acronyms.comp revision 1.326
1$NetBSD: acronyms.comp,v 1.326 2022/02/10 20:49:39 fcambus 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 1104ODMR on-demand mail relay 1105ODT on-die termination 1106OEM original equipment manufacturer 1107OFB output feedback 1108OFDM orthogonal frequency division multiplexing 1109OFET organic field-effect transistor 1110OLAP online analytical processing 1111OLE object linking and embedding 1112OLTP online transaction processing 1113ONFI open nand flash interface 1114OO OpenOffice 1115OO object oriented 1116OOB out of band 1117OOE out of order execution 1118OOM out of memory 1119OOO OpenOffice.org 1120OOP object oriented programming 1121OOPS object oriented programming systems 1122OOSE object oriented software engineering 1123OPM operations per minute 1124OPS operations per second 1125OQL Object Query Language 1126ORB object request broker 1127ORM object-relational mapping 1128OS operating system 1129OSD object-based storage device 1130OSD open source definition 1131OSF open software foundation 1132OSI Open Source Initiative 1133OSI open systems interconnection 1134OSPF open shortest path first 1135OSPM OS power management 1136OSS open sound system 1137OSS open source software 1138OSVW operating system visible workarounds 1139OTP one time password 1140OTP open telecom platform 1141OU organizational unit 1142OUI organizationally unique identifier 1143OWASP Open Web Application Security Project 1144OWL Web Ontology Language 1145P2P PCI to PCI 1146P2P peer to peer 1147PA phase accumulator 1148PA physical address 1149PAAS platform as a service 1150PAC phase-amplitude converter 1151PAE physical address extension 1152PAGP port aggregation protocol 1153PAL phase alternating line 1154PAL programmable array logic 1155PAM pluggable authentication modules 1156PAM pulse amplitude modulation 1157PAP password authentication protocol 1158PAT page attribute table 1159PAT port address translation 1160PATA parallel ATA 1161PAX portable archive exchange 1162PBE pending break encoding 1163PBE programming by example 1164PBR partition boot record 1165PBX private branch exchange 1166PC personal computer 1167PC program counter 1168PCB printed circuit board 1169PCB process control block 1170PCB Protocol Control Block 1171PCBC propagating cipher block chaining 1172PCC Portable C Compiler 1173PCD page-level cache disable 1174PCE path computation element 1175PCE performance-monitor counter enable 1176PCEP Path Computation Element Protocol 1177PCH platform controller hub 1178PCI peripheral component interconnect 1179PCM phase change memory 1180PCM pulse code modulation 1181PCMCIA Personal Computer Memory Card International Association 1182PCP Port Control Protocol 1183PD public domain 1184PDA personal digital assistant 1185PDA pushdown automaton 1186PDAG propositional directed acyclic graph 1187PDB power distribution board 1188PDF portable document format 1189PDM pulse-duration modulation 1190PDN pull-down network 1191PDP page {descriptor,directory} page 1192PDS product data sheet 1193PDU protocol data unit 1194PE protection enable 1195PE provider edge 1196PEAP Protected EAP 1197PECI platform environment control interface 1198PEP protocol extension protocol 1199PER packed encoding rules 1200PFS perfect forward secrecy 1201PGAS partitioned global address space 1202PGE page global enable 1203PGP Pretty Good Privacy 1204PHB PCI host bridge 1205PHP PHP: Hypertext Preprocessor 1206PIC performance instrumentation counters 1207PIC position independent code 1208PIC programmable interrupt controller 1209PICNIC problem in chair, not in computer 1210PID process id 1211PIE position independent executable 1212PIL Priority Interrupt Level 1213PIM personal information manager 1214PIM platform-independent model 1215PIO programmed input/output 1216PIPT physically indexed, physically tagged 1217PIQ prefetch input queue 1218PIT programmable interrupt timer 1219PIV personal identity verification 1220PIX Private Internet eXchange 1221PKCS public-key cryptography standards 1222PKI public key infrastructure 1223PLC programmable logic controller 1224PLD programmable logic