acronyms.comp revision 1.289
1$NetBSD: acronyms.comp,v 1.289 2019/09/03 21:34:03 sevan Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABI application binary interface 8ABNF augmented backus-naur form 9ABR available bit rate 10ABRT automatic bug reporting tool 11AC alternating current 12ACI adjacent channel interferer 13ACID atomicity, consistency, isolation, durability 14ACK Amsterdam compiler kit 15ACK acknowledgement 16ACL access control list 17ACL active current loop 18ACL asynchronous connection less 19ACP auxiliary control {process,program} 20ACPI advanced configuration and power interface 21ACS access control set 22ACU automatic calling unit 23ADB Apple desktop bus 24ADC analog [to] digital converter 25ADD acronym driven development 26ADDDC adaptive double DRAM device correction 27ADO active data objects 28ADP automatic data processing 29ADPCM adaptive differential pulse code modulation 30ADS alternate data stream 31ADSL asymmetric digital subscriber line 32ADT abstract data type 33AEDC advanced error detection and correction 34AER advanced error reporting 35AES Advanced Encryption Standard 36AFP Apple Filing Protocol 37AFS Andrew File System 38AGC automatic gain control 39AGP accelerated graphics port 40AI analog input 41AI artificial intelligence 42AL access list 43AL active link 44ALE address latch enable 45ALS ambient light sensor 46ALSA advanced Linux sound architecture 47ALU arithmetic and logical unit 48ALUA asymmetric logical unit access 49AM access method 50AM alignment mask 51AM amplitude modulation 52AMD Advanced Micro Devices Inc 53AMDD Agile model-driven development 54AMI alternate mark inversion 55AMP asymmetric multiprocessing 56AMQP advanced message queuing protocol 57AMT active management technology 58AN Arabic number 59ANR application not responding 60ANSI American National Standards Institute 61AO analog output 62AOC add-on card 63AOL Alert-on-LAN 64AOS add or subtract 65AP access point 66AP application processor 67APFS Apple file system 68API application programming interface 69APEI ACPI platform error interface 70APIC advanced programmable interrupt controller 71APIPA automatic private IP addressing 72APM advanced power management 73APM application performance management 74APU accelerated processing unit 75APT advanced persistent threat 76AQM active queue management 77ARAT always running APIC timer 78ARC adaptive replacement cache 79ARC Advanced RISC Computing 80ARC automatic reference counting 81ARM Advanced RISC Machines 82ARP Address Resolution Protocol 83ARPA Advanced Research Projects Agency 84ARQ automatic repeat request 85ARR address range register 86ARU audio response unit 87AS autonomous system 88ASA Adaptive Security Appliance 89ASAN Address Sanitizer 90ASC advanced smart cache 91ASCII American Standard Code for Information Interchange 92ASD agile software development 93ASE advanced software environment 94ASF alert standard format 95ASIC application-specific integrated circuit 96ASK amplitude shift keying 97ASLR address space layout randomization 98ASN autonomous system number 99ASP active server pages 100ASP auxiliary storage pool 101ASPM active state power management 102ASQ automated software quality 103ASR address space register 104ASR Apple software restore 105AST abstract syntax tree 106AST asynchronous system trap 107AT access time 108AT advanced technology 109ATA advanced technology attachment 110ATAPI advanced technology attachment packet interface 111ATC address translation cache 112ATF ARM trusted firmware 113ATF automated testing framework 114ATM asynchronous transfer mode 115ATX advanced technology extended 116AV anti virus 117AVB audio video bridging 118AVL Adelson-Velsky-Landis 119AVX advanced vector extensions 120BA byte align 121BAL basic assembly language 122BAR base address register 123BBS bulletin board system 124BCC blind carbon copy 125BCD binary coded decimal 126BCH boot console handler 127BCR byte count register 128BCS base configuration space 129BD baud 130BDD binary decision diagram 131BDI bit deinterleave 132BDUF big design up front 133BEDO burst extended data output 134BER basic encoding rules 135BER bit error {rate,ratio} 136BERT boot error record table 137BFD bidirectional forwarding detection 138BFD binary {file,format} descriptor 139BFKL big fscking kernel lock 140BFS breadth-first search 141BFT binary file transfer 142BGA ball grid array 143BGP Border Gateway Protocol 144BGPSEC BGP Security 145BIND Berkeley Internet Name Daemon 146BIOS Basic Input/Output System 147BIOS built-in operating system 148BIST built-in self-test 149BIU bus interface unit 150BKDG BIOS and kernel developer's guide 151BLAS basic linear algebra subprograms 152BLC back light control 153BLOB binary large object 154BM bus master 155BMC baseboard management controller 156BMIC bus master interface controller 157BN boundary neutral 158BNF Backus-Naur form 159BO binary output 160BOF beginning of file 161BOM beginning of message 162BOM byte order mark 163BP base pointer 164BP boot processor 165BPB BIOS parameter block 166BPDU bridge protocol data unit 167BPF Berkeley Packet Filter 168BPI bits per inch 169BPM business process modelling 170BPS bits per second 171BPSK binary phase shift keying 172BQS Berkeley quality software 173BRE basic regular expression 174BS backspace 175BS binary sequence 176BSA basic service area 177BSD Berkeley Software Distribution 178BSDP Boot Service Discovery Protocol 179BSF bit scan forward 180BSOD blue screen of death 181BSP binary space partition 182BSP board support package 183BSP bootstrap processor 184BSR bit scan reverse 185BSS basic service set 186BSS block started by symbol 187BSSID basic service set identifier 188BT BitTorrent 189BT Bluetooth 190BT bit test 191BTC bit test [and] complement 192BTM bus transport mechanism 193BTR bit test [and] reset 194BTS bit test [and] set 195BTS bug tracking system 196BW bandwidth 197BWM block-write mode 198BUAG big ugly ASCII graphic 199CA certificate authority 200CACLS change access control lists 201CAD computer-aided design 202CAM computer assisted manufacturing 203CAM conditional access module 204CAM content addressable memory 205CARP Common Address Redundancy Protocol 206CAS column address strobe 207CAS compare and swap 208CAS computer algebra system 209CASE computer aided software engineering 210CAU control access unit 211CAV constant angular velocity 212CBC cipher block chaining 213CBR constant bit rate 214CC carbon copy 215CCD charge coupled device 216CCI co-channel interferer 217CCNUMA cache-coherent non-uniform memory access 218CCTL command completion time limit 219CD cache disable 220CD compact disc 221CDDA compact disc digital audio 222CDL compiler description language 223CDMA code division multiple access 224CDP Cisco Discovery Protocol 225CDRAM cache dynamic random access memory 226CER canonical encoding rules 227CE customer edge 228CF compact flash 229CFB cipher feedback 230CFG context-free grammar 231CFG control-flow graph 232CFI control-flow integrity sanitizer 233CG control gate 234CGA Color Graphics Adapter 235CGI common gateway interface 236CGN Carrier-Grade NAT 237CHAP Challenge-Handshake Authentication Protocol 238CHFS chip file system 239CHS cylinder/head/sector 240CI continuous integration 241CI {common,component} interface 