acronyms.comp revision 1.304
1$NetBSD: acronyms.comp,v 1.304 2020/05/18 20:28:44 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 120AWDL Apple wireless direct link 121BA byte align 122BAL basic assembly language 123BAR base address register 124BBS bulletin board system 125BCC blind carbon copy 126BCD binary coded decimal 127BCH boot console handler 128BCR byte count register 129BCS base configuration space 130BD baud 131BDD binary decision diagram 132BDI bit deinterleave 133BDUF big design up front 134BEDO burst extended data output 135BER basic encoding rules 136BER bit error {rate,ratio} 137BERT boot error record table 138BFD bidirectional forwarding detection 139BFD binary {file,format} descriptor 140BFKL big fscking kernel lock 141BFS breadth-first search 142BFT binary file transfer 143BGA ball grid array 144BGP Border Gateway Protocol 145BGPSEC BGP Security 146BIND Berkeley Internet Name Daemon 147BIOS Basic Input/Output System 148BIOS built-in operating system 149BIST built-in self-test 150BIU bus interface unit 151BKDG BIOS and kernel developer's guide 152BLAS basic linear algebra subprograms 153BLC back light control 154BLE Bluetooth low energy 155BLOB binary large object 156BM bus master 157BMC baseboard management controller 158BMP basic multilingual plane 159BMP bitmap image file 160BMIC bus master interface controller 161BN boundary neutral 162BNF Backus-Naur form 163BO binary output 164BOF beginning of file 165BOM beginning of message 166BOM byte order mark 167BP base pointer 168BP boot processor 169BPB BIOS parameter block 170BPDU bridge protocol data unit 171BPF Berkeley Packet Filter 172BPI bits per inch 173BPM business process modelling 174BPS bits per second 175BPSK binary phase shift keying 176BQS Berkeley quality software 177BRE basic regular expression 178BS backspace 179BS binary sequence 180BSA basic service area 181BSD Berkeley Software Distribution 182BSDP Boot Service Discovery Protocol 183BSF bit scan forward 184BSOD blue screen of death 185BSP binary space partition 186BSP board support package 187BSP bootstrap processor 188BSR bit scan reverse 189BSS basic service set 190BSS block started by symbol 191BSSID basic service set identifier 192BT BitTorrent 193BT Bluetooth 194BT bit test 195BTC bit test [and] complement 196BTM bus transport mechanism 197BTR bit test [and] reset 198BTS bit test [and] set 199BTS bug tracking system 200BW bandwidth 201BWM block-write mode 202BUAG big ugly ASCII graphic 203CA certificate authority 204CACLS change access control lists 205CAD computer-aided design 206CAM computer assisted manufacturing 207CAM conditional access module 208CAM content addressable memory 209CARP Common Address Redundancy Protocol 210CAS column address strobe 211CAS compare and swap 212CAS computer algebra system 213CASE computer aided software engineering 214CAU control access unit 215CAV constant angular velocity 216CBC cipher block chaining 217CBR constant bit rate 218CC carbon copy 219CCC Chaos Computer Club 220CCD charge coupled device 221CCI co-channel interferer 222CCNUMA cache-coherent non-uniform memory access 223CCTL command completion time limit 224CD cache disable 225CD compact disc 226CDDA compact disc digital audio 227CDL compiler description language 228CDMA code division multiple access 229CDP Cisco Discovery Protocol 230CDRAM cache dynamic random access memory 231CER canonical encoding rules 232CE customer edge 233CF compact flash 234CFB cipher feedback 235CFG context-free grammar 236CFG control-flow graph 237CFI control-flow integrity sanitizer 238CG control gate 239CGA Color Graphics Adapter 240CGI common gateway interface 241CGN Carrier-Grade NAT 242CHAP Challenge-Handshake Authentication Protocol 243CHFS chip file system 244CHS cylinder/head/sector 245CI continuous integration 246CI {common,component} interface 247CIA confidentiality, integrity, availability 248CIDR Classless Inter-Domain Routing 249CIF common intermediate format 250CIFS Common Internet File System 251CIL common intermediate language 252CIR carrier-to-interference ratio 253CIS contact image sensor 254CISC complex instruction set {computer,computing} 255CJK Chinese, Japanese, [and] Korean 256CLF common log format 257CLI command line interface 258CLI common language infrastructure 259CLR common language runtime 260CLS common language specification 261CLTT closed loop thermal throttling 262CLUT color look-up table 263CLV constant linear velocity 264CM configuration management 265CMA concert multithread architecture 266CMC chassis management controller 267CMC corrected machine check 268CMS {configuration,content,course} management system 269CMI control {management,method} interface 270CMOS complementary metal-oxide-semiconductor 271CMP chip multi-processing 272CMS content management system 273CMYK cyan magenta yellow black 274CN {common,canonical} name 275CNC computer numerical control 276CNR carrier-to-noise ratio 277COA change of authority 278COF current operating frequency 279COFDM coded orthogonal frequency division multiplexing 280COFF common object file format 281COM component object model 282COM computer on module 283COMA cache-only memory architecture 284CORBA common object request broker architecture 285COS class of service 286COW copy-on-write 287CP continuous pilot 288CPA chosen-plaintext attack 289CPB core performance boost 290CPC central processor complex 291CPC cpu performance counters 292CPE common phase error 293CPE common platform enumeration 294CPER common platform error record 295CPG clock pulse generator 296CPI cycles per instruction 297CPL current privilege level 298CPLD complex programmable logic device 299CPP C preprocessor 300CPS characters per second 301CPS continuation-passing style 302CPT command pass through 303CPU central processing unit 304CR carriage return 305CRC cyclic redundancy check 306CRL carrier recovery loop 307CRLF carriage return line feed 308CSU C start up 309CRT cathode ray tube 310CRUD create, read, update, and delete 311CS cable select 312CS chip select 313CS code segment 314CS computer science 315CSDL {common,conceptual} schema definition language 316CSI channel state information 317CSI common system interface 318CSMA carrier sense multiple access 319CSMA/CA carrier sense multiple access with collision avoidance 320CSMA/CD carrier sense multiple access with collision detection 321CSP communicating sequential processes 322CSP content security policy 323CSP constrain satisfaction problems 324CSP cryptographic service provider 325CSR control [and] status registers 326CSRG Computer Systems Research Group 327CSS cascading style sheets 328CST common spanning tree 329CSV comma-separated values 330CTF compact c type format 331CTM close to metal 332CTR counter [mode] 333CTS clear to send 334CTS common type system 335CUA common user access 336CUT coordinated universal time 337CV control voltage 338CVE common vulnerabilities and exposures 339CVS Concurrent Versions System 340DA