device 1225PLL phase locked loop 1226PLRU pseudo LRU 1227PLT procedure linkage table 1228PLTM package level thermal management 1229PM power management 1230PM {phase,pulse} modulation 1231PMC performance monitoring counters 1232PME power management event 1233PMEG page map entry group 1234PMI performance monitoring infrastructure 1235PMI platform management interrupt 1236PMIC power management integrated circut 1237PMIO port-mapped input/output 1238PMT photo-multiplier tube 1239PMU performance monitoring units 1240PMU power management unit 1241PNG portable network graphics 1242PNP plug and play 1243POE power over ethernet 1244POF probability of failure 1245POP Post Office Protocol 1246POP power on password 1247POR plan of record 1248POSIX Portable Operating System Interface [for Unix] 1249POST power on self test 1250POTS plain old telephone system 1251POWER Performance Optimization With Enhanced RISC 1252POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1253PP pair programming 1254PPB PCI [to] PCI bridge 1255PPC PowerPC 1256PPC Power Performance Computing 1257PPI pixels per inch 1258PPM pages per minute 1259PPP Point-to-Point Protocol 1260PPPOA Point-to-Point Protocol over ATM 1261PPPOE Point-to-Point Protocol over Ethernet 1262PPR processor programming reference 1263PPT powerpoint 1264PPT punched paper tape 1265PPU physics processing unit 1266PRAM Parameter RAM 1267PRBS pseudorandom bit sequence 1268PRG pseudorandom generator 1269PRF pseudorandom function [family] 1270PRML partial response, maximum likelihood 1271PRN pseudorandom {noise,number} 1272PRNG pseudorandom number generator 1273PROM programmable read only memory 1274PRP pseudorandom permutation 1275PRU Programmable Realtime Unit 1276PS PostScript 1277PSD power spectral density 1278PSE page size extensions 1279PSK phase shift keying 1280PSK pre-shared key 1281PSTN public switched telephone network 1282PSW program status word 1283PTE page table entry 1284PTLA pseudo top level aggregator 1285PTP page table page 1286PTV perceived target value 1287PU processing unit 1288PUC personal unblocking code 1289PUN physical unit number 1290PV physical volume 1291PVC permanent virtual circuit 1292PVG physical volume group 1293PVI protected-mode virtual interrupt 1294PVRST Per-VLAN rapid spanning tree 1295PVST Per-VLAN Spanning Tree 1296PWM pulse width modulation 1297PXE preboot execution environment 1298QA quality assurance 1299QAM quadrature amplitude modulation 1300QAM quality assurance management 1301QBE query by example 1302QC quality control 1303QDI quasi delay insensitive 1304QCIF quarter common intermediate format 1305QOI quality of implementation 1306QOI quick order interface 1307QOS quality of service 1308QVL qualified vendor list 1309R/O read only 1310R/W read/write 1311RA receiver address 1312RA remote assistance 1313RA resource affinity 1314RA router advertisement 1315RAD rapid application development 1316RADIUS remote authentication dial-in user service 1317RAID redundant array of {independent,inexpensive} disks 1318RAM random access memory 1319RAS reliability, availability and serviceability 1320RAS remote access service 1321RAS restartable atomic sequence 1322RAS row address strobe 1323RBF radial basis function 1324RBNF routing backus-naur form 1325RBT red-black tree 1326RC release candidate 1327RC remote control 1328RC run commands 1329RCS Revision Control System 1330RCS revision control system 1331RCU read, copy, update 1332RDB Rigid Disk Block 1333RDBMS relational database management system 1334RDF Resource Description Framework 1335RDM relational data model 1336RDMA remote direct memory access 1337RDP remote desktop protocol 1338RDRAM Rambus DRAM 1339RE regular expression 1340REPL read, evaluate, print, loop 1341REST representational state transfer 1342RF radio frequency 1343RFB remote frame buffer 1344RFI radio frequency interference 1345RFO request for ownership 1346RFU reserved for future use 1347RGB red green blue 1348RGBA red green blue alpha 1349RGMII reduced gigabit media independent interface 1350RH read hit 1351RHEL Red Hat Enterprise Linux 1352RHL Red Hat Linux 1353RIB routing