acronyms.comp revision 1.165
1$NetBSD: acronyms.comp,v 1.165 2016/05/15 23:54:19 jnemeth 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 8ABR available bit rate 9AC alternating current 10ACI adjacent channel interferer 11ACID atomicity, consistency, isolation, durability 12ACK Amsterdam compiler kit 13ACK acknowledgement 14ACL access control list 15ACL active current loop 16ACP auxillary control {process,program} 17ACPI advanced configuration and power interface 18ACS access control set 19ACU automatic calling unit 20ADB Apple desktop bus 21ADC analog [to] digital converter 22ADD acronym driven development 23ADO active data objects 24ADP automatic data processing 25ADPCM adaptive differential pulse code modulation 26ADS alternate data stream 27ADSL asymmetric digital subscriber line 28ADT abstract data type 29AES Advanced Encryption Standard 30AFS Andrew File System 31AGC automatic gain control 32AGP accelerated graphics port 33AI analog input 34AI artificial intelligence 35AL access list 36AL active link 37ALE address latch enable 38ALS ambient light sensor 39ALU arithmetic and logical unit 40ALUA asymmetric logical unit access 41AM access method 42AM alignment mask 43AM amplitude modulation 44AMI alternate mark inversion 45AMQP advanced message queuing protocol 46AMT active management technology 47AN Arabic number 48ANSI American National Standards Institute 49AO analog output 50AOL Alert-on-LAN 51AOS add or subtract 52AP access point 53AP application processor 54API application programming interface 55APIC advanced programmable interrupt controller 56APIPA automatic private IP addressing 57APT advanced persistent threat 58AQM active queue management 59ARAT always running APIC timer 60ARC adaptive replacement cache 61ARM Advanced RISC Machines 62ARP Address Resolution Protocol 63ARPA Advanced Research Projects Agency 64ARQ automatic repeat request 65ARR address range register 66ARU audio response unit 67AS autonomous system 68ASC advanced smart cache 69ASCII American Standard Code for Information Interchange 70ASD agile software development 71ASE advanced software environment 72ASIC application-specific integrated circuit 73ASK amplitude shif keying 74ASLR address space layout randomization 75ASN autonomous system number 76ASPM active state power management 77ASQ automated software quality 78ASR address space register 79AST abstract syntax tree 80AST asynchronous trap 81AT access time 82AT advanced technology 83ATA advanced technology attachment 84ATAPI advanced technology attachment packet interface 85ATC address translation cache 86ATM asynchronous transfer mode 87ATX advanced technology extended 88AV anti virus 89AVL Adelson-Velsky-Landis 90AVX advanced vector extensions 91BA byte align 92BAL basic assembly language 93BAR base address register 94BBS bulletin board system 95BCC blind carbon copy 96BCD binary coded decimal 97BCR byte count register 98BCS base configuration space 99BD baud 100BDD binary decision diagram 101BDI bit deinterleave 102BDUF big design up front 103BEDO burst extended data output 104BER basic encoding rules 105BER bit error {rate,ratio} 106BFD binary {file,format} descriptor 107BFKL big fscking kernel lock 108BFS breadth-first search 109BFT binary file transfer 110BGA ball grid array 111BGP Border Gateway Protocol 112BGPSEC BGP Security 113BIND Berkeley Internet Name Daemon 114BIOS Basic Input/Output System 115BIOS built-in operating system 116BIST built-in self-test 117BIU bus interface unit 118BKDG BIOS and kernel developer's guide 119BLAS basic linear algebra subprograms 120BLC back light control 121BLOB binary large object 122BM bus master 123BMC baseboard management controller 124BMIC bus master interface controller 125BN boundary neutral 126BNF Backus-Naur form 127BO binary output 128BOF beginning of file 129BOM beginning of message 130BOM byte order mark 131BP base pointer 132BP boot processor 133BPB BIOS parameter block 134BPF Berkeley Packet Filter 135BPI bits per inch 136BPM business process modelling 137BPS bits per second 138BPSK binary phase shift keying 139BQS Berkeley quality software 140BRE basic regular expression 141BS backspace 142BS binary sequence 143BSA basic service area 144BSD Berkeley Software Distribution 145BSF bit scan forward 146BSOD blue screen of death 147BSP binary space partition 148BSP bootstrap processor 149BSR bit scan reverse 150BSS basic service set 151BSS block started by symbol 152BSSID basic service set identifier 153BT BitTorrent 154BT Bluetooth 155BT bit test 156BTC bit test [and] complement 157BTR bit test [and] reset 158BTS bit test [and] set 159BTS bits per second 160BW bandwidth 161BWM block-write mode 162CA certificate authority 163CAD computer-aided design 164CAM computer assisted manufacturing 165CAM conditional access module 166CAM content addressable memory 167CARP Common Address Redundancy Protocol 168CAS column address strobe 169CAS compare and swap 170CAS computer algebra system 171CASE computer aided software engineering 172CAU control access unit 173CAV constant angular velocity 174CBC cipher block chaining 175CBR constant bit rate 176CC carbon coby 177CCD charge coupled device 178CCI co-channel interferer 179CD cache disable 180CD compact disc 181CDDA compact disc digital audio 182CDMA code division multiple access 183CDRAM cache dynamic random access memory 184CER canonical encoding rules 185CF compact flash 186CFG context-free grammar 187CFG control-flow graph 188CG control gate 189CGA Color Graphics Adapter 190CGI common