acronyms.comp revision 1.153
1$NetBSD: acronyms.comp,v 1.153 2015/10/27 15:29:45 jakllsch 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 112BIND Berkeley Internet Name Daemon 113BIOS Basic Input/Output System 114BIOS built-in operating system 115BIST built-in self-test 116BIU bus interface unit 117BKDG BIOS and kernel developer's guide 118BLAS basic linear algebra subprograms 119BLC back light control 120BLOB binary large object 121BM bus master 122BMC baseboard management controller 123BMIC bus master interface controller 124BN boundary neutral 125BNF Backus-Naur form 126BO binary output 127BOF beginning of file 128BOM beginning of message 129BOM byte order mark 130BP base pointer 131BP boot processor 132BPB BIOS parameter block 133BPF Berkeley Packet Filter 134BPI bits per inch 135BPM business process modelling 136BPS bits per second 137BPSK binary phase shift keying 138BQS Berkeley quality software 139BRE basic regular expression 140BS backspace 141BS binary sequence 142BSA basic service area 143BSD Berkeley Software Distribution 144BSF bit scan forward 145BSOD blue screen of death 146BSP binary space partition 147BSP bootstrap processor 148BSR bit scan reverse 149BSS basic service set 150BSS block started by symbol 151BSSID basic service set identifier 152BT BitTorrent 153BT Bluetooth 154BT bit test 155BTC bit test [and] complement 156BTR bit test [and] reset 157BTS bit test [and] set 158BTS bits per second 159BW bandwidth 160BWM block-write mode 161CA certificate authority 162CAD computer-aided design 163CAM computer assisted manufacturing 164CAM conditional access module 165CAM content addressable memory 166CARP Common Address Redundancy Protocol 167CAS column address strobe 168CAS compare and swap 169CAS computer algebra system 170CASE computer aided software engineering 171CAU control access unit 172CAV constant angular velocity 173CBC cipher block chaining 174CBR constant bit rate 175CC carbon coby 176CCD charge coupled device 177CCI co-channel interferer 178CD cache disable 179CD compact disc 180CDDA compact disc digital audio 181CDMA code division multiple access 182CDRAM cache dynamic random access memory 183CER canonical encoding rules 184CF compact flash 185CFG context-free grammar 186CFG control-flow graph 187CG control gate 188CGA Color Graphics Adapter 189CGI common gateway interface 190CGN Carrier-Grade NAT 191CHAP Challenge-Handshake Authentication Protocol 192CHS cylinder/head/sector 193CI continuous integration 194CI {common,component} interface 195CIDR Classless Inter-Domain Routing 196CIFS Common Internet File System 197CIL common intermediate language 198CIR carrier-to-interference ratio 199CIS contact image sensor 200CISC complex instruction set {computer,computing} 201CJK Chinese, Japanese, [and] Korean 202CLF common log format 203CLI command line interface 204CLR common language runtime 205CLTT closed loop thermal throttling 206CLUT color look-up table 207CLV constant linear velocity 208CM configuration management 209CMA concert multithread architecture 210CMI control management interface 211CMI control method interface 212CMOS complementary metal-oxide-semiconductor 213CMP chip multi-processing 214CMS content management system 215CMYK cyan magenta yellow black 216CN {common,canonical} name 217CNC computer numerical control 218CNR carrier-to-noise ratio 219COF current operating frequency 220COFDM coded orthogonal frequency division multiplexing 221COFF common object file format 222COM component object model 223COMA cache-only memory architecture 224CORBA common object request broker architecture 225COW copy-on-write 226CP continuous pilot 227CPB core performance boost 228CPE common phase error 229CPG clock pulse generator 230CPL current privilege level 231CPLD complex programmable logic device 232CPP C preprocessor 233CPS characters per second 234CPT command pass through 235CPU central processing unit 236CR carriage return 237CRC cyclic redundancy check 238CRL carrier recovery loop 239CRLF carriage return line feed 240CRT cathode ray tube 241CS cable select 242CS chip select 243CS code segment 244CS computer science 245CSI channel state information 246CSI common system interface 247CSMA carrier sense multiple access 248CSMA/CA carrier sense multiple access with collision avoidance 249CSMA/CD carrier sense multiple access with collision detection 250CSR control [and] status registers 251CSRG Computer Systems Research Group 252CSS cascading style sheets 253CSV comma-separated values 254CTM close to metal 255CTS clear to send 256CUA common user access 257CUT coordinated universal time 258CV control voltage 259CVS Concurrent Versions System 260DA destination address 261DAA distributed application architecture 262DAB digital audio broadcasting 263DAC digital [to] analog converter 264DAC discretionary access control 265DAD duplicate address detection 266DAO disk at once 267DAP Directory Access Protocol 268DAT digital audio tape 269DAT dynamic acceleration technology 270DB database 271DBA database administrator 