acronyms.comp revision 1.146
1$NetBSD: acronyms.comp,v 1.146 2015/01/29 06:53:28 plunky 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 40AM access method 41AM alignment mask 42AM amplitude modulation 43AMI alternate mark inversion 44AMQP advanced message queuing protocol 45AMT active management technology 46AN Arabic number 47ANSI American National Standards Institute 48AO analog output 49AOL Alert-on-LAN 50AOS add or subtract 51AP access point 52AP application processor 53API application programming interface 54APIC advanced programmable interrupt controller 55APIPA automatic private IP addressing 56APT advanced persistent threat 57AQM active queue management 58ARAT always running APIC timer 59ARC adaptive replacement cache 60ARM Advanced RISC Machines 61ARP Address Resolution Protocol 62ARPA Advanced Research Projects Agency 63ARQ automatic repeat request 64ARR address range register 65ARU audio response unit 66AS autonomous system 67ASC advanced smart cache 68ASCII American Standard Code for Information Interchange 69ASD agile software development 70ASE advanced software environment 71ASIC application-specific integrated circuit 72ASK amplitude shif keying 73ASLR address space layout randomization 74ASN autonomous system number 75ASPM active state power management 76ASQ automated software quality 77ASR address space register 78AST abstract syntax tree 79AST asynchronous trap 80AT access time 81AT advanced technology 82ATA advanced technology attachment 83ATAPI advanced technology attachment packet interface 84ATC address translation cache 85ATM asynchronous transfer mode 86ATX advanced technology extended 87AV anti virus 88AVL Adelson-Velsky-Landis 89AVX advanced vector extensions 90BA byte align 91BAL basic assembly language 92BAR base address register 93BBS bulletin board system 94BCC blind carbon copy 95BCD binary coded decimal 96BCR byte count register 97BCS base configuration space 98BD baud 99BDD binary decision diagram 100BDI bit deinterleave 101BDUF big design up front 102BEDO burst extended data output 103BER basic encoding rules 104BER bit error {rate,ratio} 105BFD binary {file,format} descriptor 106BFKL big fscking kernel lock 107BFS breadth-first search 108BFT binary file transfer 109BGA ball grid array 110BGP Border Gateway Protocol 111BIND Berkeley Internet Name Daemon 112BIOS Basic Input/Output System 113BIOS built-in operating system 114BIST built-in self-test 115BIU bus interface unit 116BKDG BIOS and kernel developer's guide 117BLAS basic linear algebra subprograms 118BLC back light control 119BLOB binary large object 120BM bus master 121BMC baseboard management controller 122BMIC bus master interface controller 123BN boundary neutral 124BNF Backus-Naur form 125BO binary output 126BOF beginning of file 127BOM beginning of message 128BOM byte order mark 129BP base pointer 130BP boot processor 131BPB BIOS parameter block 132BPF Berkeley Packet Filter 133BPI bits per inch 134BPM business process modelling 135BPS bits per second 136BPSK binary phase shift keying 137BQS Berkeley quality software 138BRE basic regular expression 139BS backspace 140BS binary sequence 141BSA basic service area 142BSD Berkeley Software Distribution 143BSF bit scan forward 144BSOD blue screen of death 145BSP binary space partition 146BSP bootstrap processor 147BSR bit scan reverse 148BSS basic service set 149BSS block started by symbol 150BSSID basic service set identifier 151BT BitTorrent 152BT Bluetooth 153BT bit test 154BTC bit test [and] complement 155BTR bit test [and] reset 156BTS bit test [and] set 157BTS bits per second 158BW bandwidth 159BWM block-write mode 160CA certificate authority 161CAD computer-aided design 162CAM computer assisted manufacturing 163CAM conditional access module 164CAM content addressable memory 165CARP Common Address Redundancy Protocol 166CAS column address strobe 167CAS compare and swap 168CAS computer algebra system 169CASE computer aided software engineering 170CAU control access unit 171CAV constant angular velocity 172CBC cipher block chaining 173CBR constant bit rate 174CC carbon coby 175CCD charge coupled device 176CCI co-channel interferer 177CD cache disable 178CD compact disc 179CDDA compact disc digital audio 180CDMA code division multiple access 181CDRAM cache dynamic random access memory 182CER canonical encoding rules 183CF compact flash 184CFG context-free grammar 185CFG control-flow graph 186CG control gate 187CGA Color Graphics Adapter 188CGI common gateway interface 189CGN Carrier-Grade NAT 190CHAP Challenge-Handshake Authentication Protocol 191CHS cylinder/head/sector 192CI continuous integration 193CI {common,component} interface 194CIDR Classless Inter-Domain Routing 195CIFS Common Internet File System 196CIL common intermediate language 197CIR carrier-to-interference ratio 198CIS contact image sensor 199CISC complex instruction set {computer,computing} 200CJK Chinese, Japanese, [and] Korean 201CLF common log format 202CLI command line interface 203CLR common language runtime 204CLTT closed loop thermal throttling 205CLUT color look-up table 206CLV constant linear velocity 207CM configuration management 208CMA concert multithread architecture 209CMI control management interface 210CMI control method interface 