acronyms.comp revision 1.162
1$NetBSD: acronyms.comp,v 1.162 2016/04/21 23:14:25 riastradh 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 529HSM hierarchical storage management 530HT hyper-threading 531HTC hardware thermal control 532HTCC high temperature co-fired ceramic 533HTML HyperText Markup Language 534HTT hyper-threading technology 535HTTP Hypertext Transfer Protocol 536HTTPS Hypertext Transfer Protocol Secure 537HVM hardware virtual machine 538HZ Hertz 539I2O intelligent input/output 540IA information assurance 541IANA Internet Assigned Numbers Authority 542IBC iterated block cipher 543IBM International Business Machines 544IBS instruction based sampling 545IBSS independent basic service set 546IC integrated circuit 547ICA independent computer architecture 548ICB Internet Citizen's Band 549ICE in-circuit emulator 550ICE internal compiler error 551ICH I/O controller hub 552ICMP Internet Control Message Protocol 553ICT information and communications technology 554ICW initialization command word 555IDA Intel dynamic acceleration 556IDCMP Intuition direct communication message port 557IDE integrated development environment 558IDE integrated drive electronics 559IDPS intrusion detection [and] prevention system 560IDRP inter-domain routing protocol 561IDS intrusion detection system 562IDT interrupt descriptor table 563IE Internet Explorer 564IEC International Electrotechnical Commission 565IEEE Institute of Electrical and Electronics Engineers 566IESG Internet Engineering Steering Group 567IETF Internet Engineering Task Force 568IF intermediate frequency 569IFCM isochronous flow control mode 570IFF Interchange File Format 571IGD Internet gateway device 572IGMP Internet Group Management Protocol 573IGP interior gateway protocol 574IHV independent hardware vendor 575IKE Internet key exchange 576ILM internal loopback mode 577ILOM integrated lights-out management 578ILP instruction level parallelism 579IM instant messaging 580IMAP Internet Message Access Protocol 581IMC integrated memory controller 582IMCR interrupt mode configuration register 583IMR interrupt mask register 584IMS information management system 585INCITS InterNational Committee for Information Technology Standards 586IO input/output 587IOCTL input/output control 588IOMMU input/output memory management unit 589IOT Internet of Things 590IP Internet Protocol 591IP intellectual property 592IPC interprocess communication 593IPE integrated programming environment 594IPI interprocessor interrupt 595IPNG Internet Protocol, Next Generation 596IPS in-plane switching 597IPS intrusion prevention system 598IPSEC Internet Protocol Security 599IRC Internet Relay Chat 600IRDA infrared data association 601IRQ interrupt request 602IRQL interrupt request level 603IRR interrupt request register 604IRTF Internet Research Task Force 605IS information system 606ISA industry standard architecture 607ISA instruction set architecture 608ISDN integrated services digital network 609ISI inter-symbol interference 610ISM industrial, scientific, [and] medical 611ISN initial serial number 612ISO International Standards Organization 613ISOC Internet Society 614ISP Internet service provider 615ISR in-service register 616ISR interrupt service routine 617IST interrupt stack table 618ISV independent software vendor 619IT information technology 620ITB Intel Turbo Boost 621IV initialization vector 622IVT interrupt vector table 623JBOD just a bunch of disks 624JFET junction [gate] field-effect transistor 625JIT just in time 626JPEG Joint Photographic Experts Group 627JRE Java Runtime Environment 628JTAG joint test action group 629KB keyboard 630KB kilobyte 631KBD keyboard 632KBD kilobaud 633KLOC thousand lines of code 634KMS kernel-mode setting 635KPI kernel programming interface 636KVA kernel virtual address 637KVM kernel virtual machine 638KVM kernel virtual memory 639KVM keyboard, video, [and] mouse 640LAMP Linux Apache MySQL {Perl,PHP,Python} 