272DBA dynamic bandwidth allocation 273DBB data bus buffer 274DBC design by contract 275DBL dynamic buffer limiting 276DBMS database management system 277DBS database server 278DC direct current 279DCC Direct Client-to-Client 280DCC direct cable connect 281DCD data carrier detect 282DCE data control equipment 283DCE distributed computing environment 284DCOM distributed component object model 285DCOP Desktop COmmunication Protocol 286DCS data collection systems 287DCT discrete cosine transform 288DCU data cache unit 289DDC display data channel 290DDE dynamic data exchange 291DDK device driver kit 292DDL data description language 293DDR double data rate 294DDS direct digital sound 295DDWG Digital Display Working Group 296DE debugging extensions 297DE desktop environment 298DEA data encryption algorithm 299DEK data encryption key 300DEP data execution prevention 301DER distinguished encoding rules 302DES Data Encryption Standard 303DF don't fragment 304DFA deterministic finite automaton 305DFC data flow control 306DFS depth first search 307DFS distributed file system 308DFT diagnostic function test 309DFT discrete Fourier transform 310DGL data generation language 311DH Diffie-Hellman 312DHCP Dynamic Host Configuration Protocol 313DIFS distributed inter-frame space 314DIMM dual inline memory module 315DIRT design in real time 316DL diode logic 317DL discrete logarithm 318DL download 319DLE data link escape 320DLL dynamic link library 321DLP discrete logarithm problem 322DMA direct memory access 323DMI desktop management interface 324DMS document management system 325DMT discrete multitone modulation 326DNARD Digital network appliance reference design 327DND drag and drop 328DNS Domain Name System 329DOE distributed object environment 330DOF data over fibre 331DOM document object model 332DOS denial of service 333DOS disk operating system 334DP DisplayPort 335DPC deferred procedure call 336DPCM differential pulse code modulation 337DPD dead peer detection 338DPI deep packet inspection 339DPI dots per inch 340DPL descriptor privilege level 341DPS Display PostScript 342DPST display power savings technology 343DRAM dynamic random access memory 344DRI direct rendering infrastructure 345DRM digital rights management 346DRRS display refresh rate switching 347DS debug store 348DSA digital signature algorithm 349DSB double-sideband modulation 350DSDT differentiated system descriptor table 351DSL digital subscriber line 352DSL domain specific language 353DSLAM digital subscriber line access multiplexer 354DSN delivery status notification 355DSO dynamic shared object 356DSP digital signal processor 357DSSS direct sequence spread spectrum 358DTD document type definition 359DTE data terminal equipment 360DTE dumb terminal emulator 361DTL diode-transistor logic 362DTS digital thermal sensor 363DUT device under test 364DVB digital video broadcasting 365DVCS distributed version control system 366DVD digital versatile disc 367DVFS dynamic voltage and frequency scaling 368DVI device independent 369DVI Digital Visual Interface 370DVR digital video recorder 371E-XER extended XML encoding rules 372EABI embedded-application binary interface 373EAP Extensible Authentication Protocol 374EBCDIC Extended Binary Coded Decimal Interchange Code 375EBR extended boot record 376EC elliptical curve 377ECC error correction code 378ECDL elliptical curve discrete logarithm 379ECDSA elliptical curve digital signature algorithm 380ECL emitter-coupled logic 381ECN explicit congestion notification 382ECP enhanced capability port 383ECS enhanced chip set 384ECS extended configuration space 385EDAT enhanced dynamic acceleration technology 386EDGE explicit data graph execution 387EDID extended display identification data 388EDO extended data out 389EDS electronical data sheet 390EEPROM electrically erasable programmable read only memory 391EFI extensible firmware interface 392EFL emitter follower logic 393EFM eight to fourteen modulation 394EGA Enhanced Graphics Adapter 395EGP exterior gateway protocol 396EH extension header 397EIDE enchanced IDE 398EISA extended industry standard architecture 399ELF executable and linking format 400ELS entry level system 401EMI electro-magnetic interference 402EMP electro-magnetic pulse 403EMR electro-magnetic radiation 404EOF end of file 405EOI end of interrupt 406EOL end of line 407EOT end of transmission 408EPIC explicitly parallel instruction computing 409EPP enhanced parallel port 410EPRML extended partial response, maximum likelihood 411EPROM erasable programmable read only memory 412ERD emergency recovery disk 413ERD entity relationship diagram 414ERE extended regular expression 415ESDRAM enhanced synchronous dynamic random access memory 416ESS electronic switching system 417ESS extended service set 418ESSID extended service set identifier 419EST enhanced speedstep 420ETL extract, transform, load 421EU execution unit 422EULA end user license agreement 423FAT file allocation table 424FBRAM frame buffer random access memory 425FCL