acronyms.comp revision 1.160
1$NetBSD: acronyms.comp,v 1.160 2016/03/22 17:03:02 dholland 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 266DANE DNS-based Authentication of Named Entities 267DAO disk at once 268DAP Directory Access Protocol 269DAT digital audio tape 270DAT dynamic acceleration technology 271DB database 272DBA database administrator 273DBA dynamic bandwidth allocation 274DBB data bus buffer 275DBC design by contract 276DBL dynamic buffer limiting 277DBMS database management system 278DBS database server 279DC direct current 280DCC Direct Client-to-Client 281DCC direct cable connect 282DCD data carrier detect 283DCE data control equipment 284DCE distributed computing environment 285DCOM distributed component object model 286DCOP Desktop COmmunication Protocol 287DCS data collection systems 288DCT discrete cosine transform 289DCU data cache unit 290DDC display data channel 291DDE dynamic data exchange 292DDK device driver kit 293DDL data description language 294DDR double data rate 295DDS direct digital sound 296DDWG Digital Display Working Group 297DE debugging extensions 298DE desktop environment 299DEA data encryption algorithm 300DEK data encryption key 301DEP data execution prevention 302DER distinguished encoding rules 303DES Data Encryption Standard 304DF don't fragment 305DFA deterministic finite automaton 306DFC data flow control 307DFS depth first search 308DFS distributed file system 309DFT diagnostic function test 310DFT discrete Fourier transform 311DGL data generation language 312DH Diffie-Hellman 313DHCP Dynamic Host Configuration Protocol 314DIFS distributed inter-frame space 315DIMM dual inline memory module 316DIRT design in real time 317DL diode logic 318DL discrete logarithm 319DL download 320DLE data link escape 321DLL dynamic link library 322DLP discrete logarithm problem 323DMA direct memory access 324DMI desktop management interface 325DMS document management system 326DMT discrete multitone modulation 327DNARD Digital network appliance reference design 328DND drag and drop 329DNS Domain Name System 330DNSSEC DNS Security Extensions 331DOE distributed object environment 332DOF data over fibre 333DOM document object model 334DOS denial of service 335DOS disk operating system 336DP DisplayPort 337DPC deferred procedure call 338DPCM differential pulse code modulation 339DPD dead peer detection 340DPI deep packet inspection 341DPI dots per inch 342DPL descriptor privilege level 343DPS Display PostScript 344DPST display power savings technology 345DRAM dynamic random access memory 346DRI direct rendering infrastructure 347DRM digital rights management 348DRRS display refresh rate switching 349DS debug store 350DSA digital signature algorithm 351DSB double-sideband modulation 352DSDT differentiated system descriptor table 353DSL digital subscriber line 354DSL domain specific language 355DSLAM digital subscriber line access multiplexer 356DSN delivery status notification 357DSO dynamic shared object 358DSP digital signal processor 359DSSS direct sequence spread spectrum 360DTD document type definition 361DTE data terminal equipment 362DTE dumb terminal emulator 363DTL diode-transistor logic 364DTLS datagram transport layer security 365DTS digital thermal sensor 366DUT device under test 367DVB digital video broadcasting 368DVCS distributed version control system 369DVD digital versatile disc 370DVFS dynamic voltage and frequency scaling 371DVI device independent 372DVI Digital Visual Interface 373DVR digital video recorder 374E-XER extended XML encoding rules 375EABI embedded-application binary interface 376EAI Email Address Internationalization 377EAI Enterprise Application Integration 378EAP Extensible Authentication Protocol 379EBCDIC Extended Binary Coded Decimal Interchange Code 380EBR extended boot record 381EC elliptical curve 382ECC error correction code 383ECDL elliptical curve discrete logarithm 384ECDSA elliptical curve digital signature algorithm 385ECL emitter-coupled logic 386ECN explicit congestion notification 387ECP enhanced capability port 388ECS enhanced chip set 389ECS extended configuration space 390EDAT enhanced dynamic acceleration technology 391EDGE explicit data graph execution 392EDID extended display identification data 393EDO extended data out 394EDS electronical data sheet 395EEPROM electrically erasable programmable read only memory 396EFI extensible firmware interface 397EFL emitter follower logic 398EFM eight to fourteen modulation 399EGA