acronyms.comp revision 1.158
1$NetBSD: acronyms.comp,v 1.158 2016/01/28 10:20:40 pgoyette 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 enhanced 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 485GOP graphics output protocol 486GOT global offset table 487GPE general purpose event 488GPF general protection fault 489GPG GNU Privacy Guard 490GPL [GNU] General Public License 491GPR general purpose register 492GPS generalized processor sharing 493GPT GUID partition table 494GPU graphics processing unit 495GR golden ratio 496GRE generic routing encapsulation 497GSI global system interrupt 498GUI graphical user interface 499GUID globally unique identifier 500HA high availability 501HAL hardware abstraction layer 502HAT hashed array tree 503HBA host bus adapter 504HCF halt and catch fire 505HCI host controller interface 506HCI human-computer interaction 507HCL hardware compatibility list 508HDCP High-bandwidth Digital Content Protection 509HDD hard disk drive 510HDL hardware description language 511HDMI High-Definition Multimedia Interface 512HDTV high-definition television 513HF high frequency 514HFM highest frequency mode 515HID human interface device 516HLL high-level language 517HMA high memory area 518HMI human-machine interface 519HOOD hierarchical object oriented design 520HP Hewlett-Packard 521HPC high performance computing 522HPET high precision event timer 523HT hyper-threading 524HTC hardware thermal control 525HTCC high temperature co-fired ceramic 526HTML HyperText Markup Language 527HTT hyper-threading technology 528HTTP Hypertext Transfer Protocol 529HTTPS Hypertext Transfer Protocol Secure 530HVM hardware virtual machine 531HZ Hertz 532I2O intelligent input/output 533IA information assurance 534IANA Internet Assigned Numbers Authority 535IBC iterated block cipher 536IBM International Business Machines 537IBS instruction based sampling 538IBSS independent basic service set 539IC integrated circuit 540ICA independent computer architecture 541ICB Internet Citizen's Band 542ICE in-circuit emulator 543ICE internal compiler error 544ICH I/O controller hub 545ICMP Internet Control Message Protocol 546ICT information and communications technology 547ICW initialization command word 548IDA Intel dynamic acceleration 549IDCMP Intuition direct communication message port 550IDE integrated development environment 551IDE integrated drive electronics 552IDPS intrusion detection [and] prevention system 553IDRP inter-domain routing protocol 554IDS intrusion detection system 555IDT interrupt descriptor table 556IE Internet Explorer 557IEC International Electrotechnical Commission 558IEEE Institute of Electrical and Electronics Engineers 559IESG Internet Engineering Steering Group 560IETF Internet Engineering Task Force 561IF intermediate frequency 562IFCM isochronous flow control mode 563IFF Interchange File Format 564IGD Internet gateway device 565IGMP Internet Group Management Protocol 566IGP interior gateway protocol 567IHV independent hardware vendor 568IKE Internet key exchange 569ILM internal loopback mode 570ILOM integrated lights-out management 571ILP instruction level parallelism 572IM instant messaging 573IMAP Internet Message Access Protocol 574IMC integrated memory controller 575IMCR interrupt mode configuration register 576IMR interrupt mask register 577IMS information management system 578INCITS InterNational Committee for Information Technology Standards 579IO input/output 580IOCTL input/output control 581IOMMU input/output memory management unit 582IOT Internet of Things 583IP Internet Protocol 584IP intellectual property 585IPC interprocess communication 586IPE integrated programming environment 587IPI interprocessor interrupt 588IPNG Internet Protocol, Next Generation 589IPS in-plane switching 590IPS intrusion prevention system 591IPSEC Internet Protocol Security 592IRC Internet Relay Chat 593IRDA infrared data association 594IRQ interrupt request 595IRQL interrupt request level 596IRR interrupt request register 597IRTF Internet Research Task Force 598IS information system 599ISA industry standard architecture 600ISA