211CMOS complementary metal-oxide-semiconductor 212CMP chip multi-processing 213CMS content management system 214CMYK cyan magenta yellow black 215CN {common,canonical} name 216CNC computer numerical control 217CNR carrier-to-noise ratio 218COF current operating frequency 219COFDM coded orthogonal frequency division multiplexing 220COFF common object file format 221COM component object model 222COMA cache-only memory architecture 223CORBA common object request broker architecture 224COW copy-on-write 225CP continuous pilot 226CPB core performance boost 227CPE common phase error 228CPG clock pulse generator 229CPL current privilege level 230CPLD complex programmable logic device 231CPP C preprocessor 232CPS characters per second 233CPT command pass through 234CPU central processing unit 235CR carriage return 236CRC cyclic redundancy check 237CRL carrier recovery loop 238CRLF carriage return line feed 239CRT cathode ray tube 240CS cable select 241CS chip select 242CS code segment 243CS computer science 244CSI channel state information 245CSI common system interface 246CSMA carrier sense multiple access 247CSMA/CA carrier sense multiple access with collision avoidance 248CSMA/CD carrier sense multiple access with collision detection 249CSR control [and] status registers 250CSRG Computer Systems Research Group 251CSS cascading style sheets 252CSV comma-separated values 253CTM close to metal 254CTS clear to send 255CUA common user access 256CUT coordinated universal time 257CV control voltage 258CVS Concurrent Versions System 259DA destination address 260DAA distributed application architecture 261DAB digital audio broadcasting 262DAC digital [to] analog converter 263DAC discretionary access control 264DAD duplicate address detection 265DAO disk at once 266DAP Directory Access Protocol 267DAT digital audio tape 268DAT dynamic acceleration technology 269DB database 270DBA database administrator 271DBA dynamic bandwidth allocation 272DBB data bus buffer 273DBC design by contract 274DBL dynamic buffer limiting 275DBMS database management system 276DBS database server 277DC direct current 278DCC Direct Client-to-Client 279DCC direct cable connect 280DCD data carrier detect 281DCE data control equipment 282DCE distributed computing environment 283DCOM distributed component object model 284DCOP Desktop COmmunication Protocol 285DCS data collection systems 286DCT discrete cosine transform 287DCU data cache unit 288DDC display data channel 289DDE dynamic data exchange 290DDK device driver kit 291DDL data description language 292DDR double data rate 293DDS direct digital sound 294DDWG Digital Display Working Group 295DE debugging extensions 296DE desktop environment 297DEA data encryption algorithm 298DEK data encryption key 299DEP data execution prevention 300DER distinguished encoding rules 301DES Data Encryption Standard 302DF don't fragment 303DFA deterministic finite automaton 304DFC data flow control 305DFS depth first search 306DFS distributed file system 307DFT diagnostic function test 308DFT discrete Fourier transform 309DGL data generation language 310DH Diffie-Hellman 311DHCP Dynamic Host Configuration Protocol 312DIFS distributed inter-frame space 313DIMM dual inline memory module 314DIRT design in real time 315DL diode logic 316DL discrete logarithm 317DL download 318DLE data link escape 319DLL dynamic link library 320DLP discrete logarithm problem 321DMA direct memory access 322DMI desktop management interface 323DMS document management system 324DMT discrete multitone modulation 325DNARD Digital network appliance reference design 326DND drag and drop 327DNS Domain Name System 328DOE distributed object environment 329DOF data over fibre 330DOM document object model 331DOS denial of service 332DOS disk operating system 333DP DisplayPort 334DPC deferred procedure call 335DPCM differential pulse code modulation 336DPD dead peer detection 337DPI deep packet inspection 338DPI dots per inch 339DPL descriptor privilege level 340DPS Display PostScript 341DPST display power savings technology 342DRAM dynamic random access memory 343DRI direct rendering infrastructure 344DRM digital rights management 345DRRS display refresh rate switching 346DS debug store 347DSA digital signature algorithm 348DSB double-sideband modulation 349DSDT differentiated system descriptor table 350DSL digital subscriber line 351DSL domain specific language 352DSLAM digital subscriber line access multiplexer 353DSN delivery status notification 354DSO dynamic shared object 355DSP digital signal processor 356DSSS direct sequence spread spectrum 357DTD document type definition 358DTE data terminal equipment 359DTE dumb terminal emulator 360DTL diode-transistor logic 361DTS digital thermal sensor 362DUT device under test 363DVB digital video broadcasting 364DVCS distributed version control system 365DVD digital versatile disc 366DVFS dynamic voltage and frequency scaling 367DVI device independent 368DVI Digital Visual Interface 369DVR digital video recorder 370E-XER extended XML encoding rules 371EABI embedded-application binary interface 372EAP Extensible Authentication Protocol 373EBR extended boot record 374EC elliptical curve 375ECC error correction code 376ECDL elliptical curve discrete logarithm 