Enhanced Graphics Adapter 400EGP exterior gateway protocol 401EH extension header 402EIDE enhanced IDE 403EISA extended industry standard architecture 404ELF executable and linking format 405ELS entry level system 406EMI electro-magnetic interference 407EMP electro-magnetic pulse 408EMR electro-magnetic radiation 409EOF end of file 410EOI end of interrupt 411EOL end of line 412EOT end of transmission 413EPIC explicitly parallel instruction computing 414EPP enhanced parallel port 415EPRML extended partial response, maximum likelihood 416EPROM erasable programmable read only memory 417ERD emergency recovery disk 418ERD entity relationship diagram 419ERE extended regular expression 420ESDRAM enhanced synchronous dynamic random access memory 421ESS electronic switching system 422ESS extended service set 423ESSID extended service set identifier 424EST enhanced speedstep 425ETL extract, transform, load 426EU execution unit 427EULA end user license agreement 428FAT file allocation table 429FBRAM frame buffer random access memory 430FCL fiber channel loop 431FCS frame check sequence 432FDC floppy disk controller 433FDD floppy disk drive 434FDDI fiber distributed data interface 435FDE full disk encryption 436FEA finite element analysis 437FEC forward error correction 438FET field-effect transistor 439FF form feed 440FFH functional fixed hardware 441FFI foreign function interface 442FFM focus follows mouse 443FFS Fast File System 444FFS find first set 445FFT fast Fourier transform 446FG floating gate 447FHSS frequency hop spread spectrum 448FID frequency identifier 449FIFO first in, first out 450FILO first in, last out 451FIR fast infrared 452FLOPS floating [point] operations per second 453FLOSS free/libre/open source software 454FM frequency modulation 455FMR false match rate 456FOSS free/open source software 457FPGA field programmable gate array 458FPM fast page mode 459FPR floating point register 460FPU floating point unit 461FQDN fully qualified domain name 462FRR false rejection rate 463FRU field replaceable unit 464FS file system 465FSB front side bus 466FSCK file system check 467FSF Free Software Foundation 468FSK frequency shift keying 469FSM finite-state machine 470FTA fault tree analysis 471FTL flash translation layer 472FTP File Transfer Protocol 473FTPS File Transfer Protocol Secure 474FUS fast user switching 475FWH firmware hub 476FWS folding white space 477GAL generic array logic 478GAS generic address structure 479GC garbage collector 480GCR group-coded recording 481GDT global descriptor table 482GEM graphics environment manager 483GEM graphics execution manager 484GENA general event notification architecture 485GHC Glasgow Haskell compiler 486GID group identifier 487GIF graphics interchange format 488GMCH graphics and memory controller hub 489GNU GNU's Not Unix 490GOP graphics output protocol 491GOT global offset table 492GPE general purpose event 493GPF general protection fault 494GPG GNU Privacy Guard 495GPL [GNU] General Public License 496GPR general purpose register 497GPS generalized processor sharing 498GPT GUID partition table 499GPU graphics processing unit 500GR golden ratio 501GRE generic routing encapsulation 502GSI global system interrupt 503GUI graphical user interface 504GUID globally unique identifier 505HA high availability 506HAL hardware abstraction layer 507HAT hashed array tree 508HBA host bus adapter 509HCF halt and catch fire 510HCI host controller interface 511HCI human-computer interaction 512HCL hardware compatibility list 513HDCP High-bandwidth Digital Content Protection 514HDD hard disk drive 515HDL hardware description language 516HDMI High-Definition Multimedia Interface 517HDTV high-definition television 518HF high frequency 519HFM highest frequency mode 520HID human interface device 521HLL high-level language 522HMA high memory area 523HMI human-machine interface 524HOOD hierarchical object oriented design 525HP Hewlett-Packard 526HPC high performance computing 527HPET high precision event timer 528HSM hardware security module 529HT hyper-threading 530HTC hardware thermal control 531HTCC high temperature co-fired ceramic 532HTML HyperText Markup Language 533HTT hyper-threading technology 534HTTP Hypertext Transfer Protocol 535HTTPS Hypertext Transfer Protocol Secure 536HVM hardware virtual machine 537HZ Hertz 538I2O intelligent input/output 539IA information assurance 540IANA Internet Assigned Numbers Authority 541IBC iterated block cipher 542IBM International Business