acronyms.comp revision 1.324
1$NetBSD: acronyms.comp,v 1.324 2021/06/18 21:58:20 riastradh 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 520EEE embrace, extend, extinguish 521EEPROM electrically erasable programmable read only memory 522EFI extensible firmware interface 523EFL emitter follower logic 524EFM eight to fourteen modulation 525EFS extent file system 526EGA Enhanced Graphics Adapter 527EGP exterior gateway protocol 528EH extension header 529EIDE enhanced IDE 530EISA extended industry standard architecture 531EINJ error injection table 532ELF executable and linking format 533ELS entry level system 534EMI electro-magnetic interference 535EMP electro-magnetic pulse 536EMR electro-magnetic radiation 537EMACS Editor MACroS 538ENIAC electronic numerical integrator and computer 539EOF end of file 540EOI end of interrupt 541EOIS end of interactive support 542EOL end of life 543EOL end of line 544EOT end of transmission 545EPIC explicitly parallel instruction computing 546EPP enhanced parallel port 547EPRML extended partial response, maximum likelihood 548EPROM erasable programmable read only memory 549EPT extended page tables 550ERC error recovery control 551ERD emergency recovery disk 552ERD entity relationship diagram 553ERE extended regular expression 554ERST error record serialization table 555ESAN Efficiency Sanitizer 556ESB enterprise service bus 557ESDI enhanced small disk interface 558ESDRAM enhanced synchronous dynamic random access memory 559ESI enclosure services interface 560ESS electronic switching system 561ESS extended service set 562ESSID extended service set identifier 563EST enhanced speedstep 564ETL extract, transform, load 565EU execution unit 566EULA end user license agreement 567FAT file allocation table 568FBRAM frame buffer random access memory 569FCIF full common intermediate format 570FCL fiber channel loop 571FCS frame check sequence 572FDC floppy disk controller 573FDD floppy disk drive 574FDDI fiber distributed data interface 575FDE full disk encryption 576FDT flattened device tree 577FEA finite element analysis 578FEC forward error correction 579FET field-effect transistor 580FF finite field 581FF form feed 582FFDH finite-field Diffie-Hellman 583FFH functional fixed hardware 584FFI foreign function interface 585FFM focus follows mouse 586FFS Fast File System 587FFS find first set 588FFT fast Fourier transform 589FG floating gate 590FHRP first hop redundancy protocol 591FHSS frequency hop spread spectrum 592FID frequency identifier 593FIFO first in, first out 594FILO first in, last out 595FIPS Federal Information Processing Standards 596FIR fast infrared 597FLOPS floating [point] operations per second 598FLOSS free/libre/open source software 599FM frequency modulation 600FMR false match rate 601FOSS free/open source software 602FPGA field programmable gate array 603FPM fast page mode 604FPR floating point register 605FPU floating point unit 606FQDN fully qualified domain name 607FRR false rejection rate 608FRU field replaceable unit 609FS file system 610FSB front side bus 611FSCK file system check 612FSF Free Software Foundation 613FSK frequency shift keying 614FSM finite-state machine 615FTA fault tree analysis 616FTL flash translation layer 617FTP File Transfer Protocol 618FTPS File Transfer Protocol Secure 619FTTH fiber to the home 620FUS fast user switching 621FWH firmware hub 622FWS folding white space 623GAL generic array logic 624GARP generic attribute registration protocol 625GAS generic address structure 626GC garbage collector 627GCM Galois counter mode 628GCR group-coded recording 629GDI Graphics Device Interface 630GDT global descriptor table 631GECOS general comprehensive operating supervisor 632GEM graphics environment manager 633GEM graphics execution manager 634GEMM general matrix multiply 635GENA general event notification architecture 636GHC Glasgow Haskell compiler 637GHES generic hardware error source 638GIC generic interrupt controller 639GID group identifier 640GIF graphics interchange format 641GLBP gateway load balancing protocol 642GMCH graphics and memory controller hub 643GNU GNU's Not Unix 644GOP graphics output protocol 645GOT global offset table 646GPE general purpose event 647GPF general protection fault 648GPG GNU Privacy Guard 649GPL [GNU] General Public License 650GPR general purpose register 651GPS generalized processor sharing 652GPT GUID partition table 653GPU graphics processing unit 654GR golden ratio 655GRE generic routing encapsulation 656GRO generic receive offload 657GSI global system interrupt 658GSO generic send offload 659GUI graphical user interface 660GUID globally unique identifier 661GVFS git virtual file system 662HA high availability 663HAL hardware abstraction layer 664HAT hashed array tree 665HATEOAS hypermedia as the engine of application state 666HBA host bus adapter 667HCF halt and catch fire 668HCI host controller interface 669HCI human-computer interaction 670HCL hardware compatibility list 671HDCP High-bandwidth Digital Content Protection 672HDD hard disk drive 673HDL hardware description language 674HDMI High-Definition Multimedia Interface 675HDTV high-definition television 676HECI host embedded controller interface 677HEST hardware error source table 678HEVC high efficiency video coding 679HF high frequency 680HFM highest frequency mode 681HFS hierarchical file system 682HID human interface device 683HKP HTTP Keyserver Protocol 684HLL high-level language 685HMA high memory area 686HMI human-machine