information base 1354RIFF Resource Interchange File Format 1355RIP Raster Image Processor 1356RIP Routing Information Protocol 1357RIR regional Internet registry 1358RISC reduced instruction set {computer,computing} 1359RKM ROM Kernel Manual 1360RLE run length encoding 1361RLL run length limited 1362RLO right-to-left override 1363RM read miss 1364RMCP Remote Management Control Protocol 1365RMI remote method invocation 1366RMO Relaxed Memory Ordering 1367RMPM rapid memory power management 1368RMS root mean square 1369RMW read, modify, write 1370RNG random number generator 1371ROM read only memory 1372RPC remote procedure call 1373RPG Report Program Generator 1374RPKI resource PKI 1375RPL requested privilege level 1376RPM revolutions per minute 1377RPN reverse Polish notation 1378RPVST Rapid Per-VLAN Spanning Tree 1379RR random replacement 1380RR round robin 1381RS relay station 1382RSA Rivest, Shamir, [and] Adleman 1383RSIP Realm Specific IP 1384RSN Robust Secure Network 1385RSS really simple syndication 1386RSS Receive Side Scaling 1387RSS residual sum of squares 1388RSTP Rapid Spanning Tree Protocol 1389RT real time 1390RTC real time clock 1391RTC real time computing 1392RTF rich text format 1393RTL register transfer language 1394RTL resistor-transistor logic 1395RTL right to left 1396RTOS real time operating system 1397RTP Real-time Transport Protocol 1398RTS request to send 1399RTT round trip time 1400RUP rational unified process 1401RW Rabin-Williams 1402RWM read-write memory 1403RX {receive,receiver} 1404S/PDIF Sony/Philips Digital Interface Format 1405SA security advisory 1406SA security association 1407SA source address 1408SA structured analysis 1409SAAS software as a service 1410SABRE Semi-automated business research environment 1411SACD super audio compact disc 1412SAD security association database 1413SAF-TE SCSI accessed fault-tolerant enclosure 1414SAGE Semi-automated ground environment 1415SAL {service,system} abstraction layer 1416SAM serial access memory 1417SAM sum addressed memory 1418SAML security assertion markup language 1419SAN storage area network 1420SAP service access point 1421SAPIC streamlined advanced programmable interrupt controller 1422SASD structured analysis, structured design 1423SASI Shugart Associates System Interface 1424SASL simple authentication [and] security layer 1425SATA serial advanced technology attachment 1426SAX simple API for XML 1427SB sound blaster 1428SBSA server base system architecture 1429SBU standard build unit 1430SC store conditional 1431SCA source code analyzer 1432SCADA supervisory control and data acquisition 1433SCC single chip cloud 1434SCC source code control 1435SCCP skinny call control protocol 1436SCCS Source Code Control System 1437SCI scalable coherent interface 1438SCI system control interrupt 1439SCIM smart common input method 1440SCM software configuration management 1441SCM source code management 1442SCM storage-class memory 1443SCO synchronous connection orientated 1444SCP secure copy 1445SCP system control processor 1446SCPI system control and power interface 1447SCSI Small Computer System Interface 1448SCTP Stream Control Transmission Protocol 1449SDDC software defined data center 1450SDEI software delegated exception interface 1451SDI symbol deinterleave 1452SDK software development kit 1453SDL Simple Declarative Language 1454SDL Simple Direct-media Layer 1455SDLC {software,system,systems} development life cycle 1456SDN software defined networking 1457SDP Session Description Protocol 1458SDR software defined radio 1459SDRAM synchronous dynamic random access memory 1460SDS software defined storage 1461SDT syntax-directed translation 1462SEA synchronous external abort 1463SEGV segmentation violation 1464SED self-encrypting drive 1465SED stream editor 1466SEMB serial ATA enclosure management bridge 1467SEO search engine optimization 1468SES SCSI enclosure services 1469SFC sequential function chart 1470SFI simple firmware interface 1471SFI software fault isolation 1472SFTP SSH File Transfer Protocol 1473SFTP Serial File Transfer Protocol 1474SFTP Simple File Transfer Protocol 1475SGI