Machines 543IBS instruction based sampling 544IBSS independent basic service set 545IC integrated circuit 546ICA independent computer architecture 547ICB Internet Citizen's Band 548ICE in-circuit emulator 549ICE internal compiler error 550ICH I/O controller hub 551ICMP Internet Control Message Protocol 552ICT information and communications technology 553ICW initialization command word 554IDA Intel dynamic acceleration 555IDCMP Intuition direct communication message port 556IDE integrated development environment 557IDE integrated drive electronics 558IDPS intrusion detection [and] prevention system 559IDRP inter-domain routing protocol 560IDS intrusion detection system 561IDT interrupt descriptor table 562IE Internet Explorer 563IEC International Electrotechnical Commission 564IEEE Institute of Electrical and Electronics Engineers 565IESG Internet Engineering Steering Group 566IETF Internet Engineering Task Force 567IF intermediate frequency 568IFCM isochronous flow control mode 569IFF Interchange File Format 570IGD Internet gateway device 571IGMP Internet Group Management Protocol 572IGP interior gateway protocol 573IHV independent hardware vendor 574IKE Internet key exchange 575ILM internal loopback mode 576ILOM integrated lights-out management 577ILP instruction level parallelism 578IM instant messaging 579IMAP Internet Message Access Protocol 580IMC integrated memory controller 581IMCR interrupt mode configuration register 582IMR interrupt mask register 583IMS information management system 584INCITS InterNational Committee for Information Technology Standards 585IO input/output 586IOCTL input/output control 587IOMMU input/output memory management unit 588IOT Internet of Things 589IP Internet Protocol 590IP intellectual property 591IPC interprocess communication 592IPE integrated programming environment 593IPI interprocessor interrupt 594IPNG Internet Protocol, Next Generation 595IPS in-plane switching 596IPS intrusion prevention system 597IPSEC Internet Protocol Security 598IRC Internet Relay Chat 599IRDA infrared data association 600IRQ interrupt request 601IRQL interrupt request level 602IRR interrupt request register 603IRTF Internet Research Task Force 604IS information system 605ISA industry standard architecture 606ISA instruction set architecture 607ISDN integrated services digital network 608ISI inter-symbol interference 609ISM industrial, scientific, [and] medical 610ISN initial serial number 611ISO International Standards Organization 612ISOC Internet Society 613ISP Internet service provider 614ISR in-service register 615ISR interrupt service routine 616IST interrupt stack table 617ISV independent software vendor 618IT information technology 619ITB Intel Turbo Boost 620IV initialization vector 621IVT interrupt vector table 622JBOD just a bunch of disks 623JFET junction [gate] field-effect transistor 624JIT just in time 625JPEG Joint Photographic Experts Group 626JRE Java Runtime Environment 627JTAG joint test action group 628KB keyboard 629KB kilobyte 630KBD keyboard 631KBD kilobaud 632KLOC thousand lines of code 633KMS kernel-mode setting 634KPI kernel programming interface 635KVA kernel virtual address 636KVM kernel virtual machine 637KVM kernel virtual memory 638KVM keyboard, video, [and] mouse 639LAMP Linux Apache MySQL {Perl,PHP,Python} 640LAN local area network 641LAPIC local advanced programmable interrupt controller 642LAR load access rights 643LBA logical block addressing 644LBS location-based service 645LCD liquid crystal display 646LCP link control protocol 647LDA local delivery agent 648LDAP Lightweight Directory Access Protocol 649LDR light-dependent resistor 650LDT local descriptor table 651LE logical extent 652LED light emitting diode 653LER label edge router 654LF line feed 655LF low frequency 656LFM lowest frequency mode 657LFN long file names 658LFO low-frequency oscillation 659LFS log-structured file system 660LFU least frequently used 661LHP loop heat pipe 662LIFO last in, first out 663LILO LInux LOader 664LILO last in, last out 665LINT local interrupt 666LIR local Internet registry 667LKM {Linux,loadable} kernel module 668LKML Linux kernel mailing list 669LL load linked 670LL/SC load linked/store conditional 671LLC logical link control 672LLDP link layer discovery protocol 673LLF low level format 674LLMNR link-local multicast name resolution 675LLVM Low Level Virtual Machine 676LM long mode 677LMM link management mode 678LNO loop nest optimization 679LOC lines of code 680LOM