641LAN local area network 642LAPIC local advanced programmable interrupt controller 643LAR load access rights 644LBA logical block addressing 645LBS location-based service 646LCD liquid crystal display 647LCP link control protocol 648LDA local delivery agent 649LDAP Lightweight Directory Access Protocol 650LDR light-dependent resistor 651LDT local descriptor table 652LE logical extent 653LED light emitting diode 654LER label edge router 655LF line feed 656LF low frequency 657LFM lowest frequency mode 658LFN long file names 659LFO low-frequency oscillation 660LFS log-structured file system 661LFU least frequently used 662LHP loop heat pipe 663LIFO last in, first out 664LILO LInux LOader 665LILO last in, last out 666LINT local interrupt 667LIR local Internet registry 668LKM {Linux,loadable} kernel module 669LKML Linux kernel mailing list 670LL load linked 671LL/SC load linked/store conditional 672LLC logical link control 673LLDP link layer discovery protocol 674LLF low level format 675LLMNR link-local multicast name resolution 676LLVM Low Level Virtual Machine 677LM long mode 678LMM link management mode 679LNO loop nest optimization 680LOC lines of code 681LOM lights-out management 682LPC low pin count 683LPS local positioning system 684LRC longitudinal redundancy check 685LRM left-to-right mark 686LRO left-to-right override 687LRU least recently used 688LSB Linux standards base 689LSB least significant {bit,byte} 690LSI large scale integration 691LSL load segment limit 692LSN Large Scale NAT 693LSN log sequence number 694LSR label switch router 695LTCC low temperature co-fired ceramic 696LTO link time optimization 697LTR left to right 698LTR load task register 699LTR letter(-sized paper) 700LTS long term support 701LUA Lua Uppercase Accident 702LUN logical unit number 703LV logical volume 704LVM logical volume management 705LVT local vector table 706LWP light-weight process 707LZW Lempel Ziv Welch 708MAC mandatory access control 709MAC medium access control 710MAC message authentication {check,code} 711MADT multiple APIC descriptor table 712MB megabyte 713MBA multi-boot agent 714MBR master boot record 715MBS megabits per second 716MC memory controller 717MCA machine check architecture 718MCA MicroChannel architecture 719MCC multiversion concurrency control 720MCE machine check exception 721MCGA Multi-Color Graphics Array 722MCH memory controller hub 723MCM multi-chip module 724MCQ memory controlled queue 725MD machine-dependent 726MDA mail delivery agent 727MDA Monochrome Display Adapter 728MDRAM multibank dynamic random access memory 729MESI modified, exclusive, shared, invalid 730MFC merge from current 731MFC Microsoft Foundation Classes 732MFM modified frequency modulation 733MI machine-independent 734MIB management information base 735MIC message integrity {check,code} 736MID mobile Internet device 737MIDI musical instrument digital interface 738MIF management information format 739MIM man in the middle 740MIMD multiple instruction, multiple data 741MIME Multipurpose Internet Mail Extensions 742MIMO multiple input multiple output 743MIPS million instructions per second 744MISD multiple instruction, single data 745MIT Massachusetts Institute of Technology 746MITM man in the middle 747ML machine language 748ML machine learning 749ML mailing list 750ML markup language 751ML maximum likelihood 752MLC multi-level cell 753MLD multicast listener discovery 754MLHP micro loop heat pipe 755MMIC monolithic microwave integrated circuit 756MMIO memory mapped input/output 757MMORPG massive multiplayer online role playing game 758MMU memory management unit 759MMX matrix math extension 760MMX multimedia extension 761MMX multiple math extension 762MO magneto-optical 763MOESI modified, owned, exclusive, shared, invalid 764MOF maximum operating frequency 765MOSFET metal-oxide-semiconductor field-effect transistor 766MOSI modified, owned, shared, invalid 767MP multi-platform 768MP