gateway interface 191CGN Carrier-Grade NAT 192CHAP Challenge-Handshake Authentication Protocol 193CHS cylinder/head/sector 194CI continuous integration 195CI {common,component} interface 196CIDR Classless Inter-Domain Routing 197CIFS Common Internet File System 198CIL common intermediate language 199CIR carrier-to-interference ratio 200CIS contact image sensor 201CISC complex instruction set {computer,computing} 202CJK Chinese, Japanese, [and] Korean 203CLF common log format 204CLI command line interface 205CLR common language runtime 206CLTT closed loop thermal throttling 207CLUT color look-up table 208CLV constant linear velocity 209CM configuration management 210CMA concert multithread architecture 211CMI control management interface 212CMI control method interface 213CMOS complementary metal-oxide-semiconductor 214CMP chip multi-processing 215CMS content management system 216CMYK cyan magenta yellow black 217CN {common,canonical} name 218CNC computer numerical control 219CNR carrier-to-noise ratio 220COF current operating frequency 221COFDM coded orthogonal frequency division multiplexing 222COFF common object file format 223COM component object model 224COMA cache-only memory architecture 225CORBA common object request broker architecture 226COW copy-on-write 227CP continuous pilot 228CPB core performance boost 229CPE common phase error 230CPG clock pulse generator 231CPL current privilege level 232CPLD complex programmable logic device 233CPP C preprocessor 234CPS characters per second 235CPT command pass through 236CPU central processing unit 237CR carriage return 238CRC cyclic redundancy check 239CRL carrier recovery loop 240CRLF carriage return line feed 241CRT cathode ray tube 242CS cable select 243CS chip select 244CS code segment 245CS computer science 246CSI channel state information 247CSI common system interface 248CSMA carrier sense multiple access 249CSMA/CA carrier sense multiple access with collision avoidance 250CSMA/CD carrier sense multiple access with collision detection 251CSR control [and] status registers 252CSRG Computer Systems Research Group 253CSS cascading style sheets 254CSV comma-separated values 255CTM close to metal 256CTS clear to send 257CUA common user access 258CUT coordinated universal time 259CV control voltage 260CVS Concurrent Versions System 261DA destination address 262DAA distributed application architecture 263DAB digital audio broadcasting 264DAC digital [to] analog converter 265DAC discretionary access control 266DAD duplicate address detection 267DANE DNS-based Authentication of Named Entities 268DAO disk at once 269DAP Directory Access Protocol 270DAT digital audio tape 271DAT dynamic acceleration technology 272DB database 273DBA database administrator 274DBA dynamic bandwidth allocation 275DBB data bus buffer 276DBC design by contract 277DBL dynamic buffer limiting 278DBMS database management system 279DBS database server 280DC direct current 281DCC Direct Client-to-Client 282DCC direct cable connect 283DCD data carrier detect 284DCE data control equipment 285DCE distributed computing environment 286DCOM distributed component object model 287DCOP Desktop COmmunication Protocol 288DCS data collection systems 289DCT discrete cosine transform 290DCU data cache unit 291DDC display data channel 292DDE dynamic data exchange 293DDK device driver kit 294DDL data description language 295DDR double data rate 296DDS direct digital sound 297DDWG Digital Display Working Group 298DE debugging extensions 299DE desktop environment 300DEA data encryption algorithm 301DEK data encryption key 302DEP data execution prevention 303DER distinguished encoding rules 304DES Data Encryption Standard 305DF don't fragment 306DFA deterministic finite automaton 307DFC data flow control 308DFS depth first search 309DFS distributed file system 310DFT diagnostic function test 311DFT discrete Fourier transform 312DGL data generation language 313DH Diffie-Hellman 314DHCP Dynamic Host Configuration Protocol 315DIFS distributed inter-frame space 316DIMM dual inline memory module 317DIRT design in real time 318DL diode logic 319DL discrete logarithm 320DL download 321DLE data link escape 322DLL dynamic link library 323DLP discrete logarithm problem 324DMA direct memory access 325DMI desktop management interface 326DMS document management system 327DMT discrete multitone modulation 328DNARD Digital network appliance reference design 329DND drag and drop 330DNS Domain Name System 331DNSSEC DNS Security Extensions 332DOE distributed object environment 333DOF data over fibre 334DOM document object model 335DOS denial of service 336DOS disk operating system 337DP DisplayPort 338DPC deferred procedure call 339DPCM differential pulse code modulation 340DPD dead peer detection 341DPI deep packet inspection 342DPI dots per inch 343DPL descriptor privilege level 344DPS Display PostScript 345DPST display power savings technology 346DRAM dynamic random access memory 347DRI direct rendering infrastructure 348DRM digital rights management 349DRRS display refresh rate switching 350DS debug store 351DSA digital signature algorithm 352DSB double-sideband modulation 353DSDT differentiated system descriptor table 354DSL digital subscriber line 355DSL domain specific language 356DSLAM digital subscriber line access multiplexer 357DSN delivery status notification 358DSO dynamic shared object 359DSP digital signal processor 360DSSS direct sequence spread spectrum 361DTD document type definition 362DTE data terminal equipment 363DTE