instruction set architecture 601ISDN integrated services digital network 602ISI inter-symbol interference 603ISM industrial, scientific, [and] medical 604ISN initial serial number 605ISO International Standards Organization 606ISOC Internet Society 607ISP Internet service provider 608ISR in-service register 609ISR interrupt service routine 610IST interrupt stack table 611ISV independent software vendor 612IT information technology 613ITB Intel Turbo Boost 614IV initialization vector 615IVT interrupt vector table 616JBOD just a bunch of disks 617JFET junction [gate] field-effect transistor 618JIT just in time 619JPEG Joint Photographic Experts Group 620JRE Java Runtime Environment 621JTAG joint test action group 622KB keyboard 623KB kilobyte 624KBD keyboard 625KBD kilobaud 626KLOC thousand lines of code 627KMS kernel-mode setting 628KPI kernel programming interface 629KVA kernel virtual address 630KVM kernel virtual machine 631KVM kernel virtual memory 632KVM keyboard, video, [and] mouse 633LAMP Linux Apache MySQL {Perl,PHP,Python} 634LAN local area network 635LAPIC local advanced programmable interrupt controller 636LAR load access rights 637LBA logical block addressing 638LBS location-based service 639LCD liquid crystal display 640LCP link control protocol 641LDA local delivery agent 642LDAP Lightweight Directory Access Protocol 643LDR light-dependent resistor 644LDT local descriptor table 645LE logical extent 646LED light emitting diode 647LER label edge router 648LF line feed 649LF low frequency 650LFM lowest frequency mode 651LFN long file names 652LFO low-frequency oscillation 653LFS log-structured file system 654LFU least frequently used 655LHP loop heat pipe 656LIFO last in, first out 657LILO LInux LOader 658LILO last in, last out 659LINT local interrupt 660LIR local Internet registry 661LKM {Linux,loadable} kernel module 662LKML Linux kernel mailing list 663LL load linked 664LL/SC load linked/store conditional 665LLC logical link control 666LLDP link layer discovery protocol 667LLF low level format 668LLMNR link-local multicast name resolution 669LLVM Low Level Virtual Machine 670LM long mode 671LMM link management mode 672LNO loop nest optimization 673LOC lines of code 674LOM lights-out management 675LPC low pin count 676LPS local positioning system 677LRC longitudinal redundancy check 678LRM left-to-right mark 679LRO left-to-right override 680LRU least recently used 681LSB Linux standards base 682LSB least significant {bit,byte} 683LSI large scale integration 684LSL load segment limit 685LSN Large Scale NAT 686LSN log sequence number 687LSR label switch router 688LTCC low temperature co-fired ceramic 689LTO link time optimization 690LTR left to right 691LTR load task register 692LTR letter(-sized paper) 693LTS long term support 694LUA Lua Uppercase Accident 695LUN logical unit number 696LV logical volume 697LVM logical volume management 698LVT local vector table 699LWP light-weight process 700LZW Lempel Ziv Welch 701MAC mandatory access control 702MAC medium access control 703MAC message authentication {check,code} 704MADT multiple APIC descriptor table 705MB megabyte 706MBA multi-boot agent 707MBR master boot record 708MBS megabits per second 709MC memory controller 710MCA machine check architecture 711MCA MicroChannel architecture 712MCC multiversion concurrency control 713MCE machine check exception 714MCGA Multi-Color Graphics Array 715MCH memory controller hub 716MCM multi-chip module 717MCQ memory controlled queue 718MD machine-dependent 719MDA mail delivery agent 720MDA Monochrome Display Adapter 721MDRAM multibank dynamic random access memory 722MESI modified, exclusive, shared, invalid 723MFC merge from current 724MFC Microsoft Foundation Classes 725MFM modified frequency modulation 726MI machine-independent 727MIB management information base 728MIC message integrity {check,code} 729MID mobile Internet device 730MIDI musical instrument digital interface 731MIF management information format 732MIM man in the middle 733MIMD multiple instruction, multiple data 734MIME Multipurpose Internet Mail Extensions 735MIMO multiple