multiplayer 769MP {multiprocessing,multiprocessor} 770MPEG moving picture experts group 771MPI message passing interface 772MPLS Multiprotocol Label Switching 773MPP massively parallel processor 774MPS memory pool system 775MPS multiprocessor specification 776MR modem ready 777MRU most recently used 778MS Microsoft 779MSB most significant {bit,byte} 780MSE mean square error 781MSF minutes seconds frames 782MSI message signaled interrupt 783MSI modified, shared, invalid 784MSR machine state register 785MSS maximum segment size 786MT machine translation 787MTA mail transfer agent 788MTBF mean time between failures 789MTP media transfer protocol 790MTRR memory type range register 791MTTF mean time to failure 792MTU maximum transmission unit 793MUA mail user agent 794MUD multi-user domain 795MVCC multiversion concurrency control 796MWE module width encoding 797MX mail exchange 798NACK negative acknowledgement 799NAN not a number 800NAPT Network Address Port Translation 801NAS network attached storage 802NAT network address translation 803NAV network allocation vector 804NC numerical control 805NCO numerically-controlled oscillator 806NCP Network Control Protocol 807NCQ native command queuing 808ND neighbor discovery 809NDFA nondeterministic finite automaton 810NE numeric error 811NFA nondeterministic finite automaton 812NFC near-field communication 813NFS network file system 814NIA next instruction address 815NIC network information center 816NIC network interface card 817NIDS network intrusion detection system 818NIP network interface protocol 819NIPS network intrusion prevention system 820NIS network information service 821NLS native language support 822NMI non-maskable interrupt 823NNTP Network News Transfer Protocol 824NOC network operations center 825NOP no operation 826NOS network operating system 827NP nondeterministic polynomial time 828NRZ non-return to zero 829NSA National Security Agency 830NTM non-deterministic Turing machine 831NTP Network Time Protocol 832NUMA non-uniform memory access 833NVRAM non-volatile random access memory 834NW not write-through 835NX no execute 836OAEP optimal asymmetric encryption padding 837OBO off by one 838OBOE off by one error 839OCL object constraint language 840OCR optical character recognition 841ODCM on-demand clock modulation 842ODT on-die termination 843OEM original equipment manufacturer 844OFDM orthogonal frequency division multiplexing 845OFET organic field-effect transistor 846OLAP online analytical processing 847OLE object linking and embedding 848OLTP online transaction processing 849ONFI open nand flash interface 850OO OpenOffice 851OO object oriented 852OOB out of band 853OOE out of order execution 854OOM out of memory 855OOO OpenOffice.org 856OOP object oriented programming 857OOPS object oriented programming systems 858OOSE object oriented software engineering 859OPM operations per minute 860OPS operations per second 861OQL Object Query Language 862ORB object request broker 863ORM object-relational mapping 864OS operating system 865OSD open source definition 866OSF open software foundation 867OSI Open Source Initiative 868OSI open systems interconnection 869OSPF open shortest path first 870OSPM OS power management 871OSS open sound system 872OSS open source software 873OSVW operating system visible workarounds 874OTP one time password 875OTP open telecom platform 876OU organizational unit 877OUI organizationally unique identifier 878OWL Web Ontology Language 879P2P PCI to PCI 880P2P peer to peer 881PA phase accumulator 882PA physical address 883PAC phase-amplitude converter 884PAE physical address extension 885PAL phase alternating line 886PAL programmable array logic 887PAM pluggable authentication modules 888PAM pulse amplitude modulation 889PAP password authentication protocol 890PAT page attribute table 891PAT port address translation 892PATA parallel ATA 893PAX portable archive exchange 894PBE pending break encoding 