interface 687HOOD hierarchical object oriented design 688HOTP HMAC-based one time password 689HP Hewlett-Packard 690HPC high performance computing 691HPD hot plug detection 692HPET high precision event timer 693HSM hardware security module 694HSM hierarchical storage management 695HSRP hot standby router protocol 696HT hyper-threading 697HTC hardware thermal control 698HTCC high temperature co-fired ceramic 699HTML HyperText Markup Language 700HTT hyper-threading technology 701HTTP Hypertext Transfer Protocol 702HTTPS Hypertext Transfer Protocol Secure 703HVM hardware virtual machine 704HVDS High-Voltage Differential Signaling 705HWASAN Hardware-assisted Address Sanitizer 706HZ Hertz 707I2O intelligent input/output 708IA information assurance 709IAAS infrastructure as a service 710IANA Internet Assigned Numbers Authority 711IBC iterated block cipher 712IBM International Business Machines 713IBPI international blinking pattern interpretation 714IBS instruction based sampling 715IBSS independent basic service set 716IC integrated circuit 717ICA independent computer architecture 718ICACLS integrity control access control lists 719ICB Internet Citizen's Band 720ICE in-circuit emulator 721ICE internal compiler error 722ICH I/O controller hub 723ICMP Internet Control Message Protocol 724ICT information and communications technology 725ICW initialization command word 726IDA Intel dynamic acceleration 727IDCMP Intuition direct communication message port 728IDCT inverse discrete cosine transform 729IDE integrated development environment 730IDE integrated drive electronics 731IDPS intrusion detection [and] prevention system 732IDRP inter-domain routing protocol 733IDS intrusion detection system 734IDT interrupt descriptor table 735IE Internet Explorer 736IEC International Electrotechnical Commission 737IEEE Institute of Electrical and Electronics Engineers 738IESG Internet Engineering Steering Group 739IETF Internet Engineering Task Force 740IF intermediate frequency 741IFCM isochronous flow control mode 742IFF Interchange File Format 743IFS internal field separator 744IGD Internet gateway device 745IGMP Internet Group Management Protocol 746IGP interior gateway protocol 747IHV independent hardware vendor 748IKE Internet key exchange 749ILM internal loopback mode 750ILOM integrated lights-out management 751ILP instruction level parallelism 752IM instant messaging 753IME input method editor 754IMAP Internet Message Access Protocol 755IMC integrated memory controller 756IMCR interrupt mode configuration register 757IMR interrupt mask register 758IMS information management system 759IMSI international mobile subscriber identity 760INCITS InterNational Committee for Information Technology Standards 761INODE index node 762IO input/output 763IOCTL input/output control 764IOM input/output managers 765IOMMU input/output memory management unit 766IOT Internet of Things 767IP Internet Protocol 768IP intellectual property 769IPC instructions per cycle 770IPC interprocess communication 771IPCF interprocess communication facility 772IPE integrated programming environment 773IPI intelligent peripheral interface 774IPI interprocessor interrupt 775IPL Initial Program Load 776IPL Interrupt Priority Level 777IPMB Intelligent Platform Management Bus 778IPMI Intelligent Platform Management Interface 779IPNG Internet Protocol, Next Generation 780IPS in-plane switching 781IPS intrusion prevention system 782IPSEC Internet Protocol Security 783IRC Internet Relay Chat 784IRDA infrared data association 785IRDP ICMP Router Discovery Protocol 786IRQ interrupt request 787IRQL interrupt request level 788IRR interrupt request register 789IRTF Internet Research Task Force 790IS information system 791ISA industry standard architecture 792ISA instruction set architecture 793ISE instant secure erase 794ISDN integrated services digital network 795ISI inter-symbol interference 796ISL initial system load 797ISM industrial, scientific, [and] medical 798ISMS information system management system 799ISN initial serial number 800ISO International Standards Organization 801ISOC Internet Society 802ISP Internet service provider 803ISR in-service register 804ISR interrupt service routine 805IST internal spanning tree 806IST interrupt stack table 807ISV independent software vendor 808IT information technology 809ITB Intel Turbo Boost 810ITIL information technology infrastructure library 811ITP in-target probe 812ITSM IT service management 813IV initialization vector 814IVT interrupt vector table 815JBOD just a bunch of disks 816JCL Job Control Language 817JFET junction [gate] field-effect transistor 818JIT just in time 819JPEG Joint Photographic Experts Group 820JRE Java Runtime Environment 821JSON JavaScript Object Notation 822JTAG joint test action group 823KASLR kernel address space layout randomization 824KB keyboard 825KB kilobyte 826KBD keyboard 827KBD kilobaud 828KCS keyboard controller style 829KLOC thousand lines of code 830KMS kernel-mode setting 831KPI kernel programming interface 832KVA kernel virtual address 833KVM kernel virtual machine 834KVM kernel virtual memory 835KVM keyboard, video, [and] mouse 836L2CAP link layer control and adaptation protocol 837LAG link aggregation group 838LAMP Linux Apache MySQL {Perl,PHP,Python} 839LAN local area network 840LAPIC local advanced programmable interrupt controller 841LAR load access rights 842LBA logical block addressing 843LBNF labeled backus-naur form 844LBS location-based service 845LCD liquid crystal