destination address 341DAA distributed application architecture 342DAAP digital audio access protocol 343DAB digital audio broadcasting 344DAC digital [to] analog converter 345DAC discretionary access control 346DAD duplicate address detection 347DANE DNS-based Authentication of Named Entities 348DAO disk at once 349DAP Directory Access Protocol 350DAT digital audio tape 351DAT dynamic acceleration technology 352DB database 353DBA database administrator 354DBA dynamic bandwidth allocation 355DBB data bus buffer 356DBC design by contract 357DBL dynamic buffer limiting 358DBMS database management system 359DBS database server 360DC direct current 361DCC Direct Client-to-Client 362DCC direct cable connect 363DCD data carrier detect 364DCE data control equipment 365DCE distributed computing environment 366DCIM data center infrastructure management 367DCIM digital camera images 368DCL Digital Command Language 369DCOM distributed component object model 370DCOP Desktop COmmunication Protocol 371DCS data collection systems 372DCT discrete cosine transform 373DCU data cache unit 374DDC display data channel 375DDE dynamic data exchange 376DDI device drivers interface 377DDK device driver kit 378DDL data description language 379DDR double data rate 380DDS direct digital sound 381DDWG Digital Display Working Group 382DE debugging extensions 383DE desktop environment 384DEA data encryption algorithm 385DEC Digital Equipment Corporation 386DEK data encryption key 387DEP data execution prevention 388DER distinguished encoding rules 389DES Data Encryption Standard 390DF don't fragment 391DFA deterministic finite automaton 392DFC data flow control 393DFS depth first search 394DFS distributed file system 395DFSAN Data Flow Sanitizer 396DFT diagnostic function test 397DFT discrete Fourier transform 398DGL data generation language 399DGEMM double precision general matrix multiply 400DH Diffie-Hellman 401DHCP Dynamic Host Configuration Protocol 402DIA dedicated Internet access 403DIB device independent bitmap 404DIFS distributed inter-frame space 405DIMM dual inline memory module 406DIRT design in real time 407DKI driver/kernel interface 408DL diode logic 409DL discrete logarithm 410DL download 411DLCI data link connection identifier 412DLE data link escape 413DLL dynamic link library 414DLNA digital living network alliance 415DLP discrete logarithm problem 416DMA direct memory access 417DMI desktop management interface 418DMS document management system 419DMT discrete multitone modulation 420DMU data management layer 421DNARD Digital network appliance reference design 422DND drag and drop 423DNLC directory name lookup cache 424DNS Domain Name System 425DNSSEC DNS Security Extensions 426DOE distributed object environment 427DOF data over fibre 428DOM document object model 429DOS denial of service 430DOS disk operating system 431DP DisplayPort 432DPC deferred procedure call 433DPCM differential pulse code modulation 434DPD dead peer detection 435DPI deep packet inspection 436DPI dots per inch 437DPL descriptor privilege level 438DPS Display PostScript 439DPST display power savings technology 440DRAAS disaster recovery as a service 441DRAM dynamic random access memory 442DRBG deterministic random bit generator 443DRI direct rendering infrastructure 444DRM digital rights management 445DRRS display refresh rate switching 446DS debug store 447DS differentiated services 448DSA digital signature algorithm 449DSAP destination service access point 450DSB double-sideband modulation 451DSCP differentiated services code point 452DSDT differentiated system descriptor table 453DSF device special file 454DSL dataset and snapshot layer 455DSL digital subscriber line 456DSL domain specific language 457DSLAM digital subscriber line access multiplexer 458DSN delivery status notification 459DSO dynamic shared object 460DSP digital signal processor 461DSSS direct sequence spread spectrum 462DTB device tree blob 463DTC device tree compiler 464DTD document type definition 465DTE data terminal equipment 466DTE dumb terminal emulator 467DTL diode-transistor logic 468DTLS datagram transport layer security 469DTS device tree source 470DTS digital thermal sensor 471DUT device under test 472DVB digital video broadcasting 473DVCS distributed version control system 474DVD digital versatile disc 475DVFS dynamic voltage and frequency scaling 476DVI device independent 477DVI Digital Visual Interface 478DVR digital video recorder 479E-XER extended XML encoding rules 480EABI embedded-application binary interface 481EAI Email Address Internationalization 482EAI Enterprise Application Integration 483EAP Extensible Authentication Protocol 484EAPOL EAP over Lan 485EAV entity-attribute-value model 486EAV ethernet audio/video bridging 487EBCDIC Extended Binary Coded Decimal Interchange Code 488EBDA Extended BIOS Data Area 489EBNF extended backus-naur form 490EBR extended boot record 491EC elliptic curve 492ECC elliptic curve cryptography 493ECC error correction code 494ECDH elliptic curve Diffie-Hellman 495ECDL elliptic curve discrete logarithm 496ECDLP elliptic curve discrete logarithm problem 497ECDSA elliptic curve digital signature algorithm 498ECL emitter-coupled logic 499ECN explicit congestion notification 500ECP enhanced capability port 501ECS enhanced chip set 502ECS extended configuration space 503EDAC error detection and correction 504EDAT enhanced dynamic acceleration technology 505EdDSA Edwards curve digital signature algorithm 506EDGE explicit data graph execution 507EDID extended display identification data 508EDO extended data out 509EDS electronical data sheet 510EDSAC electronic delay storage automatic calculator 511EDVAC electronic discrete variable automatic computer 512EEE energy efficient ethernet 513EEPROM electrically erasable programmable read only memory 514EFI extensible firmware interface 515EFL emitter follower logic 516EFM eight to fourteen modulation 517EFS extent file system 518EGA Enhanced Graphics Adapter 519EGP exterior gateway protocol 520EH extension header 521EIDE enhanced IDE 522EISA extended industry standard architecture 523EINJ error injection table 524ELF executable and linking format 525ELS entry level system 526EMI electro-magnetic interference 527EMP electro-magnetic pulse 528EMR electro-magnetic radiation 529EMACS Editor MACroS 530ENIAC electronic numerical integrator and computer 531EOF end of file 532EOI end of interrupt 533EOIS end of interactive support 534EOL end of life 535EOL end of line 536EOT end of transmission 537EPIC explicitly parallel instruction computing 538EPP enhanced parallel port 539EPRML extended partial response, maximum likelihood 540EPROM erasable programmable read only memory 541EPT extended page tables 542ERC error recovery control 543ERD emergency recovery disk 544ERD entity relationship diagram 545ERE extended regular expression 546ERST error record serialization table 547ESAN Efficiency Sanitizer 548ESB enterprise