dumb terminal emulator 364DTL diode-transistor logic 365DTLS datagram transport layer security 366DTS digital thermal sensor 367DUT device under test 368DVB digital video broadcasting 369DVCS distributed version control system 370DVD digital versatile disc 371DVFS dynamic voltage and frequency scaling 372DVI device independent 373DVI Digital Visual Interface 374DVR digital video recorder 375E-XER extended XML encoding rules 376EABI embedded-application binary interface 377EAI Email Address Internationalization 378EAI Enterprise Application Integration 379EAP Extensible Authentication Protocol 380EBCDIC Extended Binary Coded Decimal Interchange Code 381EBR extended boot record 382EC elliptical curve 383ECC error correction code 384ECDL elliptical curve discrete logarithm 385ECDSA elliptical curve digital signature algorithm 386ECL emitter-coupled logic 387ECN explicit congestion notification 388ECP enhanced capability port 389ECS enhanced chip set 390ECS extended configuration space 391EDAT enhanced dynamic acceleration technology 392EDGE explicit data graph execution 393EDID extended display identification data 394EDO extended data out 395EDS electronical data sheet 396EEPROM electrically erasable programmable read only memory 397EFI extensible firmware interface 398EFL emitter follower logic 399EFM eight to fourteen modulation 400EGA Enhanced Graphics Adapter 401EGP exterior gateway protocol 402EH extension header 403EIDE enhanced IDE 404EISA extended industry standard architecture 405ELF executable and linking format 406ELS entry level system 407EMI electro-magnetic interference 408EMP electro-magnetic pulse 409EMR electro-magnetic radiation 410EOF end of file 411EOI end of interrupt 412EOL end of line 413EOT end of transmission 414EPIC explicitly parallel instruction computing 415EPP enhanced parallel port 416EPRML extended partial response, maximum likelihood 417EPROM erasable programmable read only memory 418ERD emergency recovery disk 419ERD entity relationship diagram 420ERE extended regular expression 421ESDRAM enhanced synchronous dynamic random access memory 422ESS electronic switching system 423ESS extended service set 424ESSID extended service set identifier 425EST enhanced speedstep 426ETL extract, transform, load 427EU execution unit 428EULA end user license agreement 429FAT file allocation table 430FBRAM frame buffer random access memory 431FCL fiber channel loop 432FCS frame check sequence 433FDC floppy disk controller 434FDD floppy disk drive 435FDDI fiber distributed data interface 436FDE full disk encryption 437FEA finite element analysis 438FEC forward error correction 439FET field-effect transistor 440FF form feed 441FFH functional fixed hardware 442FFI foreign function interface 443FFM focus follows mouse 444FFS Fast File System 445FFS find first set 446FFT fast Fourier transform 447FG floating gate 448FHSS frequency hop spread spectrum 449FID frequency identifier 450FIFO first in, first out 451FILO first in, last out 452FIR fast infrared 453FLOPS floating [point] operations per second 454FLOSS free/libre/open source software 455FM frequency modulation 456FMR false match rate 457FOSS free/open source software 458FPGA field programmable gate array 459FPM fast page mode 460FPR floating point register 461FPU floating point unit 462FQDN fully qualified domain name 463FRR false rejection rate 464FRU field replaceable unit 465FS file system 466FSB front side bus 467FSCK file system check 468FSF Free Software Foundation 469FSK frequency shift keying 470FSM finite-state machine 471FTA fault tree analysis 472FTL flash translation layer 473FTP File Transfer Protocol 474FTPS File Transfer Protocol Secure 475FUS fast user switching 476FWH firmware hub 477FWS folding white space 478GAL generic array logic 479GAS generic address structure 480GC garbage collector 481GCR group-coded recording 482GDT global descriptor table 483GEM graphics environment manager 484GEM graphics execution manager 485GENA general event notification architecture 486GHC Glasgow Haskell compiler 487GID group identifier 488GIF graphics interchange format 489GMCH graphics and memory controller hub 490GNU GNU's Not Unix 491GOP graphics output protocol 492GOT global offset table 493GPE general purpose event 494GPF general protection fault 495GPG GNU Privacy Guard 496GPL [GNU] General Public License 497GPR general purpose register 498GPS generalized processor sharing 499GPT GUID partition table 500GPU graphics processing unit 501GR golden ratio 502GRE generic routing encapsulation 503GSI global system interrupt 504GUI graphical user interface 505GUID globally unique identifier 506HA high availability 507HAL hardware abstraction layer 508HAT hashed array tree 509HBA host bus adapter 510HCF halt and catch fire 511HCI host controller interface 512HCI human-computer interaction 513HCL hardware compatibility list 514HDCP High-bandwidth Digital Content Protection 515HDD hard disk drive 516HDL hardware description language 517HDMI High-Definition Multimedia Interface 518HDTV high-definition television 519HF high frequency 520HFM highest frequency mode 521HID human interface device 522HLL high-level language 523HMA high memory area 524HMI human-machine interface 525HOOD hierarchical object oriented design 526HP Hewlett-Packard 527HPC high performance computing 528HPET high precision event timer 529HSM hardware security module 530HSM hierarchical storage management 531HT hyper-threading 532HTC hardware thermal control 533HTCC high temperature co-fired