display 846LCP link control protocol 847LDA local delivery agent 848LDAP Lightweight Directory Access Protocol 849LDR light-dependent resistor 850LDT local descriptor table 851LE logical extent 852LED light emitting diode 853LELL low energy link layer 854LER label edge router 855LF line feed 856LF low frequency 857LFM lowest frequency mode 858LFN long file names 859LFO low-frequency oscillation 860LFS log-structured file system 861LFU least frequently used 862LHP loop heat pipe 863LIF logical interchange format 864LIFO last in, first out 865LILO LInux LOader 866LILO last in, last out 867LINT local interrupt 868LIR local Internet registry 869LISP LISt Processor 870LISP Locator/ID Separation Protocol 871LKM {Linux,loadable} kernel module 872LKML Linux kernel mailing list 873LL load linked 874LL/SC load linked/store conditional 875LLC logical link control 876LLD low-level design 877LLDD low-level design document 878LLDP link layer discovery protocol 879LLF low level format 880LLMNR link-local multicast name resolution 881LLVM Low Level Virtual Machine 882LM long mode 883LMCE local machine check exception 884LMI local management interface 885LMM link management mode 886LMP link management protocol 887LNO loop nest optimization 888LOC lines of code 889LOM lights-out management 890LPE Linux performance events 891LPC low pin count 892LPS local positioning system 893LRC longitudinal redundancy check 894LRM left-to-right mark 895LRO left-to-right override 896LRU least recently used 897LS link state 898LSAN Leak Sanitizer 899LSB Linux standards base 900LSB least significant {bit,byte} 901LSI large scale integration 902LSL load segment limit 903LSM log structured merge 904LSN Large Scale NAT 905LSN log sequence number 906LSO large send offload 907LSR label switch router 908LTCC low temperature co-fired ceramic 909LTO linear tape-open 910LTO link time optimization 911LTR left to right 912LTR load task register 913LTR letter(-sized paper) 914LTS long term support 915LUA Lua Uppercase Accident 916LUN logical unit number 917LV logical volume 918LVM logical volume management 919LVT local vector table 920LVDS Low-Voltage Differential Signaling 921LWP light-weight process 922LZSS Lempel Ziv Storer Szymanski 923LZW Lempel Ziv Welch 924MAB MAC authentication bypass 925MAC mandatory access control 926MAC {media,medium} access control 927MAC message authentication {check,code} 928MADT multiple APIC descriptor table 929MAMR microwave-assisted magnetic recording 930MB megabyte 931MBA multi-boot agent 932MBR master boot record 933MBS megabits per second 934MC memory controller 935MCA machine check architecture 936MCA MicroChannel architecture 937MCC multiversion concurrency control 938MCE machine check exception 939MCGA Multi-Color Graphics Array 940MCH memory controller hub 941MCLAG multi-chassis link aggregation group 942MCM multi-chip module 943MCQ memory controlled queue 944MD machine-dependent 945MD MiniDisc 946MD-SAL model-driven service abstraction layer 947MDA mail delivery agent 948MDA Monochrome Display Adapter 949MDC Management Data Clock 950MDI Medium Dependent Interface 951MDI-X Medium Dependent Interface Crossover 952MDIO Management Data Input/Output 953MDMX MIPS Digital Media eXtension 954MDRAM multibank dynamic random access memory 955MESI modified, exclusive, shared, invalid 956MFC merge from current 957MFC Microsoft Foundation Classes 958MFM modified frequency modulation 959MFU most frequently used 960MGCP media gateway control protocol 961MHU message handling unit 962MI machine-independent 963MI machine interface 964MIB management information base 965MIC message integrity {check,code} 966MID mobile Internet device 967MIDI musical instrument digital interface 968MIF management information format 969MII media independent interface 970MIM man in the middle 971MIMD multiple instruction, multiple data 972MIME Multipurpose Internet Mail Extensions 973MIMO multiple input multiple output 974MIPS million instructions per second 975MIPS Microprocessor without Interlocked Pipeline Stages 976MISD multiple instruction, single data 977MIT Massachusetts Institute of Technology 978MITM man in the middle 979ML machine language 980ML machine learning 981ML mailing list 982ML markup language 983ML maximum likelihood 984MLAG multi-chassis link aggregation group 985MLC multi-level cell 986MLD multicast listener discovery 987MLHP micro loop heat pipe 988MMF multi-mode fiber 989MMIC monolithic microwave integrated circuit 990MMIO memory mapped input/output 991MMORPG massive multiplayer online role playing game 992MMRP multiple MAC registration protocol 993MMU memory management unit 994MMX matrix math extension 995MMX multimedia extension 996MMX multiple math extension 997MO magneto-optical 998MOESI modified, owned, exclusive, shared, invalid 999MOF maximum operating frequency 1000MOSFET metal-oxide-semiconductor field-effect transistor 1001MOSI modified, owned, shared, invalid 1002MP multi-platform 1003MP multiplayer 1004MP {multiprocessing,multiprocessor} 1005MPEG moving picture experts group 1006MPI message passing interface 1007MPLS Multiprotocol Label Switching 1008MPP massively parallel processor 1009MPS memory pool system 1010MPS multiprocessor specification 1011MQTT Message Queuing Telemetry Transport 1012MR modem ready 1013MRO method resolution order 1014MRP multiple registration protocol 1015MRU most recently used 1016MS Microsoft 1017MSAN Memory Sanitizer 1018MSB most significant {bit,byte} 1019MSC message sequence