377ECDSA elliptical curve digital signature algorithm 378ECL emitter-coupled logic 379ECN explicit congestion notification 380ECP enhanced capability port 381ECS enhanced chip set 382ECS extended configuration space 383EDAT enhanced dynamic acceleration technology 384EDGE explicit data graph execution 385EDID extended display identification data 386EDO extended data out 387EDS electronical data sheet 388EEPROM electrically erasable programmable read only memory 389EFI extensible firmware interface 390EFL emitter follower logic 391EFM eight to fourteen modulation 392EGA Enhanced Graphics Adapter 393EGP exterior gateway protocol 394EH extension header 395EIDE enchanced IDE 396EISA extended industry standard architecture 397ELF executable and linking format 398ELS entry level system 399EMI electro-magnetic interference 400EMP electro-magnetic pulse 401EMR electro-magnetic radiation 402EOF end of file 403EOI end of interrupt 404EOL end of line 405EOT end of transmission 406EPIC explicitly parallel instruction computing 407EPP enhanced parallel port 408EPRML extended partial response, maximum likelihood 409EPROM erasable programmable read only memory 410ERD emergency recovery disk 411ERD entity relationship diagram 412ERE extended regular expression 413ESDRAM enhanced synchronous dynamic random access memory 414ESS electronic switching system 415ESS extended service set 416ESSID extended service set identifier 417EST enhanced speedstep 418ETL extract, transform, load 419EU execution unit 420EULA end user license agreement 421FAT file allocation table 422FBRAM frame buffer random access memory 423FCL fiber channel loop 424FCS frame check sequence 425FDC floppy disk controller 426FDD floppy disk drive 427FDDI fiber distributed data interface 428FDE full disk encryption 429FEA finite element analysis 430FEC forward error correction 431FET field-effect transistor 432FF form feed 433FFH functional fixed hardware 434FFI foreign function interface 435FFM focus follows mouse 436FFS Fast File System 437FFS find first set 438FFT fast Fourier transform 439FG floating gate 440FHSS frequency hop spread spectrum 441FID frequency identifier 442FIFO first in, first out 443FILO first in, last out 444FIR fast infrared 445FLOPS floating [point] operations per second 446FLOSS free/libre/open source software 447FM frequency modulation 448FMR false match rate 449FOSS free/open source software 450FPGA field programmable gate array 451FPM fast page mode 452FPR floating point register 453FPU floating point unit 454FQDN fully qualified domain name 455FRR false rejection rate 456FRU field replaceable unit 457FS file system 458FSB front side bus 459FSCK file system check 460FSF Free Software Foundation 461FSK frequency shift keying 462FSM finite-state machine 463FTA fault tree analysis 464FTL flash translation layer 465FTP File Transfer Protocol 466FTPS File Transfer Protocol Secure 467FUS fast user switching 468FWH firmware hub 469FWS folding white space 470GAL generic array logic 471GAS generic address structure 472GC garbage collector 473GCR group-coded recording 474GDT global descriptor table 475GEM graphics environment manager 476GEM graphics execution manager 477GENA general event notification architecture 478GHC Glasgow Haskell compiler 479GID group identifier 480GIF graphics interchange format 481GMCH graphics and memory controller hub 482GNU GNU's Not Unix 483GOT global offset table 484GPE general purpose event 485GPF general protection fault 486GPG GNU Privacy Guard 487GPL [GNU] General Public License 488GPR general purpose register 489GPS generalized processor sharing 490GPT GUID partition table 491GPU graphics processing unit 492GR golden ratio 493GRE generic routing encapsulation 494GSI global system interrupt 495GUI graphical user interface 496GUID globally unique identifier 497HA high availability 498HAL hardware abstraction layer 499HAT hashed array tree 500HBA host bus adapter 501HCF halt and catch fire 502HCI host controller interface 503HCI human-computer interaction 504HCL hardware compatibility list 505HDCP High-bandwidth Digital Content Protection 506HDD hard disk drive 507HDL hardware description language 508HDMI High-Definition Multimedia Interface 509HDTV high-definition television 510HF high frequency 511HFM highest frequency mode 512HID human interface device 513HLL high-level language 514HMA high memory area 515HMI human-machine interface 516HOOD hierarchical object oriented design 517HP Hewlett-Packard 518HPC high performance computing 519HPET high precision event timer 520HT hyper-threading 521HTC hardware thermal control 522HTCC high temperature co-fired ceramic 523HTML HyperText Markup Language 524HTT hyper-threading technology 525HTTP Hypertext Transfer Protocol 526HTTPS Hypertext Transfer Protocol Secure 527HVM hardware virtual machine 528HZ Hertz 529I2O intelligent input/output 530IA information assurance 531IANA Internet Assigned Numbers Authority 532IBC iterated block cipher 533IBM International Business Machines 534IBS instruction based sampling 535IBSS independent basic service set 536IC integrated circuit 537ICA independent computer architecture 538ICB Internet Citizen's Band 539ICE in-circuit emulator 540ICE internal compiler error 541ICH I/O controller