ceramic 534HTML HyperText Markup Language 535HTT hyper-threading technology 536HTTP Hypertext Transfer Protocol 537HTTPS Hypertext Transfer Protocol Secure 538HVM hardware virtual machine 539HZ Hertz 540I2O intelligent input/output 541IA information assurance 542IANA Internet Assigned Numbers Authority 543IBC iterated block cipher 544IBM International Business Machines 545IBS instruction based sampling 546IBSS independent basic service set 547IC integrated circuit 548ICA independent computer architecture 549ICB Internet Citizen's Band 550ICE in-circuit emulator 551ICE internal compiler error 552ICH I/O controller hub 553ICMP Internet Control Message Protocol 554ICT information and communications technology 555ICW initialization command word 556IDA Intel dynamic acceleration 557IDCMP Intuition direct communication message port 558IDE integrated development environment 559IDE integrated drive electronics 560IDPS intrusion detection [and] prevention system 561IDRP inter-domain routing protocol 562IDS intrusion detection system 563IDT interrupt descriptor table 564IE Internet Explorer 565IEC International Electrotechnical Commission 566IEEE Institute of Electrical and Electronics Engineers 567IESG Internet Engineering Steering Group 568IETF Internet Engineering Task Force 569IF intermediate frequency 570IFCM isochronous flow control mode 571IFF Interchange File Format 572IGD Internet gateway device 573IGMP Internet Group Management Protocol 574IGP interior gateway protocol 575IHV independent hardware vendor 576IKE Internet key exchange 577ILM internal loopback mode 578ILOM integrated lights-out management 579ILP instruction level parallelism 580IM instant messaging 581IMAP Internet Message Access Protocol 582IMC integrated memory controller 583IMCR interrupt mode configuration register 584IMR interrupt mask register 585IMS information management system 586INCITS InterNational Committee for Information Technology Standards 587IO input/output 588IOCTL input/output control 589IOMMU input/output memory management unit 590IOT Internet of Things 591IP Internet Protocol 592IP intellectual property 593IPC interprocess communication 594IPE integrated programming environment 595IPI interprocessor interrupt 596IPNG Internet Protocol, Next Generation 597IPS in-plane switching 598IPS intrusion prevention system 599IPSEC Internet Protocol Security 600IRC Internet Relay Chat 601IRDA infrared data association 602IRQ interrupt request 603IRQL interrupt request level 604IRR interrupt request register 605IRTF Internet Research Task Force 606IS information system 607ISA industry standard architecture 608ISA instruction set architecture 609ISDN integrated services digital network 610ISI inter-symbol interference 611ISM industrial, scientific, [and] medical 612ISN initial serial number 613ISO International Standards Organization 614ISOC Internet Society 615ISP Internet service provider 616ISR in-service register 617ISR interrupt service routine 618IST interrupt stack table 619ISV independent software vendor 620IT information technology 621ITB Intel Turbo Boost 622ITIL information technology infrastructure library 623ITSM IT service management 624IV initialization vector 625IVT interrupt vector table 626JBOD just a bunch of disks 627JFET junction [gate] field-effect transistor 628JIT just in time 629JPEG Joint Photographic Experts Group 630JRE Java Runtime Environment 631JTAG joint test action group 632KB keyboard 633KB kilobyte 634KBD keyboard 635KBD kilobaud 636KLOC thousand lines of code 637KMS kernel-mode setting 638KPI kernel programming interface 639KVA kernel virtual address 640KVM kernel virtual machine 641KVM kernel virtual memory 642KVM keyboard, video, [and] mouse 643LAMP Linux Apache MySQL {Perl,PHP,Python} 644LAN local area network 645LAPIC local advanced programmable interrupt controller 646LAR load access rights 647LBA logical block addressing 648LBS location-based service 649LCD liquid crystal display 650LCP link control protocol 651LDA local delivery agent 652LDAP Lightweight Directory Access Protocol 653LDR light-dependent resistor 654LDT local descriptor table 655LE logical extent 656LED light emitting diode 657LER label edge router 658LF line feed 659LF low frequency 660LFM lowest frequency mode 661LFN long file names 662LFO low-frequency oscillation 663LFS log-structured file system 664LFU least frequently used 665LHP loop heat pipe 666LIFO last in, first out 667LILO LInux LOader 668LILO last in, last out 669LINT local interrupt 670LIR local Internet registry 671LKM {Linux,loadable} kernel module 672LKML Linux kernel mailing list 673LL load linked 674LL/SC load linked/store conditional 675LLC logical link control 676LLDP link layer discovery protocol 677LLF low level format 678LLMNR link-local multicast name resolution 679LLVM Low Level Virtual Machine 680LM long mode 681LMM link management mode 682LNO loop nest optimization 683LOC lines of code 684LOM lights-out management 685LPC low pin count 686LPS local positioning system 687LRC longitudinal redundancy check 688LRM left-to-right mark 689LRO left-to-right override 690LRU least recently used 691LSB Linux standards base 692LSB least significant {bit,byte} 693LSI large scale integration 694LSL load segment limit 695LSN Large Scale NAT 696LSN log sequence number 697LSR label switch router 698LTCC low temperature co-fired ceramic 699LTO link time optimization 700LTR left to right 701LTR load task register 702LTR letter(-sized paper) 703LTS long term support 704LUA Lua Uppercase