chart 1020MSE mean square error 1021MSF minutes seconds frames 1022MSI message signaled interrupt 1023MSI modified, shared, invalid 1024MSR {machine state,model-specific} register 1025MSS maximum segment size 1026MSTP Multiple Spanning Tree Protocol 1027MT machine translation 1028MTA mail transfer agent 1029MTBF mean time between failures 1030MTP media transfer protocol 1031MTRR memory type range register 1032MTTF mean time to failure 1033MTU maximum transmission unit 1034MUA mail user agent 1035MUD multi-user domain 1036MVCC multiversion concurrency control 1037MVR multicast VLAN registration 1038MVRP multiple VLAN registration protocol 1039MWE module width encoding 1040MX mail exchange 1041NACK negative acknowledgement 1042NAK negative acknowledgement 1043NAN neighbor awareness networking 1044NAN not a number 1045NAPT Network Address Port Translation 1046NAS network attached storage 1047NAT network address translation 1048NAV network allocation vector 1049NC numerical control 1050NC-SI network controller sideband interface 1051NCO numerically-controlled oscillator 1052NCP Network Control Protocol 1053NCSI network connectivity status indicator 1054NCQ native command queuing 1055ND neighbor discovery 1056NDFA nondeterministic finite automaton 1057NDIS network driver interface specification 1058NE numeric error 1059NEWS Network extensible Window System 1060NFA nondeterministic finite automaton 1061NFC near-field communication 1062NFCI no functional change intended 1063NFS network file system 1064NFV network function virtualization 1065NIA next instruction address 1066NIC network information center 1067NIC network interface card 1068NIDS network intrusion detection system 1069NIP network interface protocol 1070NIPS network intrusion prevention system 1071NIS network information service 1072NIST National Institute of Standards and Technology 1073NLS native language support 1074NMI non-maskable interrupt 1075NNTP Network News Transfer Protocol 1076NOC network operations center 1077NOP no operation 1078NOS network operating system 1079NP nondeterministic polynomial time 1080NRND not recommended for new designs 1081NRZ non-return to zero 1082NSA nation-state adversary 1083NSA no such agency 1084NSA National Security Agency 1085NTM non-deterministic Turing machine 1086NTP Network Time Protocol 1087NUMA non-uniform memory access 1088NURBS non-uniform rational basis spline 1089NVMM NetBSD Virtual Machine Monitor 1090NVMM non-volatile main memory 1091NVRAM non-volatile random access memory 1092NW not write-through 1093NX no execute 1094OAEP optimal asymmetric encryption padding 1095OAM operations, administration, and {management,maintenance} 1096OBO off by one 1097OBOE off by one error 1098OCL object constraint language 1099OCR optical character recognition 1100ODE offline device environment 1101ODI open data-link interface 1102ODM object data manager 1103ODCM on-demand clock modulation 1104ODT on-die termination 1105OEM original equipment manufacturer 1106OFB output feedback 1107OFDM orthogonal frequency division multiplexing 1108OFET organic field-effect transistor 1109OLAP online analytical processing 1110OLE object linking and embedding 1111OLTP online transaction processing 1112ONFI open nand flash interface 1113OO OpenOffice 1114OO object oriented 1115OOB out of band 1116OOE out of order execution 1117OOM out of memory 1118OOO OpenOffice.org 1119OOP object oriented programming 1120OOPS object oriented programming systems 1121OOSE object oriented software engineering 1122OPM operations per minute 1123OPS operations per second 1124OQL Object Query Language 1125ORB object request broker 1126ORM object-relational mapping 1127OS operating system 1128OSD object-based storage device 1129OSD open source definition 1130OSF open software foundation 1131OSI Open Source Initiative 1132OSI open systems interconnection 1133OSPF open shortest path first 1134OSPM OS power management 1135OSS open sound system 1136OSS open source software 1137OSVW operating system visible workarounds 1138OTP one time password 1139OTP open telecom platform 1140OU organizational unit 1141OUI organizationally unique identifier 1142OWASP Open Web Application Security Project 1143OWL Web Ontology Language 1144P2P PCI to PCI 1145P2P peer to peer 1146PA phase accumulator 1147PA physical address 1148PAAS platform as a service 1149PAC phase-amplitude converter 1150PAE physical address extension 1151PAGP port aggregation protocol 1152PAL phase alternating line 1153PAL programmable array logic 1154PAM pluggable authentication modules 1155PAM pulse amplitude modulation 1156PAP password authentication protocol 1157PAT page attribute table 1158PAT port address translation 1159PATA parallel ATA 1160PAX portable archive exchange 1161PBE pending break encoding 1162PBE programming by example 1163PBR partition boot record 1164PBX private branch exchange 1165PC personal computer 1166PC program counter 1167PCB printed circuit board 1168PCB process control block 1169PCB Protocol Control Block 1170PCBC propagating cipher block chaining 1171PCC Portable C Compiler 1172PCD page-level cache disable 1173PCE path computation element 1174PCE performance-monitor counter enable 1175PCEP Path Computation Element Protocol 1176PCH platform controller hub 1177PCI peripheral component interconnect 1178PCM phase change memory 1179PCM pulse code modulation 1180PCMCIA Personal Computer Memory Card International Association 1181PCP Port Control Protocol 1182PD public domain 1183PDA