input multiple output 736MIPS million instructions per second 737MISD multiple instruction, single data 738MIT Massachusetts Institute of Technology 739MITM man in the middle 740ML machine language 741ML machine learning 742ML mailing list 743ML markup language 744ML maximum likelihood 745MLC multi-level cell 746MLHP micro loop heat pipe 747MMIC monolithic microwave integrated circuit 748MMIO memory mapped input/output 749MMORPG massive multiplayer online role playing game 750MMU memory management unit 751MMX matrix math extension 752MMX multimedia extension 753MMX multiple math extension 754MO magneto-optical 755MOESI modified, owned, exclusive, shared, invalid 756MOF maximum operating frequency 757MOSFET metal-oxide-semiconductor field-effect transistor 758MOSI modified, owned, shared, invalid 759MP multi-platform 760MP multiplayer 761MP {multiprocessing,multiprocessor} 762MPEG moving picture experts group 763MPI message passing interface 764MPLS Multiprotocol Label Switching 765MPP massively parallel processor 766MPS memory pool system 767MPS multiprocessor specification 768MR modem ready 769MRU most recently used 770MS Microsoft 771MSB most significant {bit,byte} 772MSE mean square error 773MSF minutes seconds frames 774MSI message signaled interrupt 775MSI modified, shared, invalid 776MSR machine state register 777MSS maximum segment size 778MT machine translation 779MTA mail transfer agent 780MTBF mean time between failures 781MTP media transfer protocol 782MTRR memory type range register 783MTTF mean time to failure 784MTU maximum transmission unit 785MUA mail user agent 786MUD multi-user domain 787MVCC multiversion concurrency control 788MWE module width encoding 789MX mail exchange 790NACK negative acknowledgement 791NAN not a number 792NAPT Network Address Port Translation 793NAS network attached storage 794NAT network address translation 795NAV network allocation vector 796NC numerical control 797NCO numerically-controlled oscillator 798NCP Network Control Protocol 799NCQ native command queuing 800ND neighbor discovery 801NDFA nondeterministic finite automaton 802NE numeric error 803NFA nondeterministic finite automaton 804NFC near-field communication 805NFS network file system 806NIA next instruction address 807NIC network information center 808NIC network interface card 809NIDS network intrusion detection system 810NIP network interface protocol 811NIPS network intrusion prevention system 812NIS network information service 813NLS native language support 814NMI non-maskable interrupt 815NNTP Network News Transfer Protocol 816NOC network operations center 817NOP no operation 818NOS network operating system 819NP nondeterministic polynomial time 820NRZ non-return to zero 821NSA National Security Agency 822NTM non-deterministic Turing machine 823NTP Network Time Protocol 824NUMA non-uniform memory access 825NVRAM non-volatile random access memory 826NW not write-through 827NX no execute 828OAEP optimal asymmetric encryption padding 829OBO off by one 830OBOE off by one error 831OCL object constraint language 832OCR optical character recognition 833ODCM on-demand clock modulation 834ODT on-die termination 835OEM original equipment manufacturer 836OFDM orthogonal frequency division multiplexing 837OFET organic field-effect transistor 838OLAP online analytical processing 839OLE object linking and embedding 840OLTP online transaction processing 841ONFI open nand flash interface 842OO OpenOffice 843OO object oriented 844OOB out of band 845OOE out of order execution 846OOM out of memory 847OOO OpenOffice.org 848OOP object oriented programming 849OOPS object oriented programming systems 850OOSE object oriented software engineering 851OPM operations per minute 852OPS operations per second 853OQL Object Query Language 854ORB object request broker 855ORM object-relational mapping 856OS operating system 857OSD open source definition 858OSF open software foundation 859OSI Open Source Initiative 860OSI open systems interconnection 861OSPF open shortest path first 862OSPM OS power management 863OSS open sound system 864OSS open source