service bus 549ESDI enhanced small disk interface 550ESDRAM enhanced synchronous dynamic random access memory 551ESI enclosure services interface 552ESS electronic switching system 553ESS extended service set 554ESSID extended service set identifier 555EST enhanced speedstep 556ETL extract, transform, load 557EU execution unit 558EULA end user license agreement 559FAT file allocation table 560FBRAM frame buffer random access memory 561FCIF full common intermediate format 562FCL fiber channel loop 563FCS frame check sequence 564FDC floppy disk controller 565FDD floppy disk drive 566FDDI fiber distributed data interface 567FDE full disk encryption 568FDT flattened device tree 569FEA finite element analysis 570FEC forward error correction 571FET field-effect transistor 572FF finite field 573FF form feed 574FFDH finite-field Diffie-Hellman 575FFH functional fixed hardware 576FFI foreign function interface 577FFM focus follows mouse 578FFS Fast File System 579FFS find first set 580FFT fast Fourier transform 581FG floating gate 582FHSS frequency hop spread spectrum 583FID frequency identifier 584FIFO first in, first out 585FILO first in, last out 586FIPS Federal Information Processing Standards 587FIR fast infrared 588FLOPS floating [point] operations per second 589FLOSS free/libre/open source software 590FM frequency modulation 591FMR false match rate 592FOSS free/open source software 593FPGA field programmable gate array 594FPM fast page mode 595FPR floating point register 596FPU floating point unit 597FQDN fully qualified domain name 598FRR false rejection rate 599FRU field replaceable unit 600FS file system 601FSB front side bus 602FSCK file system check 603FSF Free Software Foundation 604FSK frequency shift keying 605FSM finite-state machine 606FTA fault tree analysis 607FTL flash translation layer 608FTP File Transfer Protocol 609FTPS File Transfer Protocol Secure 610FUS fast user switching 611FWH firmware hub 612FWS folding white space 613GAL generic array logic 614GARP generic attribute registration protocol 615GAS generic address structure 616GC garbage collector 617GCM Galois counter mode 618GCR group-coded recording 619GDI Graphics Device Interface 620GDT global descriptor table 621GECOS general comprehensive operating supervisor 622GEM graphics environment manager 623GEM graphics execution manager 624GEMM general matrix multiply 625GENA general event notification architecture 626GHC Glasgow Haskell compiler 627GHES generic hardware error source 628GIC generic interrupt controller 629GID group identifier 630GIF graphics interchange format 631GMCH graphics and memory controller hub 632GNU GNU's Not Unix 633GOP graphics output protocol 634GOT global offset table 635GPE general purpose event 636GPF general protection fault 637GPG GNU Privacy Guard 638GPL [GNU] General Public License 639GPR general purpose register 640GPS generalized processor sharing 641GPT GUID partition table 642GPU graphics processing unit 643GR golden ratio 644GRE generic routing encapsulation 645GSI global system interrupt 646GUI graphical user interface 647GUID globally unique identifier 648GVFS git virtual file system 649HA high availability 650HAL hardware abstraction layer 651HAT hashed array tree 652HATEOAS hypermedia as the engine of application state 653HBA host bus adapter 654HCF halt and catch fire 655HCI host controller interface 656HCI human-computer interaction 657HCL hardware compatibility list 658HDCP High-bandwidth Digital Content Protection 659HDD hard disk drive 660HDL hardware description language 661HDMI High-Definition Multimedia Interface 662HDTV high-definition television 663HECI host embedded controller interface 664HEST hardware error source table 665HEVC high efficiency video coding 666HF high frequency 667HFM highest frequency mode 668HFS hierarchical file system 669HID human interface device 670HKP HTTP Keyserver Protocol 671HLL high-level language 672HMA high memory area 673HMI human-machine interface 674HOOD hierarchical object oriented design 675HP Hewlett-Packard 676HPC high performance computing 677HPD hot plug detection 678HPET high precision event timer 679HSM hardware security module 680HSM hierarchical storage management 681HT hyper-threading 682HTC hardware thermal control 683HTCC high temperature co-fired ceramic 684HTML HyperText Markup Language 685HTT hyper-threading technology 686HTTP Hypertext Transfer Protocol 687HTTPS Hypertext Transfer Protocol Secure 688HVM hardware virtual machine 689HVDS High-Voltage Differential Signaling 690HWASAN Hardware-assisted Address Sanitizer 691HZ Hertz 692I2O intelligent input/output 693IA information assurance 694IAAS infrastructure as a service 695IANA Internet Assigned Numbers Authority 696IBC iterated block cipher 697IBM International Business Machines 698IBPI international blinking pattern interpretation 699IBS instruction based sampling 700IBSS independent basic service set 701IC integrated circuit 702ICA independent computer architecture 703ICACLS integrity control access control lists 704ICB Internet Citizen's Band 705ICE in-circuit emulator 706ICE internal compiler error 707ICH I/O controller hub 708ICMP Internet Control Message Protocol 709ICT information and communications technology 710ICW initialization command word 711IDA Intel dynamic acceleration 712IDCMP Intuition direct communication message port 713IDCT inverse discrete cosine transform 714IDE integrated development environment 715IDE integrated drive electronics 716IDPS intrusion detection [and] prevention system 717IDRP inter-domain routing protocol 718IDS intrusion detection system 719IDT interrupt descriptor table 720IE Internet Explorer 721IEC International Electrotechnical Commission 722IEEE Institute of Electrical and Electronics Engineers 723IESG Internet Engineering Steering Group 724IETF Internet Engineering Task Force 725IF intermediate frequency 726IFCM isochronous flow control mode 727IFF Interchange File Format 728IFS internal field separator 729IGD Internet gateway device 730IGMP Internet Group Management Protocol 731IGP interior gateway protocol 732IHV independent hardware vendor 733IKE Internet key exchange 734ILM internal loopback mode 735ILOM integrated lights-out management 736ILP instruction level parallelism 737IM instant messaging 738IMAP Internet Message Access Protocol 739IMC integrated memory controller 740IMCR interrupt mode configuration register 741IMR interrupt mask register 742IMS information management system 743IMSI international mobile subscriber identity 744INCITS InterNational Committee for Information Technology Standards 745INODE index node 746IO input/output 747IOCTL input/output control 748IOM input/output managers 749IOMMU input/output memory management unit 750IOT Internet of Things 751IP Internet Protocol 752IP intellectual property 753IPC instructions per cycle 754IPC interprocess communication 755IPCF interprocess communication facility 756IPE integrated programming