Accident 705LUN logical unit number 706LV logical volume 707LVM logical volume management 708LVT local vector table 709LWP light-weight process 710LZW Lempel Ziv Welch 711MAC mandatory access control 712MAC medium access control 713MAC message authentication {check,code} 714MADT multiple APIC descriptor table 715MB megabyte 716MBA multi-boot agent 717MBR master boot record 718MBS megabits per second 719MC memory controller 720MCA machine check architecture 721MCA MicroChannel architecture 722MCC multiversion concurrency control 723MCE machine check exception 724MCGA Multi-Color Graphics Array 725MCH memory controller hub 726MCM multi-chip module 727MCQ memory controlled queue 728MD machine-dependent 729MDA mail delivery agent 730MDA Monochrome Display Adapter 731MDRAM multibank dynamic random access memory 732MESI modified, exclusive, shared, invalid 733MFC merge from current 734MFC Microsoft Foundation Classes 735MFM modified frequency modulation 736MI machine-independent 737MIB management information base 738MIC message integrity {check,code} 739MID mobile Internet device 740MIDI musical instrument digital interface 741MIF management information format 742MIM man in the middle 743MIMD multiple instruction, multiple data 744MIME Multipurpose Internet Mail Extensions 745MIMO multiple input multiple output 746MIPS million instructions per second 747MISD multiple instruction, single data 748MIT Massachusetts Institute of Technology 749MITM man in the middle 750ML machine language 751ML machine learning 752ML mailing list 753ML markup language 754ML maximum likelihood 755MLC multi-level cell 756MLD multicast listener discovery 757MLHP micro loop heat pipe 758MMIC monolithic microwave integrated circuit 759MMIO memory mapped input/output 760MMORPG massive multiplayer online role playing game 761MMU memory management unit 762MMX matrix math extension 763MMX multimedia extension 764MMX multiple math extension 765MO magneto-optical 766MOESI modified, owned, exclusive, shared, invalid 767MOF maximum operating frequency 768MOSFET metal-oxide-semiconductor field-effect transistor 769MOSI modified, owned, shared, invalid 770MP multi-platform 771MP multiplayer 772MP {multiprocessing,multiprocessor} 773MPEG moving picture experts group 774MPI message passing interface 775MPLS Multiprotocol Label Switching 776MPP massively parallel processor 777MPS memory pool system 778MPS multiprocessor specification 779MR modem ready 780MRU most recently used 781MS Microsoft 782MSB most significant {bit,byte} 783MSE mean square error 784MSF minutes seconds frames 785MSI message signaled interrupt 786MSI modified, shared, invalid 787MSR machine state register 788MSS maximum segment size 789MT machine translation 790MTA mail transfer agent 791MTBF mean time between failures 792MTP media transfer protocol 793MTRR memory type range register 794MTTF mean time to failure 795MTU maximum transmission unit 796MUA mail user agent 797MUD multi-user domain 798MVCC multiversion concurrency control 799MWE module width encoding 800MX mail exchange 801NACK negative acknowledgement 802NAN not a number 803NAPT Network Address Port Translation 804NAS network attached storage 805NAT network address translation 806NAV network allocation vector 807NC numerical control 808NCO numerically-controlled oscillator 809NCP Network Control Protocol 810NCQ native command queuing 811ND neighbor discovery 812NDFA nondeterministic finite automaton 813NE numeric error 814NFA nondeterministic finite automaton 815NFC near-field communication 816NFS network file system 817NIA next instruction address 818NIC network information center 819NIC network interface card 820NIDS network intrusion detection system 821NIP network interface protocol 822NIPS network intrusion prevention system 823NIS network information service 824NLS native language support 825NMI non-maskable interrupt 826NNTP Network News Transfer Protocol 827NOC network operations center 828NOP no operation 829NOS network operating system 830NP nondeterministic polynomial time 831NRZ non-return to zero 832NSA National Security Agency 833NTM non-deterministic Turing machine 834NTP Network Time Protocol 835NUMA non-uniform memory access 836NVRAM non-volatile random access memory 837NW not write-through 838NX no execute 839OAEP optimal asymmetric encryption padding 840OBO off by one 841OBOE off by one error 842OCL object constraint language 843OCR optical character recognition 844ODCM on-demand clock modulation 845ODT on-die termination 846OEM original equipment manufacturer 847OFDM orthogonal frequency division multiplexing 848OFET organic field-effect transistor 849OLAP online analytical processing 850OLE object linking and embedding 851OLTP online transaction processing 852ONFI open nand flash interface 853OO OpenOffice 854OO object oriented 855OOB out of band 856OOE out of order execution 857OOM out of memory 858OOO OpenOffice.org 859OOP object oriented programming 860OOPS object oriented programming systems 861OOSE object oriented software engineering 862OPM operations per minute 863OPS operations per second 864OQL Object Query Language 865ORB object request broker 866ORM object-relational mapping 867OS operating system 868OSD open source definition 869OSF open software foundation 870OSI Open Source Initiative 871OSI open systems interconnection 872OSPF open shortest path first 873OSPM OS power management 874OSS open sound system 875OSS open source software 876OSVW operating system visible workarounds 877OTP one time