242CIDR Classless Inter-Domain Routing 243CIF common intermediate format 244CIFS Common Internet File System 245CIL common intermediate language 246CIR carrier-to-interference ratio 247CIS contact image sensor 248CISC complex instruction set {computer,computing} 249CJK Chinese, Japanese, [and] Korean 250CLF common log format 251CLI command line interface 252CLI common language infrastructure 253CLR common language runtime 254CLS common language specification 255CLTT closed loop thermal throttling 256CLUT color look-up table 257CLV constant linear velocity 258CM configuration management 259CMA concert multithread architecture 260CMC chassis management controller 261CMC corrected machine check 262CMS {configuration,content,course} management system 263CMI control {management,method} interface 264CMOS complementary metal-oxide-semiconductor 265CMP chip multi-processing 266CMS content management system 267CMYK cyan magenta yellow black 268CN {common,canonical} name 269CNC computer numerical control 270CNR carrier-to-noise ratio 271COA change of authority 272COF current operating frequency 273COFDM coded orthogonal frequency division multiplexing 274COFF common object file format 275COM component object model 276COM computer on module 277COMA cache-only memory architecture 278CORBA common object request broker architecture 279COS class of service 280COW copy-on-write 281CP continuous pilot 282CPB core performance boost 283CPC central processor complex 284CPC cpu performance counters 285CPE common phase error 286CPE common platform enumeration 287CPER common platform error record 288CPG clock pulse generator 289CPI cycles per instruction 290CPL current privilege level 291CPLD complex programmable logic device 292CPP C preprocessor 293CPS characters per second 294CPS continuation-passing style 295CPT command pass through 296CPU central processing unit 297CR carriage return 298CRC cyclic redundancy check 299CRL carrier recovery loop 300CRLF carriage return line feed 301CRT cathode ray tube 302CRUD create, read, update, and delete 303CS cable select 304CS chip select 305CS code segment 306CS computer science 307CSDL {common,conceptual} schema definition language 308CSI channel state information 309CSI common system interface 310CSMA carrier sense multiple access 311CSMA/CA carrier sense multiple access with collision avoidance 312CSMA/CD carrier sense multiple access with collision detection 313CSP communicating sequential processes 314CSP content security policy 315CSP constrain satisfaction problems 316CSP cryptographic service provider 317CSR control [and] status registers 318CSRG Computer Systems Research Group 319CSS cascading style sheets 320CST common spanning tree 321CSV comma-separated values 322CTF compact c type format 323CTM close to metal 324CTR counter [mode] 325CTS clear to send 326CTS common type system 327CUA common user access 328CUT coordinated universal time 329CV control voltage 330CVE common vulnerabilities and exposures 331CVS Concurrent Versions System 332DA destination address 333DAA distributed application architecture 334DAB digital audio broadcasting 335DAC digital [to] analog converter 336DAC discretionary access control 337DAD duplicate address detection 338DANE DNS-based Authentication of Named Entities 339DAO disk at once 340DAP Directory Access Protocol 341DAT digital audio tape 342DAT dynamic acceleration technology 343DB database 344DBA database administrator 345DBA dynamic bandwidth allocation 346DBB data bus buffer 347DBC design by contract 348DBL dynamic buffer limiting 349DBMS database management system 350DBS database server 351DC direct current 352DCC Direct Client-to-Client 353DCC direct cable connect 354DCD data carrier detect 355DCE data control equipment 356DCE distributed computing environment 357DCIM data center infrastructure management 358DCIM digital camera images 359DCL Digital Command Language 360DCOM distributed component object model 361DCOP Desktop COmmunication Protocol 362DCS data collection systems 363DCT discrete cosine transform 364DCU data cache unit 365DDC display data channel 366DDE dynamic data exchange 367DDI device drivers interface 368DDK device driver kit 369DDL data description language 370DDR double data rate 371DDS direct digital sound 372DDWG Digital Display Working Group 373DE debugging extensions 374DE desktop environment 375DEA data encryption algorithm 376DEC Digital Equipment Corporation 377DEK data encryption key 378DEP data execution prevention 379DER distinguished encoding rules 380DES Data Encryption Standard 381DF don't fragment 382DFA deterministic finite automaton 383DFC data flow control 384DFS depth first search 385DFS distributed file system 386DFSAN Data Flow Sanitizer 387DFT diagnostic function test 388DFT discrete Fourier transform 389DGL data generation language 390DH Diffie-Hellman 391DHCP Dynamic Host Configuration Protocol 392DIA dedicated Internet access 393DIFS distributed inter-frame space 394DIMM dual inline memory module 395DIRT design in real time 396DKI driver/kernel interface 397DL diode logic 398DL discrete logarithm 399DL download 400DLCI data link connection identifier 401DLE data link escape 402DLL dynamic link library 403DLP discrete logarithm problem 404DMA direct memory access 405DMI desktop management interface 406DMS document management system 407DMT discrete multitone modulation 408DMU data management layer 409DNARD Digital network appliance reference design 410DND drag and drop 411DNLC directory name lookup cache 412DNS Domain Name System 413DNSSEC DNS Security Extensions 414DOE distributed object environment 415DOF data over fibre 416DOM document object model 417DOS denial of service 418DOS disk operating system 419DP DisplayPort 420DPC deferred procedure call 421DPCM differential pulse code modulation 422DPD dead peer detection 423DPI deep packet inspection 424DPI dots per inch 425DPL descriptor privilege level 426DPS Display PostScript 427DPST display power savings technology 428DRAAS disaster recovery as a service 429DRAM dynamic random access memory 430DRBG deterministic random bit generator 431DRI direct rendering infrastructure 432DRM digital rights management 433DRRS display refresh rate switching 434DS debug store 435DS differentiated services 436DSA digital signature algorithm 437DSAP destination service access point 438DSB double-sideband modulation 439DSCP differentiated services code point 440DSDT differentiated system descriptor table 441DSF device special file 442DSL dataset and snapshot layer 443DSL digital subscriber line 444DSL domain specific language 445DSLAM digital subscriber line access multiplexer 446DSN delivery status notification 447DSO dynamic shared object 448DSP digital signal processor 449DSSS direct sequence spread spectrum 450DTB device tree blob 451DTC device tree compiler 452DTD document type definition 453DTE data terminal equipment 454DTE dumb terminal emulator 455DTL diode-transistor logic 456DTLS datagram transport layer security 457DTS device tree source 458DTS digital thermal sensor 459DUT device under test 460DVB digital video broadcasting 461DVCS distributed version control system 462DVD digital versatile disc 463DVFS dynamic voltage and frequency scaling 464DVI device independent 465DVI Digital Visual Interface 