environment 757IPI intelligent peripheral interface 758IPI interprocessor interrupt 759IPL Initial Program Load 760IPL Interrupt Priority Level 761IPMB Intelligent Platform Management Bus 762IPMI Intelligent Platform Management Interface 763IPNG Internet Protocol, Next Generation 764IPS in-plane switching 765IPS intrusion prevention system 766IPSEC Internet Protocol Security 767IRC Internet Relay Chat 768IRDA infrared data association 769IRDP ICMP Router Discovery Protocol 770IRQ interrupt request 771IRQL interrupt request level 772IRR interrupt request register 773IRTF Internet Research Task Force 774IS information system 775ISA industry standard architecture 776ISA instruction set architecture 777ISE instant secure erase 778ISDN integrated services digital network 779ISI inter-symbol interference 780ISL initial system load 781ISM industrial, scientific, [and] medical 782ISMS information system management system 783ISN initial serial number 784ISO International Standards Organization 785ISOC Internet Society 786ISP Internet service provider 787ISR in-service register 788ISR interrupt service routine 789IST internal spanning tree 790IST interrupt stack table 791ISV independent software vendor 792IT information technology 793ITB Intel Turbo Boost 794ITIL information technology infrastructure library 795ITP in-target probe 796ITSM IT service management 797IV initialization vector 798IVT interrupt vector table 799JBOD just a bunch of disks 800JCL Job Control Language 801JFET junction [gate] field-effect transistor 802JIT just in time 803JPEG Joint Photographic Experts Group 804JRE Java Runtime Environment 805JSON JavaScript Object Notation 806JTAG joint test action group 807KASLR kernel address space layout randomization 808KB keyboard 809KB kilobyte 810KBD keyboard 811KBD kilobaud 812KCS keyboard controller style 813KLOC thousand lines of code 814KMS kernel-mode setting 815KPI kernel programming interface 816KVA kernel virtual address 817KVM kernel virtual machine 818KVM kernel virtual memory 819KVM keyboard, video, [and] mouse 820L2CAP link layer control and adaptation protocol 821LAG link aggregation group 822LAMP Linux Apache MySQL {Perl,PHP,Python} 823LAN local area network 824LAPIC local advanced programmable interrupt controller 825LAR load access rights 826LBA logical block addressing 827LBNF labeled backus-naur form 828LBS location-based service 829LCD liquid crystal display 830LCP link control protocol 831LDA local delivery agent 832LDAP Lightweight Directory Access Protocol 833LDR light-dependent resistor 834LDT local descriptor table 835LE logical extent 836LED light emitting diode 837LELL low energy link layer 838LER label edge router 839LF line feed 840LF low frequency 841LFM lowest frequency mode 842LFN long file names 843LFO low-frequency oscillation 844LFS log-structured file system 845LFU least frequently used 846LHP loop heat pipe 847LIF logical interchange format 848LIFO last in, first out 849LILO LInux LOader 850LILO last in, last out 851LINT local interrupt 852LIR local Internet registry 853LISP LISt Processor 854LISP Locator/ID Separation Protocol 855LKM {Linux,loadable} kernel module 856LKML Linux kernel mailing list 857LL load linked 858LL/SC load linked/store conditional 859LLC logical link control 860LLD low-level design 861LLDD low-level design document 862LLDP link layer discovery protocol 863LLF low level format 864LLMNR link-local multicast name resolution 865LLVM Low Level Virtual Machine 866LM long mode 867LMCE local machine check exception 868LMI local management interface 869LMM link management mode 870LMP link management protocol 871LNO loop nest optimization 872LOC lines of code 873LOM lights-out management 874LPE Linux performance events 875LPC low pin count 876LPS local positioning system 877LRC longitudinal redundancy check 878LRM left-to-right mark 879LRO left-to-right override 880LRU least recently used 881LS link state 882LSAN Leak Sanitizer 883LSB Linux standards base 884LSB least significant {bit,byte} 885LSI large scale integration 886LSL load segment limit 887LSM log structured merge 888LSN Large Scale NAT 889LSN log sequence number 890LSO large send offload 891LSR label switch router 892LTCC low temperature co-fired ceramic 893LTO linear tape-open 894LTO link time optimization 895LTR left to right 896LTR load task register 897LTR letter(-sized paper) 898LTS long term support 899LUA Lua Uppercase Accident 900LUN logical unit number 901LV logical volume 902LVM logical volume management 903LVT local vector table 904LVDS Low-Voltage Differential Signaling 905LWP light-weight process 906LZSS Lempel Ziv Storer Szymanski 907LZW Lempel Ziv Welch 908MAB MAC authentication bypass 909MAC mandatory access control 910MAC {media,medium} access control 911MAC message authentication {check,code} 912MADT multiple APIC descriptor table 913MAMR microwave-assisted magnetic recording 914MB megabyte 915MBA multi-boot agent 916MBR master boot record 917MBS megabits per second 918MC memory controller 919MCA machine check architecture 920MCA MicroChannel architecture 921MCC multiversion concurrency control 922MCE machine check exception 923MCGA Multi-Color Graphics Array 924MCH memory controller hub 925MCLAG multi-chassis link aggregation group 926MCM multi-chip module 927MCQ memory controlled queue 928MD machine-dependent 929MD-SAL model-driven service abstraction layer 930MDA mail delivery agent 931MDA Monochrome Display Adapter 932MDC Management Data Clock 933MDI Medium Dependent Interface 934MDI-X Medium Dependent Interface Crossover 935MDIO Management Data Input/Output 936MDMX MIPS Digital Media eXtension 937MDRAM multibank dynamic random access memory 938MESI modified, exclusive, shared, invalid 939MFC merge from current 940MFC Microsoft Foundation Classes 941MFM modified frequency modulation 942MFU most frequently used 943MGCP media gateway control protocol 944MHU message handling unit 945MI machine-independent 946MI machine interface 947MIB management information base 948MIC message integrity {check,code} 949MID mobile Internet device 950MIDI musical instrument digital interface 951MIF management information format 952MII media independent interface 953MIM man in the middle 954MIMD multiple instruction, multiple data 955MIME Multipurpose Internet Mail Extensions 956MIMO multiple input multiple output 957MIPS million instructions per second 958MIPS Microprocessor without Interlocked Pipeline Stages 959MISD multiple instruction, single data 960MIT Massachusetts Institute of Technology 961MITM man in the middle 962ML machine language 963ML machine learning 964ML mailing list 965ML markup language 966ML maximum likelihood 967MLAG multi-chassis link aggregation group 968MLC multi-level cell 969MLD multicast listener discovery 970MLHP micro loop heat pipe 971MMF multi-mode fiber 972MMIC monolithic microwave integrated circuit 973MMIO memory mapped input/output 974MMORPG massive multiplayer online role playing