fiber channel loop 426FCS frame check sequence 427FDC floppy disk controller 428FDD floppy disk drive 429FDDI fiber distributed data interface 430FDE full disk encryption 431FEA finite element analysis 432FEC forward error correction 433FET field-effect transistor 434FF form feed 435FFH functional fixed hardware 436FFI foreign function interface 437FFM focus follows mouse 438FFS Fast File System 439FFS find first set 440FFT fast Fourier transform 441FG floating gate 442FHSS frequency hop spread spectrum 443FID frequency identifier 444FIFO first in, first out 445FILO first in, last out 446FIR fast infrared 447FLOPS floating [point] operations per second 448FLOSS free/libre/open source software 449FM frequency modulation 450FMR false match rate 451FOSS free/open source software 452FPGA field programmable gate array 453FPM fast page mode 454FPR floating point register 455FPU floating point unit 456FQDN fully qualified domain name 457FRR false rejection rate 458FRU field replaceable unit 459FS file system 460FSB front side bus 461FSCK file system check 462FSF Free Software Foundation 463FSK frequency shift keying 464FSM finite-state machine 465FTA fault tree analysis 466FTL flash translation layer 467FTP File Transfer Protocol 468FTPS File Transfer Protocol Secure 469FUS fast user switching 470FWH firmware hub 471FWS folding white space 472GAL generic array logic 473GAS generic address structure 474GC garbage collector 475GCR group-coded recording 476GDT global descriptor table 477GEM graphics environment manager 478GEM graphics execution manager 479GENA general event notification architecture 480GHC Glasgow Haskell compiler 481GID group identifier 482GIF graphics interchange format 483GMCH graphics and memory controller hub 484GNU GNU's Not Unix 485GOT global offset table 486GPE general purpose event 487GPF general protection fault 488GPG GNU Privacy Guard 489GPL [GNU] General Public License 490GPR general purpose register 491GPS generalized processor sharing 492GPT GUID partition table 493GPU graphics processing unit 494GR golden ratio 495GRE generic routing encapsulation 496GSI global system interrupt 497GUI graphical user interface 498GUID globally unique identifier 499HA high availability 500HAL hardware abstraction layer 501HAT hashed array tree 502HBA host bus adapter 503HCF halt and catch fire 504HCI host controller interface 505HCI human-computer interaction 506HCL hardware compatibility list 507HDCP High-bandwidth Digital Content Protection 508HDD hard disk drive 509HDL hardware description language 510HDMI High-Definition Multimedia Interface 511HDTV high-definition television 512HF high frequency 513HFM highest frequency mode 514HID human interface device 515HLL high-level language 516HMA high memory area 517HMI human-machine interface 518HOOD hierarchical object oriented design 519HP Hewlett-Packard 520HPC high performance computing 521HPET high precision event timer 522HT hyper-threading 523HTC hardware thermal control 524HTCC high temperature co-fired ceramic 525HTML HyperText Markup Language 526HTT hyper-threading technology 527HTTP Hypertext Transfer Protocol 528HTTPS Hypertext Transfer Protocol Secure 529HVM hardware virtual machine 530HZ Hertz 531I2O intelligent input/output 532IA information assurance 533IANA Internet Assigned Numbers Authority 534IBC iterated block cipher 535IBM International Business Machines 536IBS instruction based sampling 537IBSS independent basic service set 538IC integrated circuit 539ICA independent computer architecture 540ICB Internet Citizen's Band 541ICE in-circuit emulator 542ICE internal compiler error 543ICH I/O controller hub 544ICMP Internet Control Message Protocol 545ICT information and communications technology 546ICW initialization command word 547IDA Intel dynamic acceleration 548IDCMP Intuition direct communication message port 549IDE integrated development environment 550IDE integrated drive electronics 551IDPS intrusion detection [and] prevention system 552IDRP inter-domain routing protocol 553IDS intrusion detection system 554IDT interrupt descriptor table 555IE Internet Explorer 556IEC International Electrotechnical Commission 557IEEE Institute of Electrical and Electronics Engineers 558IESG Internet Engineering Steering Group 559IETF Internet Engineering Task Force 560IF intermediate frequency 561IFCM isochronous flow control mode 562IFF Interchange File Format 563IGD Internet gateway device 564IGMP Internet Group Management Protocol 565IGP interior gateway protocol 566IHV independent hardware vendor 567IKE Internet key exchange 568ILM internal loopback mode 569ILOM integrated lights-out management 570ILP instruction level parallelism 571IM instant messaging 572IMAP Internet Message Access Protocol 573IMC integrated memory controller 574IMCR interrupt mode configuration register 575IMR interrupt mask register 576IMS information management system 577INCITS InterNational Committee for Information Technology Standards 578IO input/output 579IOCTL input/output control 580IOMMU