466DVR digital video recorder 467E-XER extended XML encoding rules 468EABI embedded-application binary interface 469EAI Email Address Internationalization 470EAI Enterprise Application Integration 471EAP Extensible Authentication Protocol 472EAPOL EAP over Lan 473EAV entity-attribute-value model 474EAV ethernet audio/video bridging 475EBCDIC Extended Binary Coded Decimal Interchange Code 476EBDA Extended BIOS Data Area 477EBNF extended backus-naur form 478EBR extended boot record 479EC elliptic curve 480ECC elliptic curve cryptography 481ECC error correction code 482ECDH elliptic curve Diffie-Hellman 483ECDL elliptic curve discrete logarithm 484ECDLP elliptic curve discrete logarithm problem 485ECDSA elliptic curve digital signature algorithm 486ECL emitter-coupled logic 487ECN explicit congestion notification 488ECP enhanced capability port 489ECS enhanced chip set 490ECS extended configuration space 491EDAC error detection and correction 492EDAT enhanced dynamic acceleration technology 493EdDSA Edwards curve digital signature algorithm 494EDGE explicit data graph execution 495EDID extended display identification data 496EDO extended data out 497EDS electronical data sheet 498EDSAC electronic delay storage automatic calculator 499EDVAC electronic discrete variable automatic computer 500EEE energy efficient ethernet 501EEPROM electrically erasable programmable read only memory 502EFI extensible firmware interface 503EFL emitter follower logic 504EFM eight to fourteen modulation 505EFS extent file system 506EGA Enhanced Graphics Adapter 507EGP exterior gateway protocol 508EH extension header 509EIDE enhanced IDE 510EISA extended industry standard architecture 511EINJ error injection table 512ELF executable and linking format 513ELS entry level system 514EMI electro-magnetic interference 515EMP electro-magnetic pulse 516EMR electro-magnetic radiation 517EMACS Editor MACroS 518ENIAC electronic numerical integrator and computer 519EOF end of file 520EOI end of interrupt 521EOIS end of interactive support 522EOL end of life 523EOL end of line 524EOT end of transmission 525EPIC explicitly parallel instruction computing 526EPP enhanced parallel port 527EPRML extended partial response, maximum likelihood 528EPROM erasable programmable read only memory 529ERC error recovery control 530ERD emergency recovery disk 531ERD entity relationship diagram 532ERE extended regular expression 533ERST error record serialization table 534ESAN Efficiency Sanitizer 535ESB enterprise service bus 536ESDI enhanced small disk interface 537ESDRAM enhanced synchronous dynamic random access memory 538ESI enclosure services interface 539ESS electronic switching system 540ESS extended service set 541ESSID extended service set identifier 542EST enhanced speedstep 543ETL extract, transform, load 544EU execution unit 545EULA end user license agreement 546FAT file allocation table 547FBRAM frame buffer random access memory 548FCIF full common intermediate format 549FCL fiber channel loop 550FCS frame check sequence 551FDC floppy disk controller 552FDD floppy disk drive 553FDDI fiber distributed data interface 554FDE full disk encryption 555FDT flattened device tree 556FEA finite element analysis 557FEC forward error correction 558FET field-effect transistor 559FF finite field 560FF form feed 561FFDH finite-field Diffie-Hellman 562FFH functional fixed hardware 563FFI foreign function interface 564FFM focus follows mouse 565FFS Fast File System 566FFS find first set 567FFT fast Fourier transform 568FG floating gate 569FHSS frequency hop spread spectrum 570FID frequency identifier 571FIFO first in, first out 572FILO first in, last out 573FIPS Federal Information Processing Standards 574FIR fast infrared 575FLOPS floating [point] operations per second 576FLOSS free/libre/open source software 577FM frequency modulation 578FMR false match rate 579FOSS free/open source software 580FPGA field programmable gate array 581FPM fast page mode 582FPR floating point register 583FPU floating point unit 584FQDN fully qualified domain name 585FRR false rejection rate 586FRU field replaceable unit 587FS file system 588FSB front side bus 589FSCK file system check 590FSF Free Software Foundation 591FSK frequency shift keying 592FSM finite-state machine 593FTA fault tree analysis 594FTL flash translation layer 595FTP File Transfer Protocol 596FTPS File Transfer Protocol Secure 597FUS fast user switching 598FWH firmware hub 599FWS folding white space 600GAL generic array logic 601GARP generic attribute registration protocol 602GAS generic address structure 603GC garbage collector 604GCM Galois counter mode 605GCR group-coded recording 606GDI Graphics Device Interface 607GDT global descriptor table 608GECOS general comprehensive operating supervisor 609GEM graphics environment manager 610GEM graphics execution manager 611GENA general event notification architecture 612GHC Glasgow Haskell compiler 613GHES generic hardware error source 614GIC generic interrupt controller 615GID group identifier 616GIF graphics interchange format 617GMCH graphics and memory controller hub 618GNU GNU's Not Unix 619GOP graphics output protocol 620GOT global offset table 621GPE general purpose event 622GPF general protection fault 623GPG GNU Privacy Guard 624GPL [GNU] General Public License 625GPR general purpose register 626GPS generalized processor sharing 627GPT GUID partition table 628GPU graphics processing unit 629GR golden ratio 630GRE generic routing encapsulation 631GSI global system interrupt 632GUI graphical user interface 633GUID globally unique identifier 634GVFS git virtual file system 635HA high availability 636HAL hardware abstraction layer 637HAT hashed array tree 638HATEOAS hypermedia as the engine of application state 639HBA host bus adapter 640HCF halt and catch fire 641HCI host controller interface 642HCI human-computer interaction 643HCL hardware compatibility list 644HDCP High-bandwidth Digital Content Protection 645HDD hard disk drive 646HDL hardware description language 647HDMI High-Definition Multimedia Interface 648HDTV high-definition television 649HECI host embedded controller interface 650HEST hardware error source table 651HEVC high efficiency video coding 652HF high frequency 653HFM highest frequency mode 654HFS hierarchical file system 655HID human interface device 656HKP HTTP Keyserver Protocol 657HLL high-level language 658HMA high memory area 659HMI human-machine interface 660HOOD hierarchical object oriented design 661HP Hewlett-Packard 662HPC high performance computing 663HPET high precision event timer 664HSM hardware security module 665HSM hierarchical storage management 666HT hyper-threading 667HTC hardware thermal control 668HTCC high temperature co-fired ceramic 669HTML HyperText Markup Language 670HTT hyper-threading technology 671HTTP Hypertext Transfer Protocol 672HTTPS Hypertext Transfer Protocol Secure 673HVM hardware virtual machine 674HVDS High-Voltage Differential Signaling 675HWASAN Hardware-assisted Address Sanitizer 676HZ Hertz 677I2O intelligent input/output 678IA information assurance 679IAAS infrastructure as a service 680IANA Internet Assigned Numbers Authority 681IBC iterated block cipher 682IBM International Business Machines 683IBPI international blinking pattern interpretation 