software 865OSVW operating system visible workarounds 866OTP one time password 867OTP open telecom platform 868OU organizational unit 869OUI organizationally unique identifier 870OWL Web Ontology Language 871P2P PCI to PCI 872P2P peer to peer 873PA phase accumulator 874PA physical address 875PAC phase-amplitude converter 876PAE physical address extension 877PAL phase alternating line 878PAL programmable array logic 879PAM pluggable authentication modules 880PAM pulse amplitude modulation 881PAP password authentication protocol 882PAT page attribute table 883PAT port address translation 884PATA parallel ATA 885PAX portable archive exchange 886PBE pending break encoding 887PBE programming by example 888PC personal computer 889PC program counter 890PCB printed circuit board 891PCC Portable C Compiler 892PCD page-level cache disable 893PCE performance-monitor counter enable 894PCI peripheral component interconnect 895PCM phase change memory 896PCM pulse code modulation 897PCMCIA Personal Computer Memory Card International Association 898PCP Port Control Protocol 899PD public domain 900PDA personal digital assistant 901PDA pushdown automaton 902PDAG propositional directed acyclic graph 903PDB power distribution board 904PDF portable document format 905PDM pulse-duration modulation 906PDN pull-down network 907PDP page {descriptor,directory} page 908PDS product data sheet 909PDU protocol data unit 910PE protection enable 911PECI platform environment control interface 912PEP protocol extension protocol 913PER packed encoding rules 914PFS perfect forward secrecy 915PGAS partitioned global address space 916PGE page global enable 917PGP Pretty Good Privacy 918PHB PCI host bridge 919PHP PHP: Hypertext Preprocessor 920PIC position independent code 921PIC programmable interrupt controller 922PICNIC problem in chair, not in computer 923PID process id 924PIE position independent executable 925PIM personal information manager 926PIM platform-independent model 927PIO programmed input/output 928PIPT physically indexed, physically tagged 929PIQ prefetch input queue 930PIT programmable interrupt timer 931PIV personal identity verification 932PKCS public-key cryptography standards 933PKI public key infrastructure 934PLC programmable logic controller 935PLD programmable logic device 936PLL phase locked loop 937PLRU pseudo LRU 938PLTM package level thermal management 939PM power management 940PM {phase,pulse} modulation 941PME power management event 942PMI platform management interrupt 943PMIO port-mapped input/output 944PMT photo-multiplier tube 945PMU power management unit 946PNG portable network graphics 947PNP plug and play 948POE power over ethernet 949POF probability of failure 950POP Post Office Protocol 951POP power on password 952POSIX Portable Operating System Interface [for Unix] 953POST power on self test 954POTS plain old telephone system 955PP pair programming 956PPB PCI [to] PCI bridge 957PPC PowerPC 958PPI pixels per inch 959PPM pages per minute 960PPP Point-to-Point Protocol 961PPPOA Point-to-Point Protocol over ATM 962PPPOE Point-to-Point Protocol over Ethernet 963PPU physics processing unit 964PRBS pseudo-random bit sequence 965PRML partial response, maximum likelihood 966PRN pseudo random {noise,number} 967PRNG pseudo random number generator 968PROM programmable read only memory 969PSD power spectral density 970PSE page size extensions 971PSK phase shift keying 972PSK pre-shared key 973PSTN public switched telephone network 974PSW program status word 975PTE page table entry 976PTLA pseudo top level aggregator 977PTP page table page 978PTV perceived target value 979PU processing unit 980PUN physical unit number 981PV physical volume 982PVG physical volume group 983PVI protected-mode virtual interrupt 984PWM pulse width modulation 985PXE preboot execution environment 986QA quality assurance 987QAM quadrature amplitude modulation 988QAM quality assurance management 989QBE query by example 990QC quality control 991QDI quasi delay insensitive 992QOS quality of service 993R/O read only 994R/W read/write 995RA receiver address 996RA remote assistance 