lights-out management 681LPC low pin count 682LPS local positioning system 683LRC longitudinal redundancy check 684LRM left-to-right mark 685LRO left-to-right override 686LRU least recently used 687LSB Linux standards base 688LSB least significant {bit,byte} 689LSI large scale integration 690LSL load segment limit 691LSN Large Scale NAT 692LSN log sequence number 693LSR label switch router 694LTCC low temperature co-fired ceramic 695LTO link time optimization 696LTR left to right 697LTR load task register 698LTR letter(-sized paper) 699LTS long term support 700LUA Lua Uppercase Accident 701LUN logical unit number 702LV logical volume 703LVM logical volume management 704LVT local vector table 705LWP light-weight process 706LZW Lempel Ziv Welch 707MAC mandatory access control 708MAC medium access control 709MAC message authentication {check,code} 710MADT multiple APIC descriptor table 711MB megabyte 712MBA multi-boot agent 713MBR master boot record 714MBS megabits per second 715MC memory controller 716MCA machine check architecture 717MCA MicroChannel architecture 718MCC multiversion concurrency control 719MCE machine check exception 720MCGA Multi-Color Graphics Array 721MCH memory controller hub 722MCM multi-chip module 723MCQ memory controlled queue 724MD machine-dependent 725MDA mail delivery agent 726MDA Monochrome Display Adapter 727MDRAM multibank dynamic random access memory 728MESI modified, exclusive, shared, invalid 729MFC merge from current 730MFC Microsoft Foundation Classes 731MFM modified frequency modulation 732MI machine-independent 733MIB management information base 734MIC message integrity {check,code} 735MID mobile Internet device 736MIDI musical instrument digital interface 737MIF management information format 738MIM man in the middle 739MIMD multiple instruction, multiple data 740MIME Multipurpose Internet Mail Extensions 741MIMO multiple input multiple output 742MIPS million instructions per second 743MISD multiple instruction, single data 744MIT Massachusetts Institute of Technology 745MITM man in the middle 746ML machine language 747ML machine learning 748ML mailing list 749ML markup language 750ML maximum likelihood 751MLC multi-level cell 752MLHP micro loop heat pipe 753MMIC monolithic microwave integrated circuit 754MMIO memory mapped input/output 755MMORPG massive multiplayer online role playing game 756MMU memory management unit 757MMX matrix math extension 758MMX multimedia extension 759MMX multiple math extension 760MO magneto-optical 761MOESI modified, owned, exclusive, shared, invalid 762MOF maximum operating frequency 763MOSFET metal-oxide-semiconductor field-effect transistor 764MOSI modified, owned, shared, invalid 765MP multi-platform 766MP multiplayer 767MP {multiprocessing,multiprocessor} 768MPEG moving picture experts group 769MPI message passing interface 770MPLS Multiprotocol Label Switching 771MPP massively parallel processor 772MPS memory pool system 773MPS multiprocessor specification 774MR modem ready 775MRU most recently used 776MS Microsoft 777MSB most significant {bit,byte} 778MSE mean square error 779MSF minutes seconds frames 780MSI message signaled interrupt 781MSI modified, shared, invalid 782MSR machine state register 783MSS maximum segment size 784MT machine translation 785MTA mail transfer agent 786MTBF mean time between failures 787MTP media transfer protocol 788MTRR memory type range register 789MTTF mean time to failure 790MTU maximum transmission unit 791MUA mail user agent 792MUD multi-user domain 793MVCC multiversion concurrency control 794MWE module width encoding 795MX mail exchange 796NACK negative acknowledgement 797NAN not a number 798NAPT Network Address Port Translation 799NAS network attached storage 800NAT network address translation 801NAV network allocation vector 802NC numerical control 803NCO numerically-controlled oscillator 804NCP Network Control Protocol 805NCQ native command queuing 806ND neighbor discovery 807NDFA nondeterministic finite automaton 808NE numeric error 809NFA nondeterministic finite automaton 810NFC near-field communication 811NFS network file system 812NIA next instruction address 813NIC network information center 814NIC network interface card 815NIDS network intrusion detection system 816NIP network interface protocol 817NIPS network intrusion prevention system 818NIS network information service 819NLS native language support 820NMI non-maskable interrupt 821NNTP Network News Transfer Protocol 822NOC network