684IBS instruction based sampling 685IBSS independent basic service set 686IC integrated circuit 687ICA independent computer architecture 688ICACLS integrity control access control lists 689ICB Internet Citizen's Band 690ICE in-circuit emulator 691ICE internal compiler error 692ICH I/O controller hub 693ICMP Internet Control Message Protocol 694ICT information and communications technology 695ICW initialization command word 696IDA Intel dynamic acceleration 697IDCMP Intuition direct communication message port 698IDCT inverse discrete cosine transform 699IDE integrated development environment 700IDE integrated drive electronics 701IDPS intrusion detection [and] prevention system 702IDRP inter-domain routing protocol 703IDS intrusion detection system 704IDT interrupt descriptor table 705IE Internet Explorer 706IEC International Electrotechnical Commission 707IEEE Institute of Electrical and Electronics Engineers 708IESG Internet Engineering Steering Group 709IETF Internet Engineering Task Force 710IF intermediate frequency 711IFCM isochronous flow control mode 712IFF Interchange File Format 713IFS internal field separator 714IGD Internet gateway device 715IGMP Internet Group Management Protocol 716IGP interior gateway protocol 717IHV independent hardware vendor 718IKE Internet key exchange 719ILM internal loopback mode 720ILOM integrated lights-out management 721ILP instruction level parallelism 722IM instant messaging 723IMAP Internet Message Access Protocol 724IMC integrated memory controller 725IMCR interrupt mode configuration register 726IMR interrupt mask register 727IMS information management system 728IMSI international mobile subscriber identity 729INCITS InterNational Committee for Information Technology Standards 730INODE index node 731IO input/output 732IOCTL input/output control 733IOM input/output managers 734IOMMU input/output memory management unit 735IOT Internet of Things 736IP Internet Protocol 737IP intellectual property 738IPC instructions per cycle 739IPC interprocess communication 740IPCF interprocess communication facility 741IPE integrated programming environment 742IPI intelligent peripheral interface 743IPI interprocessor interrupt 744IPL Initial Program Load 745IPL Interrupt Priority Level 746IPMB Intelligent Platform Management Bus 747IPMI Intelligent Platform Management Interface 748IPNG Internet Protocol, Next Generation 749IPS in-plane switching 750IPS intrusion prevention system 751IPSEC Internet Protocol Security 752IRC Internet Relay Chat 753IRDA infrared data association 754IRDP ICMP Router Discovery Protocol 755IRQ interrupt request 756IRQL interrupt request level 757IRR interrupt request register 758IRTF Internet Research Task Force 759IS information system 760ISA industry standard architecture 761ISA instruction set architecture 762ISE instant secure erase 763ISDN integrated services digital network 764ISI inter-symbol interference 765ISL initial system load 766ISM industrial, scientific, [and] medical 767ISN initial serial number 768ISO International Standards Organization 769ISOC Internet Society 770ISP Internet service provider 771ISR in-service register 772ISR interrupt service routine 773IST internal spanning tree 774IST interrupt stack table 775ISV independent software vendor 776IT information technology 777ITB Intel Turbo Boost 778ITIL information technology infrastructure library 779ITP in-target probe 780ITSM IT service management 781IV initialization vector 782IVT interrupt vector table 783JBOD just a bunch of disks 784JCL Job Control Language 785JFET junction [gate] field-effect transistor 786JIT just in time 787JPEG Joint Photographic Experts Group 788JRE Java Runtime Environment 789JSON JavaScript Object Notation 790JTAG joint test action group 791KASLR kernel address space layout randomization 792KB keyboard 793KB kilobyte 794KBD keyboard 795KBD kilobaud 796KCS keyboard controller style 797KLOC thousand lines of code 798KMS kernel-mode setting 799KPI kernel programming interface 800KVA kernel virtual address 801KVM kernel virtual machine 802KVM kernel virtual memory 803KVM keyboard, video, [and] mouse 804L2CAP link layer control and adaptation protocol 805LAMP Linux Apache MySQL {Perl,PHP,Python} 806LAN local area network 807LAPIC local advanced programmable interrupt controller 808LAR load access rights 809LBA logical block addressing 810LBNF labeled backus-naur form 811LBS location-based service 812LCD liquid crystal display 813LCP link control protocol 814LDA local delivery agent 815LDAP Lightweight Directory Access Protocol 816LDR light-dependent resistor 817LDT local descriptor table 818LE logical extent 819LED light emitting diode 820LELL low energy link layer 821LER label edge router 822LF line feed 823LF low frequency 824LFM lowest frequency mode 825LFN long file names 826LFO low-frequency oscillation 827LFS log-structured file system 828LFU least frequently used 829LHP loop heat pipe 830LIF logical interchange format 831LIFO last in, first out 832LILO LInux LOader 833LILO last in, last out 834LINT local interrupt 835LIR local Internet registry 836LISP LISt Processor 837LISP Locator/ID Separation Protocol 838LKM {Linux,loadable} kernel module 839LKML Linux kernel mailing list 840LL load linked 841LL/SC load linked/store conditional 842LLC logical link control 843LLD low-level design 844LLDD low-level design document 845LLDP link layer discovery protocol 846LLF low level format 847LLMNR link-local multicast name resolution 848LLVM Low Level Virtual Machine 849LM long mode 850LMCE local machine check exception 851LMI local management interface 852LMM link management mode 853LMP link management protocol 854LNO loop nest optimization 855LOC lines of code 856LOM lights-out management 857LPE Linux performance events 858LPC low pin count 859LPS local positioning system 860LRC longitudinal redundancy check 861LRM left-to-right mark 862LRO left-to-right override 863LRU least recently used 864LS link state 865LSAN Leak Sanitizer 866LSB Linux standards base 867LSB least significant {bit,byte} 868LSI large scale integration 869LSL load segment limit 870LSM log structured merge 871LSN Large Scale NAT 872LSN log sequence number 873LSR label switch router 874LTCC low temperature co-fired ceramic 875LTO linear tape-open 876LTO link time optimization 877LTR left to right 878LTR load task register 879LTR letter(-sized paper) 880LTS long term support 881LUA Lua Uppercase Accident 882LUN logical unit number 883LV logical volume 884LVM logical volume management 885LVT local vector table 886LVDS Low-Voltage Differential Signaling 887LWP light-weight process 888LZSS Lempel Ziv Storer Szymanski 889LZW Lempel Ziv Welch 890MAB MAC authentication bypass 891MAC mandatory access control 892MAC {media,medium} access control 893MAC message authentication {check,code} 894MADT multiple APIC descriptor table 895MAMR microwave-assisted magnetic recording 896MB megabyte 897MBA multi-boot agent 898MBR master boot record 899MBS megabits per second 900MC memory controller 901MCA machine check architecture 902MCA MicroChannel architecture 903MCC multiversion concurrency control 904MCE machine check exception 905MCGA Multi-Color Graphics Array 906MCH memory controller hub 907MCLAG multi-chassis link aggregation 908MCM multi-chip module 