password 878OTP open telecom platform 879OU organizational unit 880OUI organizationally unique identifier 881OWL Web Ontology Language 882P2P PCI to PCI 883P2P peer to peer 884PA phase accumulator 885PA physical address 886PAC phase-amplitude converter 887PAE physical address extension 888PAL phase alternating line 889PAL programmable array logic 890PAM pluggable authentication modules 891PAM pulse amplitude modulation 892PAP password authentication protocol 893PAT page attribute table 894PAT port address translation 895PATA parallel ATA 896PAX portable archive exchange 897PBE pending break encoding 898PBE programming by example 899PC personal computer 900PC program counter 901PCB printed circuit board 902PCC Portable C Compiler 903PCD page-level cache disable 904PCE performance-monitor counter enable 905PCI peripheral component interconnect 906PCM phase change memory 907PCM pulse code modulation 908PCMCIA Personal Computer Memory Card International Association 909PCP Port Control Protocol 910PD public domain 911PDA personal digital assistant 912PDA pushdown automaton 913PDAG propositional directed acyclic graph 914PDB power distribution board 915PDF portable document format 916PDM pulse-duration modulation 917PDN pull-down network 918PDP page {descriptor,directory} page 919PDS product data sheet 920PDU protocol data unit 921PE protection enable 922PECI platform environment control interface 923PEP protocol extension protocol 924PER packed encoding rules 925PFS perfect forward secrecy 926PGAS partitioned global address space 927PGE page global enable 928PGP Pretty Good Privacy 929PHB PCI host bridge 930PHP PHP: Hypertext Preprocessor 931PIC position independent code 932PIC programmable interrupt controller 933PICNIC problem in chair, not in computer 934PID process id 935PIE position independent executable 936PIM personal information manager 937PIM platform-independent model 938PIO programmed input/output 939PIPT physically indexed, physically tagged 940PIQ prefetch input queue 941PIT programmable interrupt timer 942PIV personal identity verification 943PKCS public-key cryptography standards 944PKI public key infrastructure 945PLC programmable logic controller 946PLD programmable logic device 947PLL phase locked loop 948PLRU pseudo LRU 949PLTM package level thermal management 950PM power management 951PM {phase,pulse} modulation 952PME power management event 953PMI platform management interrupt 954PMIO port-mapped input/output 955PMT photo-multiplier tube 956PMU power management unit 957PNG portable network graphics 958PNP plug and play 959POE power over ethernet 960POF probability of failure 961POP Post Office Protocol 962POP power on password 963POSIX Portable Operating System Interface [for Unix] 964POST power on self test 965POTS plain old telephone system 966PP pair programming 967PPB PCI [to] PCI bridge 968PPC PowerPC 969PPI pixels per inch 970PPM pages per minute 971PPP Point-to-Point Protocol 972PPPOA Point-to-Point Protocol over ATM 973PPPOE Point-to-Point Protocol over Ethernet 974PPU physics processing unit 975PRBS pseudo-random bit sequence 976PRML partial response, maximum likelihood 977PRN pseudo random {noise,number} 978PRNG pseudo random number generator 979PROM programmable read only memory 980PSD power spectral density 981PSE page size extensions 982PSK phase shift keying 983PSK pre-shared key 984PSTN public switched telephone network 985PSW program status word 986PTE page table entry 987PTLA pseudo top level aggregator 988PTP page table page 989PTV perceived target value 990PU processing unit 991PUN physical unit number 992PV physical volume 993PVG physical volume group 994PVI protected-mode virtual interrupt 995PWM pulse width modulation 996PXE preboot execution environment 997QA quality assurance 998QAM quadrature amplitude modulation 999QAM quality assurance management 1000QBE query by example 1001QC quality control 1002QDI quasi delay insensitive 1003QOS quality of service 1004R/O read only 1005R/W read/write 1006RA receiver address 1007RA remote assistance 1008RA resource affinity 1009RA router advertisement 1010RAD rapid application development 1011RAID redundant array of {independent,inexpensive} disks 1012RAM random access memory 1013RAS reliability, availability and serviceability 1014RAS remote access service 1015RAS restartable atomic sequence 1016RAS row address strobe 1017RBF radial basis function 1018RBT red-black tree 1019RC release candidate 1020RC remote control 1021RCS Revision Control System 1022RCS revision control system 1023RCU read, copy, update 1024RDB Rigid Disk Block 1025RDBMS relational database management system 1026RDF Resource Description Framework 1027RDM relational data model 1028RDMA remote direct memory access 1029RE regular expression 1030REST representational state transfer 1031RF radio frequency 1032RFI radio frequency interference 1033RFO request for ownership 1034RGB red green blue 1035RGBA red green blue alpha 1036RH read hit 1037RHEL Red Hat Enterprise Linux 1038RHL Red Hat Linux 1039RIB routing information base 1040RIFF Resource Interchange File Format 1041RIP Routing Information Protocol 1042RIR regional Internet registry 1043RISC reduced instruction set {computer,computing} 1044RKM ROM Kernel Manual 1045RLE run length encoding 1046RLL run length limited 1047RLO right-to-left override 1048RM read miss 1049RMI remote method invocation 1050RMPM rapid memory power management 1051RMS root mean square 1052RMW read, modify, write 1053RNG random number generator 1054ROM