input/output memory management unit 581IOT Internet of Things 582IP Internet Protocol 583IP intellectual property 584IPC interprocess communication 585IPE integrated programming environment 586IPI interprocessor interrupt 587IPNG Internet Protocol, Next Generation 588IPS in-plane switching 589IPS intrusion prevention system 590IPSEC Internet Protocol Security 591IRC Internet Relay Chat 592IRDA infrared data association 593IRQ interrupt request 594IRQL interrupt request level 595IRR interrupt request register 596IRTF Internet Research Task Force 597IS information system 598ISA industry standard architecture 599ISA instruction set architecture 600ISDN integrated services digital network 601ISI inter-symbol interference 602ISM industrial, scientific, [and] medical 603ISN initial serial number 604ISO International Standards Organization 605ISOC Internet Society 606ISP Internet service provider 607ISR in-service register 608ISR interrupt service routine 609IST interrupt stack table 610ISV independent software vendor 611IT information technology 612ITB Intel Turbo Boost 613IV initialization vector 614IVT interrupt vector table 615JBOD just a bunch of disks 616JFET junction [gate] field-effect transistor 617JIT just in time 618JPEG Joint Photographic Experts Group 619JRE Java Runtime Environment 620JTAG joint test action group 621KB keyboard 622KB kilobyte 623KBD keyboard 624KBD kilobaud 625KLOC thousand lines of code 626KMS kernel-mode setting 627KPI kernel programming interface 628KVA kernel virtual address 629KVM kernel virtual machine 630KVM kernel virtual memory 631KVM keyboard, video, [and] mouse 632LAMP Linux Apache MySQL {Perl,PHP,Python} 633LAN local area network 634LAPIC local advanced programmable interrupt controller 635LAR load access rights 636LBA logical block addressing 637LBS location-based service 638LCD liquid crystal display 639LCP link control protocol 640LDA local delivery agent 641LDAP Lightweight Directory Access Protocol 642LDR light-dependent resistor 643LDT local descriptor table 644LE logical extent 645LED light emitting diode 646LER label edge router 647LF line feed 648LF low frequency 649LFM lowest frequency mode 650LFN long file names 651LFO low-frequency oscillation 652LFS log-structured file system 653LFU least frequently used 654LHP loop heat pipe 655LIFO last in, first out 656LILO LInux LOader 657LILO last in, last out 658LINT local interrupt 659LIR local Internet registry 660LKM {Linux,loadable} kernel module 661LKML Linux kernel mailing list 662LL load linked 663LL/SC load linked/store conditional 664LLC logical link control 665LLDP link layer discovery protocol 666LLF low level format 667LLMNR link-local multicast name resolution 668LLVM Low Level Virtual Machine 669LM long mode 670LMM link management mode 671LNO loop nest optimization 672LOC lines of code 673LOM lights-out management 674LPC low pin count 675LPS local positioning system 676LRC longitudinal redundancy check 677LRM left-to-right mark 678LRO left-to-right override 679LRU least recently used 680LSB Linux standards base 681LSB least significant {bit,byte} 682LSI large scale integration 683LSL load segment limit 684LSN Large Scale NAT 685LSN log sequence number 686LSR label switch router 687LTCC low temperature co-fired ceramic 688LTO link time optimization 689LTR left to right 690LTR load task register 691LTR letter(-sized paper) 692LUA Lua Uppercase Accident 693LUN logical unit number 694LV logical volume 695LVM logical volume management 696LVT local vector table 697LWP light-weight process 698LZW Lempel Ziv Welch 699MAC mandatory access control 700MAC medium access control 701MAC message authentication {check,code} 702MADT multiple APIC descriptor table 703MB megabyte 704MBR master boot record 705MBS megabits per second 706MC memory controller 707MCA machine check architecture 708MCA MicroChannel architecture 709MCC multiversion concurrency control 710MCE machine check exception 711MCGA Multi-Color Graphics Array 712MCH memory controller hub 713MCM multi-chip module 714MCQ memory controlled queue 715MD machine-dependent 716MDA mail delivery agent 717MDA Monochrome Display Adapter 718MDRAM multibank dynamic random access memory 719MESI modified, exclusive, shared, invalid 720MFC merge from current 721MFC Microsoft Foundation Classes 722MFM modified frequency modulation 723MI machine-independent 724MIB management information base 725MIC message integrity {check,code} 726MID mobile Internet device 727MIDI musical instrument digital interface 728MIF management information format 729MIM man in the middle 730MIMD multiple instruction, multiple data 731MIME Multipurpose Internet Mail Extensions 732MIMO multiple input multiple output 733MIPS million instructions per second 734MISD multiple instruction, single data 735MIT Massachusetts Institute of Technology 736MITM man in the middle 737ML machine language 738ML machine learning 739ML mailing list 740ML markup language 741ML maximum likelihood 742MLC multi-level cell 743MLHP micro loop heat