997RA resource affinity 998RA router advertisement 999RAD rapid application development 1000RAID redundant array of {independent,inexpensive} disks 1001RAM random access memory 1002RAS reliability, availability and serviceability 1003RAS remote access service 1004RAS restartable atomic sequence 1005RAS row address strobe 1006RBF radial basis function 1007RBT red-black tree 1008RC release candidate 1009RC remote control 1010RCS Revision Control System 1011RCS revision control system 1012RCU read, copy, update 1013RDB Rigid Disk Block 1014RDBMS relational database management system 1015RDF Resource Description Framework 1016RDM relational data model 1017RDMA remote direct memory access 1018RE regular expression 1019REST representational state transfer 1020RF radio frequency 1021RFI radio frequency interference 1022RFO request for ownership 1023RGB red green blue 1024RGBA red green blue alpha 1025RH read hit 1026RHEL Red Hat Enterprise Linux 1027RHL Red Hat Linux 1028RIB routing information base 1029RIFF Resource Interchange File Format 1030RIP Routing Information Protocol 1031RIR regional Internet registry 1032RISC reduced instruction set {computer,computing} 1033RKM ROM Kernel Manual 1034RLE run length encoding 1035RLL run length limited 1036RLO right-to-left override 1037RM read miss 1038RMI remote method invocation 1039RMPM rapid memory power management 1040RMS root mean square 1041RMW read, modify, write 1042RNG random number generator 1043ROM read only memory 1044RPC remote procedure call 1045RPL requested privilege level 1046RPM revolutions per minute 1047RPN reverse Polish notation 1048RR random replacement 1049RR round robin 1050RS relay station 1051RSA Rivest, Shamir, [and] Adleman 1052RSIP Realm Specific IP 1053RSS really simple syndication 1054RSS residual sum of squares 1055RT real time 1056RTC real time clock 1057RTC real time computing 1058RTF rich text format 1059RTL register transfer language 1060RTL resistor-transistor logic 1061RTL right to left 1062RTOS real time operating system 1063RTS request to send 1064RTT round trip time 1065RUP rational unified process 1066RWM read-write memory 1067RX {receive,receiver} 1068S/PDIF Sony/Philips Digital Interface Format 1069SA security advisory 1070SA security association 1071SA source address 1072SA structured analysis 1073SAAS software as a service 1074SACD super audio compact disc 1075SAD security association database 1076SAL system abstraction layer 1077SAM serial access memory 1078SAM sum addressed memory 1079SAN storage area network 1080SAPIC streamlined advanced programmable interrupt controller 1081SASD structured analysis, structured design 1082SASI Shugart Associates System Interface 1083SASL simple authentication [and] security layer 1084SATA serial advanced technology attachment 1085SB sound blaster 1086SBU standard build unit 1087SC store conditional 1088SCA source code analyzer 1089SCADA supervisory control and data acquisition 1090SCC single chip cloud 1091SCC source code control 1092SCCS Source Code Control System 1093SCI scalable coherent interface 1094SCI system control interrupt 1095SCM software configuration management 1096SCM source code management 1097SCM storage-class memory 1098SCP secure copy 1099SCSI Small Computer System Interface 1100SCTP Stream Control Transmission Protocol 1101SDI symbol deinterleave 1102SDK software development kit 1103SDL Simple Declarative Language 1104SDL Simple Direct-media Layer 1105SDRAM synchronous dynamic random access memory 1106SDT syntax-directed translation 1107SEGV segmentation violation 1108SEO search engine optimization 1109SFC sequential function chart 1110SFI simple firmware interface 1111SFI software fault isolation 1112SFTP SSH File Transfer Protocol 1113SFTP Serial File Transfer Protocol 1114SFTP Simple File Transfer Protocol 1115SGRAM synchronous graphics random access memory 1116SIFS short inter-frame space 1117SIMD single instruction, multiple data 1118SIMM single inline memory module 1119SIP Session Initiation Protocol 1120SIR signal-to-interference ratio 1121SIR slow infrared 1122SISD single instruction, single