read only memory 1055RPC remote procedure call 1056RPKI resource PKI 1057RPL requested privilege level 1058RPM revolutions per minute 1059RPN reverse Polish notation 1060RR random replacement 1061RR round robin 1062RS relay station 1063RSA Rivest, Shamir, [and] Adleman 1064RSIP Realm Specific IP 1065RSS really simple syndication 1066RSS residual sum of squares 1067RT real time 1068RTC real time clock 1069RTC real time computing 1070RTF rich text format 1071RTL register transfer language 1072RTL resistor-transistor logic 1073RTL right to left 1074RTOS real time operating system 1075RTS request to send 1076RTT round trip time 1077RUP rational unified process 1078RWM read-write memory 1079RX {receive,receiver} 1080S/PDIF Sony/Philips Digital Interface Format 1081SA security advisory 1082SA security association 1083SA source address 1084SA structured analysis 1085SAAS software as a service 1086SACD super audio compact disc 1087SAD security association database 1088SAL system abstraction layer 1089SAM serial access memory 1090SAM sum addressed memory 1091SAN storage area network 1092SAPIC streamlined advanced programmable interrupt controller 1093SASD structured analysis, structured design 1094SASI Shugart Associates System Interface 1095SASL simple authentication [and] security layer 1096SATA serial advanced technology attachment 1097SB sound blaster 1098SBU standard build unit 1099SC store conditional 1100SCA source code analyzer 1101SCADA supervisory control and data acquisition 1102SCC single chip cloud 1103SCC source code control 1104SCCS Source Code Control System 1105SCI scalable coherent interface 1106SCI system control interrupt 1107SCM software configuration management 1108SCM source code management 1109SCM storage-class memory 1110SCP secure copy 1111SCSI Small Computer System Interface 1112SCTP Stream Control Transmission Protocol 1113SDI symbol deinterleave 1114SDK software development kit 1115SDL Simple Declarative Language 1116SDL Simple Direct-media Layer 1117SDRAM synchronous dynamic random access memory 1118SDT syntax-directed translation 1119SEGV segmentation violation 1120SEO search engine optimization 1121SFC sequential function chart 1122SFI simple firmware interface 1123SFI software fault isolation 1124SFTP SSH File Transfer Protocol 1125SFTP Serial File Transfer Protocol 1126SFTP Simple File Transfer Protocol 1127SGRAM synchronous graphics random access memory 1128SIEM security information and event management 1129SIFS short inter-frame space 1130SIMD single instruction, multiple data 1131SIMM single inline memory module 1132SIP Session Initiation Protocol 1133SIR signal-to-interference ratio 1134SIR slow infrared 1135SISD single instruction, single data 1136SLC single-level cell 1137SLDRAM synchronous-link dynamic random access memory 1138SLED single large expensive disk 1139SLI scalable link interface 1140SLI scan-line interleave 1141SLOC source lines of code 1142SLRU segmented LRU 1143SMA smart memory access 1144SMAF system management action field 1145SMAP Simple Mail Access Protocol 1146SMAP supervisor mode access prevention 1147SMART self-monitoring analysis and reporting technology 1148SMBIOS System Management BIOS 1149SMC system management controller 1150SMI structure of management information 1151SMI system management interrupt 1152SMM system management mode 1153SMP symmetric multiprocessing 1154SMT simultaneous multithreading 1155SMTP Simple Mail Transfer Protocol 1156SMU system management unit 1157SNMP Simple Network Management Protocol 1158SNR signal-to-noise ratio 1159SOA service oriented architecture 1160SOAP Simple Object Access Protocol 1161SOC system on chip 1162SOF start of frame 1163SOH start of header 1164SOHO small office/home office 1165SOL serial over LAN 1166SP service pack 1167SP stack pointer 1168SPARC scalable processor architecture 1169SPARQL SPARQL Protocol and RDF Query Language 1170SPD security policy database 1171SPD serial presence detect 1172SPDIF Sony/Philips digital interface format 1173SPI serial peripheral interface 1174SPI stateful packet inspection 1175SPMD single process, multiple data 1176SPR special purpose register 1177SPT sectors per track 1178SQA software quality assurance 1179SQL Structured Query Language 1180SRAM static random access memory 1181SRC sample rate conversion 1182SS self-snoop 1183SS stack segment 1184SSB single-sideband modulation 1185SSD solid state drive 1186SSE streaming SIMD extensions 1187SSFDC solid state floppy disc card 1188SSH secure shell 1189SSI server side includes 1190SSID service set identifier 1191SSL secure sockets layer 1192SSP stack smashing protection 1193STC software thermal control 1194STD state transition diagram 1195STP Spanning Tree Protocol 1196STP shielded twisted pair 1197SUS Single Unix Specification 1198SUT system under test 1199SVG scalable vector graphics 1200SVGA Super Video Graphics Array 1201SVM secure virtual machine 1202SVM support vector machine 1203SVR System V Release 1204SWF Shockwave Flash 1205SWIG simplified wrapper [and] interface generator 1206SYR symbol timing recovery 1207TA test assertion 1208TA transmitter address 1209TAI international atomic time 1210TAO track at once 1211TAOCP The Art of Computer Programming 1212TAP Test Anything Protocol 1213TAS test and set 1214TB terabyte 1215TCB trace capture buffer 1216TCB trusted computing base 1217TCC thermal control circuit 1218TCL tool command language 1219TCP Transmission Control Protocol 1220TCQ tagged command queueing 1221TDC time [to] digital