hub 542ICMP Internet Control Message Protocol 543ICT information and communications technology 544ICW initialization command word 545IDA Intel dynamic acceleration 546IDCMP Intuition direct communication message port 547IDE integrated development environment 548IDE integrated drive electronics 549IDPS intrusion detection [and] prevention system 550IDRP inter-domain routing protocol 551IDS intrusion detection system 552IDT interrupt descriptor table 553IE Internet Explorer 554IEC International Electrotechnical Commission 555IEEE Institute of Electrical and Electronics Engineers 556IESG Internet Engineering Steering Group 557IETF Internet Engineering Task Force 558IF intermediate frequency 559IFCM isochronous flow control mode 560IFF Interchange File Format 561IGD Internet gateway device 562IGMP Internet Group Management Protocol 563IGP interior gateway protocol 564IHV independent hardware vendor 565IKE Internet key exchange 566ILM internal loopback mode 567ILOM integrated lights-out management 568ILP instruction level parallelism 569IM instant messaging 570IMAP Internet Message Access Protocol 571IMC integrated memory controller 572IMCR interrupt mode configuration register 573IMR interrupt mask register 574IMS information management system 575INCITS InterNational Committee for Information Technology Standards 576IO input/output 577IOCTL input/output control 578IOMMU input/output memory management unit 579IOT Internet of Things 580IP Internet Protocol 581IP intellectual property 582IPC interprocess communication 583IPE integrated programming environment 584IPI interprocessor interrupt 585IPNG Internet Protocol, Next Generation 586IPS in-plane switching 587IPS intrusion prevention system 588IPSEC Internet Protocol Security 589IRC Internet Relay Chat 590IRDA infrared data association 591IRQ interrupt request 592IRQL interrupt request level 593IRR interrupt request register 594IRTF Internet Research Task Force 595IS information system 596ISA industry standard architecture 597ISA instruction set architecture 598ISDN integrated services digital network 599ISI inter-symbol interference 600ISM industrial, scientific, [and] medical 601ISN initial serial number 602ISO International Standards Organization 603ISOC Internet Society 604ISP Internet service provider 605ISR in-service register 606ISR interrupt service routine 607IST interrupt stack table 608ISV independent software vendor 609IT information technology 610ITB Intel Turbo Boost 611IV initialization vector 612IVT interrupt vector table 613JBOD just a bunch of disks 614JFET junction [gate] field-effect transistor 615JIT just in time 616JPEG Joint Photographic Experts Group 617JRE Java Runtime Environment 618JTAG joint test action group 619KB keyboard 620KB kilobyte 621KBD keyboard 622KBD kilobaud 623KLOC thousand lines of code 624KMS kernel-mode setting 625KPI kernel programming interface 626KVA kernel virtual address 627KVM kernel virtual machine 628KVM kernel virtual memory 629KVM keyboard, video, [and] mouse 630LAMP Linux Apache MySQL {Perl,PHP,Python} 631LAN local area network 632LAPIC local advanced programmable interrupt controller 633LAR load access rights 634LBA logical block addressing 635LBS location-based service 636LCD liquid crystal display 637LCP link control protocol 638LDA local delivery agent 639LDAP Lightweight Directory Access Protocol 640LDR light-dependent resistor 641LDT local descriptor table 642LE logical extent 643LED light emitting diode 644LER label edge router 645LF line feed 646LF low frequency 647LFM lowest frequency mode 648LFN long file names 649LFO low-frequency oscillation 650LFS log-structured file system 651LFU least frequently used 652LHP loop heat pipe 653LIFO last in, first out 654LILO LInux LOader 655LILO last in, last out 656LINT local interrupt 657LIR local Internet registry 658LKM {Linux,loadable} kernel module 659LKML Linux kernel mailing list 660LL load linked 661LL/SC load linked/store conditional 662LLC logical link control 663LLF low level format 664LLMNR link-local multicast name resolution 665LLVM Low Level Virtual Machine 666LM long mode 667LMM link management mode 668LNO loop nest optimization 669LOC lines of code 670LOM lights-out management 671LPC low pin count 672LPS local positioning system 673LRC longitudinal redundancy check 674LRM left-to-right mark 675LRO left-to-right override 676LRU least recently used 677LSB Linux standards base 678LSB least significant {bit,byte} 679LSI large scale integration 680LSL load segment limit 681LSN Large Scale NAT 682LSN log sequence number 683LSR label switch router 684LTCC low temperature co-fired ceramic 685LTR left to right 686LTR load task register 687LTR letter(-sized paper) 688LUN logical unit number 689LV logical volume 690LVM logical volume management 691LVT local vector table 692LWP light-weight process 693LZW Lempel Ziv Welch 694MAC mandatory access control 695MAC medium access control 696MAC message authentication {check,code} 697MADT multiple APIC descriptor table 698MB megabyte 699MBR master boot record 700MBS megabits per second 701MC memory controller 702MCA machine check architecture 703MCA MicroChannel architecture 704MCC multiversion concurrency control 705MCE machine check exception 706MCGA Multi-Color