operations center 823NOP no operation 824NOS network operating system 825NP nondeterministic polynomial time 826NRZ non-return to zero 827NSA National Security Agency 828NTM non-deterministic Turing machine 829NTP Network Time Protocol 830NUMA non-uniform memory access 831NVRAM non-volatile random access memory 832NW not write-through 833NX no execute 834OAEP optimal asymmetric encryption padding 835OBO off by one 836OBOE off by one error 837OCL object constraint language 838OCR optical character recognition 839ODCM on-demand clock modulation 840ODT on-die termination 841OEM original equipment manufacturer 842OFDM orthogonal frequency division multiplexing 843OFET organic field-effect transistor 844OLAP online analytical processing 845OLE object linking and embedding 846OLTP online transaction processing 847ONFI open nand flash interface 848OO OpenOffice 849OO object oriented 850OOB out of band 851OOE out of order execution 852OOM out of memory 853OOO OpenOffice.org 854OOP object oriented programming 855OOPS object oriented programming systems 856OOSE object oriented software engineering 857OPM operations per minute 858OPS operations per second 859OQL Object Query Language 860ORB object request broker 861ORM object-relational mapping 862OS operating system 863OSD open source definition 864OSF open software foundation 865OSI Open Source Initiative 866OSI open systems interconnection 867OSPF open shortest path first 868OSPM OS power management 869OSS open sound system 870OSS open source software 871OSVW operating system visible workarounds 872OTP one time password 873OTP open telecom platform 874OU organizational unit 875OUI organizationally unique identifier 876OWL Web Ontology Language 877P2P PCI to PCI 878P2P peer to peer 879PA phase accumulator 880PA physical address 881PAC phase-amplitude converter 882PAE physical address extension 883PAL phase alternating line 884PAL programmable array logic 885PAM pluggable authentication modules 886PAM pulse amplitude modulation 887PAP password authentication protocol 888PAT page attribute table 889PAT port address translation 890PATA parallel ATA 891PAX portable archive exchange 892PBE pending break encoding 893PBE programming by example 894PC personal computer 895PC program counter 896PCB printed circuit board 897PCC Portable C Compiler 898PCD page-level cache disable 899PCE performance-monitor counter enable 900PCI peripheral component interconnect 901PCM phase change memory 902PCM pulse code modulation 903PCMCIA Personal Computer Memory Card International Association 904PCP Port Control Protocol 905PD public domain 906PDA personal digital assistant 907PDA pushdown automaton 908PDAG propositional directed acyclic graph 909PDB power distribution board 910PDF portable document format 911PDM pulse-duration modulation 912PDN pull-down network 913PDP page {descriptor,directory} page 914PDS product data sheet 915PDU protocol data unit 916PE protection enable 917PECI platform environment control interface 918PEP protocol extension protocol 919PER packed encoding rules 920PFS perfect forward secrecy 921PGAS partitioned global address space 922PGE page global enable 923PGP Pretty Good Privacy 924PHB PCI host bridge 925PHP PHP: Hypertext Preprocessor 926PIC position independent code 927PIC programmable interrupt controller 928PICNIC problem in chair, not in computer 929PID process id 930PIE position independent executable 931PIM personal information manager 932PIM platform-independent model 933PIO programmed input/output 934PIPT physically indexed, physically tagged 935PIQ prefetch input queue 936PIT programmable interrupt timer 937PIV personal identity verification 938PKCS public-key cryptography standards 939PKI public key infrastructure 940PLC programmable logic controller 941PLD programmable logic device 942PLL phase locked loop 943PLRU pseudo LRU 944PLTM package level thermal management 945PM power management 946PM {phase,pulse} modulation 947PME power management event 948PMI platform management interrupt 949PMIO port-mapped input/output 950PMT photo-multiplier tube 951PMU power management unit 952PNG portable network graphics 953PNP plug and play 954POE power over ethernet 955POF probability of failure 956POP Post Office Protocol 957POP power on password 958POSIX Portable Operating System Interface [for Unix] 959POST power on self test 960POTS plain old telephone system 961PP pair programming 962PPB PCI [to] PCI bridge 963PPC PowerPC 964PPI pixels per inch 965PPM pages per