converter 1222TDD test driven development 1223TDD time division duplex 1224TDM time division multiplexing 1225TDMA time division multiple access 1226TDOA time difference of arrival 1227TDP thermal design {point,power} 1228TECO Text Editor and Corrector 1229TFT thin film transistor 1230TFTP Trivial File Transfer Protocol 1231TIAS try it and see 1232TIFF tagged image file format 1233TITS try it to see 1234TK temporal key 1235TKIP Temporal Key Integrity Protocol 1236TLA top level aggregator 1237TLB translation lookaside buffer 1238TLD top level domain 1239TLS thread local storage 1240TLS transport layer security 1241TM Turing machine 1242TM thermal monitor 1243TMDS transition minimized differential signaling 1244TMO timeout 1245TOD time of day 1246TOS terms of service 1247TOS trusted operating system 1248TOS type of service 1249TP transaction processing 1250TPI tracks per inch 1251TPM transactions per minute 1252TPM trusted platform module 1253TPR task priority register 1254TPS transactions per second 1255TPS transmission parameters signaling 1256TR task register 1257TR token ring 1258TRL timing recovery loop 1259TRNG true random number generator 1260TS terminal services 1261TS time series 1262TS time stamp 1263TS transport stream 1264TSC time stamp counter 1265TSD time stamp disable 1266TSL test, set, lock 1267TSO time sharing option 1268TSP Time-Stamp Protocol 1269TSP Tunnel Setup Protocol 1270TSP time synchronization protocol 1271TSP traveling salesman problem 1272TSS task state segment 1273TTL time to live 1274TTL transistor-transistor logic 1275TTM translation table maps 1276TTY teletype 1277TUI {terminal,text-based,textual} user interface 1278TX {transmit out,transmitter} 1279TZ time zone 1280UAC user {access,account} control 1281UAF use-after-free 1282UART universal asynchronous receiver/transmitter 1283UAT user acceptance testing 1284UC uncacheable 1285UCS uniform-cost search 1286UDMA ultra DMA 1287UDO ultra density optical 1288UDP User Datagram Protocol 1289UEFI unified extensible firmware interface 1290UFS Unix File System 1291UGA universal graphics adapter 1292UI unit interval 1293UI user interface 1294UID unique identifier 1295UID user identifier 1296UL upload 1297UMA uniform memory access 1298UMA upper memory area 1299UMB upper memory block 1300UML unified modeling language 1301UMPC ultra-mobile PC 1302UPNP universal plug and play 1303UPS uninterruptible power supply 1304URI uniform resource identifier 1305URL uniform resource locator 1306URN uniform resource name 1307USART universal synchronous/asynchronous receiver/transmitter 1308USB universal serial bus 1309USWC uncacheable speculative write combining 1310UT unit test 1311UTC coordinated universal time 1312UTP unshielded twisted pair 1313UUCP Unix-to-Unix Copy Protocol 1314UUID universally unique identifier 1315UUOC useless use of cat 1316UUT unit under test 1317UX user experience 1318VA vertical alignment 1319VA virtual address 1320VA volt-ampere 1321VAX virtual address extension 1322VB Visual Basic 1323VCA variable-gain amplifier 1324VCC common collector voltage 1325VCF voltage-controlled filter 1326VCM virtual channel memory 1327VCO voltage-controlled oscillator 1328VCS version control system 1329VESA Video Electronics Standards Association 1330VFO variable-frequency oscillator 1331VG volume group 1332VGA Video Graphics Array 1333VHDCI very high density cable interconnect 1334VID voltage level identifier 1335VIPT virtually indexed, physically tagged 1336VIVT virtually indexed, virtually tagged 1337VLAN virtual local area network 1338VLIW very long instruction word 1339VLSI very large scale integration 1340VLSM variable length subnet mask 1341VM virtual {machine,memory} 1342VME virtual mode extension 1343VMX vector multimedia extensions 1344VMX virtual machine extensions 1345VOD video on demand 1346VPN virtual private network 1347VR virtual reality 1348VRAM video random access memory 1349VRM voltage regulator module 1350VRRP Virtual Router Redundancy Protocol 1351W watt 1352W3C World Wide Web Consortium 1353WAN wide area network 1354WAP Wireless Application Protocol 1355WAP wireless access point 1356WDT watchdog timer 1357WEP Wired Equivalent Privacy 1358WFI wait for interrupt 1359WFQ weighted fair queuing 1360WH write hit 1361WIFI wireless fidelity 1362WLAN wireless local area network 1363WM write miss 1364WMI Windows Management Instrumentation 1365WOL Wake-on-LAN 1366WOM Wake-on-Modem 1367WOR Wake-on-Ring 1368WORM write once read many 1369WP WordPerfect 1370WP word processor 1371WP write protect 1372WPA Wi-Fi Protected Access 1373WPA2 Wi-Fi Protected Access II 1374WPS Wi-Fi Protected Setup 1375WRAM window random access memory 1376WS web services 1377WTC write through caching 1378WWAN wireless wide area network 1379WWW world wide web 1380WYSIWYG what you see is what you get 1381XBAR crossbar 1382XDMCP X Display Manager control protocol 1383XER XML encoding rules 1384XGA Extended Graphics Array 1385XIP execute in place 1386XML Extensible Markup Language 1387XOR exclusive or 1388XP extreme programming 1389XSI X/Open System Interface 1390XSL extensible stylesheet language 1391XSS cross site scripting 1392XT extended technology 1393XUL XML user interface language 1394YACC yet another compiler compiler 1395YAWPFAPR you are welcome; please file a problem report 1396YP Yellow Pages 1397YTD year to date 1398ZBR zone bit recording 1399ZFOD zero-filled on demand 1400ZIF zero insertion force 1401ZIFS zero insertion force socket 1402ZMA zone multicast address 1403