895PBE programming by example 896PC personal computer 897PC program counter 898PCB printed circuit board 899PCC Portable C Compiler 900PCD page-level cache disable 901PCE performance-monitor counter enable 902PCI peripheral component interconnect 903PCM phase change memory 904PCM pulse code modulation 905PCMCIA Personal Computer Memory Card International Association 906PCP Port Control Protocol 907PD public domain 908PDA personal digital assistant 909PDA pushdown automaton 910PDAG propositional directed acyclic graph 911PDB power distribution board 912PDF portable document format 913PDM pulse-duration modulation 914PDN pull-down network 915PDP page {descriptor,directory} page 916PDS product data sheet 917PDU protocol data unit 918PE protection enable 919PECI platform environment control interface 920PEP protocol extension protocol 921PER packed encoding rules 922PFS perfect forward secrecy 923PGAS partitioned global address space 924PGE page global enable 925PGP Pretty Good Privacy 926PHB PCI host bridge 927PHP PHP: Hypertext Preprocessor 928PIC position independent code 929PIC programmable interrupt controller 930PICNIC problem in chair, not in computer 931PID process id 932PIE position independent executable 933PIM personal information manager 934PIM platform-independent model 935PIO programmed input/output 936PIPT physically indexed, physically tagged 937PIQ prefetch input queue 938PIT programmable interrupt timer 939PIV personal identity verification 940PKCS public-key cryptography standards 941PKI public key infrastructure 942PLC programmable logic controller 943PLD programmable logic device 944PLL phase locked loop 945PLRU pseudo LRU 946PLTM package level thermal management 947PM power management 948PM {phase,pulse} modulation 949PME power management event 950PMI platform management interrupt 951PMIO port-mapped input/output 952PMT photo-multiplier tube 953PMU power management unit 954PNG portable network graphics 955PNP plug and play 956POE power over ethernet 957POF probability of failure 958POP Post Office Protocol 959POP power on password 960POSIX Portable Operating System Interface [for Unix] 961POST power on self test 962POTS plain old telephone system 963PP pair programming 964PPB PCI [to] PCI bridge 965PPC PowerPC 966PPI pixels per inch 967PPM pages per minute 968PPP Point-to-Point Protocol 969PPPOA Point-to-Point Protocol over ATM 970PPPOE Point-to-Point Protocol over Ethernet 971PPU physics processing unit 972PRBS pseudo-random bit sequence 973PRML partial response, maximum likelihood 974PRN pseudo random {noise,number} 975PRNG pseudo random number generator 976PROM programmable read only memory 977PSD power spectral density 978PSE page size extensions 979PSK phase shift keying 980PSK pre-shared key 981PSTN public switched telephone network 982PSW program status word 983PTE page table entry 984PTLA pseudo top level aggregator 985PTP page table page 986PTV perceived target value 987PU processing unit 988PUN physical unit number 989PV physical volume 990PVG physical volume group 991PVI protected-mode virtual interrupt 992PWM pulse width modulation 993PXE preboot execution environment 994QA quality assurance 995QAM quadrature amplitude modulation 996QAM quality assurance management 997QBE query by example 998QC quality control 999QDI quasi delay insensitive 1000QOS quality of service 1001R/O read only 1002R/W read/write 1003RA receiver address 1004RA remote assistance 1005RA resource affinity 1006RA router advertisement 1007RAD rapid application development 1008RAID redundant array of {independent,inexpensive} disks 1009RAM random access memory 1010RAS reliability, availability and serviceability 1011RAS remote access service 1012RAS restartable atomic sequence 1013RAS row address strobe 1014RBF radial basis function 1015RBT red-black tree 1016RC release candidate 1017RC remote control 1018RCS Revision Control System 1019RCS revision control system 1020RCU