data 1123SLC single-level cell 1124SLDRAM synchronous-link dynamic random access memory 1125SLED single large expensive disk 1126SLI scalable link interface 1127SLI scan-line interleave 1128SLOC source lines of code 1129SLRU segmented LRU 1130SMA smart memory access 1131SMAF system management action field 1132SMART self-monitoring analysis and reporting technology 1133SMBIOS System Management BIOS 1134SMC system management controller 1135SMI structure of management information 1136SMI system management interrupt 1137SMM system management mode 1138SMP symmetric multiprocessing 1139SMT simultaneous multithreading 1140SMTP Simple Mail Transfer Protocol 1141SMU system management unit 1142SNMP Simple Network Management Protocol 1143SNR signal-to-noise ratio 1144SOA service oriented architecture 1145SOAP Simple Object Access Protocol 1146SOC system on chip 1147SOF start of frame 1148SOH start of header 1149SOHO small office/home office 1150SOL serial over LAN 1151SP service pack 1152SP stack pointer 1153SPARC scalable processor architecture 1154SPARQL SPARQL Protocol and RDF Query Language 1155SPD security policy database 1156SPD serial presence detect 1157SPDIF Sony/Philips digital interface format 1158SPI serial peripheral interface 1159SPI stateful packet inspection 1160SPMD single process, multiple data 1161SPR special purpose register 1162SPT sectors per track 1163SQA software quality assurance 1164SQL Structured Query Language 1165SRAM static random access memory 1166SRC sample rate conversion 1167SS self-snoop 1168SS stack segment 1169SSB single-sideband modulation 1170SSD solid state drive 1171SSE streaming SIMD extensions 1172SSFDC solid state floppy disc card 1173SSH secure shell 1174SSI server side includes 1175SSID service set identifier 1176SSL secure sockets layer 1177SSP stack smashing protection 1178STC software thermal control 1179STD state transition diagram 1180STP Spanning Tree Protocol 1181STP shielded twisted pair 1182SUS Single Unix Specification 1183SUT system under test 1184SVG scalable vector graphics 1185SVGA Super Video Graphics Array 1186SVM secure virtual machine 1187SVM support vector machine 1188SVR System V Release 1189SWF Shockwave Flash 1190SWIG simplified wrapper [and] interface generator 1191SYR symbol timing recovery 1192TA test assertion 1193TA transmitter address 1194TAI international atomic time 1195TAO track at once 1196TAOCP The Art of Computer Programming 1197TAP Test Anything Protocol 1198TAS test and set 1199TB terabyte 1200TCB trace capture buffer 1201TCB trusted computing base 1202TCC thermal control circuit 1203TCL tool command language 1204TCP Transmission Control Protocol 1205TCQ tagged command queueing 1206TDC time [to] digital converter 1207TDD test driven development 1208TDD time division duplex 1209TDM time division multiplexing 1210TDMA time division multiple access 1211TDOA time difference of arrival 1212TDP thermal design {point,power} 1213TECO Text Editor and Corrector 1214TFT thin film transistor 1215TFTP Trivial File Transfer Protocol 1216TIAS try it and see 1217TIFF tagged image file format 1218TITS try it to see 1219TK temporal key 1220TKIP Temporal Key Integrity Protocol 1221TLA top level aggregator 1222TLB translation lookaside buffer 1223TLD top level domain 1224TLS thread local storage 1225TLS transport layer security 1226TM Turing machine 1227TM thermal monitor 1228TMDS transition minimized differential signaling 1229TMO timeout 1230TOD time of day 1231TOS terms of service 1232TOS trusted operating system 1233TOS type of service 1234TP transaction processing 1235TPI tracks per inch 1236TPM transactions per minute 1237TPM trusted platform module 1238TPR task priority register 1239TPS transactions per second 1240TPS transmission parameters signaling 1241TR task register 1242TR token ring 1243TRL timing recovery loop 1244TRNG true random number generator 1245TS terminal services 1246TS time series 1247TS time stamp 1248TS transport stream 1249TSC time stamp counter 1250TSD time stamp disable 1251TSL test, set, lock 1252TSO time sharing option 1253TSP Time-Stamp Protocol 1254TSP