game 975MMRP multiple MAC registration protocol 976MMU memory management unit 977MMX matrix math extension 978MMX multimedia extension 979MMX multiple math extension 980MO magneto-optical 981MOESI modified, owned, exclusive, shared, invalid 982MOF maximum operating frequency 983MOSFET metal-oxide-semiconductor field-effect transistor 984MOSI modified, owned, shared, invalid 985MP multi-platform 986MP multiplayer 987MP {multiprocessing,multiprocessor} 988MPEG moving picture experts group 989MPI message passing interface 990MPLS Multiprotocol Label Switching 991MPP massively parallel processor 992MPS memory pool system 993MPS multiprocessor specification 994MQTT Message Queuing Telemetry Transport 995MR modem ready 996MRO method resolution order 997MRP multiple registration protocol 998MRU most recently used 999MS Microsoft 1000MSAN Memory Sanitizer 1001MSB most significant {bit,byte} 1002MSC message sequence chart 1003MSE mean square error 1004MSF minutes seconds frames 1005MSI message signaled interrupt 1006MSI modified, shared, invalid 1007MSR {machine state,model-specific} register 1008MSS maximum segment size 1009MSTP Multiple Spanning Tree Protocol 1010MT machine translation 1011MTA mail transfer agent 1012MTBF mean time between failures 1013MTP media transfer protocol 1014MTRR memory type range register 1015MTTF mean time to failure 1016MTU maximum transmission unit 1017MUA mail user agent 1018MUD multi-user domain 1019MVCC multiversion concurrency control 1020MVR multicast VLAN registration 1021MVRP multiple VLAN registration protocol 1022MWE module width encoding 1023MX mail exchange 1024NACK negative acknowledgement 1025NAK negative acknowledgement 1026NAN neighbor awareness networking 1027NAN not a number 1028NAPT Network Address Port Translation 1029NAS network attached storage 1030NAT network address translation 1031NAV network allocation vector 1032NC numerical control 1033NC-SI network controller sideband interface 1034NCO numerically-controlled oscillator 1035NCP Network Control Protocol 1036NCSI network connectivity status indicator 1037NCQ native command queuing 1038ND neighbor discovery 1039NDFA nondeterministic finite automaton 1040NDIS network driver interface specification 1041NE numeric error 1042NEWS Network extensible Window System 1043NFA nondeterministic finite automaton 1044NFC near-field communication 1045NFCI no functional change intended 1046NFS network file system 1047NFV network function virtualization 1048NIA next instruction address 1049NIC network information center 1050NIC network interface card 1051NIDS network intrusion detection system 1052NIP network interface protocol 1053NIPS network intrusion prevention system 1054NIS network information service 1055NIST National Institute of Standards and Technology 1056NLS native language support 1057NMI non-maskable interrupt 1058NNTP Network News Transfer Protocol 1059NOC network operations center 1060NOP no operation 1061NOS network operating system 1062NP nondeterministic polynomial time 1063NRND not recommended for new designs 1064NRZ non-return to zero 1065NSA nation-state adversary 1066NSA no such agency 1067NSA National Security Agency 1068NTM non-deterministic Turing machine 1069NTP Network Time Protocol 1070NUMA non-uniform memory access 1071NURBS non-uniform rational basis spline 1072NVMM NetBSD Virtual Machine Monitor 1073NVMM non-volatile main memory 1074NVRAM non-volatile random access memory 1075NW not write-through 1076NX no execute 1077OAEP optimal asymmetric encryption padding 1078OAM operations, administration, and {management,maintenance} 1079OBO off by one 1080OBOE off by one error 1081OCL object constraint language 1082OCR optical character recognition 1083ODE offline device environment 1084ODI open data-link interface 1085ODM object data manager 1086ODCM on-demand clock modulation 1087ODT on-die termination 1088OEM original equipment manufacturer 1089OFB output feedback 1090OFDM orthogonal frequency division multiplexing 1091OFET organic field-effect transistor 1092OLAP online analytical processing 1093OLE object linking and embedding 1094OLTP online transaction processing 1095ONFI open nand flash interface 1096OO OpenOffice 1097OO object oriented 1098OOB out of band 1099OOE out of order execution 1100OOM out of memory 1101OOO OpenOffice.org 1102OOP object oriented programming 1103OOPS object oriented programming systems 1104OOSE object oriented software engineering 1105OPM operations per minute 1106OPS operations per second 1107OQL Object Query Language 1108ORB object request broker 1109ORM object-relational mapping 1110OS operating system 1111OSD object-based storage device 1112OSD open source definition 1113OSF open software foundation 1114OSI Open Source Initiative 1115OSI open systems interconnection 1116OSPF open shortest path first 1117OSPM OS power management 1118OSS open sound system 1119OSS open source software 1120OSVW operating system visible workarounds 1121OTP one time password 1122OTP open telecom platform 1123OU organizational unit 1124OUI organizationally unique identifier 1125OWASP Open Web Application Security Project 1126OWL Web Ontology Language 1127P2P PCI to PCI 1128P2P peer to peer 1129PA phase accumulator 1130PA physical address 1131PAAS platform as a service 1132PAC phase-amplitude converter 1133PAE physical address extension 1134PAGP port aggregation protocol 1135PAL phase alternating line 1136PAL programmable array logic 1137PAM pluggable authentication modules 1138PAM pulse amplitude modulation 1139PAP password authentication protocol 1140PAT page attribute table 1141PAT port address translation 1142PATA parallel ATA 1143PAX portable archive exchange 1144PBE pending break encoding 1145PBE programming by example 1146PC personal computer 1147PC program counter 1148PCB printed circuit board 1149PCB process control block 1150PCB Protocol Control Block 1151PCBC propagating cipher block chaining 1152PCC Portable C Compiler 1153PCD page-level cache disable 1154PCE path computation element 1155PCE performance-monitor counter enable 1156PCEP Path Computation Element Protocol 1157PCH platform controller hub 1158PCI peripheral component interconnect 1159PCM phase change memory 1160PCM pulse code modulation 1161PCMCIA Personal Computer Memory Card International Association 1162PCP Port Control Protocol 1163PD public domain 1164PDA personal digital assistant 1165PDA pushdown automaton 1166PDAG propositional directed acyclic graph 1167PDB power distribution board 1168PDF portable document format 1169PDM pulse-duration modulation 1170PDN pull-down network 1171PDP page {descriptor,directory} page 1172PDS product data sheet 1173PDU protocol data unit 1174PE protection enable 1175PE provider edge 1176PEAP Protected EAP 1177PECI platform environment control interface 1178PEP protocol extension protocol 1179PER packed encoding rules 1180PFS perfect forward secrecy 1181PGAS partitioned global address space 1182PGE page global