read, copy, update 1021RDB Rigid Disk Block 1022RDBMS relational database management system 1023RDF Resource Description Framework 1024RDM relational data model 1025RDMA remote direct memory access 1026RE regular expression 1027REST representational state transfer 1028RF radio frequency 1029RFI radio frequency interference 1030RFO request for ownership 1031RGB red green blue 1032RGBA red green blue alpha 1033RH read hit 1034RHEL Red Hat Enterprise Linux 1035RHL Red Hat Linux 1036RIB routing information base 1037RIFF Resource Interchange File Format 1038RIP Routing Information Protocol 1039RIR regional Internet registry 1040RISC reduced instruction set {computer,computing} 1041RKM ROM Kernel Manual 1042RLE run length encoding 1043RLL run length limited 1044RLO right-to-left override 1045RM read miss 1046RMI remote method invocation 1047RMPM rapid memory power management 1048RMS root mean square 1049RMW read, modify, write 1050RNG random number generator 1051ROM read only memory 1052RPC remote procedure call 1053RPL requested privilege level 1054RPM revolutions per minute 1055RPN reverse Polish notation 1056RR random replacement 1057RR round robin 1058RS relay station 1059RSA Rivest, Shamir, [and] Adleman 1060RSIP Realm Specific IP 1061RSS really simple syndication 1062RSS residual sum of squares 1063RT real time 1064RTC real time clock 1065RTC real time computing 1066RTF rich text format 1067RTL register transfer language 1068RTL resistor-transistor logic 1069RTL right to left 1070RTOS real time operating system 1071RTS request to send 1072RTT round trip time 1073RUP rational unified process 1074RWM read-write memory 1075RX {receive,receiver} 1076S/PDIF Sony/Philips Digital Interface Format 1077SA security advisory 1078SA security association 1079SA source address 1080SA structured analysis 1081SAAS software as a service 1082SACD super audio compact disc 1083SAD security association database 1084SAL system abstraction layer 1085SAM serial access memory 1086SAM sum addressed memory 1087SAN storage area network 1088SAPIC streamlined advanced programmable interrupt controller 1089SASD structured analysis, structured design 1090SASI Shugart Associates System Interface 1091SASL simple authentication [and] security layer 1092SATA serial advanced technology attachment 1093SB sound blaster 1094SBU standard build unit 1095SC store conditional 1096SCA source code analyzer 1097SCADA supervisory control and data acquisition 1098SCC single chip cloud 1099SCC source code control 1100SCCS Source Code Control System 1101SCI scalable coherent interface 1102SCI system control interrupt 1103SCM software configuration management 1104SCM source code management 1105SCM storage-class memory 1106SCP secure copy 1107SCSI Small Computer System Interface 1108SCTP Stream Control Transmission Protocol 1109SDI symbol deinterleave 1110SDK software development kit 1111SDL Simple Declarative Language 1112SDL Simple Direct-media Layer 1113SDRAM synchronous dynamic random access memory 1114SDT syntax-directed translation 1115SEGV segmentation violation 1116SEO search engine optimization 1117SFC sequential function chart 1118SFI simple firmware interface 1119SFI software fault isolation 1120SFTP SSH File Transfer Protocol 1121SFTP Serial File Transfer Protocol 1122SFTP Simple File Transfer Protocol 1123SGRAM synchronous graphics random access memory 1124SIFS short inter-frame space 1125SIMD single instruction, multiple data 1126SIMM single inline memory module 1127SIP Session Initiation Protocol 1128SIR signal-to-interference ratio 1129SIR slow infrared 1130SISD single instruction, single data 1131SLC single-level cell 1132SLDRAM synchronous-link dynamic random access memory 1133SLED single large expensive disk 1134SLI scalable link interface 1135SLI scan-line interleave 1136SLOC source lines of code 1137SLRU segmented LRU 1138SMA smart memory access 1139SMAF system management action field 1140SMART self-monitoring