Silicon Graphics, Inc 1476SGI software generated interrupt 1477SGMII serial gigabit media independent interface 1478SGPIO serial general purpose input/output 1479SGRAM synchronous graphics random access memory 1480SHA secure hash algorithm 1481SICP structure and interpretation of computer programs 1482SIDH supersingular isogeny Diffie-Hellman 1483SIEM security information and event management 1484SIF source input format 1485SIFS short inter-frame space 1486SIM subscriber identity module 1487SIMD single instruction, multiple data 1488SIMM single inline memory module 1489SIP Session Initiation Protocol 1490SIR signal-to-interference ratio 1491SIR slow infrared 1492SISD single instruction, single data 1493SLAAC stateless address auto-configuration 1494SLC single-level cell 1495SLDRAM synchronous-link dynamic random access memory 1496SLED single large expensive disk 1497SLI scalable link interface 1498SLI scan-line interleave 1499SLIC system license internal code 1500SLOC source lines of code 1501SLRU segmented LRU 1502SMA smart memory access 1503SMAF system management action field 1504SMAP Simple Mail Access Protocol 1505SMAP supervisor mode access prevention 1506SMART self-monitoring analysis and reporting technology 1507SMB Server Message Block 1508SMB system management bus 1509SMBIOS System Management BIOS 1510SMC system management controller 1511SMD storage module device 1512SMEP supervisor mode execution protection 1513SMF single mode fiber 1514SMI structure of management information 1515SMI system management interrupt 1516SMM system management mode 1517SMP serial management protocol 1518SMP symmetric multiprocessing 1519SMR shingled magnetic recording 1520SMR state machine replication 1521SMT simultaneous multithreading 1522SMTP Simple Mail Transfer Protocol 1523SMU system management unit 1524SNA systems network architecture 1525SNAP Sub-Network Access Protocol 1526SNIA Storage Networking Industry Association 1527SNMP Simple Network Management Protocol 1528SNR signal-to-noise ratio 1529SOA service oriented architecture 1530SOAP Simple Object Access Protocol 1531SOC system on chip 1532SOF start of frame 1533SOH start of header 1534SOHO small office/home office 1535SOL serial over LAN 1536SOM system on module 1537SP service pack 1538SP stack pointer 1539SPA storage pool allocator 1540SPAN switched port analyzer 1541SPARC scalable processor architecture 1542SPARQL SPARQL Protocol and RDF Query Language 1543SPD security policy database 1544SPD serial presence detect 1545SPDIF Sony/Philips digital interface format 1546SPI serial peripheral interface 1547SPI stateful packet inspection 1548SPL system interrupt priority level 1549SPL spinlock 1550SPMD single process, multiple data 1551SPR special purpose register 1552SPT sectors per track 1553SQA software quality assurance 1554SQCIF sub quarter common intermediate format 1555SQL Structured Query Language 1556SRAM static random access memory 1557SRC sample rate conversion 1558SRP SCSI RDMA protocol 1559SRR shaped round robin 1560SRTP Secure Real-time Transport Protocol 1561SS self-snoop 1562SS stack segment 1563SSA static single assignment 1564SSAP source service access point 1565SSB single-sideband modulation 1566SSC spread spectrum clock 1567SSD solid state drive 1568SSE streaming SIMD extensions 1569SSFDC solid state floppy disc card 1570SSH secure shell 1571SSI server side includes 1572SSID service set identifier 1573SSTP secure socket tunneling protocol 1574SSL secure sockets layer 1575SSP stack smashing protection 1576STC software thermal control 1577STD state transition diagram 1578STM software transactional memory 1579STOMP Streaming Text Oriented Messaging Protocol 1580STP Spanning Tree Protocol 1581STP shielded twisted pair 1582STRG spanning tree root guard 1583SUN Stanford University Network 1584SUS Single Unix Specification 1585SUT system under test 1586SVC switched virtual circuit 1587SVG scalable vector graphics 1588SVGA Super Video Graphics Array 1589SVI {switch,switched} virtual interface 1590SVM secure virtual machine 1591SVM support vector machine 1592SVR System V Release 1593SVS Separate Virtual