enable 1183PGP Pretty Good Privacy 1184PHB PCI host bridge 1185PHP PHP: Hypertext Preprocessor 1186PIC performance instrumentation counters 1187PIC position independent code 1188PIC programmable interrupt controller 1189PICNIC problem in chair, not in computer 1190PID process id 1191PIE position independent executable 1192PIL Priority Interrupt Level 1193PIM personal information manager 1194PIM platform-independent model 1195PIO programmed input/output 1196PIPT physically indexed, physically tagged 1197PIQ prefetch input queue 1198PIT programmable interrupt timer 1199PIV personal identity verification 1200PIX Private Internet eXchange 1201PKCS public-key cryptography standards 1202PKI public key infrastructure 1203PLC programmable logic controller 1204PLD programmable logic device 1205PLL phase locked loop 1206PLRU pseudo LRU 1207PLTM package level thermal management 1208PM power management 1209PM {phase,pulse} modulation 1210PMC performance monitoring counters 1211PME power management event 1212PMEG page map entry group 1213PMI performance monitoring infrastructure 1214PMI platform management interrupt 1215PMIC power management integrated circut 1216PMIO port-mapped input/output 1217PMT photo-multiplier tube 1218PMU performance monitoring units 1219PMU power management unit 1220PNG portable network graphics 1221PNP plug and play 1222POE power over ethernet 1223POF probability of failure 1224POP Post Office Protocol 1225POP power on password 1226POR plan of record 1227POSIX Portable Operating System Interface [for Unix] 1228POST power on self test 1229POTS plain old telephone system 1230POWER Performance Optimization With Enhanced RISC 1231POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1232PP pair programming 1233PPB PCI [to] PCI bridge 1234PPC PowerPC 1235PPC Power Performance Computing 1236PPI pixels per inch 1237PPM pages per minute 1238PPP Point-to-Point Protocol 1239PPPOA Point-to-Point Protocol over ATM 1240PPPOE Point-to-Point Protocol over Ethernet 1241PPR processor programming reference 1242PPT powerpoint 1243PPT punched paper tape 1244PPU physics processing unit 1245PRAM Parameter RAM 1246PRBS pseudorandom bit sequence 1247PRG pseudorandom generator 1248PRF pseudorandom function [family] 1249PRML partial response, maximum likelihood 1250PRN pseudorandom {noise,number} 1251PRNG pseudorandom number generator 1252PROM programmable read only memory 1253PRP pseudorandom permutation 1254PRU Programmable Realtime Unit 1255PS PostScript 1256PSD power spectral density 1257PSE page size extensions 1258PSK phase shift keying 1259PSK pre-shared key 1260PSTN public switched telephone network 1261PSW program status word 1262PTE page table entry 1263PTLA pseudo top level aggregator 1264PTP page table page 1265PTV perceived target value 1266PU processing unit 1267PUC personal unblocking code 1268PUN physical unit number 1269PV physical volume 1270PVC permanent virtual circuit 1271PVG physical volume group 1272PVI protected-mode virtual interrupt 1273PVRST Per-VLAN rapid spanning tree 1274PVST Per-VLAN Spanning Tree 1275PWM pulse width modulation 1276PXE preboot execution environment 1277QA quality assurance 1278QAM quadrature amplitude modulation 1279QAM quality assurance management 1280QBE query by example 1281QC quality control 1282QDI quasi delay insensitive 1283QCIF quarter common intermediate format 1284QOS quality of service 1285QVL qualified vendor list 1286R/O read only 1287R/W read/write 1288RA receiver address 1289RA remote assistance 1290RA resource affinity 1291RA router advertisement 1292RAD rapid application development 1293RADIUS remote authentication dial-in user service 1294RAID redundant array of {independent,inexpensive} disks 1295RAM random access memory 1296RAS reliability, availability and serviceability 1297RAS remote access service 1298RAS restartable atomic sequence 1299RAS row address strobe 1300RBF radial basis function 1301RBNF routing backus-naur form 1302RBT red-black tree 1303RC release candidate 1304RC remote control 1305RC run commands 1306RCS Revision Control System 1307RCS revision control system 1308RCU read, copy, update 1309RDB Rigid Disk Block 1310RDBMS relational database management system 1311RDF Resource Description Framework 1312RDM relational data model 1313RDMA remote direct memory access 1314RDP remote desktop protocol 1315RDRAM Rambus DRAM 1316RE regular expression 1317REPL read, evaluate, print, loop 1318REST representational state transfer 1319RF radio frequency 1320RFB remote frame buffer 1321RFI radio frequency interference 1322RFO request for ownership 1323RFU reserved for future use 1324RGB red green blue 1325RGBA red green blue alpha 1326RGMII reduced gigabit media independent interface 1327RH read hit 1328RHEL Red Hat Enterprise Linux 1329RHL Red Hat Linux 1330RIB routing information base 1331RIFF Resource Interchange File Format 1332RIP Raster Image Processor 1333RIP Routing Information Protocol 1334RIR regional Internet registry 1335RISC reduced instruction set {computer,computing} 1336RKM ROM Kernel Manual 1337RLE run length encoding 1338RLL run length limited 1339RLO right-to-left override 1340RM read miss 1341RMCP Remote Management Control Protocol 1342RMI remote method invocation 1343RMO Relaxed Memory Ordering 1344RMPM rapid memory power management 1345RMS root mean square 1346RMW read, modify, write 1347RNG random number generator 1348ROM read only memory 1349RPC remote procedure call 1350RPKI resource PKI 1351RPL requested privilege level 1352RPM revolutions per minute 1353RPN reverse Polish notation 1354RPVST Rapid Per-VLAN Spanning Tree 1355RR random replacement 1356RR round robin 1357RS relay station 1358RSA Rivest, Shamir, [and] Adleman 1359RSIP Realm Specific IP 1360RSN Robust Secure Network 1361RSS really simple syndication 1362RSS residual sum of squares 1363RSTP Rapid Spanning Tree Protocol 1364RT real time 1365RTC real time clock 1366RTC real time computing 1367RTF rich text format 1368RTL register transfer language 1369RTL resistor-transistor logic 1370RTL right to left 1371RTOS real time operating system 1372RTS request to send 1373RTT round trip time 1374RUP rational unified process 1375RW Rabin-Williams 1376RWM read-write memory 1377RX {receive,receiver} 1378S/PDIF Sony/Philips Digital Interface Format 1379SA security advisory 1380SA security association 1381SA source address 1382SA structured analysis 1383SAAS software as a service 1384SABRE Semi-automated business research environment 1385SACD super audio compact disc 1386SAD security association database 1387SAF-TE SCSI accessed fault-tolerant enclosure 1388SAGE Semi-automated ground environment 1389SAL {service,system} abstraction layer 1390SAM serial access memory 1391SAM sum addressed memory 1392SAML security assertion markup language 1393SAN storage area network 1394SAP service access point 1395SAPIC streamlined advanced programmable interrupt controller 1396SASD structured analysis, structured