analysis and reporting technology 1141SMBIOS System Management BIOS 1142SMC system management controller 1143SMI structure of management information 1144SMI system management interrupt 1145SMM system management mode 1146SMP symmetric multiprocessing 1147SMT simultaneous multithreading 1148SMTP Simple Mail Transfer Protocol 1149SMU system management unit 1150SNMP Simple Network Management Protocol 1151SNR signal-to-noise ratio 1152SOA service oriented architecture 1153SOAP Simple Object Access Protocol 1154SOC system on chip 1155SOF start of frame 1156SOH start of header 1157SOHO small office/home office 1158SOL serial over LAN 1159SP service pack 1160SP stack pointer 1161SPARC scalable processor architecture 1162SPARQL SPARQL Protocol and RDF Query Language 1163SPD security policy database 1164SPD serial presence detect 1165SPDIF Sony/Philips digital interface format 1166SPI serial peripheral interface 1167SPI stateful packet inspection 1168SPMD single process, multiple data 1169SPR special purpose register 1170SPT sectors per track 1171SQA software quality assurance 1172SQL Structured Query Language 1173SRAM static random access memory 1174SRC sample rate conversion 1175SS self-snoop 1176SS stack segment 1177SSB single-sideband modulation 1178SSD solid state drive 1179SSE streaming SIMD extensions 1180SSFDC solid state floppy disc card 1181SSH secure shell 1182SSI server side includes 1183SSID service set identifier 1184SSL secure sockets layer 1185SSP stack smashing protection 1186STC software thermal control 1187STD state transition diagram 1188STP Spanning Tree Protocol 1189STP shielded twisted pair 1190SUS Single Unix Specification 1191SUT system under test 1192SVG scalable vector graphics 1193SVGA Super Video Graphics Array 1194SVM secure virtual machine 1195SVM support vector machine 1196SVR System V Release 1197SWF Shockwave Flash 1198SWIG simplified wrapper [and] interface generator 1199SYR symbol timing recovery 1200TA test assertion 1201TA transmitter address 1202TAI international atomic time 1203TAO track at once 1204TAOCP The Art of Computer Programming 1205TAP Test Anything Protocol 1206TAS test and set 1207TB terabyte 1208TCB trace capture buffer 1209TCB trusted computing base 1210TCC thermal control circuit 1211TCL tool command language 1212TCP Transmission Control Protocol 1213TCQ tagged command queueing 1214TDC time [to] digital converter 1215TDD test driven development 1216TDD time division duplex 1217TDM time division multiplexing 1218TDMA time division multiple access 1219TDOA time difference of arrival 1220TDP thermal design {point,power} 1221TECO Text Editor and Corrector 1222TFT thin film transistor 1223TFTP Trivial File Transfer Protocol 1224TIAS try it and see 1225TIFF tagged image file format 1226TITS try it to see 1227TK temporal key 1228TKIP Temporal Key Integrity Protocol 1229TLA top level aggregator 1230TLB translation lookaside buffer 1231TLD top level domain 1232TLS thread local storage 1233TLS transport layer security 1234TM Turing machine 1235TM thermal monitor 1236TMDS transition minimized differential signaling 1237TMO timeout 1238TOD time of day 1239TOS terms of service 1240TOS trusted operating system 1241TOS type of service 1242TP transaction processing 1243TPI tracks per inch 1244TPM transactions per minute 1245TPM trusted platform module 1246TPR task priority register 1247TPS transactions per second 1248TPS transmission parameters signaling 1249TR task register 1250TR token ring 1251TRL timing recovery loop 1252TRNG true random number generator 1253TS terminal services 1254TS time series 1255TS time stamp 1256TS transport stream 1257TSC time stamp counter 1258TSD time stamp disable 1259TSL test, set, lock 1260TSO time sharing option 1261TSP Time-Stamp Protocol 1262TSP Tunnel Setup Protocol 1263TSP time synchronization protocol 1264TSP traveling salesman problem 1265TSS task state segment 1266TTL time to live 1267TTL transistor-transistor