Tunnel Setup Protocol 1255TSP time synchronization protocol 1256TSP traveling salesman problem 1257TSS task state segment 1258TTL time to live 1259TTL transistor-transistor logic 1260TTM translation table maps 1261TTY teletype 1262TUI {terminal,text-based,textual} user interface 1263TX {transmit out,transmitter} 1264TZ time zone 1265UAC user {access,account} control 1266UART universal asynchronous receiver/transmitter 1267UAT user acceptance testing 1268UC uncacheable 1269UCS uniform-cost search 1270UDMA ultra DMA 1271UDO ultra density optical 1272UDP User Datagram Protocol 1273UEFI unified extensible firmware interface 1274UFS Unix File System 1275UGA universal graphics adapter 1276UI unit interval 1277UI user interface 1278UID unique identifier 1279UID user identifier 1280UL upload 1281UMA uniform memory access 1282UMA upper memory area 1283UMB upper memory block 1284UML unified modeling language 1285UMPC ultra-mobile PC 1286UPNP universal plug and play 1287UPS uninterruptible power supply 1288URI uniform resource identifier 1289URL uniform resource locator 1290URN uniform resource name 1291USART universal synchronous/asynchronous receiver/transmitter 1292USB universal serial bus 1293USWC uncacheable speculative write combining 1294UT unit test 1295UTC coordinated universal time 1296UTP unshielded twisted pair 1297UUCP Unix-to-Unix Copy Protocol 1298UUID universally unique identifier 1299UUOC useless use of cat 1300UUT unit under test 1301UX user experience 1302VA vertical alignment 1303VA virtual address 1304VA volt-ampere 1305VAX virtual address extension 1306VB Visual Basic 1307VCA variable-gain amplifier 1308VCC common collector voltage 1309VCF voltage-controlled filter 1310VCM virtual channel memory 1311VCO voltage-controlled oscillator 1312VCS version control system 1313VESA Video Electronics Standards Association 1314VFO variable-frequency oscillator 1315VG volume group 1316VGA Video Graphics Array 1317VHDCI very high density cable interconnect 1318VID voltage level identifier 1319VIPT virtually indexed, physically tagged 1320VIVT virtually indexed, virtually tagged 1321VLAN virtual local area network 1322VLIW very long instruction word 1323VLSI very large scale integration 1324VLSM variable length subnet mask 1325VM virtual {machine,memory} 1326VME virtual mode extension 1327VMX vector multimedia extensions 1328VMX virtual machine extensions 1329VOD video on demand 1330VPN virtual private network 1331VR virtual reality 1332VRAM video random access memory 1333VRM voltage regulator module 1334VRRP Virtual Router Redundancy Protocol 1335W watt 1336W3C World Wide Web Consortium 1337WAN wide area network 1338WAP Wireless Application Protocol 1339WAP wireless access point 1340WDT watchdog timer 1341WEP Wired Equivalent Privacy 1342WFI wait for interrupt 1343WFQ weighted fair queuing 1344WH write hit 1345WIFI wireless fidelity 1346WLAN wireless local area network 1347WM write miss 1348WMI Windows Management Instrumentation 1349WOL Wake-on-LAN 1350WOM Wake-on-Modem 1351WOR Wake-on-Ring 1352WORM write once read many 1353WP WordPerfect 1354WP word processor 1355WP write protect 1356WPA Wi-Fi Protected Access 1357WPA2 Wi-Fi Protected Access II 1358WPS Wi-Fi Protected Setup 1359WRAM window random access memory 1360WS web services 1361WTC write through caching 1362WWAN wireless wide area network 1363WWW world wide web 1364WYSIWYG what you see is what you get 1365XBAR crossbar 1366XDMCP X Display Manager control protocol 1367XER XML encoding rules 1368XGA Extended Graphics Array 1369XIP execute in place 1370XML Extensible Markup Language 1371XOR exclusive or 1372XP extreme programming 1373XSI X/Open System Interface 1374XSL extensible stylesheet language 1375XSS cross site scripting 1376XT extended technology 1377XUL XML user interface language 1378YACC yet another compiler compiler 1379YAWPFAPR you are welcome; please file a problem report 1380YP Yellow Pages 1381YTD year to date 1382ZBR zone bit recording 1383ZFOD zero-filled on demand 1384ZIF zero insertion force 1385ZIFS zero insertion force socket 1386ZMA zone multicast address 1387