minute 966PPP Point-to-Point Protocol 967PPPOA Point-to-Point Protocol over ATM 968PPPOE Point-to-Point Protocol over Ethernet 969PPU physics processing unit 970PRBS pseudo-random bit sequence 971PRML partial response, maximum likelihood 972PRN pseudo random {noise,number} 973PRNG pseudo random number generator 974PROM programmable read only memory 975PSD power spectral density 976PSE page size extensions 977PSK phase shift keying 978PSK pre-shared key 979PSTN public switched telephone network 980PSW program status word 981PTE page table entry 982PTLA pseudo top level aggregator 983PTP page table page 984PTV perceived target value 985PU processing unit 986PUN physical unit number 987PV physical volume 988PVG physical volume group 989PVI protected-mode virtual interrupt 990PWM pulse width modulation 991PXE preboot execution environment 992QA quality assurance 993QAM quadrature amplitude modulation 994QAM quality assurance management 995QBE query by example 996QC quality control 997QDI quasi delay insensitive 998QOS quality of service 999R/O read only 1000R/W read/write 1001RA receiver address 1002RA remote assistance 1003RA resource affinity 1004RA router advertisement 1005RAD rapid application development 1006RAID redundant array of {independent,inexpensive} disks 1007RAM random access memory 1008RAS reliability, availability and serviceability 1009RAS remote access service 1010RAS restartable atomic sequence 1011RAS row address strobe 1012RBF radial basis function 1013RBT red-black tree 1014RC release candidate 1015RC remote control 1016RCS Revision Control System 1017RCS revision control system 1018RCU read, copy, update 1019RDB Rigid Disk Block 1020RDBMS relational database management system 1021RDF Resource Description Framework 1022RDM relational data model 1023RDMA remote direct memory access 1024RE regular expression 1025REST representational state transfer 1026RF radio frequency 1027RFI radio frequency interference 1028RFO request for ownership 1029RGB red green blue 1030RGBA red green blue alpha 1031RH read hit 1032RHEL Red Hat Enterprise Linux 1033RHL Red Hat Linux 1034RIB routing information base 1035RIFF Resource Interchange File Format 1036RIP Routing Information Protocol 1037RIR regional Internet registry 1038RISC reduced instruction set {computer,computing} 1039RKM ROM Kernel Manual 1040RLE run length encoding 1041RLL run length limited 1042RLO right-to-left override 1043RM read miss 1044RMI remote method invocation 1045RMPM rapid memory power management 1046RMS root mean square 1047RMW read, modify, write 1048RNG random number generator 1049ROM read only memory 1050RPC remote procedure call 1051RPL requested privilege level 1052RPM revolutions per minute 1053RPN reverse Polish notation 1054RR random replacement 1055RR round robin 1056RS relay station 1057RSA Rivest, Shamir, [and] Adleman 1058RSIP Realm Specific IP 1059RSS really simple syndication 1060RSS residual sum of squares 1061RT real time 1062RTC real time clock 1063RTC real time computing 1064RTF rich text format 1065RTL register transfer language 1066RTL resistor-transistor logic 1067RTL right to left 1068RTOS real time operating system 1069RTS request to send 1070RTT round trip time 1071RUP rational unified process 1072RWM read-write memory 1073RX {receive,receiver} 1074S/PDIF Sony/Philips Digital Interface Format 1075SA security advisory 1076SA security association 1077SA source address 1078SA structured analysis 1079SAAS software as a service 1080SACD super audio compact disc 1081SAD security association database 1082SAL system abstraction layer 1083SAM serial access memory 1084SAM sum addressed memory 1085SAN storage area network 1086SAPIC streamlined advanced programmable interrupt controller 1087SASD structured analysis, structured design 1088SASI Shugart Associates System Interface 1089SASL simple authentication [and] security layer 1090SATA serial advanced technology attachment 1091SB sound blaster 1092SBU standard build unit 1093SC store conditional 1094SCA source code analyzer 1095SCADA supervisory control and data acquisition 1096SCC single chip cloud 1097SCC source code control 1098SCCS Source Code Control System 1099SCI scalable coherent interface 1100SCI system control interrupt 1101SCM software configuration management 1102SCM source code management 1103SCM storage-class memory 1104SCP secure copy 1105SCSI Small Computer System Interface 1106SCTP Stream Control Transmission Protocol 1107SDI symbol deinterleave 1108SDK