909MCQ memory controlled queue 910MD machine-dependent 911MD-SAL model-driven service abstraction layer 912MDA mail delivery agent 913MDA Monochrome Display Adapter 914MDC Management Data Clock 915MDI Medium Dependent Interface 916MDI-X Medium Dependent Interface Crossover 917MDIO Management Data Input/Output 918MDMX MIPS Digital Media eXtension 919MDRAM multibank dynamic random access memory 920MESI modified, exclusive, shared, invalid 921MFC merge from current 922MFC Microsoft Foundation Classes 923MFM modified frequency modulation 924MFU most frequently used 925MGCP media gateway control protocol 926MHU message handling unit 927MI machine-independent 928MI machine interface 929MIB management information base 930MIC message integrity {check,code} 931MID mobile Internet device 932MIDI musical instrument digital interface 933MIF management information format 934MII media independent interface 935MIM man in the middle 936MIMD multiple instruction, multiple data 937MIME Multipurpose Internet Mail Extensions 938MIMO multiple input multiple output 939MIPS million instructions per second 940MIPS Microprocessor without Interlocked Pipeline Stages 941MISD multiple instruction, single data 942MIT Massachusetts Institute of Technology 943MITM man in the middle 944ML machine language 945ML machine learning 946ML mailing list 947ML markup language 948ML maximum likelihood 949MLC multi-level cell 950MLD multicast listener discovery 951MLHP micro loop heat pipe 952MMF multi-mode fiber 953MMIC monolithic microwave integrated circuit 954MMIO memory mapped input/output 955MMORPG massive multiplayer online role playing game 956MMRP multiple MAC registration protocol 957MMU memory management unit 958MMX matrix math extension 959MMX multimedia extension 960MMX multiple math extension 961MO magneto-optical 962MOESI modified, owned, exclusive, shared, invalid 963MOF maximum operating frequency 964MOSFET metal-oxide-semiconductor field-effect transistor 965MOSI modified, owned, shared, invalid 966MP multi-platform 967MP multiplayer 968MP {multiprocessing,multiprocessor} 969MPEG moving picture experts group 970MPI message passing interface 971MPLS Multiprotocol Label Switching 972MPP massively parallel processor 973MPS memory pool system 974MPS multiprocessor specification 975MQTT Message Queuing Telemetry Transport 976MR modem ready 977MRO method resolution order 978MRP multiple registration protocol 979MRU most recently used 980MS Microsoft 981MSAN Memory Sanitizer 982MSB most significant {bit,byte} 983MSC message sequence chart 984MSE mean square error 985MSF minutes seconds frames 986MSI message signaled interrupt 987MSI modified, shared, invalid 988MSR {machine state,model-specific} register 989MSS maximum segment size 990MSTP Multiple Spanning Tree Protocol 991MT machine translation 992MTA mail transfer agent 993MTBF mean time between failures 994MTP media transfer protocol 995MTRR memory type range register 996MTTF mean time to failure 997MTU maximum transmission unit 998MUA mail user agent 999MUD multi-user domain 1000MVCC multiversion concurrency control 1001MVR multicast VLAN registration 1002MVRP multiple VLAN registration protocol 1003MWE module width encoding 1004MX mail exchange 1005NACK negative acknowledgement 1006NAK negative acknowledgement 1007NAN not a number 1008NAPT Network Address Port Translation 1009NAS network attached storage 1010NAT network address translation 1011NAV network allocation vector 1012NC numerical control 1013NC-SI network controller sideband interface 1014NCO numerically-controlled oscillator 1015NCP Network Control Protocol 1016NCSI network connectivity status indicator 1017NCQ native command queuing 1018ND neighbor discovery 1019NDFA nondeterministic finite automaton 1020NDIS network driver interface specification 1021NE numeric error 1022NEWS Network extensible Window System 1023NFA nondeterministic finite automaton 1024NFC near-field communication 1025NFCI no functional change intended 1026NFS network file system 1027NFV network function virtualization 1028NIA next instruction address 1029NIC network information center 1030NIC network interface card 1031NIDS network intrusion detection system 1032NIP network interface protocol 1033NIPS network intrusion prevention system 1034NIS network information service 1035NIST National Institute of Standards and Technology 1036NLS native language support 1037NMI non-maskable interrupt 1038NNTP Network News Transfer Protocol 1039NOC network operations center 1040NOP no operation 1041NOS network operating system 1042NP nondeterministic polynomial time 1043NRND not recommended for new designs 1044NRZ non-return to zero 1045NSA nation-state adversary 1046NSA no such agency 1047NSA National Security Agency 1048NTM non-deterministic Turing machine 1049NTP Network Time Protocol 1050NUMA non-uniform memory access 1051NURBS non-uniform rational basis spline 1052NVMM NetBSD Virtual Machine Monitor 1053NVMM non-volatile main memory 1054NVRAM non-volatile random access memory 1055NW not write-through 1056NX no execute 1057OAEP optimal asymmetric encryption padding 1058OAM operations, administration, and {management,maintenance} 1059OBO off by one 1060OBOE off by one error 1061OCL object constraint language 1062OCR optical character recognition 1063ODE offline device environment 1064ODI open data-link interface 1065ODM object data manager 1066ODCM on-demand clock modulation 1067ODT on-die termination 1068OEM original equipment manufacturer 1069OFB output feedback 1070OFDM orthogonal frequency division multiplexing 1071OFET organic field-effect transistor 1072OLAP online analytical processing 1073OLE object linking and embedding 1074OLTP online transaction processing 1075ONFI open nand flash interface 1076OO OpenOffice 1077OO object oriented 1078OOB out of band 1079OOE out of order execution 1080OOM out of memory 1081OOO OpenOffice.org 1082OOP object oriented programming 1083OOPS object oriented programming systems 1084OOSE object oriented software engineering 1085OPM operations per minute 1086OPS operations per second 1087OQL Object Query Language 1088ORB object request broker 1089ORM object-relational mapping 1090OS operating system 1091OSD open source definition 1092OSF open software foundation 1093OSI Open Source Initiative 1094OSI open systems interconnection 1095OSPF open shortest path first 1096OSPM OS power management 1097OSS open sound system 1098OSS open source software 1099OSVW operating system visible workarounds 1100OTP one time password 1101OTP open telecom platform 1102OU organizational unit 1103OUI organizationally unique identifier 1104OWL Web Ontology Language 1105P2P PCI to PCI 1106P2P peer to peer 1107PA phase accumulator 1108PA physical address 1109PAAS platform as a service 1110PAC phase-amplitude converter 1111PAE physical address extension 1112PAGP port aggregation protocol 1113PAL phase alternating line 1114PAL programmable array logic 1115PAM pluggable authentication modules 1116PAM pulse amplitude modulation 1117PAP password authentication protocol 1118PAT page attribute table 1119PAT port address translation 1120PATA parallel ATA 1121PAX portable archive exchange 1122PBE pending break encoding 1123PBE programming by example 1124PC personal computer 1125PC program counter 1126PCB