Space 1594SWF Shockwave Flash 1595SWIG simplified wrapper [and] interface generator 1596SYR symbol timing recovery 1597TA test assertion 1598TA transmitter address 1599TACACS terminal access controller access-control system 1600TAI international atomic time 1601TAO track at once 1602TAOCP The Art of Computer Programming 1603TAP Test Anything Protocol 1604TAS test and set 1605TB terabyte 1606TBNF transitional backus-naur form 1607TCB trace capture buffer 1608TCB trusted computing base 1609TCC thermal control circuit 1610TCL tool command language 1611TCP Transmission Control Protocol 1612TCQ tagged command queueing 1613TDC time [to] digital converter 1614TDD test-driven development 1615TDD time division duplex 1616TDM time division multiplexing 1617TDMA time division multiple access 1618TDOA time difference of arrival 1619TDP thermal design {point,power} 1620TDR time-domain reflectometry 1621TECO Text Editor and Corrector 1622TFT thin film transistor 1623TFTP Trivial File Transfer Protocol 1624TIAS try it and see 1625TIFF tagged image file format 1626TITS try it to see 1627TK temporal key 1628TKIP Temporal Key Integrity Protocol 1629TLA top level aggregator 1630TLB translation lookaside buffer 1631TLD top level domain 1632TLER time-limited error recovery 1633TLI transport layer interface 1634TLS thread local storage 1635TLS transport layer security 1636TM Turing machine 1637TM thermal monitor 1638TMG transmogrifier 1639TMDS transition minimized differential signaling 1640TMO timeout 1641TOD time of day 1642TOE TCP offload engine 1643TOFU trust on first use 1644TOS terms of service 1645TOS trusted operating system 1646TOS type of service 1647TOTP time-based one time password 1648TP transaction processing 1649TPI tracks per inch 1650TPM transactions per minute 1651TPM trusted platform module 1652TPR task priority register 1653TPS transactions per second 1654TPS transmission parameters signaling 1655TR task register 1656TR token ring 1657TRL timing recovery loop 1658TRNG true random number generator 1659TS terminal services 1660TS time series 1661TS time stamp 1662TS transport stream 1663TSAN Thread Sanitizer 1664TSC time stamp counter 1665TSD time stamp disable 1666TSDB time series database 1667TSL test, set, lock 1668TSO time sharing option 1669TSO TCP segmentation offload 1670TSO Total Store Ordering 1671TSP Time-Stamp Protocol 1672TSP Tunnel Setup Protocol 1673TSP time synchronization protocol 1674TSP traveling salesman problem 1675TSS task state segment 1676TSV tab-separated values 1677TTL time to live 1678TTL transistor-transistor logic 1679TTM translation table maps 1680TTY teletype 1681TUI {terminal,text-based,textual} user interface 1682TX {transmit out,transmitter} 1683TXG transaction group 1684TZ time zone 1685UAC user {access,account} control 1686UAF use-after-free 1687UART universal asynchronous receiver/transmitter 1688UAT user acceptance testing 1689UB undefined behavior 1690UBSAN Undefined Behavior Sanitizer 1691UC uncacheable 1692UCS uniform-cost search 1693UCS unified computing system 1694UCS universal coded character set 1695UDI uniform driver interface 1696UDMA ultra DMA 1697UDO ultra density optical 1698UDP User Datagram Protocol 1699UEFI unified extensible firmware interface 1700UFO UDP fragmentation offload 1701UFS Unix File System 1702UGA universal graphics adapter 1703UI unit interval 1704UI user interface 1705UICC universal integrated circuit card 1706UID unique identifier 1707UID user identifier 1708UL upload 1709UMA uniform memory access 1710UMA upper memory area 1711UMB upper memory block 1712UML unified modeling language 1713UMPC ultra-mobile PC 1714UPNP universal plug and play 1715UPS uninterruptible power supply 1716URI uniform resource identifier 1717URL uniform resource locator 1718URN uniform resource name 1719USART universal synchronous/asynchronous receiver/transmitter 1720USB universal serial bus 1721USWC uncacheable speculative write combining 1722UT unit test 1723UTC coordinated universal time 1724UTF unicode transformation formats 1725UTP unshielded twisted pair 1726UTS UNIX time-sharing 1727UUCP Unix-to-Unix Copy Protocol 