design 1397SASI Shugart Associates System Interface 1398SASL simple authentication [and] security layer 1399SATA serial advanced technology attachment 1400SAX simple API for XML 1401SB sound blaster 1402SBSA server base system architecture 1403SBU standard build unit 1404SC store conditional 1405SCA source code analyzer 1406SCADA supervisory control and data acquisition 1407SCC single chip cloud 1408SCC source code control 1409SCCP skinny call control protocol 1410SCCS Source Code Control System 1411SCI scalable coherent interface 1412SCI system control interrupt 1413SCM software configuration management 1414SCM source code management 1415SCM storage-class memory 1416SCO synchronous connection orientated 1417SCP secure copy 1418SCP system control processor 1419SCPI system control and power interface 1420SCSI Small Computer System Interface 1421SCTP Stream Control Transmission Protocol 1422SDDC software defined data center 1423SDEI software delegated exception interface 1424SDI symbol deinterleave 1425SDK software development kit 1426SDL Simple Declarative Language 1427SDL Simple Direct-media Layer 1428SDLC {software,system,systems} development life cycle 1429SDN software defined networking 1430SDP Session Description Protocol 1431SDR software defined radio 1432SDRAM synchronous dynamic random access memory 1433SDS software defined storage 1434SDT syntax-directed translation 1435SEA synchronous external abort 1436SEGV segmentation violation 1437SED self-encrypting drive 1438SED stream editor 1439SEMB serial ATA enclosure management bridge 1440SEO search engine optimization 1441SES SCSI enclosure services 1442SFC sequential function chart 1443SFI simple firmware interface 1444SFI software fault isolation 1445SFTP SSH File Transfer Protocol 1446SFTP Serial File Transfer Protocol 1447SFTP Simple File Transfer Protocol 1448SGI Silicon Graphics, Inc 1449SGI software generated interrupt 1450SGMII serial gigabit media independent interface 1451SGPIO serial general purpose input/output 1452SGRAM synchronous graphics random access memory 1453SHA secure hash algorithm 1454SICP structure and interpretation of computer programs 1455SIDH supersingular isogeny Diffie-Hellman 1456SIEM security information and event management 1457SIF source input format 1458SIFS short inter-frame space 1459SIM subscriber identity module 1460SIMD single instruction, multiple data 1461SIMM single inline memory module 1462SIP Session Initiation Protocol 1463SIR signal-to-interference ratio 1464SIR slow infrared 1465SISD single instruction, single data 1466SLAAC stateless address auto-configuration 1467SLC single-level cell 1468SLDRAM synchronous-link dynamic random access memory 1469SLED single large expensive disk 1470SLI scalable link interface 1471SLI scan-line interleave 1472SLIC system license internal code 1473SLOC source lines of code 1474SLRU segmented LRU 1475SMA smart memory access 1476SMAF system management action field 1477SMAP Simple Mail Access Protocol 1478SMAP supervisor mode access prevention 1479SMART self-monitoring analysis and reporting technology 1480SMB Server Message Block 1481SMB system management bus 1482SMBIOS System Management BIOS 1483SMC system management controller 1484SMD storage module device 1485SMEP supervisor mode execution protection 1486SMF single mode fiber 1487SMI structure of management information 1488SMI system management interrupt 1489SMM system management mode 1490SMP serial management protocol 1491SMP symmetric multiprocessing 1492SMT simultaneous multithreading 1493SMTP Simple Mail Transfer Protocol 1494SMU system management unit 1495SNA systems network architecture 1496SNAP Sub-Network Access Protocol 1497SNIA Storage Networking Industry Association 1498SNMP Simple Network Management Protocol 1499SNR signal-to-noise ratio 1500SOA service oriented architecture 1501SOAP Simple Object Access Protocol 1502SOC system on chip 1503SOF start of frame 1504SOH start of header 1505SOHO small office/home office 1506SOL serial over LAN 1507SOM system on module 1508SP service pack 1509SP stack pointer 1510SPA storage pool allocator 1511SPAN switched port analyzer 1512SPARC scalable processor architecture 1513SPARQL SPARQL Protocol and RDF Query Language 1514SPD security policy database 1515SPD serial presence detect 1516SPDIF Sony/Philips digital interface format 1517SPI serial peripheral interface 1518SPI stateful packet inspection 1519SPL system interrupt priority level 1520SPL spinlock 1521SPMD single process, multiple data 1522SPR special purpose register 1523SPT sectors per track 1524SQA software quality assurance 1525SQCIF sub quarter common intermediate format 1526SQL Structured Query Language 1527SRAM static random access memory 1528SRC sample rate conversion 1529SRP SCSI RDMA protocol 1530SRR shaped round robin 1531SS self-snoop 1532SS stack segment 1533SSA static single assignment 1534SSAP source service access point 1535SSB single-sideband modulation 1536SSC spread spectrum clock 1537SSD solid state drive 1538SSE streaming SIMD extensions 1539SSFDC solid state floppy disc card 1540SSH secure shell 1541SSI server side includes 1542SSID service set identifier 1543SSTP secure socket tunneling protocol 1544SSL secure sockets layer 1545SSP stack smashing protection 1546STC software thermal control 1547STD state transition diagram 1548STM software transactional memory 1549STOMP Streaming Text Oriented Messaging Protocol 1550STP Spanning Tree Protocol 1551STP shielded twisted pair 1552STRG spanning tree root guard 1553SUN Stanford University Network 1554SUS Single Unix Specification 1555SUT system under test 1556SVC switched virtual circuit 1557SVG scalable vector graphics 1558SVGA Super Video Graphics Array 1559SVI {switch,switched} virtual interface 1560SVM secure virtual machine 1561SVM support vector machine 1562SVR System V Release 1563SVS Separate Virtual Space 1564SWF Shockwave Flash 1565SWIG simplified wrapper [and] interface generator 1566SYR symbol timing recovery 1567TA test assertion 1568TA transmitter address 1569TACACS terminal access controller access-control system 1570TAI international atomic time 1571TAO track at once 1572TAOCP The Art of Computer Programming 1573TAP Test Anything Protocol 1574TAS test and set 1575TB terabyte 1576TBNF transitional backus-naur form 1577TCB trace capture buffer 1578TCB trusted computing base 1579TCC thermal control circuit 1580TCL tool command language 1581TCP Transmission Control Protocol 1582TCQ tagged command queueing 1583TDC time [to] digital converter 1584TDD test-driven development 1585TDD time division duplex 1586TDM time division multiplexing 1587TDMA time division multiple access 1588TDOA time difference of arrival 1589TDP thermal design {point,power} 1590TDR time-domain reflectometry 1591TECO Text Editor and Corrector 1592TFT thin film transistor 1593TFTP Trivial File Transfer Protocol 1594TIAS try it and see 1595TIFF tagged image file format 1596TITS try it to see 