personal digital assistant 1184PDA pushdown automaton 1185PDAG propositional directed acyclic graph 1186PDB power distribution board 1187PDF portable document format 1188PDM pulse-duration modulation 1189PDN pull-down network 1190PDP page {descriptor,directory} page 1191PDS product data sheet 1192PDU protocol data unit 1193PE protection enable 1194PE provider edge 1195PEAP Protected EAP 1196PECI platform environment control interface 1197PEP protocol extension protocol 1198PER packed encoding rules 1199PFS perfect forward secrecy 1200PGAS partitioned global address space 1201PGE page global enable 1202PGP Pretty Good Privacy 1203PHB PCI host bridge 1204PHP PHP: Hypertext Preprocessor 1205PIC performance instrumentation counters 1206PIC position independent code 1207PIC programmable interrupt controller 1208PICNIC problem in chair, not in computer 1209PID process id 1210PIE position independent executable 1211PIL Priority Interrupt Level 1212PIM personal information manager 1213PIM platform-independent model 1214PIO programmed input/output 1215PIPT physically indexed, physically tagged 1216PIQ prefetch input queue 1217PIT programmable interrupt timer 1218PIV personal identity verification 1219PIX Private Internet eXchange 1220PKCS public-key cryptography standards 1221PKI public key infrastructure 1222PLC programmable logic controller 1223PLD programmable logic device 1224PLL phase locked loop 1225PLRU pseudo LRU 1226PLTM package level thermal management 1227PM power management 1228PM {phase,pulse} modulation 1229PMC performance monitoring counters 1230PME power management event 1231PMEG page map entry group 1232PMI performance monitoring infrastructure 1233PMI platform management interrupt 1234PMIC power management integrated circut 1235PMIO port-mapped input/output 1236PMT photo-multiplier tube 1237PMU performance monitoring units 1238PMU power management unit 1239PNG portable network graphics 1240PNP plug and play 1241POE power over ethernet 1242POF probability of failure 1243POP Post Office Protocol 1244POP power on password 1245POR plan of record 1246POSIX Portable Operating System Interface [for Unix] 1247POST power on self test 1248POTS plain old telephone system 1249POWER Performance Optimization With Enhanced RISC 1250POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1251PP pair programming 1252PPB PCI [to] PCI bridge 1253PPC PowerPC 1254PPC Power Performance Computing 1255PPI pixels per inch 1256PPM pages per minute 1257PPP Point-to-Point Protocol 1258PPPOA Point-to-Point Protocol over ATM 1259PPPOE Point-to-Point Protocol over Ethernet 1260PPR processor programming reference 1261PPT powerpoint 1262PPT punched paper tape 1263PPU physics processing unit 1264PRAM Parameter RAM 1265PRBS pseudorandom bit sequence 1266PRG pseudorandom generator 1267PRF pseudorandom function [family] 1268PRML partial response, maximum likelihood 1269PRN pseudorandom {noise,number} 1270PRNG pseudorandom number generator 1271PROM programmable read only memory 1272PRP pseudorandom permutation 1273PRU Programmable Realtime Unit 1274PS PostScript 1275PSD power spectral density 1276PSE page size extensions 1277PSK phase shift keying 1278PSK pre-shared key 1279PSTN public switched telephone network 1280PSW program status word 1281PTE page table entry 1282PTLA pseudo top level aggregator 1283PTP page table page 1284PTV perceived target value 1285PU processing unit 1286PUC personal unblocking code 1287PUN physical unit number 1288PV physical volume 1289PVC permanent virtual circuit 1290PVG physical volume group 1291PVI protected-mode virtual interrupt 1292PVRST Per-VLAN rapid spanning tree 1293PVST Per-VLAN Spanning Tree 1294PWM pulse width modulation 1295PXE preboot execution environment 1296QA quality assurance 1297QAM quadrature amplitude modulation 1298QAM quality assurance management 1299QBE query by example 1300QC quality control 1301QDI quasi delay insensitive 1302QCIF quarter common intermediate format 1303QOI quality of implementation 1304QOI quick order interface 1305QOS quality of service 1306QVL qualified vendor list 1307R/O read only 1308R/W read/write 1309RA receiver address 1310RA remote assistance 1311RA resource affinity 1312RA router advertisement 1313RAD rapid application development 1314RADIUS remote authentication dial-in user service 1315RAID redundant array of {independent,inexpensive} disks 1316RAM random access memory 1317RAS reliability, availability and serviceability 1318RAS remote access service 1319RAS restartable atomic sequence 1320RAS row address strobe 1321RBF radial basis function 1322RBNF routing backus-naur form 1323RBT red-black tree 1324RC release candidate 1325RC remote control 1326RC run commands 1327RCS Revision Control System 1328RCS revision control system 1329RCU read, copy, update 1330RDB Rigid Disk Block 1331RDBMS relational database management system 1332RDF Resource Description Framework 1333RDM relational data model 1334RDMA remote direct memory access 1335RDP remote desktop protocol 1336RDRAM Rambus DRAM 1337RE regular expression 1338REPL read, evaluate, print, loop 1339REST representational state transfer 1340RF radio frequency 1341RFB remote frame buffer 1342RFI radio frequency interference 1343RFO request for ownership 1344RFU reserved for future use 1345RGB red green blue 1346RGBA red green blue alpha 1347RGMII reduced gigabit media independent interface 1348RH read hit 1349RHEL Red Hat Enterprise Linux 1350RHL Red Hat Linux 1351RIB routing information base 