pipe 744MMIC monolithic microwave integrated circuit 745MMIO memory mapped input/output 746MMORPG massive multiplayer online role playing game 747MMU memory management unit 748MMX matrix math extension 749MMX multimedia extension 750MMX multiple math extension 751MO magneto-optical 752MOESI modified, owned, exclusive, shared, invalid 753MOF maximum operating frequency 754MOSFET metal-oxide-semiconductor field-effect transistor 755MOSI modified, owned, shared, invalid 756MP multi-platform 757MP multiplayer 758MP {multiprocessing,multiprocessor} 759MPEG moving picture experts group 760MPI message passing interface 761MPLS Multiprotocol Label Switching 762MPP massively parallel processor 763MPS memory pool system 764MPS multiprocessor specification 765MR modem ready 766MRU most recently used 767MS Microsoft 768MSB most significant {bit,byte} 769MSE mean square error 770MSF minutes seconds frames 771MSI message signaled interrupt 772MSI modified, shared, invalid 773MSR machine state register 774MSS maximum segment size 775MT machine translation 776MTA mail transfer agent 777MTBF mean time between failures 778MTP media transfer protocol 779MTRR memory type range register 780MTTF mean time to failure 781MTU maximum transmission unit 782MUA mail user agent 783MUD multi-user domain 784MVCC multiversion concurrency control 785MWE module width encoding 786MX mail exchange 787NACK negative acknowledgement 788NAN not a number 789NAPT Network Address Port Translation 790NAS network attached storage 791NAT network address translation 792NAV network allocation vector 793NC numerical control 794NCO numerically-controlled oscillator 795NCP Network Control Protocol 796NCQ native command queuing 797ND neighbor discovery 798NDFA nondeterministic finite automaton 799NE numeric error 800NFA nondeterministic finite automaton 801NFS network file system 802NIA next instruction address 803NIC network information center 804NIC network interface card 805NIDS network intrusion detection system 806NIP network interface protocol 807NIPS network intrusion prevention system 808NIS network information service 809NLS native language support 810NMI non-maskable interrupt 811NNTP Network News Transfer Protocol 812NOC network operations center 813NOP no operation 814NOS network operating system 815NP nondeterministic polynomial time 816NRZ non-return to zero 817NSA National Security Agency 818NTM non-deterministic Turing machine 819NTP Network Time Protocol 820NUMA non-uniform memory access 821NVRAM non-volatile random access memory 822NW not write-through 823NX no execute 824OAEP optimal asymmetric encryption padding 825OBO off by one 826OBOE off by one error 827OCL object constraint language 828OCR optical character recognition 829ODCM on-demand clock modulation 830ODT on-die termination 831OEM original equipment manufacturer 832OFDM orthogonal frequency division multiplexing 833OFET organic field-effect transistor 834OLAP online analytical processing 835OLE object linking and embedding 836OLTP online transaction processing 837ONFI open nand flash interface 838OO OpenOffice 839OO object oriented 840OOB out of band 841OOE out of order execution 842OOM out of memory 843OOO OpenOffice.org 844OOP object oriented programming 845OOPS object oriented programming systems 846OOSE object oriented software engineering 847OPM operations per minute 848OPS operations per second 849OQL Object Query Language 850ORB object request broker 851ORM object-relational mapping 852OS operating system 853OSD open source definition 854OSF open software foundation 855OSI Open Source Initiative 856OSI open systems interconnection 857OSPF open shortest path first 858OSPM OS power management 859OSS open sound system 860OSS open source software 861OSVW operating system visible workarounds 862OTP one time password 863OTP open telecom platform 864OU organizational unit 865OUI organizationally unique identifier 866OWL Web Ontology Language 867P2P PCI to PCI 868P2P peer to peer 869PA phase accumulator 870PA physical address 871PAC phase-amplitude converter 872PAE physical address extension 873PAL phase alternating line 874PAL programmable array logic 875PAM pluggable authentication modules 876PAM pulse amplitude modulation 877PAP password authentication protocol 878PAT page attribute table 879PAT port address translation 880PATA parallel ATA 881PAX portable archive exchange 882PBE pending break encoding 883PBE programming by example 884PC personal computer 885PC program counter 886PCB printed circuit board 887PCC Portable C Compiler 888PCD page-level cache disable 889PCE performance-monitor counter enable 890PCI peripheral component interconnect 891PCM phase change memory 892PCM pulse code modulation 893PCMCIA Personal Computer Memory Card International Association 894PCP Port Control Protocol 895PD public domain 896PDA personal digital assistant 897PDA pushdown automaton 898PDAG propositional directed acyclic graph 899PDB power distribution board 900PDF portable document format 901PDM pulse-duration