printed circuit board 1127PCB process control block 1128PCB Protocol Control Block 1129PCC Portable C Compiler 1130PCD page-level cache disable 1131PCE path computation element 1132PCE performance-monitor counter enable 1133PCEP Path Computation Element Protocol 1134PCH platform controller hub 1135PCI peripheral component interconnect 1136PCM phase change memory 1137PCM pulse code modulation 1138PCMCIA Personal Computer Memory Card International Association 1139PCP Port Control Protocol 1140PD public domain 1141PDA personal digital assistant 1142PDA pushdown automaton 1143PDAG propositional directed acyclic graph 1144PDB power distribution board 1145PDF portable document format 1146PDM pulse-duration modulation 1147PDN pull-down network 1148PDP page {descriptor,directory} page 1149PDS product data sheet 1150PDU protocol data unit 1151PE protection enable 1152PE provider edge 1153PEAP Protected EAP 1154PECI platform environment control interface 1155PEP protocol extension protocol 1156PER packed encoding rules 1157PFS perfect forward secrecy 1158PGAS partitioned global address space 1159PGE page global enable 1160PGP Pretty Good Privacy 1161PHB PCI host bridge 1162PHP PHP: Hypertext Preprocessor 1163PIC performance instrumentation counters 1164PIC position independent code 1165PIC programmable interrupt controller 1166PICNIC problem in chair, not in computer 1167PID process id 1168PIE position independent executable 1169PIL Priority Interrupt Level 1170PIM personal information manager 1171PIM platform-independent model 1172PIO programmed input/output 1173PIPT physically indexed, physically tagged 1174PIQ prefetch input queue 1175PIT programmable interrupt timer 1176PIV personal identity verification 1177PIX Private Internet eXchange 1178PKCS public-key cryptography standards 1179PKI public key infrastructure 1180PLC programmable logic controller 1181PLD programmable logic device 1182PLL phase locked loop 1183PLRU pseudo LRU 1184PLTM package level thermal management 1185PM power management 1186PM {phase,pulse} modulation 1187PMC performance monitoring counters 1188PME power management event 1189PMEG page map entry group 1190PMI performance monitoring infrastructure 1191PMI platform management interrupt 1192PMIC power management integrated circut 1193PMIO port-mapped input/output 1194PMT photo-multiplier tube 1195PMU performance monitoring units 1196PMU power management unit 1197PNG portable network graphics 1198PNP plug and play 1199POE power over ethernet 1200POF probability of failure 1201POP Post Office Protocol 1202POP power on password 1203POR plan of record 1204POSIX Portable Operating System Interface [for Unix] 1205POST power on self test 1206POTS plain old telephone system 1207POWER Performance Optimization With Enhanced RISC 1208POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1209PP pair programming 1210PPB PCI [to] PCI bridge 1211PPC PowerPC 1212PPC Power Performance Computing 1213PPI pixels per inch 1214PPM pages per minute 1215PPP Point-to-Point Protocol 1216PPPOA Point-to-Point Protocol over ATM 1217PPPOE Point-to-Point Protocol over Ethernet 1218PPR processor programming reference 1219PPT powerpoint 1220PPT punched paper tape 1221PPU physics processing unit 1222PRAM Parameter RAM 1223PRBS pseudorandom bit sequence 1224PRG pseudorandom generator 1225PRF pseudorandom function [family] 1226PRML partial response, maximum likelihood 1227PRN pseudorandom {noise,number} 1228PRNG pseudorandom number generator 1229PROM programmable read only memory 1230PRP pseudorandom permutation 1231PRU Programmable Realtime Unit 1232PS PostScript 1233PSD power spectral density 1234PSE page size extensions 1235PSK phase shift keying 1236PSK pre-shared key 1237PSTN public switched telephone network 1238PSW program status word 1239PTE page table entry 1240PTLA pseudo top level aggregator 1241PTP page table page 1242PTV perceived target value 1243PU processing unit 1244PUC personal unblocking code 1245PUN physical unit number 1246PV physical volume 1247PVC permanent virtual circuit 1248PVG physical volume group 1249PVI protected-mode virtual interrupt 1250PVRST Per-VLAN rapid spanning tree 1251PVST Per-VLAN Spanning Tree 1252PWM pulse width modulation 1253PXE preboot execution environment 1254QA quality assurance 1255QAM quadrature amplitude modulation 1256QAM quality assurance management 1257QBE query by example 1258QC quality control 1259QDI quasi delay insensitive 1260QCIF quarter common intermediate format 1261QOS quality of service 1262QVL qualified vendor list 1263R/O read only 1264R/W read/write 1265RA receiver address 1266RA remote assistance 1267RA resource affinity 1268RA router advertisement 1269RAD rapid application development 1270RADIUS remote authentication dial-in user service 1271RAID redundant array of {independent,inexpensive} disks 1272RAM random access memory 1273RAS reliability, availability and serviceability 1274RAS remote access service 1275RAS restartable atomic sequence 1276RAS row address strobe 1277RBF radial basis function 1278RBNF routing backus-naur form 1279RBT red-black tree 1280RC release candidate 1281RC remote control 1282RC run commands 1283RCS Revision Control System 1284RCS revision control system 1285RCU read, copy, update 1286RDB Rigid Disk Block 1287RDBMS relational database management system 1288RDF Resource Description Framework 1289RDM relational data model 1290RDMA remote direct memory access 1291RDP remote desktop protocol 1292RDRAM Rambus DRAM 1293RE regular expression 1294REPL read, evaluate, print, loop 1295REST representational state transfer 1296RF radio frequency 1297RFB remote frame buffer 1298RFI radio frequency interference 1299RFO request for ownership 1300RFU reserved for future use 1301RGB red green blue 1302RGBA red green blue alpha 1303RGMII reduced gigabit media independent interface 1304RH read hit 1305RHEL Red Hat Enterprise Linux 1306RHL Red Hat Linux 1307RIB routing information base 1308RIFF Resource Interchange File Format 1309RIP Raster Image Processor 1310RIP Routing Information Protocol 1311RIR regional Internet registry 1312RISC reduced instruction set {computer,computing} 1313RKM ROM Kernel Manual 1314RLE run length encoding 1315RLL run length limited 1316RLO right-to-left override 1317RM read miss 1318RMCP Remote Management Control Protocol 1319RMI remote method invocation 1320RMO Relaxed Memory Ordering 1321RMPM rapid memory power management 1322RMS root mean square 1323RMW read, modify, write 1324RNG random number generator 1325ROM read only memory 1326RPC remote procedure call 1327RPKI resource PKI 1328RPL requested privilege level 1329RPM revolutions per minute 1330RPN reverse Polish notation 1331RPVST Rapid Per-VLAN Spanning Tree 1332RR random replacement 1333RR round robin 1334RS relay station 1335RSA Rivest, Shamir, [and] Adleman 1336RSIP Realm Specific IP 1337RSN Robust Secure Network 1338RSS really simple syndication 1339RSS residual sum of squares 1340RSTP Rapid Spanning Tree Protocol 1341RT real time 1342RTC real time clock 1343RTC real time computing 1344RTF rich text format 1345RTL register transfer language 1346RTL resistor-transistor logic 1347RTL right to left 1348RTOS real time operating system 1349RTS request to send 1350RTT round trip time 1351RUP rational unified process 