logic 1268TTM translation table maps 1269TTY teletype 1270TUI {terminal,text-based,textual} user interface 1271TX {transmit out,transmitter} 1272TZ time zone 1273UAC user {access,account} control 1274UART universal asynchronous receiver/transmitter 1275UAT user acceptance testing 1276UC uncacheable 1277UCS uniform-cost search 1278UDMA ultra DMA 1279UDO ultra density optical 1280UDP User Datagram Protocol 1281UEFI unified extensible firmware interface 1282UFS Unix File System 1283UGA universal graphics adapter 1284UI unit interval 1285UI user interface 1286UID unique identifier 1287UID user identifier 1288UL upload 1289UMA uniform memory access 1290UMA upper memory area 1291UMB upper memory block 1292UML unified modeling language 1293UMPC ultra-mobile PC 1294UPNP universal plug and play 1295UPS uninterruptible power supply 1296URI uniform resource identifier 1297URL uniform resource locator 1298URN uniform resource name 1299USART universal synchronous/asynchronous receiver/transmitter 1300USB universal serial bus 1301USWC uncacheable speculative write combining 1302UT unit test 1303UTC coordinated universal time 1304UTP unshielded twisted pair 1305UUCP Unix-to-Unix Copy Protocol 1306UUID universally unique identifier 1307UUOC useless use of cat 1308UUT unit under test 1309UX user experience 1310VA vertical alignment 1311VA virtual address 1312VA volt-ampere 1313VAX virtual address extension 1314VB Visual Basic 1315VCA variable-gain amplifier 1316VCC common collector voltage 1317VCF voltage-controlled filter 1318VCM virtual channel memory 1319VCO voltage-controlled oscillator 1320VCS version control system 1321VESA Video Electronics Standards Association 1322VFO variable-frequency oscillator 1323VG volume group 1324VGA Video Graphics Array 1325VHDCI very high density cable interconnect 1326VID voltage level identifier 1327VIPT virtually indexed, physically tagged 1328VIVT virtually indexed, virtually tagged 1329VLAN virtual local area network 1330VLIW very long instruction word 1331VLSI very large scale integration 1332VLSM variable length subnet mask 1333VM virtual {machine,memory} 1334VME virtual mode extension 1335VMX vector multimedia extensions 1336VMX virtual machine extensions 1337VOD video on demand 1338VPN virtual private network 1339VR virtual reality 1340VRAM video random access memory 1341VRM voltage regulator module 1342VRRP Virtual Router Redundancy Protocol 1343W watt 1344W3C World Wide Web Consortium 1345WAN wide area network 1346WAP Wireless Application Protocol 1347WAP wireless access point 1348WDT watchdog timer 1349WEP Wired Equivalent Privacy 1350WFI wait for interrupt 1351WFQ weighted fair queuing 1352WH write hit 1353WIFI wireless fidelity 1354WLAN wireless local area network 1355WM write miss 1356WMI Windows Management Instrumentation 1357WOL Wake-on-LAN 1358WOM Wake-on-Modem 1359WOR Wake-on-Ring 1360WORM write once read many 1361WP WordPerfect 1362WP word processor 1363WP write protect 1364WPA Wi-Fi Protected Access 1365WPA2 Wi-Fi Protected Access II 1366WPS Wi-Fi Protected Setup 1367WRAM window random access memory 1368WS web services 1369WTC write through caching 1370WWAN wireless wide area network 1371WWW world wide web 1372WYSIWYG what you see is what you get 1373XBAR crossbar 1374XDMCP X Display Manager control protocol 1375XER XML encoding rules 1376XGA Extended Graphics Array 1377XIP execute in place 1378XML Extensible Markup Language 1379XOR exclusive or 1380XP extreme programming 1381XSI X/Open System Interface 1382XSL extensible stylesheet language 1383XSS cross site scripting 1384XT extended technology 1385XUL XML user interface language 1386YACC yet another compiler compiler 1387YAWPFAPR you are welcome; please file a problem report 1388YP Yellow Pages 1389YTD year to date 1390ZBR zone bit recording 1391ZFOD zero-filled on demand 1392ZIF zero insertion force 1393ZIFS zero insertion force socket 1394ZMA zone multicast address 1395