Graphics Array 707MCH memory controller hub 708MCM multi-chip module 709MCQ memory controlled queue 710MD machine-dependent 711MDA mail delivery agent 712MDA Monochrome Display Adapter 713MDRAM multibank dynamic random access memory 714MESI modified, exclusive, shared, invalid 715MFC merge from current 716MFC Microsoft Foundation Classes 717MFM modified frequency modulation 718MI machine-independent 719MIB management information base 720MIC message integrity {check,code} 721MID mobile Internet device 722MIDI musical instrument digital interface 723MIF management information format 724MIM man in the middle 725MIMD multiple instruction, multiple data 726MIME Multipurpose Internet Mail Extensions 727MIMO multiple input multiple output 728MIPS million instructions per second 729MISD multiple instruction, single data 730MIT Massachusetts Institute of Technology 731MITM man in the middle 732ML machine language 733ML machine learning 734ML mailing list 735ML markup language 736ML maximum likelihood 737MLC multi-level cell 738MLHP micro loop heat pipe 739MMIC monolithic microwave integrated circuit 740MMIO memory mapped input/output 741MMU memory management unit 742MMX matrix math extension 743MMX multimedia extension 744MMX multiple math extension 745MO magneto-optical 746MOESI modified, owned, exclusive, shared, invalid 747MOF maximum operating frequency 748MOSFET metal-oxide-semiconductor field-effect transistor 749MOSI modified, owned, shared, invalid 750MP multi-platform 751MP multiplayer 752MP {multiprocessing,multiprocessor} 753MPEG moving picture experts group 754MPI message passing interface 755MPLS Multiprotocol Label Switching 756MPP massively parallel processor 757MPS memory pool system 758MPS multiprocessor specification 759MR modem ready 760MRU most recently used 761MS Microsoft 762MSB most significant {bit,byte} 763MSE mean square error 764MSF minutes seconds frames 765MSI message signaled interrupt 766MSI modified, shared, invalid 767MSR machine state register 768MSS maximum segment size 769MT machine translation 770MTA mail transfer agent 771MTBF mean time between failures 772MTRR memory type range register 773MTTF mean time to failure 774MTU maximum transmission unit 775MUA mail user agent 776MUD multi-user domain 777MVCC multiversion concurrency control 778MWE module width encoding 779MX mail exchange 780NACK negative acknowledgement 781NAN not a number 782NAPT Network Address Port Translation 783NAS network attached storage 784NAT network address translation 785NAV network allocation vector 786NC numerical control 787NCO numerically-controlled oscillator 788NCP Network Control Protocol 789NCQ native command queuing 790ND neighbor discovery 791NDFA nondeterministic finite automaton 792NE numeric error 793NFA nondeterministic finite automaton 794NFS network file system 795NIA next instruction address 796NIC network information center 797NIC network interface card 798NIDS network intrusion detection system 799NIP network interface protocol 800NIPS network intrusion prevention system 801NIS network information service 802NLS native language support 803NMI non-maskable interrupt 804NNTP Network News Transfer Protocol 805NOC network operations center 806NOP no operation 807NOS network operating system 808NP nondeterministic polynomial time 809NRZ non-return to zero 810NSA National Security Agency 811NTM non-deterministic Turing machine 812NTP Network Time Protocol 813NUMA non-uniform memory access 814NVRAM non-volatile random access memory 815NW not write-through 816NX no execute 817OAEP optimal asymmetric encryption padding 818OBO off by one 819OBOE off by one error 820OCL object constraint language 821OCR optical character recognition 822ODCM on-demand clock modulation 823ODT on-die termination 824OEM original equipment manufacturer 825OFDM orthogonal frequency division multiplexing 826OFET organic field-effect transistor 827OLAP online analytical processing 828OLE object linking and embedding 829OLTP online transaction processing 830ONFI open nand flash interface 831OO OpenOffice 832OO object oriented 833OOB out of band 834OOE out of order execution 835OOM out of memory 836OOO OpenOffice.org 837OOP object oriented programming 838OOPS object oriented programming systems 839OOSE object oriented software engineering 840OPM operations per minute 841OPS operations per second 842OQL Object Query Language 843ORB object request broker 844ORM object-relational mapping 845OS operating system 846OSD open source definition 847OSF open software foundation 848OSI Open Source Initiative 849OSI open systems interconnection 850OSPF open shortest path first 851OSPM OS power management 852OSS open sound system 853OSS open source software 854OSVW operating system visible workarounds 855OTP one time password 856OTP open telecom platform 857OU organizational unit 858OUI organizationally unique identifier 859OWL Web Ontology Language 860P2P PCI to PCI 861P2P peer to peer 862PA phase accumulator 863PA physical address 864PAC phase-amplitude converter 865PAE physical address extension 866PAL phase alternating line 867PAL programmable array logic 868PAM pluggable authentication modules 869PAM pulse amplitude modulation 870PAP password authentication protocol 871PAT page