1597TK temporal key 1598TKIP Temporal Key Integrity Protocol 1599TLA top level aggregator 1600TLB translation lookaside buffer 1601TLD top level domain 1602TLER time-limited error recovery 1603TLI transport layer interface 1604TLS thread local storage 1605TLS transport layer security 1606TM Turing machine 1607TM thermal monitor 1608TMG transmogrifier 1609TMDS transition minimized differential signaling 1610TMO timeout 1611TOD time of day 1612TOS terms of service 1613TOS trusted operating system 1614TOS type of service 1615TP transaction processing 1616TPI tracks per inch 1617TPM transactions per minute 1618TPM trusted platform module 1619TPR task priority register 1620TPS transactions per second 1621TPS transmission parameters signaling 1622TR task register 1623TR token ring 1624TRL timing recovery loop 1625TRNG true random number generator 1626TS terminal services 1627TS time series 1628TS time stamp 1629TS transport stream 1630TSAN Thread Sanitizer 1631TSC time stamp counter 1632TSD time stamp disable 1633TSDB time series database 1634TSL test, set, lock 1635TSO time sharing option 1636TSO Total Store Ordering 1637TSP Time-Stamp Protocol 1638TSP Tunnel Setup Protocol 1639TSP time synchronization protocol 1640TSP traveling salesman problem 1641TSS task state segment 1642TTL time to live 1643TTL transistor-transistor logic 1644TTM translation table maps 1645TTY teletype 1646TUI {terminal,text-based,textual} user interface 1647TX {transmit out,transmitter} 1648TXG transaction group 1649TZ time zone 1650UAC user {access,account} control 1651UAF use-after-free 1652UART universal asynchronous receiver/transmitter 1653UAT user acceptance testing 1654UB undefined behavior 1655UBSAN Undefined Behavior Sanitizer 1656UC uncacheable 1657UCS uniform-cost search 1658UCS unified computing system 1659UCS universal coded character set 1660UDI uniform driver interface 1661UDMA ultra DMA 1662UDO ultra density optical 1663UDP User Datagram Protocol 1664UEFI unified extensible firmware interface 1665UFS Unix File System 1666UGA universal graphics adapter 1667UI unit interval 1668UI user interface 1669UICC universal integrated circuit card 1670UID unique identifier 1671UID user identifier 1672UL upload 1673UMA uniform memory access 1674UMA upper memory area 1675UMB upper memory block 1676UML unified modeling language 1677UMPC ultra-mobile PC 1678UPNP universal plug and play 1679UPS uninterruptible power supply 1680URI uniform resource identifier 1681URL uniform resource locator 1682URN uniform resource name 1683USART universal synchronous/asynchronous receiver/transmitter 1684USB universal serial bus 1685USWC uncacheable speculative write combining 1686UT unit test 1687UTC coordinated universal time 1688UTF unicode transformation formats 1689UTP unshielded twisted pair 1690UTS UNIX time-sharing 1691UUCP Unix-to-Unix Copy Protocol 1692UUID universally unique identifier 1693UUOC useless use of cat 1694UUT unit under test 1695UX user experience 1696VA vertical alignment 1697VA virtual address 1698VA volt-ampere 1699VAX virtual address extension 1700VB Visual Basic 1701VCA variable-gain amplifier 1702VCC common collector voltage 1703VCCP virtual chassis control protocol 1704VCF voltage-controlled filter 1705VCM virtual channel memory 1706VCO voltage-controlled oscillator 1707VCP virtual chassis port 1708VCS version control system 1709VDPAU Video Decode and Presentation API for Unix 1710VES virtual execution system 1711VESA Video Electronics Standards Association 1712VFO variable-frequency oscillator 1713VFS virtual file system 1714VG volume group 1715VGA Video Graphics Array 1716VHDCI very high density cable interconnect 1717VID {VLAN,voltage level} identifier 1718VIM Vi IMproved 1719VIPT virtually indexed, physically tagged 1720VIVT virtually indexed, virtually tagged 1721VLAN virtual local area network 1722VLD variable-length decoding 1723VLIW very long instruction word 1724VLSI very large scale integration 1725VLSM variable length subnet mask 1726VM virtual {machine,memory} 1727VME virtual mode extension 1728VMX vector multimedia extensions 1729VMX virtual machine extensions 1730VNC virtual network computing 1731VOD video on demand 1732VPD vital product data 1733VPN virtual private network 1734VPWS virtual private wire service 1735VR virtual reality 1736VRAM video random access memory 1737VRF virtual routing and forwarding 1738VRM voltage regulator module 1739VROC Virtual RAID On CPU 1740VRRP Virtual Router Redundancy Protocol 1741VSTP VLAN Spanning Tree Protocol 1742VTP VLAN Trunking Protocol 1743VXFS Veritas file sytem 1744VXVM Veritas volume manager 1745W watt 1746W3C World Wide Web Consortium 1747WAFL write anywhere file layout 1748WAMP Web Application Messaging Protocol 1749WAN wide area network 1750WAP Wireless Application Protocol 1751WAP wireless access point 1752WDM Windows Driver Model 1753WDDM Windows Display Driver Model 1754WDT watchdog timer 1755WEP Wired Equivalent Privacy 1756WFI wait for interrupt 1757WFQ weighted fair queuing 1758WH write hit 1759WHEA Windows hardware error architecture 1760WIFI wireless fidelity 1761WLAN wireless local area network 1762WM write miss 1763WMF Windows meta file 1764WMI Windows Management Instrumentation 1765WOL Wake-on-LAN 1766WOM Wake-on-Modem 1767WOR Wake-on-Ring 1768WORM write once read many 1769WP WordPerfect 1770WP word processor 1771WP write protect 1772WPA Wi-Fi Protected Access 1773WPA2 Wi-Fi Protected Access II 1774WPAD web proxy auto-discovery protocol 1775WPS Wi-Fi Protected Setup 1776WRAM window random access memory 1777WS web services 1778WTC write through caching 1779WTD weighted tail drop 1780WWAN wireless wide area network 1781WWW world wide web 1782WYSIAYG what you see is all you get 1783WYSIWYG what you see is what you get 1784XBAR crossbar 1785XDMCP X Display Manager control protocol 1786XER XML encoding rules 1787XGA Extended Graphics Array 1788XHR XMLHttpRequest 1789XIP execute in place 1790XML Extensible Markup Language 1791XNA XNA's not acronymed 1792XNS Xerox network systems 1793XOR exclusive or 1794XP extreme programming 1795XSI X/Open System Interface 1796XSL extensible stylesheet language 1797XSLT extensible stylesheet language transformations 1798XSS cross site scripting 1799XT extended technology 1800XTACACS extended terminal access controller access-control system 1801XTI X/Open transport interface 1802XUL XML user interface language 1803YACC yet another compiler compiler 1804YAML YAML ain't markup language 1805YANG yet another next generation 1806YAWPFAPR you are welcome; please file a problem report 1807YP Yellow Pages 1808YTD year to date 1809ZAP ZFS attribute processor 1810ZBR zone bit recording 1811ZFOD zero-filled on demand 1812ZFS zettabyte file system 1813ZIF zero insertion force 1814ZIFS zero insertion force socket 1815ZIL ZFS intent log 1816ZMA zone multicast address 1817ZOI zero one infinity 1818ZOI zone of influence 1819ZPL ZFS Posix layer 1820ZVOL ZFS Volume 1821