modulation 902PDN pull-down network 903PDP page {descriptor,directory} page 904PDS product data sheet 905PDU protocol data unit 906PE protection enable 907PECI platform environment control interface 908PEP protocol extension protocol 909PER packed encoding rules 910PFS perfect forward secrecy 911PGAS partitioned global address space 912PGE page global enable 913PGP Pretty Good Privacy 914PHB PCI host bridge 915PHP PHP: Hypertext Preprocessor 916PIC position independent code 917PIC programmable interrupt controller 918PICNIC problem in chair, not in computer 919PID process id 920PIE position independent executable 921PIM personal information manager 922PIM platform-independent model 923PIO programmed input/output 924PIPT physically indexed, physically tagged 925PIQ prefetch input queue 926PIT programmable interrupt timer 927PIV personal identity verification 928PKCS public-key cryptography standards 929PKI public key infrastructure 930PLC programmable logic controller 931PLD programmable logic device 932PLL phase locked loop 933PLRU pseudo LRU 934PLTM package level thermal management 935PM power management 936PM {phase,pulse} modulation 937PME power management event 938PMI platform management interrupt 939PMIO port-mapped input/output 940PMT photo-multiplier tube 941PMU power management unit 942PNG portable network graphics 943PNP plug and play 944POE power over ethernet 945POF probability of failure 946POP Post Office Protocol 947POP power on password 948POSIX Portable Operating System Interface [for Unix] 949POST power on self test 950POTS plain old telephone system 951PP pair programming 952PPB PCI [to] PCI bridge 953PPC PowerPC 954PPI pixels per inch 955PPM pages per minute 956PPP Point-to-Point Protocol 957PPPOA Point-to-Point Protocol over ATM 958PPPOE Point-to-Point Protocol over Ethernet 959PPU physics processing unit 960PRBS pseudo-random bit sequence 961PRML partial response, maximum likelihood 962PRN pseudo random {noise,number} 963PRNG pseudo random number generator 964PROM programmable read only memory 965PSD power spectral density 966PSE page size extensions 967PSK phase shift keying 968PSK pre-shared key 969PSTN public switched telephone network 970PSW program status word 971PTE page table entry 972PTLA pseudo top level aggregator 973PTP page table page 974PTV perceived target value 975PU processing unit 976PUN physical unit number 977PV physical volume 978PVG physical volume group 979PVI protected-mode virtual interrupt 980PWM pulse width modulation 981PXE preboot execution environment 982QA quality assurance 983QAM quadrature amplitude modulation 984QAM quality assurance management 985QBE query by example 986QC quality control 987QDI quasi delay insensitive 988QOS quality of service 989R/O read only 990R/W read/write 991RA receiver address 992RA remote assistance 993RA resource affinity 994RA router advertisement 995RAD rapid application development 996RAID redundant array of {independent,inexpensive} disks 997RAM random access memory 998RAS reliability, availability and serviceability 999RAS remote access service 1000RAS restartable atomic sequence 1001RAS row address strobe 1002RBF radial basis function 1003RBT red-black tree 1004RC release candidate 1005RC remote control 1006RCS Revision Control System 1007RCS revision control system 1008RCU read, copy, update 1009RDB Rigid Disk Block 1010RDBMS relational database management system 1011RDF Resource Description Framework 1012RDM relational data model 1013RDMA remote direct memory access 1014RE regular expression 1015REST representational state transfer 1016RF radio frequency 1017RFI radio frequency interference 1018RFO request for ownership 1019RGB red green blue 1020RGBA red green blue alpha 1021RH read hit 1022RHEL Red Hat Enterprise Linux 1023RHL Red Hat Linux 1024RIB routing information base 1025RIFF Resource Interchange File Format 1026RIP Routing Information Protocol 1027RIR regional Internet registry 1028RISC reduced instruction set {computer,computing} 1029RKM ROM Kernel Manual 1030RLE run length encoding 1031RLL run length limited 1032RLO right-to-left override 1033RM read miss 1034RMI remote method invocation 1035RMPM rapid memory power management 1036RMS root mean square 1037RMW read, modify, write 1038RNG random number generator 1039ROM read only memory 1040RPC remote procedure call 1041RPL requested privilege level 1042RPM revolutions per minute 1043RPN reverse Polish notation 1044RR random replacement 1045RR round robin 1046RS relay station 1047RSA Rivest, Shamir, [and] Adleman 1048RSIP Realm Specific IP 1049RSS really simple syndication 1050RSS residual sum of squares 1051RT real time 1052RTC real time clock 1053RTC real time computing 1054RTF rich text format 1055RTL register transfer language 1056RTL resistor-transistor logic 1057RTL right to left 1058RTOS real time operating system 1059RTS request to send 1060RTT round trip time 1061RUP rational unified process 1062RWM read-write memory 1063RX {receive,receiver} 1064S/PDIF Sony/Philips Digital Interface