attribute table 872PAT port address translation 873PATA parallel ATA 874PAX portable archive exchange 875PBE pending break encoding 876PBE programming by example 877PC personal computer 878PC program counter 879PCB printed circuit board 880PCC Portable C Compiler 881PCD page-level cache disable 882PCE performance-monitor counter enable 883PCI peripheral component interconnect 884PCM phase change memory 885PCM pulse code modulation 886PCMCIA Personal Computer Memory Card International Association 887PD public domain 888PDA personal digital assistant 889PDA pushdown automaton 890PDAG propositional directed acyclic graph 891PDB power distribution board 892PDF portable document format 893PDM pulse-duration modulation 894PDN pull-down network 895PDP page {descriptor,directory} page 896PDS product data sheet 897PDU protocol data unit 898PE protection enable 899PECI platform environment control interface 900PEP protocol extension protocol 901PER packed encoding rules 902PFS perfect forward secrecy 903PGAS partitioned global address space 904PGE page global enable 905PGP Pretty Good Privacy 906PHB PCI host bridge 907PHP PHP: Hypertext Preprocessor 908PIC position independent code 909PIC programmable interrupt controller 910PICNIC problem in chair, not in computer 911PID process id 912PIE position independent executable 913PIM personal information manager 914PIM platform-independent model 915PIO programmed input/output 916PIPT physically indexed, physically tagged 917PIQ prefetch input queue 918PIT programmable interrupt timer 919PIV personal identity verification 920PKCS public-key cryptography standards 921PKI public key infrastructure 922PLC programmable logic controller 923PLD programmable logic device 924PLL phase locked loop 925PLRU pseudo LRU 926PLTM package level thermal management 927PM power management 928PM {phase,pulse} modulation 929PME power management event 930PMI platform management interrupt 931PMIO port-mapped input/output 932PMT photo-multiplier tube 933PMU power management unit 934PNG portable network graphics 935PNP plug and play 936POE power over ethernet 937POF probability of failure 938POP Post Office Protocol 939POP power on password 940POSIX Portable Operating System Interface [for Unix] 941POST power on self test 942POTS plain old telephone system 943PP pair programming 944PPB PCI [to] PCI bridge 945PPC PowerPC 946PPI pixels per inch 947PPM pages per minute 948PPP Point-to-Point Protocol 949PPPOA Point-to-Point Protocol over ATM 950PPPOE Point-to-Point Protocol over Ethernet 951PPU physics processing unit 952PRBS pseudo-random bit sequence 953PRML partial response, maximum likelihood 954PRN pseudo random {noise,number} 955PRNG pseudo random number generator 956PROM programmable read only memory 957PSD power spectral density 958PSE page size extensions 959PSK phase shift keying 960PSK pre-shared key 961PSTN public switched telephone network 962PSW program status word 963PTE page table entry 964PTLA pseudo top level aggregator 965PTP page table page 966PTV perceived target value 967PU processing unit 968PUN physical unit number 969PV physical volume 970PVG physical volume group 971PVI protected-mode virtual interrupt 972PWM pulse width modulation 973PXE preboot execution environment 974QA quality assurance 975QAM quadrature amplitude modulation 976QAM quality assurance management 977QBE query by example 978QC quality control 979QDI quasi delay insensitive 980QOS quality of service 981R/O read only 982R/W read/write 983RA receiver address 984RA remote assistance 985RA resource affinity 986RA router advertisement 987RAD rapid application development 988RAID redundant array of {independent,inexpensive} disks 989RAM random access memory 990RAS reliability, availability and serviceability 991RAS remote access service 992RAS restartable atomic sequence 993RAS row address strobe 994RBF radial basis function 995RBT red-black tree 996RC release candidate 997RC remote control 998RCS Revision Control System 999RCS revision control system 1000RCU read, copy, update 1001RDB Rigid Disk Block 1002RDBMS relational database management system 1003RDF Resource Description Framework 1004RDM relational data model 1005RDMA remote direct memory access 1006RE regular expression 1007REST representational state transfer 1008RF radio frequency 1009RFI radio frequency interference 1010RFO request for ownership 1011RGB red green blue 1012RGBA red green blue alpha 1013RH read hit 1014RHEL Red Hat Enterprise Linux 1015RHL Red Hat Linux 1016RIB routing information base 1017RIFF Resource Interchange File Format 1018RIP Routing Information Protocol 1019RIR regional Internet registry 1020RISC reduced instruction set {computer,computing} 1021RKM ROM Kernel Manual 1022RLE run length encoding 1023RLL run length limited 1024RLO right-to-left override 1025RM read miss 1026RMI remote method invocation 1027RMPM rapid memory power management 1028RMS root mean square 1029RMW read, modify, write 1030RNG random number generator 1031ROM read only memory 1032RPC remote procedure call 1033RPL requested privilege level 1034RPM revolutions per minute 1035RPN reverse Polish notation 1036RR random replacement 1037RR round robin 1038RS relay station 1039RSA Rivest, Shamir, [and] Adleman 1040RSIP Realm