1728UUID universally unique identifier 1729UUOC useless use of cat 1730UUT unit under test 1731UX user experience 1732VA vertical alignment 1733VA virtual address 1734VA volt-ampere 1735VAX virtual address extension 1736VB Visual Basic 1737VBR volume boot record 1738VCA variable-gain amplifier 1739VCC common collector voltage 1740VCCP virtual chassis control protocol 1741VCF voltage-controlled filter 1742VCM virtual channel memory 1743VCO voltage-controlled oscillator 1744VCP virtual chassis port 1745VCS version control system 1746VDPAU Video Decode and Presentation API for Unix 1747VES virtual execution system 1748VESA Video Electronics Standards Association 1749VFO variable-frequency oscillator 1750VFS virtual file system 1751VG volume group 1752VGA Video Graphics Array 1753VHDCI very high density cable interconnect 1754VID {VLAN,voltage level} identifier 1755VIM Vi IMproved 1756VIPT virtually indexed, physically tagged 1757VIVT virtually indexed, virtually tagged 1758VLAN virtual local area network 1759VLD variable-length decoding 1760VLIW very long instruction word 1761VLSI very large scale integration 1762VLSM variable length subnet mask 1763VM virtual {machine,memory} 1764VME virtual mode extension 1765VMX vector multimedia extensions 1766VMX virtual machine extensions 1767VNC virtual network computing 1768VOD video on demand 1769VPD vital product data 1770VPN virtual private network 1771VPWS virtual private wire service 1772VR virtual reality 1773VRAM video random access memory 1774VRF virtual routing and forwarding 1775VRM voltage regulator module 1776VROC Virtual RAID On CPU 1777VRRP Virtual Router Redundancy Protocol 1778VSTP VLAN Spanning Tree Protocol 1779VTP VLAN Trunking Protocol 1780VXFS Veritas file system 1781VXVM Veritas volume manager 1782W watt 1783W3C World Wide Web Consortium 1784WAFL write anywhere file layout 1785WAMP Web Application Messaging Protocol 1786WAN wide area network 1787WAP Wireless Application Protocol 1788WAP wireless access point 1789WDM Windows Driver Model 1790WDDM Windows Display Driver Model 1791WDT watchdog timer 1792WEP Wired Equivalent Privacy 1793WFI wait for interrupt 1794WFQ weighted fair queuing 1795WH write hit 1796WHEA Windows hardware error architecture 1797WIFI wireless fidelity 1798WLAN wireless local area network 1799WM write miss 1800WMF Windows meta file 1801WMI Windows Management Instrumentation 1802WOL Wake-on-LAN 1803WOM Wake-on-Modem 1804WOR Wake-on-Ring 1805WORM write once read many 1806WP WordPerfect 1807WP word processor 1808WP write protect 1809WPA Wi-Fi Protected Access 1810WPA2 Wi-Fi Protected Access II 1811WPAD web proxy auto-discovery protocol 1812WPS Wi-Fi Protected Setup 1813WRAM window random access memory 1814WS web services 1815WTC write through caching 1816WTD weighted tail drop 1817WWAN wireless wide area network 1818WWW world wide web 1819WYSIAYG what you see is all you get 1820WYSIWYG what you see is what you get 1821XBAR crossbar 1822XDMCP X Display Manager control protocol 1823XER XML encoding rules 1824XGA Extended Graphics Array 1825XHR XMLHttpRequest 1826XIP execute in place 1827XML Extensible Markup Language 1828XNA XNA's not acronymed 1829XNS Xerox network systems 1830XOR exclusive or 1831XP extreme programming 1832XSI X/Open System Interface 1833XSL extensible stylesheet language 1834XSLT extensible stylesheet language transformations 1835XSS cross site scripting 1836XT extended technology 1837XTACACS extended terminal access controller access-control system 1838XTI X/Open transport interface 1839XUL XML user interface language 1840YACC yet another compiler compiler 1841YAML YAML ain't markup language 1842YANG yet another next generation 1843YAWPFAPR you are welcome; please file a problem report 1844YP Yellow Pages 1845YTD year to date 1846ZAP ZFS attribute processor 1847ZBR zone bit recording 1848ZFOD zero-filled on demand 1849ZFS zettabyte file system 1850ZIF zero insertion force 1851ZIFS zero insertion force socket 1852ZIL ZFS intent log 1853ZMA zone multicast address 1854ZOI zero one infinity 1855ZOI zone of influence 1856ZPL ZFS Posix layer 1857ZVOL ZFS Volume 1858