1352RIFF Resource Interchange File Format 1353RIP Raster Image Processor 1354RIP Routing Information Protocol 1355RIR regional Internet registry 1356RISC reduced instruction set {computer,computing} 1357RKM ROM Kernel Manual 1358RLE run length encoding 1359RLL run length limited 1360RLO right-to-left override 1361RM read miss 1362RMCP Remote Management Control Protocol 1363RMI remote method invocation 1364RMO Relaxed Memory Ordering 1365RMPM rapid memory power management 1366RMS root mean square 1367RMW read, modify, write 1368RNG random number generator 1369ROM read only memory 1370RPC remote procedure call 1371RPG Report Program Generator 1372RPKI resource PKI 1373RPL requested privilege level 1374RPM revolutions per minute 1375RPN reverse Polish notation 1376RPVST Rapid Per-VLAN Spanning Tree 1377RR random replacement 1378RR round robin 1379RS relay station 1380RSA Rivest, Shamir, [and] Adleman 1381RSIP Realm Specific IP 1382RSN Robust Secure Network 1383RSS really simple syndication 1384RSS Receive Side Scaling 1385RSS residual sum of squares 1386RSTP Rapid Spanning Tree Protocol 1387RT real time 1388RTC real time clock 1389RTC real time computing 1390RTF rich text format 1391RTL register transfer language 1392RTL resistor-transistor logic 1393RTL right to left 1394RTOS real time operating system 1395RTP Real-time Transport Protocol 1396RTS request to send 1397RTT round trip time 1398RUP rational unified process 1399RW Rabin-Williams 1400RWM read-write memory 1401RX {receive,receiver} 1402S/PDIF Sony/Philips Digital Interface Format 1403SA security advisory 1404SA security association 1405SA source address 1406SA structured analysis 1407SAAS software as a service 1408SABRE Semi-automated business research environment 1409SACD super audio compact disc 1410SAD security association database 1411SAF-TE SCSI accessed fault-tolerant enclosure 1412SAGE Semi-automated ground environment 1413SAL {service,system} abstraction layer 1414SAM serial access memory 1415SAM sum addressed memory 1416SAML security assertion markup language 1417SAN storage area network 1418SAP service access point 1419SAPIC streamlined advanced programmable interrupt controller 1420SASD structured analysis, structured design 1421SASI Shugart Associates System Interface 1422SASL simple authentication [and] security layer 1423SATA serial advanced technology attachment 1424SAX simple API for XML 1425SB sound blaster 1426SBSA server base system architecture 1427SBU standard build unit 1428SC store conditional 1429SCA source code analyzer 1430SCADA supervisory control and data acquisition 1431SCC single chip cloud 1432SCC source code control 1433SCCP skinny call control protocol 1434SCCS Source Code Control System 1435SCI scalable coherent interface 1436SCI system control interrupt 1437SCIM smart common input method 1438SCM software configuration management 1439SCM source code management 1440SCM storage-class memory 1441SCO synchronous connection orientated 1442SCP secure copy 1443SCP system control processor 1444SCPI system control and power interface 1445SCSI Small Computer System Interface 1446SCTP Stream Control Transmission Protocol 1447SDDC software defined data center 1448SDEI software delegated exception interface 1449SDI symbol deinterleave 1450SDK software development kit 1451SDL Simple Declarative Language 1452SDL Simple Direct-media Layer 1453SDLC {software,system,systems} development life cycle 1454SDN software defined networking 1455SDP Session Description Protocol 1456SDR software defined radio 1457SDRAM synchronous dynamic random access memory 1458SDS software defined storage 1459SDT syntax-directed translation 1460SEA synchronous external abort 1461SEGV segmentation violation 1462SED self-encrypting drive 1463SED stream editor 1464SEMB serial ATA enclosure management bridge 1465SEO search engine optimization 1466SES SCSI enclosure services 1467SFC sequential function chart 1468SFI simple firmware interface 1469SFI software fault isolation 1470SFTP SSH File Transfer Protocol 1471SFTP Serial File Transfer Protocol 1472SFTP Simple File Transfer Protocol 1473SGI Silicon Graphics, Inc 1474SGI software generated interrupt 1475SGMII serial gigabit media independent interface 1476SGPIO serial general purpose input/output 1477SGRAM synchronous graphics random access memory 1478SHA secure hash algorithm 1479SICP structure and interpretation of computer programs 1480SIDH supersingular isogeny Diffie-Hellman 1481SIEM security information and event management 1482SIF source input format 1483SIFS short inter-frame space 1484SIM subscriber identity module 1485SIMD single instruction, multiple data 1486SIMM single inline memory module 1487SIP Session Initiation Protocol 1488SIR signal-to-interference ratio 1489SIR slow infrared 1490SISD single instruction, single data 1491SLAAC stateless address auto-configuration 1492SLC single-level cell 1493SLDRAM synchronous-link dynamic random access memory 1494SLED single large expensive disk 1495SLI scalable link interface 1496SLI scan-line interleave 1497SLIC system license internal code 1498SLOC source lines of code 1499SLRU segmented LRU 1500SMA smart memory access 1501SMAF system management action field 1502SMAP Simple Mail Access Protocol 1503SMAP supervisor mode access prevention 1504SMART self-monitoring analysis and reporting technology 1505SMB Server Message Block 1506SMB system management bus 1507SMBIOS System Management BIOS 1508SMC system management controller 1509SMD storage module device 