Specific IP 1041RSS really simple syndication 1042RSS residual sum of squares 1043RT real time 1044RTC real time clock 1045RTC real time computing 1046RTF rich text format 1047RTL register transfer language 1048RTL resistor-transistor logic 1049RTL right to left 1050RTOS real time operating system 1051RTS request to send 1052RTT round trip time 1053RUP rational unified process 1054RWM read-write memory 1055RX {receive,receiver} 1056S/PDIF Sony/Philips Digital Interface Format 1057SA security advisory 1058SA security association 1059SA source address 1060SA structured analysis 1061SAAS software as a service 1062SACD super audio compact disc 1063SAD security association database 1064SAL system abstraction layer 1065SAM serial access memory 1066SAM sum addressed memory 1067SAN storage area network 1068SAPIC streamlined advanced programmable interrupt controller 1069SASD structured analysis, structured design 1070SASI Shugart Associates System Interface 1071SASL simple authentication [and] security layer 1072SATA serial advanced technology attachment 1073SB sound blaster 1074SBU standard build unit 1075SC store conditional 1076SCA source code analyzer 1077SCADA supervisory control and data acquisition 1078SCC single chip cloud 1079SCC source code control 1080SCCS Source Code Control System 1081SCI scalable coherent interface 1082SCI system control interrupt 1083SCM software configuration management 1084SCM source code management 1085SCM storage-class memory 1086SCP secure copy 1087SCSI Small Computer System Interface 1088SCTP Stream Control Transmission Protocol 1089SDI symbol deinterleave 1090SDK software development kit 1091SDL Simple Declarative Language 1092SDL Simple Direct-media Layer 1093SDRAM synchronous dynamic random access memory 1094SDT syntax-directed translation 1095SEGV segmentation violation 1096SEO search engine optimization 1097SFC sequential function chart 1098SFI simple firmware interface 1099SFI software fault isolation 1100SFTP SSH File Transfer Protocol 1101SFTP Serial File Transfer Protocol 1102SFTP Simple File Transfer Protocol 1103SGRAM synchronous graphics random access memory 1104SIFS short inter-frame space 1105SIMD single instruction, multiple data 1106SIMM single inline memory module 1107SIP Session Initiation Protocol 1108SIR signal-to-interference ratio 1109SIR slow infrared 1110SISD single instruction, single data 1111SLC single-level cell 1112SLDRAM synchronous-link dynamic random access memory 1113SLED single large expensive disk 1114SLI scalable link interface 1115SLI scan-line interleave 1116SLOC source lines of code 1117SLRU segmented LRU 1118SMA smart memory access 1119SMAF system management action field 1120SMART self-monitoring analysis and reporting technology 1121SMBIOS System Management BIOS 1122SMC system management controller 1123SMI structure of management information 1124SMI system management interrupt 1125SMM system management mode 1126SMP symmetric multiprocessing 1127SMT simultaneous multithreading 1128SMTP Simple Mail Transfer Protocol 1129SMU system management unit 1130SNMP Simple Network Management Protocol 1131SNR signal-to-noise ratio 1132SOA service oriented architecture 1133SOAP Simple Object Access Protocol 1134SOC system on chip 1135SOF start of frame 1136SOH start of header 1137SOHO small office/home office 1138SOL serial over LAN 1139SP service pack 1140SP stack pointer 1141SPARC scalable processor architecture 1142SPARQL SPARQL Protocol and RDF Query Language 1143SPD security policy database 1144SPD serial presence detect 1145SPDIF Sony/Philips digital interface format 1146SPI serial peripheral interface 1147SPI stateful packet inspection 1148SPMD single process, multiple data 1149SPR special purpose register 1150SPT sectors per track 1151SQA software quality assurance 1152SQL Structured Query Language 1153SRAM static random access memory 1154SRC sample rate conversion 1155SS self-snoop 1156SS stack segment 1157SSB single-sideband modulation 1158SSD solid state drive 1159SSE streaming SIMD extensions 1160SSFDC solid state floppy disc card 1161SSH secure shell 1162SSI server side includes 1163SSID service set identifier 1164SSL secure sockets layer 1165SSP stack smashing protection 1166STC software thermal control 1167STD state transition diagram 1168STP Spanning Tree Protocol 1169STP shielded twisted pair 1170SUS Single Unix Specification 1171SUT system under test 1172SVG scalable vector graphics 1173SVGA Super Video Graphics Array 1174SVM secure virtual machine 1175SVM support vector machine 1176SVR System V Release 1177SWF Shockwave Flash 1178SWIG simplified wrapper [and] interface generator 1179SYR symbol timing recovery 1180TA test assertion 1181TA transmitter address 1182TAI international atomic time 1183TAO track at once 1184TAOCP The Art of Computer Programming 1185TAP Test Anything Protocol 1186TAS test and set 1187TB terabyte 1188TCB trace capture buffer 1189TCB trusted computing base 1190TCC thermal control circuit 1191TCL tool command language 1192TCP Transmission Control Protocol 1193TCQ tagged command queueing 1194TDC time [to] digital converter 1195TDD test driven development 1196TDD time division duplex 1197TDM time division multiplexing 1198TDMA time division multiple access 1199TDOA time