software development kit 1109SDL Simple Declarative Language 1110SDL Simple Direct-media Layer 1111SDRAM synchronous dynamic random access memory 1112SDT syntax-directed translation 1113SEGV segmentation violation 1114SEO search engine optimization 1115SFC sequential function chart 1116SFI simple firmware interface 1117SFI software fault isolation 1118SFTP SSH File Transfer Protocol 1119SFTP Serial File Transfer Protocol 1120SFTP Simple File Transfer Protocol 1121SGRAM synchronous graphics random access memory 1122SIFS short inter-frame space 1123SIMD single instruction, multiple data 1124SIMM single inline memory module 1125SIP Session Initiation Protocol 1126SIR signal-to-interference ratio 1127SIR slow infrared 1128SISD single instruction, single data 1129SLC single-level cell 1130SLDRAM synchronous-link dynamic random access memory 1131SLED single large expensive disk 1132SLI scalable link interface 1133SLI scan-line interleave 1134SLOC source lines of code 1135SLRU segmented LRU 1136SMA smart memory access 1137SMAF system management action field 1138SMART self-monitoring analysis and reporting technology 1139SMBIOS System Management BIOS 1140SMC system management controller 1141SMI structure of management information 1142SMI system management interrupt 1143SMM system management mode 1144SMP symmetric multiprocessing 1145SMT simultaneous multithreading 1146SMTP Simple Mail Transfer Protocol 1147SMU system management unit 1148SNMP Simple Network Management Protocol 1149SNR signal-to-noise ratio 1150SOA service oriented architecture 1151SOAP Simple Object Access Protocol 1152SOC system on chip 1153SOF start of frame 1154SOH start of header 1155SOHO small office/home office 1156SOL serial over LAN 1157SP service pack 1158SP stack pointer 1159SPARC scalable processor architecture 1160SPARQL SPARQL Protocol and RDF Query Language 1161SPD security policy database 1162SPD serial presence detect 1163SPDIF Sony/Philips digital interface format 1164SPI serial peripheral interface 1165SPI stateful packet inspection 1166SPMD single process, multiple data 1167SPR special purpose register 1168SPT sectors per track 1169SQA software quality assurance 1170SQL Structured Query Language 1171SRAM static random access memory 1172SRC sample rate conversion 1173SS self-snoop 1174SS stack segment 1175SSB single-sideband modulation 1176SSD solid state drive 1177SSE streaming SIMD extensions 1178SSFDC solid state floppy disc card 1179SSH secure shell 1180SSI server side includes 1181SSID service set identifier 1182SSL secure sockets layer 1183SSP stack smashing protection 1184STC software thermal control 1185STD state transition diagram 1186STP Spanning Tree Protocol 1187STP shielded twisted pair 1188SUS Single Unix Specification 1189SUT system under test 1190SVG scalable vector graphics 1191SVGA Super Video Graphics Array 1192SVM secure virtual machine 1193SVM support vector machine 1194SVR System V Release 1195SWF Shockwave Flash 1196SWIG simplified wrapper [and] interface generator 1197SYR symbol timing recovery 1198TA test assertion 1199TA transmitter address 1200TAI international atomic time 1201TAO track at once 1202TAOCP The Art of Computer Programming 1203TAP Test Anything Protocol 1204TAS test and set 1205TB terabyte 1206TCB trace capture buffer 1207TCB trusted computing base 1208TCC thermal control circuit 1209TCL tool command language 1210TCP Transmission Control Protocol 1211TCQ tagged command queueing 1212TDC time [to] digital converter 1213TDD test driven development 1214TDD time division duplex 1215TDM time division multiplexing 1216TDMA time division multiple access 1217TDOA time difference of arrival 1218TDP thermal design {point,power} 1219TECO Text Editor and Corrector 1220TFT thin film transistor 1221TFTP Trivial File Transfer Protocol 1222TIAS try it and see 1223TIFF tagged image file format 1224TITS try it to see 1225TK temporal key 1226TKIP Temporal Key Integrity Protocol 1227TLA top level aggregator 1228TLB translation lookaside buffer 1229TLD top level domain 1230TLS thread local storage 1231TLS transport layer security 1232TM Turing machine 1233TM thermal monitor 1234TMDS transition minimized differential signaling 1235TMO timeout 1236TOD time of day 1237TOS terms of service 1238TOS trusted operating system 1239TOS type of service 1240TP transaction processing 1241TPI tracks per inch 1242TPM transactions per minute 1243TPM trusted platform module 1244TPR task priority register 1245TPS transactions per