1352RW Rabin-Williams 1353RWM read-write memory 1354RX {receive,receiver} 1355S/PDIF Sony/Philips Digital Interface Format 1356SA security advisory 1357SA security association 1358SA source address 1359SA structured analysis 1360SAAS software as a service 1361SABRE Semi-automated business research environment 1362SACD super audio compact disc 1363SAD security association database 1364SAF-TE SCSI accessed fault-tolerant enclosure 1365SAGE Semi-automated ground environment 1366SAL {service,system} abstraction layer 1367SAM serial access memory 1368SAM sum addressed memory 1369SAML security assertion markup language 1370SAN storage area network 1371SAP service access point 1372SAPIC streamlined advanced programmable interrupt controller 1373SASD structured analysis, structured design 1374SASI Shugart Associates System Interface 1375SASL simple authentication [and] security layer 1376SATA serial advanced technology attachment 1377SAX simple API for XML 1378SB sound blaster 1379SBSA server base system architecture 1380SBU standard build unit 1381SC store conditional 1382SCA source code analyzer 1383SCADA supervisory control and data acquisition 1384SCC single chip cloud 1385SCC source code control 1386SCCP skinny call control protocol 1387SCCS Source Code Control System 1388SCI scalable coherent interface 1389SCI system control interrupt 1390SCM software configuration management 1391SCM source code management 1392SCM storage-class memory 1393SCO synchronous connection orientated 1394SCP secure copy 1395SCP system control processor 1396SCPI system control and power interface 1397SCSI Small Computer System Interface 1398SCTP Stream Control Transmission Protocol 1399SDDC software defined data center 1400SDEI software delegated exception interface 1401SDI symbol deinterleave 1402SDK software development kit 1403SDL Simple Declarative Language 1404SDL Simple Direct-media Layer 1405SDLC {software,system,systems} development life cycle 1406SDN software defined networking 1407SDP Session Description Protocol 1408SDRAM synchronous dynamic random access memory 1409SDS software defined storage 1410SDT syntax-directed translation 1411SEA synchronous external abort 1412SEGV segmentation violation 1413SED self-encrypting drive 1414SED stream editor 1415SEMB serial ATA enclosure management bridge 1416SEO search engine optimization 1417SES SCSI enclosure services 1418SFC sequential function chart 1419SFI simple firmware interface 1420SFI software fault isolation 1421SFTP SSH File Transfer Protocol 1422SFTP Serial File Transfer Protocol 1423SFTP Simple File Transfer Protocol 1424SGI Silicon Graphics, Inc 1425SGI software generated interrupt 1426SGMII serial gigabit media independent interface 1427SGPIO serial general purpose input/output 1428SGRAM synchronous graphics random access memory 1429SHA secure hash algorithm 1430SICP structure and interpretation of computer programs 1431SIDH supersingular isogeny Diffie-Hellman 1432SIEM security information and event management 1433SIF source input format 1434SIFS short inter-frame space 1435SIM subscriber identity module 1436SIMD single instruction, multiple data 1437SIMM single inline memory module 1438SIP Session Initiation Protocol 1439SIR signal-to-interference ratio 1440SIR slow infrared 1441SISD single instruction, single data 1442SLAAC stateless address auto-configuration 1443SLC single-level cell 1444SLDRAM synchronous-link dynamic random access memory 1445SLED single large expensive disk 1446SLI scalable link interface 1447SLI scan-line interleave 1448SLIC system license internal code 1449SLOC source lines of code 1450SLRU segmented LRU 1451SMA smart memory access 1452SMAF system management action field 1453SMAP Simple Mail Access Protocol 1454SMAP supervisor mode access prevention 1455SMART self-monitoring analysis and reporting technology 1456SMB Server Message Block 1457SMB system management bus 1458SMBIOS System Management BIOS 1459SMC system management controller 1460SMD storage module device 1461SMEP supervisor mode execution protection 1462SMF single mode fiber 1463SMI structure of management information 1464SMI system management interrupt 1465SMM system management mode 1466SMP serial management protocol 1467SMP symmetric multiprocessing 1468SMT simultaneous multithreading 1469SMTP Simple Mail Transfer Protocol 1470SMU system management unit 1471SNA systems network architecture 1472SNAP Sub-Network Access Protocol 1473SNIA Storage Networking Industry Association 1474SNMP Simple Network Management Protocol 1475SNR signal-to-noise ratio 1476SOA service oriented architecture 1477SOAP Simple Object Access Protocol 1478SOC system on chip 1479SOF start of frame 1480SOH start of header 1481SOHO small office/home office 1482SOL serial over LAN 1483SOM system on module 1484SP service pack 1485SP stack pointer 1486SPA storage pool allocator 1487SPAN switched port analyzer 1488SPARC scalable processor architecture 1489SPARQL SPARQL Protocol and RDF Query Language 1490SPD security policy database 1491SPD serial presence detect 1492SPDIF Sony/Philips digital interface format 1493SPI serial peripheral interface 1494SPI stateful packet inspection 1495SPL system interrupt priority level 1496SPL spinlock 1497SPMD single process, multiple data 1498SPR special purpose register 1499SPT sectors per track 1500SQA software quality assurance 1501SQCIF sub quarter common intermediate format 1502SQL Structured Query Language 1503SRAM static random access memory 1504SRC sample rate conversion 1505SRP SCSI RDMA protocol 1506SRR shaped round robin 1507SS self-snoop 1508SS stack segment 1509SSA static single assignment 1510SSAP source service access point 1511SSB single-sideband modulation 1512SSC spread spectrum clock 1513SSD solid state drive 1514SSE streaming SIMD extensions 1515SSFDC solid state floppy disc card 1516SSH secure shell 1517SSI server side includes 1518SSID service set identifier 1519SSL secure sockets layer 1520SSP stack smashing protection 1521STC software thermal control 1522STD state transition diagram 1523STM software transactional memory 1524STOMP Streaming Text Oriented Messaging Protocol 1525STP Spanning Tree Protocol 1526STP shielded twisted pair 1527STRG spanning tree root guard 1528SUN Stanford University Network 1529SUS Single Unix Specification 1530SUT system under test 1531SVC switched virtual circuit 1532SVG scalable vector graphics 1533SVGA Super Video Graphics Array 1534SVI {switch,switched} virtual interface 1535SVM secure virtual machine 1536SVM support vector machine 1537SVR System V Release 1538SVS Separate Virtual Space 1539SWF Shockwave Flash 1540SWIG simplified wrapper [and] interface generator 1541SYR symbol timing recovery 1542TA test assertion 1543TA transmitter address 1544TACACS terminal access controller access-control system 1545TAI international atomic time 1546TAO track at once 1547TAOCP The Art of Computer Programming 1548TAP Test Anything Protocol 1549TAS test and set 1550TB terabyte 1551TBNF transitional backus-naur form 1552TCB trace capture buffer 1553TCB trusted computing base 1554TCC thermal control circuit 1555TCL tool command language 1556TCP Transmission Control Protocol 1557TCQ tagged command queueing 1558TDC time [to] digital converter 1559TDD test-driven development 1560TDD time