timeout 1638TOD time of day 1639TOE TCP offload engine 1640TOFU trust on first use 1641TOS terms of service 1642TOS trusted operating system 1643TOS type of service 1644TOTP time-based one time password 1645TP transaction processing 1646TPI tracks per inch 1647TPM transactions per minute 1648TPM trusted platform module 1649TPR task priority register 1650TPS transactions per second 1651TPS transmission parameters signaling 1652TR task register 1653TR token ring 1654TRL timing recovery loop 1655TRNG true random number generator 1656TS terminal services 1657TS time series 1658TS time stamp 1659TS transport stream 1660TSAN Thread Sanitizer 1661TSC time stamp counter 1662TSD time stamp disable 1663TSDB time series database 1664TSL test, set, lock 1665TSO time sharing option 1666TSO TCP segmentation offload 1667TSO Total Store Ordering 1668TSP Time-Stamp Protocol 1669TSP Tunnel Setup Protocol 1670TSP time synchronization protocol 1671TSP traveling salesman problem 1672TSS task state segment 1673TSV tab-separated values 1674TTL time to live 1675TTL transistor-transistor logic 1676TTM translation table maps 1677TTY teletype 1678TUI {terminal,text-based,textual} user interface 1679TX {transmit out,transmitter} 1680TXG transaction group 1681TZ time zone 1682UAC user {access,account} control 1683UAF use-after-free 1684UART universal asynchronous receiver/transmitter 1685UAT user acceptance testing 1686UB undefined behavior 1687UBSAN Undefined Behavior Sanitizer 1688UC uncacheable 1689UCS uniform-cost search 1690UCS unified computing system 1691UCS universal coded character set 1692UDI uniform driver interface 1693UDMA ultra DMA 1694UDO ultra density optical 1695UDP User Datagram Protocol 1696UEFI unified extensible firmware interface 1697UFO UDP fragmentation offload 1698UFS Unix File System 1699UGA universal graphics adapter 1700UI unit interval 1701UI user interface 1702UICC universal integrated circuit card 1703UID unique identifier 1704UID user identifier 1705UL upload 1706UMA uniform memory access 1707UMA upper memory area 1708UMB upper memory block 1709UML unified modeling language 1710UMPC ultra-mobile PC 1711UPNP universal plug and play 1712UPS uninterruptible power supply 1713URI uniform resource identifier 1714URL uniform resource locator 1715URN uniform resource name 1716USART universal synchronous/asynchronous receiver/transmitter 1717USB universal serial bus 1718USWC uncacheable speculative write combining 1719UT unit test 1720UTC coordinated universal time 1721UTF unicode transformation formats 1722UTP unshielded twisted pair 1723UTS UNIX time-sharing 1724UUCP Unix-to-Unix Copy Protocol 1725UUID universally unique identifier 1726UUOC useless use of cat 1727UUT unit under test 1728UX user experience 1729VA vertical alignment 1730VA virtual address 1731VA volt-ampere 1732VAX virtual address extension 1733VB Visual Basic 1734VBR volume boot record 1735VCA variable-gain amplifier 1736VCC common collector voltage 1737VCCP virtual chassis control protocol 1738VCF voltage-controlled filter 1739VCM virtual channel memory 1740VCO voltage-controlled oscillator 1741VCP virtual chassis port 1742VCS version control system 1743VDPAU Video Decode and Presentation API for Unix 1744VES virtual execution system 1745VESA Video Electronics Standards Association 1746VFO variable-frequency oscillator 1747VFS virtual file system 1748VG volume group 1749VGA Video Graphics Array 1750VHDCI very high density cable interconnect 1751VID {VLAN,voltage level} identifier 1752VIM Vi IMproved 1753VIPT virtually indexed, physically tagged 1754VIVT virtually indexed, virtually tagged 1755VLAN virtual local area network 1756VLD variable-length decoding 1757VLIW very long instruction word 1758VLSI very large scale integration 1759VLSM variable length subnet mask 1760VM virtual {machine,memory} 1761VME virtual mode extension 1762VMX vector multimedia extensions 1763VMX virtual machine extensions 1764VNC virtual network computing 1765VOD video on demand 1766VPD vital product data 1767VPN virtual private network 1768VPWS virtual private wire service 1769VR virtual reality 1770VRAM video random access memory 1771VRF virtual routing and forwarding 1772VRM voltage regulator module 1773VROC Virtual RAID On CPU 1774VRRP Virtual Router Redundancy Protocol 1775VSTP VLAN Spanning Tree Protocol 1776VTP VLAN Trunking Protocol 1777VXFS Veritas file system 1778VXVM Veritas volume manager 1779W watt 1780W3C World Wide Web Consortium 1781WAFL write anywhere file layout 1782WAMP Web Application Messaging Protocol 1783WAN wide area network 1784WAP Wireless Application Protocol 1785WAP wireless access point 1786WDM Windows Driver Model 1787WDDM Windows Display Driver Model 1788WDT watchdog timer 1789WEP Wired Equivalent Privacy 1790WFI wait for interrupt 1791WFQ weighted fair queuing 1792WH write hit 1793WHEA Windows hardware error architecture 1794WIFI wireless fidelity 1795WLAN wireless local area network 1796WM write miss 1797WMF Windows meta file 1798WMI Windows Management Instrumentation 1799WOL Wake-on-LAN 1800WOM Wake-on-Modem 1801WOR Wake-on-Ring 1802WORM write once read many 1803WP WordPerfect 1804WP word processor 1805WP write protect 1806WPA Wi-Fi Protected Access 1807WPA2 Wi-Fi Protected Access II 1808WPAD web proxy auto-discovery protocol 1809WPS Wi-Fi Protected Setup 1810WRAM window random access memory 1811WS web services 1812WTC write through caching 1813WTD weighted tail drop 1814WWAN wireless wide area network 1815WWW world wide web 1816WYSIAYG what you see is all you get 1817WYSIWYG what you see is what you get 1818XBAR crossbar 1819XDMCP X Display Manager control protocol 1820XER XML encoding rules 1821XGA Extended Graphics Array 1822XHR XMLHttpRequest 1823XIP execute in place 1824XML Extensible Markup Language 1825XNA XNA's not acronymed 1826XNS Xerox network systems 1827XOR exclusive or 1828XP extreme programming 1829XSI X/Open System Interface 1830XSL extensible stylesheet language 1831XSLT extensible stylesheet language transformations 1832XSS cross site scripting 1833XT extended technology 1834XTACACS extended terminal access controller access-control system 1835XTI X/Open transport interface 1836XUL XML user interface language 1837YACC yet another compiler compiler 1838YAML YAML ain't markup language 1839YANG yet another next generation 1840YAWPFAPR you are welcome; please file a problem report 1841YP Yellow Pages 1842YTD year to date 1843ZAP ZFS attribute processor 1844ZBR zone bit recording 1845ZFOD zero-filled on demand 1846ZFS zettabyte file system 1847ZIF zero insertion force 1848ZIFS zero insertion force socket 1849ZIL ZFS intent log 1850ZMA zone multicast address 1851ZOI zero one infinity 1852ZOI zone of influence 1853ZPL ZFS Posix layer 1854ZVOL ZFS Volume 1855