Format 1065SA security advisory 1066SA security association 1067SA source address 1068SA structured analysis 1069SAAS software as a service 1070SACD super audio compact disc 1071SAD security association database 1072SAL system abstraction layer 1073SAM serial access memory 1074SAM sum addressed memory 1075SAN storage area network 1076SAPIC streamlined advanced programmable interrupt controller 1077SASD structured analysis, structured design 1078SASI Shugart Associates System Interface 1079SASL simple authentication [and] security layer 1080SATA serial advanced technology attachment 1081SB sound blaster 1082SBU standard build unit 1083SC store conditional 1084SCA source code analyzer 1085SCADA supervisory control and data acquisition 1086SCC single chip cloud 1087SCC source code control 1088SCCS Source Code Control System 1089SCI scalable coherent interface 1090SCI system control interrupt 1091SCM software configuration management 1092SCM source code management 1093SCM storage-class memory 1094SCP secure copy 1095SCSI Small Computer System Interface 1096SCTP Stream Control Transmission Protocol 1097SDI symbol deinterleave 1098SDK software development kit 1099SDL Simple Declarative Language 1100SDL Simple Direct-media Layer 1101SDRAM synchronous dynamic random access memory 1102SDT syntax-directed translation 1103SEGV segmentation violation 1104SEO search engine optimization 1105SFC sequential function chart 1106SFI simple firmware interface 1107SFI software fault isolation 1108SFTP SSH File Transfer Protocol 1109SFTP Serial File Transfer Protocol 1110SFTP Simple File Transfer Protocol 1111SGRAM synchronous graphics random access memory 1112SIFS short inter-frame space 1113SIMD single instruction, multiple data 1114SIMM single inline memory module 1115SIP Session Initiation Protocol 1116SIR signal-to-interference ratio 1117SIR slow infrared 1118SISD single instruction, single data 1119SLC single-level cell 1120SLDRAM synchronous-link dynamic random access memory 1121SLED single large expensive disk 1122SLI scalable link interface 1123SLI scan-line interleave 1124SLOC source lines of code 1125SLRU segmented LRU 1126SMA smart memory access 1127SMAF system management action field 1128SMART self-monitoring analysis and reporting technology 1129SMBIOS System Management BIOS 1130SMC system management controller 1131SMI structure of management information 1132SMI system management interrupt 1133SMM system management mode 1134SMP symmetric multiprocessing 1135SMT simultaneous multithreading 1136SMTP Simple Mail Transfer Protocol 1137SMU system management unit 1138SNMP Simple Network Management Protocol 1139SNR signal-to-noise ratio 1140SOA service oriented architecture 1141SOAP Simple Object Access Protocol 1142SOC system on chip 1143SOF start of frame 1144SOH start of header 1145SOHO small office/home office 1146SOL serial over LAN 1147SP service pack 1148SP stack pointer 1149SPARC scalable processor architecture 1150SPARQL SPARQL Protocol and RDF Query Language 1151SPD security policy database 1152SPD serial presence detect 1153SPDIF Sony/Philips digital interface format 1154SPI serial peripheral interface 1155SPI stateful packet inspection 1156SPMD single process, multiple data 1157SPR special purpose register 1158SPT sectors per track 1159SQA software quality assurance 1160SQL Structured Query Language 1161SRAM static random access memory 1162SRC sample rate conversion 1163SS self-snoop 1164SS stack segment 1165SSB single-sideband modulation 1166SSD solid state drive 1167SSE streaming SIMD extensions 1168SSFDC solid state floppy disc card 1169SSH secure shell 1170SSI server side includes 1171SSID service set identifier 1172SSL secure sockets layer 1173SSP stack smashing protection 1174STC software thermal control 1175STD state transition diagram 1176STP Spanning Tree Protocol 1177STP shielded twisted pair 1178SUS Single Unix Specification 1179SUT system under test 1180SVG scalable vector graphics 1181SVGA Super Video Graphics Array 1182SVM secure virtual machine 1183SVM support vector machine 1184SVR System V Release 1185SWF Shockwave Flash 1186SWIG simplified wrapper [and] interface generator 1187SYR symbol timing recovery 1188TA test assertion 1189TA transmitter address 1190TAI international atomic time 1191TAO track at once 1192TAOCP The Art of Computer Programming 1193TAP Test Anything Protocol 1194TAS test and set 1195TB terabyte 1196TCB trace capture buffer 1197TCB trusted computing base 1198TCC thermal control circuit 1199TCL tool command language 1200TCP Transmission Control Protocol 1201TCQ tagged command queueing 1202TDC time [to] digital converter 1203TDD test driven development 1204TDD time division duplex 1205TDM time division multiplexing 1206TDMA time division multiple access 1207TDOA time difference of arrival 1208TDP thermal design {point,power} 1209TECO Text Editor and Corrector 1210TFT thin film transistor 1211TFTP Trivial File Transfer Protocol 1212TIAS try it and see 1213TIFF tagged image file format 1214TITS try