division duplex 1561TDM time division multiplexing 1562TDMA time division multiple access 1563TDOA time difference of arrival 1564TDP thermal design {point,power} 1565TDR time-domain reflectometry 1566TECO Text Editor and Corrector 1567TFT thin film transistor 1568TFTP Trivial File Transfer Protocol 1569TIAS try it and see 1570TIFF tagged image file format 1571TITS try it to see 1572TK temporal key 1573TKIP Temporal Key Integrity Protocol 1574TLA top level aggregator 1575TLB translation lookaside buffer 1576TLD top level domain 1577TLER time-limited error recovery 1578TLI transport layer interface 1579TLS thread local storage 1580TLS transport layer security 1581TM Turing machine 1582TM thermal monitor 1583TMG transmogrifier 1584TMDS transition minimized differential signaling 1585TMO timeout 1586TOD time of day 1587TOS terms of service 1588TOS trusted operating system 1589TOS type of service 1590TP transaction processing 1591TPI tracks per inch 1592TPM transactions per minute 1593TPM trusted platform module 1594TPR task priority register 1595TPS transactions per second 1596TPS transmission parameters signaling 1597TR task register 1598TR token ring 1599TRL timing recovery loop 1600TRNG true random number generator 1601TS terminal services 1602TS time series 1603TS time stamp 1604TS transport stream 1605TSAN Thread Sanitizer 1606TSC time stamp counter 1607TSD time stamp disable 1608TSDB time series database 1609TSL test, set, lock 1610TSO time sharing option 1611TSO Total Store Ordering 1612TSP Time-Stamp Protocol 1613TSP Tunnel Setup Protocol 1614TSP time synchronization protocol 1615TSP traveling salesman problem 1616TSS task state segment 1617TTL time to live 1618TTL transistor-transistor logic 1619TTM translation table maps 1620TTY teletype 1621TUI {terminal,text-based,textual} user interface 1622TX {transmit out,transmitter} 1623TXG transaction group 1624TZ time zone 1625UAC user {access,account} control 1626UAF use-after-free 1627UART universal asynchronous receiver/transmitter 1628UAT user acceptance testing 1629UB undefined behavior 1630UBSAN Undefined Behavior Sanitizer 1631UC uncacheable 1632UCS uniform-cost search 1633UCS unified computing system 1634UCS universal coded character set 1635UDI uniform driver interface 1636UDMA ultra DMA 1637UDO ultra density optical 1638UDP User Datagram Protocol 1639UEFI unified extensible firmware interface 1640UFS Unix File System 1641UGA universal graphics adapter 1642UI unit interval 1643UI user interface 1644UICC universal integrated circuit card 1645UID unique identifier 1646UID user identifier 1647UL upload 1648UMA uniform memory access 1649UMA upper memory area 1650UMB upper memory block 1651UML unified modeling language 1652UMPC ultra-mobile PC 1653UPNP universal plug and play 1654UPS uninterruptible power supply 1655URI uniform resource identifier 1656URL uniform resource locator 1657URN uniform resource name 1658USART universal synchronous/asynchronous receiver/transmitter 1659USB universal serial bus 1660USWC uncacheable speculative write combining 1661UT unit test 1662UTC coordinated universal time 1663UTF unicode transformation formats 1664UTP unshielded twisted pair 1665UUCP Unix-to-Unix Copy Protocol 1666UUID universally unique identifier 1667UUOC useless use of cat 1668UUT unit under test 1669UX user experience 1670VA vertical alignment 1671VA virtual address 1672VA volt-ampere 1673VAX virtual address extension 1674VB Visual Basic 1675VCA variable-gain amplifier 1676VCC common collector voltage 1677VCCP virtual chassis control protocol 1678VCF voltage-controlled filter 1679VCM virtual channel memory 1680VCO voltage-controlled oscillator 1681VCP virtual chassis port 1682VCS version control system 1683VDPAU Video Decode and Presentation API for Unix 1684VES virtual execution system 1685VESA Video Electronics Standards Association 1686VFO variable-frequency oscillator 1687VFS virtual file system 1688VG volume group 1689VGA Video Graphics Array 1690VHDCI very high density cable interconnect 1691VID {VLAN,voltage level} identifier 1692VIM Vi IMproved 1693VIPT virtually indexed, physically tagged 1694VIVT virtually indexed, virtually tagged 1695VLAN virtual local area network 1696VLD variable-length decoding 1697VLIW very long instruction word 1698VLSI very large scale integration 1699VLSM variable length subnet mask 1700VM virtual {machine,memory} 1701VME virtual mode extension 1702VMX vector multimedia extensions 1703VMX virtual machine extensions 1704VNC virtual network computing 1705VOD video on demand 1706VPD vital product data 1707VPN virtual private network 1708VPWS virtual private wire service 1709VR virtual reality 1710VRAM video random access memory 1711VRF virtual routing and forwarding 1712VRM voltage regulator module 1713VROC Virtual RAID On CPU 1714VRRP Virtual Router Redundancy Protocol 1715VSTP VLAN Spanning Tree Protocol 1716VTP VLAN Trunking Protocol 1717VXFS Veritas file sytem 1718VXVM Veritas volume manager 1719W watt 1720W3C World Wide Web Consortium 1721WAFL write anywhere file layout 1722WAMP Web Application Messaging Protocol 1723WAN wide area network 1724WAP Wireless Application Protocol 1725WAP wireless access point 1726WDM Windows Driver Model 1727WDDM Windows Display Driver Model 1728WDT watchdog timer 1729WEP Wired Equivalent Privacy 1730WFI wait for interrupt 1731WFQ weighted fair queuing 1732WH write hit 1733WHEA Windows hardware error architecture 1734WIFI wireless fidelity 1735WLAN wireless local area network 1736WM write miss 1737WMI Windows Management Instrumentation 1738WOL Wake-on-LAN 1739WOM Wake-on-Modem 1740WOR Wake-on-Ring 1741WORM write once read many 1742WP WordPerfect 1743WP word processor 1744WP write protect 1745WPA Wi-Fi Protected Access 1746WPA2 Wi-Fi Protected Access II 1747WPAD web proxy auto-discovery protocol 1748WPS Wi-Fi Protected Setup 1749WRAM window random access memory 1750WS web services 1751WTC write through caching 1752WTD weighted tail drop 1753WWAN wireless wide area network 1754WWW world wide web 1755WYSIAYG what you see is all you get 1756WYSIWYG what you see is what you get 1757XBAR crossbar 1758XDMCP X Display Manager control protocol 1759XER XML encoding rules 1760XGA Extended Graphics Array 1761XHR XMLHttpRequest 1762XIP execute in place 1763XML Extensible Markup Language 1764XNA XNA's not acronymed 1765XNS Xerox network systems 1766XOR exclusive or 1767XP extreme programming 1768XSI X/Open System Interface 1769XSL extensible stylesheet language 1770XSLT extensible stylesheet language transformations 1771XSS cross site scripting 1772XT extended technology 1773XTACACS extended terminal access controller access-control system 1774XTI X/Open transport interface 1775XUL XML user interface language 1776YACC yet another compiler compiler 1777YAML YAML ain't markup language 1778YANG yet another next generation 1779YAWPFAPR you are welcome; please file a problem report 1780YP Yellow Pages 1781YTD year to date 1782ZAP ZFS attribute processor 1783ZBR zone bit recording 1784ZFOD zero-filled on demand 1785ZFS zettabyte file system 1786ZIF zero insertion force 1787ZIFS zero insertion force socket 1788ZIL ZFS intent log 1789ZMA zone multicast address 1790ZOI zero one infinity 1791ZOI zone of influence 1792ZPL ZFS Posix layer 1793ZVOL ZFS Volume 1794