second 1246TPS transmission parameters signaling 1247TR task register 1248TR token ring 1249TRL timing recovery loop 1250TRNG true random number generator 1251TS terminal services 1252TS time series 1253TS time stamp 1254TS transport stream 1255TSC time stamp counter 1256TSD time stamp disable 1257TSL test, set, lock 1258TSO time sharing option 1259TSP Time-Stamp Protocol 1260TSP Tunnel Setup Protocol 1261TSP time synchronization protocol 1262TSP traveling salesman problem 1263TSS task state segment 1264TTL time to live 1265TTL transistor-transistor logic 1266TTM translation table maps 1267TTY teletype 1268TUI {terminal,text-based,textual} user interface 1269TX {transmit out,transmitter} 1270TZ time zone 1271UAC user {access,account} control 1272UART universal asynchronous receiver/transmitter 1273UAT user acceptance testing 1274UC uncacheable 1275UCS uniform-cost search 1276UDMA ultra DMA 1277UDO ultra density optical 1278UDP User Datagram Protocol 1279UEFI unified extensible firmware interface 1280UFS Unix File System 1281UGA universal graphics adapter 1282UI unit interval 1283UI user interface 1284UID unique identifier 1285UID user identifier 1286UL upload 1287UMA uniform memory access 1288UMA upper memory area 1289UMB upper memory block 1290UML unified modeling language 1291UMPC ultra-mobile PC 1292UPNP universal plug and play 1293UPS uninterruptible power supply 1294URI uniform resource identifier 1295URL uniform resource locator 1296URN uniform resource name 1297USART universal synchronous/asynchronous receiver/transmitter 1298USB universal serial bus 1299USWC uncacheable speculative write combining 1300UT unit test 1301UTC coordinated universal time 1302UTP unshielded twisted pair 1303UUCP Unix-to-Unix Copy Protocol 1304UUID universally unique identifier 1305UUOC useless use of cat 1306UUT unit under test 1307UX user experience 1308VA vertical alignment 1309VA virtual address 1310VA volt-ampere 1311VAX virtual address extension 1312VB Visual Basic 1313VCA variable-gain amplifier 1314VCC common collector voltage 1315VCF voltage-controlled filter 1316VCM virtual channel memory 1317VCO voltage-controlled oscillator 1318VCS version control system 1319VESA Video Electronics Standards Association 1320VFO variable-frequency oscillator 1321VG volume group 1322VGA Video Graphics Array 1323VHDCI very high density cable interconnect 1324VID voltage level identifier 1325VIPT virtually indexed, physically tagged 1326VIVT virtually indexed, virtually tagged 1327VLAN virtual local area network 1328VLIW very long instruction word 1329VLSI very large scale integration 1330VLSM variable length subnet mask 1331VM virtual {machine,memory} 1332VME virtual mode extension 1333VMX vector multimedia extensions 1334VMX virtual machine extensions 1335VOD video on demand 1336VPN virtual private network 1337VR virtual reality 1338VRAM video random access memory 1339VRM voltage regulator module 1340VRRP Virtual Router Redundancy Protocol 1341W watt 1342W3C World Wide Web Consortium 1343WAN wide area network 1344WAP Wireless Application Protocol 1345WAP wireless access point 1346WDT watchdog timer 1347WEP Wired Equivalent Privacy 1348WFI wait for interrupt 1349WFQ weighted fair queuing 1350WH write hit 1351WIFI wireless fidelity 1352WLAN wireless local area network 1353WM write miss 1354WMI Windows Management Instrumentation 1355WOL Wake-on-LAN 1356WOM Wake-on-Modem 1357WOR Wake-on-Ring 1358WORM write once read many 1359WP WordPerfect 1360WP word processor 1361WP write protect 1362WPA Wi-Fi Protected Access 1363WPA2 Wi-Fi Protected Access II 1364WPS Wi-Fi Protected Setup 1365WRAM window random access memory 1366WS web services 1367WTC write through caching 1368WWAN wireless wide area network 1369WWW world wide web 1370WYSIWYG what you see is what you get 1371XBAR crossbar 1372XDMCP X Display Manager control protocol 1373XER XML encoding rules 1374XGA Extended Graphics Array 1375XIP execute in place 1376XML Extensible Markup Language 1377XOR exclusive or 1378XP extreme programming 1379XSI X/Open System Interface 1380XSL extensible stylesheet language 1381XSS cross site scripting 1382XT extended technology 1383XUL XML user interface language 1384YACC yet another compiler compiler 1385YAWPFAPR you are welcome; please file a problem report 1386YP Yellow Pages 1387YTD year to date 1388ZBR zone bit recording 1389ZFOD zero-filled on demand 1390ZIF zero insertion force 1391ZIFS zero insertion force socket 1392ZMA zone multicast address 1393