1510SMEP supervisor mode execution protection 1511SMF single mode fiber 1512SMI structure of management information 1513SMI system management interrupt 1514SMM system management mode 1515SMP serial management protocol 1516SMP symmetric multiprocessing 1517SMR shingled magnetic recording 1518SMR state machine replication 1519SMT simultaneous multithreading 1520SMTP Simple Mail Transfer Protocol 1521SMU system management unit 1522SNA systems network architecture 1523SNAP Sub-Network Access Protocol 1524SNIA Storage Networking Industry Association 1525SNMP Simple Network Management Protocol 1526SNR signal-to-noise ratio 1527SOA service oriented architecture 1528SOAP Simple Object Access Protocol 1529SOC system on chip 1530SOF start of frame 1531SOH start of header 1532SOHO small office/home office 1533SOL serial over LAN 1534SOM system on module 1535SP service pack 1536SP stack pointer 1537SPA storage pool allocator 1538SPAN switched port analyzer 1539SPARC scalable processor architecture 1540SPARQL SPARQL Protocol and RDF Query Language 1541SPD security policy database 1542SPD serial presence detect 1543SPDIF Sony/Philips digital interface format 1544SPI serial peripheral interface 1545SPI stateful packet inspection 1546SPL system interrupt priority level 1547SPL spinlock 1548SPMD single process, multiple data 1549SPR special purpose register 1550SPT sectors per track 1551SQA software quality assurance 1552SQCIF sub quarter common intermediate format 1553SQL Structured Query Language 1554SRAM static random access memory 1555SRC sample rate conversion 1556SRP SCSI RDMA protocol 1557SRR shaped round robin 1558SRTP Secure Real-time Transport Protocol 1559SS self-snoop 1560SS stack segment 1561SSA static single assignment 1562SSAP source service access point 1563SSB single-sideband modulation 1564SSC spread spectrum clock 1565SSD solid state drive 1566SSE streaming SIMD extensions 1567SSFDC solid state floppy disc card 1568SSH secure shell 1569SSI server side includes 1570SSID service set identifier 1571SSTP secure socket tunneling protocol 1572SSL secure sockets layer 1573SSP stack smashing protection 1574STC software thermal control 1575STD state transition diagram 1576STM software transactional memory 1577STOMP Streaming Text Oriented Messaging Protocol 1578STP Spanning Tree Protocol 1579STP shielded twisted pair 1580STRG spanning tree root guard 1581SUN Stanford University Network 1582SUS Single Unix Specification 1583SUT system under test 1584SVC switched virtual circuit 1585SVG scalable vector graphics 1586SVGA Super Video Graphics Array 1587SVI {switch,switched} virtual interface 1588SVM secure virtual machine 1589SVM support vector machine 1590SVR System V Release 1591SVS Separate Virtual Space 1592SWF Shockwave Flash 1593SWIG simplified wrapper [and] interface generator 1594SYR symbol timing recovery 1595TA test assertion 1596TA transmitter address 1597TACACS terminal access controller access-control system 1598TAI international atomic time 1599TAO track at once 1600TAOCP The Art of Computer Programming 1601TAP Test Anything Protocol 1602TAS test and set 1603TB terabyte 1604TBNF transitional backus-naur form 1605TCB trace capture buffer 1606TCB trusted computing base 1607TCC thermal control circuit 1608TCL tool command language 1609TCP Transmission Control Protocol 1610TCQ tagged command queueing 1611TDC time [to] digital converter 1612TDD test-driven development 1613TDD time division duplex 1614TDM time division multiplexing 1615TDMA time division multiple access 1616TDOA time difference of arrival 1617TDP thermal design {point,power} 1618TDR time-domain reflectometry 1619TECO Text Editor and Corrector 1620TFT thin film transistor 1621TFTP Trivial File Transfer Protocol 1622TIAS try it and see 1623TIFF tagged image file format 1624TITS try it to see 1625TK temporal key 1626TKIP Temporal Key Integrity Protocol 1627TLA top level aggregator 1628TLB translation lookaside buffer 1629TLD top level domain 1630TLER time-limited error recovery 1631TLI transport layer interface 1632TLS thread local storage 1633TLS transport layer security 1634TM Turing machine 1635TM thermal monitor 1636TMG transmogrifier 1637TMDS transition minimized differential signaling 1638TMO timeout 1639TOD time of day 1640TOE TCP offload engine 1641TOFU trust on first use 1642TOS terms of service 1643TOS trusted operating system 1644TOS type of service 1645TOTP time-based one time password 1646TP transaction processing 1647TPI tracks per inch 1648TPM transactions per minute 1649TPM trusted platform module 1650TPR task priority register 1651TPS transactions per second 1652TPS transmission parameters signaling 1653TR task register 1654TR token ring 1655TRL timing recovery loop 1656TRNG true random number generator 1657TS terminal services 1658TS time series 1659TS time stamp 1660TS transport stream 1661TSAN Thread Sanitizer 1662TSC time stamp counter 1663TSD time stamp disable 1664TSDB time series database 1665TSL test, set, lock 1666TSO time sharing option 1667TSO TCP segmentation offload 1668TSO Total Store Ordering 1669TSP Time-Stamp Protocol 1670TSP Tunnel Setup Protocol 1671TSP time synchronization protocol 1672TSP traveling salesman problem 1673TSS task state segment 1674TSV tab-separated values 1675TTL time to live 1676TTL transistor-transistor logic 1677TTM translation table maps 1678TTY teletype 1679TUI {terminal,text-based,textual} user interface 1680TX {transmit out,transmitter} 1681TXG transaction group 1682TZ time zone 