difference of arrival 1200TDP thermal design {point,power} 1201TECO Text Editor and Corrector 1202TFT thin film transistor 1203TFTP Trivial File Transfer Protocol 1204TIAS try it and see 1205TIFF tagged image file format 1206TITS try it to see 1207TK temporal key 1208TKIP Temporal Key Integrity Protocol 1209TLA top level aggregator 1210TLB translation lookaside buffer 1211TLD top level domain 1212TLS thread local storage 1213TLS transport layer security 1214TM Turing machine 1215TM thermal monitor 1216TMDS transition minimized differential signaling 1217TMO timeout 1218TOD time of day 1219TOS terms of service 1220TOS trusted operating system 1221TOS type of service 1222TP transaction processing 1223TPI tracks per inch 1224TPM transactions per minute 1225TPM trusted platform module 1226TPR task priority register 1227TPS transactions per second 1228TPS transmission parameters signaling 1229TR task register 1230TR token ring 1231TRL timing recovery loop 1232TRNG true random number generator 1233TS terminal services 1234TS time series 1235TS time stamp 1236TS transport stream 1237TSC time stamp counter 1238TSD time stamp disable 1239TSL test, set, lock 1240TSO time sharing option 1241TSP Time-Stamp Protocol 1242TSP Tunnel Setup Protocol 1243TSP time synchronization protocol 1244TSP traveling salesman problem 1245TSS task state segment 1246TTL time to live 1247TTL transistor-transistor logic 1248TTM translation table maps 1249TTY teletype 1250TUI {terminal,text-based,textual} user interface 1251TX {transmit out,transmitter} 1252TZ time zone 1253UAC user {access,account} control 1254UART universal asynchronous receiver/transmitter 1255UAT user acceptance testing 1256UC uncacheable 1257UCS uniform-cost search 1258UDMA ultra DMA 1259UDO ultra density optical 1260UDP User Datagram Protocol 1261UFS Unix File System 1262UI unit interval 1263UI user interface 1264UID unique identifier 1265UID user identifier 1266UL upload 1267UMA uniform memory access 1268UMA upper memory area 1269UMB upper memory block 1270UML unified modeling language 1271UMPC ultra-mobile PC 1272UPNP universal plug and play 1273UPS uninterruptible power supply 1274URI uniform resource identifier 1275URL uniform resource locator 1276URN uniform resource name 1277USART universal synchronous/asynchronous receiver/transmitter 1278USB universal serial bus 1279USWC uncacheable speculative write combining 1280UT unit test 1281UTC coordinated universal time 1282UTP unshielded twisted pair 1283UUCP Unix-to-Unix Copy Protocol 1284UUID universally unique identifier 1285UUOC useless use of cat 1286UUT unit under test 1287UX user experience 1288VA vertical alignment 1289VA virtual address 1290VA volt-ampere 1291VAX virtual address extension 1292VB Visual Basic 1293VCA variable-gain amplifier 1294VCC common collector voltage 1295VCF voltage-controlled filter 1296VCM virtual channel memory 1297VCO voltage-controlled oscillator 1298VCS version control system 1299VESA Video Electronics Standards Association 1300VFO variable-frequency oscillator 1301VG volume group 1302VGA Video Graphics Array 1303VHDCI very high density cable interconnect 1304VID voltage level identifier 1305VIPT virtually indexed, physically tagged 1306VIVT virtually indexed, virtually tagged 1307VLAN virtual local area network 1308VLIW very long instruction word 1309VLSI very large scale integration 1310VLSM variable length subnet mask 1311VM virtual {machine,memory} 1312VME virtual mode extension 1313VMX vector multimedia extensions 1314VMX virtual machine extensions 1315VOD video on demand 1316VPN virtual private network 1317VR virtual reality 1318VRAM video random access memory 1319VRM voltage regulator module 1320VRRP Virtual Router Redundancy Protocol 1321W watt 1322W3C World Wide Web Consortium 1323WAN wide area network 1324WAP Wireless Application Protocol 1325WAP wireless access point 1326WDT watchdog timer 1327WEP Wired Equivalent Privacy 1328WFI wait for interrupt 1329WFQ weighted fair queuing 1330WH write hit 1331WIFI wireless fidelity 1332WLAN wireless local area network 1333WM write miss 1334WMI Windows Management Instrumentation 1335WOL Wake-on-LAN 1336WOM Wake-on-Modem 1337WOR Wake-on-Ring 1338WORM write once read many 1339WP WordPerfect 1340WP word processor 1341WP write protect 1342WPA Wi-Fi Protected Access 1343WPA2 Wi-Fi Protected Access II 1344WPS Wi-Fi Protected Setup 1345WRAM window random access memory 1346WS web services 1347WTC write through caching 1348WWAN wireless wide area network 1349WWW world wide web 1350WYSIWYG what you see is what you get 1351XBAR crossbar 1352XDMCP X Display Manager control protocol 1353XER XML encoding rules 1354XGA Extended Graphics Array 1355XIP execute in place 1356XML Extensible Markup Language 1357XOR exclusive or 1358XP extreme programming 1359XSI X/Open System Interface 1360XSL extensible stylesheet language 1361XSS cross site scripting 1362XT extended technology 1363XUL XML user interface language 1364YACC yet another compiler compiler 1365YAWPFAPR you are welcome; please file a problem report 1366YP Yellow Pages 1367YTD year to date 1368ZBR zone bit recording 1369ZFOD zero-filled on demand 1370ZIF zero insertion force 1371ZIFS zero insertion force socket 1372ZMA zone multicast address 1373