it to see 1215TK temporal key 1216TKIP Temporal Key Integrity Protocol 1217TLA top level aggregator 1218TLB translation lookaside buffer 1219TLD top level domain 1220TLS thread local storage 1221TLS transport layer security 1222TM Turing machine 1223TM thermal monitor 1224TMDS transition minimized differential signaling 1225TMO timeout 1226TOD time of day 1227TOS terms of service 1228TOS trusted operating system 1229TOS type of service 1230TP transaction processing 1231TPI tracks per inch 1232TPM transactions per minute 1233TPM trusted platform module 1234TPR task priority register 1235TPS transactions per second 1236TPS transmission parameters signaling 1237TR task register 1238TR token ring 1239TRL timing recovery loop 1240TRNG true random number generator 1241TS terminal services 1242TS time series 1243TS time stamp 1244TS transport stream 1245TSC time stamp counter 1246TSD time stamp disable 1247TSL test, set, lock 1248TSO time sharing option 1249TSP Time-Stamp Protocol 1250TSP Tunnel Setup Protocol 1251TSP time synchronization protocol 1252TSP traveling salesman problem 1253TSS task state segment 1254TTL time to live 1255TTL transistor-transistor logic 1256TTM translation table maps 1257TTY teletype 1258TUI {terminal,text-based,textual} user interface 1259TX {transmit out,transmitter} 1260TZ time zone 1261UAC user {access,account} control 1262UART universal asynchronous receiver/transmitter 1263UAT user acceptance testing 1264UC uncacheable 1265UCS uniform-cost search 1266UDMA ultra DMA 1267UDO ultra density optical 1268UDP User Datagram Protocol 1269UFS Unix File System 1270UI unit interval 1271UI user interface 1272UID unique identifier 1273UID user identifier 1274UL upload 1275UMA uniform memory access 1276UMA upper memory area 1277UMB upper memory block 1278UML unified modeling language 1279UMPC ultra-mobile PC 1280UPNP universal plug and play 1281UPS uninterruptible power supply 1282URI uniform resource identifier 1283URL uniform resource locator 1284URN uniform resource name 1285USART universal synchronous/asynchronous receiver/transmitter 1286USB universal serial bus 1287USWC uncacheable speculative write combining 1288UT unit test 1289UTC coordinated universal time 1290UTP unshielded twisted pair 1291UUCP Unix-to-Unix Copy Protocol 1292UUID universally unique identifier 1293UUOC useless use of cat 1294UUT unit under test 1295UX user experience 1296VA vertical alignment 1297VA virtual address 1298VA volt-ampere 1299VAX virtual address extension 1300VB Visual Basic 1301VCA variable-gain amplifier 1302VCC common collector voltage 1303VCF voltage-controlled filter 1304VCM virtual channel memory 1305VCO voltage-controlled oscillator 1306VCS version control system 1307VESA Video Electronics Standards Association 1308VFO variable-frequency oscillator 1309VG volume group 1310VGA Video Graphics Array 1311VHDCI very high density cable interconnect 1312VID voltage level identifier 1313VIPT virtually indexed, physically tagged 1314VIVT virtually indexed, virtually tagged 1315VLAN virtual local area network 1316VLIW very long instruction word 1317VLSI very large scale integration 1318VLSM variable length subnet mask 1319VM virtual {machine,memory} 1320VME virtual mode extension 1321VMX vector multimedia extensions 1322VMX virtual machine extensions 1323VOD video on demand 1324VPN virtual private network 1325VR virtual reality 1326VRAM video random access memory 1327VRM voltage regulator module 1328VRRP Virtual Router Redundancy Protocol 1329W watt 1330W3C World Wide Web Consortium 1331WAN wide area network 1332WAP Wireless Application Protocol 1333WAP wireless access point 1334WDT watchdog timer 1335WEP Wired Equivalent Privacy 1336WFI wait for interrupt 1337WFQ weighted fair queuing 1338WH write hit 1339WIFI wireless fidelity 1340WLAN wireless local area network 1341WM write miss 1342WMI Windows Management Instrumentation 1343WOL Wake-on-LAN 1344WOM Wake-on-Modem 1345WOR Wake-on-Ring 1346WORM write once read many 1347WP WordPerfect 1348WP word processor 1349WP write protect 1350WPA Wi-Fi Protected Access 1351WPA2 Wi-Fi Protected Access II 1352WPS Wi-Fi Protected Setup 1353WRAM window random access memory 1354WS web services 1355WTC write through caching 1356WWAN wireless wide area network 1357WWW world wide web 1358WYSIWYG what you see is what you get 1359XBAR crossbar 1360XDMCP X Display Manager control protocol 1361XER XML encoding rules 1362XGA Extended Graphics Array 1363XIP execute in place 1364XML Extensible Markup Language 1365XOR exclusive or 1366XP extreme programming 1367XSI X/Open System Interface 1368XSL extensible stylesheet language 1369XSS cross site scripting 1370XT extended technology 1371XUL XML user interface language 1372YACC yet another compiler compiler 1373YAWPFAPR you are welcome; please file a problem report 1374YP Yellow Pages 1375YTD year to date 1376ZBR zone bit recording 1377ZFOD zero-filled on demand 1378ZIF zero insertion force 1379ZIFS zero insertion force socket 1380ZMA zone multicast address 1381