1683UAC user {access,account} control 1684UAF use-after-free 1685UART universal asynchronous receiver/transmitter 1686UAT user acceptance testing 1687UB undefined behavior 1688UBSAN Undefined Behavior Sanitizer 1689UC uncacheable 1690UCS uniform-cost search 1691UCS unified computing system 1692UCS universal coded character set 1693UDI uniform driver interface 1694UDMA ultra DMA 1695UDO ultra density optical 1696UDP User Datagram Protocol 1697UEFI unified extensible firmware interface 1698UFO UDP fragmentation offload 1699UFS Unix File System 1700UGA universal graphics adapter 1701UI unit interval 1702UI user interface 1703UICC universal integrated circuit card 1704UID unique identifier 1705UID user identifier 1706UL upload 1707UMA uniform memory access 1708UMA upper memory area 1709UMB upper memory block 1710UML unified modeling language 1711UMPC ultra-mobile PC 1712UPNP universal plug and play 1713UPS uninterruptible power supply 1714URI uniform resource identifier 1715URL uniform resource locator 1716URN uniform resource name 1717USART universal synchronous/asynchronous receiver/transmitter 1718USB universal serial bus 1719USWC uncacheable speculative write combining 1720UT unit test 1721UTC coordinated universal time 1722UTF unicode transformation formats 1723UTP unshielded twisted pair 1724UTS UNIX time-sharing 1725UUCP Unix-to-Unix Copy Protocol 1726UUID universally unique identifier 1727UUOC useless use of cat 1728UUT unit under test 1729UX user experience 1730VA vertical alignment 1731VA virtual address 1732VA volt-ampere 1733VAX virtual address extension 1734VB Visual Basic 1735VBR volume boot record 1736VCA variable-gain amplifier 1737VCC common collector voltage 1738VCCP virtual chassis control protocol 1739VCF voltage-controlled filter 1740VCM virtual channel memory 1741VCO voltage-controlled oscillator 1742VCP virtual chassis port 1743VCS version control system 1744VDPAU Video Decode and Presentation API for Unix 1745VES virtual execution system 1746VESA Video Electronics Standards Association 1747VFO variable-frequency oscillator 1748VFS virtual file system 1749VG volume group 1750VGA Video Graphics Array 1751VHDCI very high density cable interconnect 1752VID {VLAN,voltage level} identifier 1753VIM Vi IMproved 1754VIPT virtually indexed, physically tagged 1755VIVT virtually indexed, virtually tagged 1756VLAN virtual local area network 1757VLD variable-length decoding 1758VLIW very long instruction word 1759VLSI very large scale integration 1760VLSM variable length subnet mask 1761VM virtual {machine,memory} 1762VME virtual mode extension 1763VMX vector multimedia extensions 1764VMX virtual machine extensions 1765VNC virtual network computing 1766VOD video on demand 1767VPD vital product data 1768VPN virtual private network 1769VPWS virtual private wire service 1770VR virtual reality 1771VRAM video random access memory 1772VRF virtual routing and forwarding 1773VRM voltage regulator module 1774VROC Virtual RAID On CPU 1775VRRP Virtual Router Redundancy Protocol 1776VSTP VLAN Spanning Tree Protocol 1777VTP VLAN Trunking Protocol 1778VXFS Veritas file system 1779VXVM Veritas volume manager 1780W watt 1781W3C World Wide Web Consortium 1782WAFL write anywhere file layout 1783WAMP Web Application Messaging Protocol 1784WAN wide area network 1785WAP Wireless Application Protocol 1786WAP wireless access point 1787WDM Windows Driver Model 1788WDDM Windows Display Driver Model 1789WDT watchdog timer 1790WEP Wired Equivalent Privacy 1791WFI wait for interrupt 1792WFQ weighted fair queuing 1793WH write hit 1794WHEA Windows hardware error architecture 1795WIFI wireless fidelity 1796WLAN wireless local area network 1797WM write miss 1798WMF Windows meta file 1799WMI Windows Management Instrumentation 1800WOL Wake-on-LAN 1801WOM Wake-on-Modem 1802WOR Wake-on-Ring 1803WORM write once read many 1804WP WordPerfect 1805WP word processor 1806WP write protect 1807WPA Wi-Fi Protected Access 1808WPA2 Wi-Fi Protected Access II 1809WPAD web proxy auto-discovery protocol 1810WPS Wi-Fi Protected Setup 1811WRAM window random access memory 1812WS web services 1813WTC write through caching 1814WTD weighted tail drop 1815WWAN wireless wide area network 1816WWW world wide web 1817WYSIAYG what you see is all you get 1818WYSIWYG what you see is what you get 1819XBAR crossbar 1820XDMCP X Display Manager control protocol 1821XER XML encoding rules 1822XGA Extended Graphics Array 1823XHR XMLHttpRequest 1824XIP execute in place 1825XML Extensible Markup Language 1826XNA XNA's not acronymed 1827XNS Xerox network systems 1828XOR exclusive or 1829XP extreme programming 1830XSI X/Open System Interface 1831XSL extensible stylesheet language 1832XSLT extensible stylesheet language transformations 1833XSS cross site scripting 1834XT extended technology 1835XTACACS extended terminal access controller access-control system 1836XTI X/Open transport interface 1837XUL XML user interface language 1838YACC yet another compiler compiler 1839YAML YAML ain't markup language 1840YANG yet another next generation 1841YAWPFAPR you are welcome; please file a problem report 1842YP Yellow Pages 1843YTD year to date 1844ZAP ZFS attribute processor 1845ZBR zone bit recording 1846ZFOD zero-filled on demand 1847ZFS zettabyte file system 1848ZIF zero insertion force 1849ZIFS zero insertion force socket 1850ZIL ZFS intent log 1851ZMA zone multicast address 1852ZOI zero one infinity 1853ZOI zone of influence 1854ZPL ZFS Posix layer 1855ZVOL ZFS Volume 1856