acronyms.comp revision 1.148
1$NetBSD: acronyms.comp,v 1.148 2015/02/06 14:48:24 ginsbach 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 663LLDP link layer discovery protocol 664LLF low level format 665LLMNR link-local multicast name resolution 666LLVM Low Level Virtual Machine 667LM long mode 668LMM link management mode 669LNO loop nest optimization 670LOC lines of code 671LOM lights-out management 672LPC low pin count 673LPS local positioning system 674LRC longitudinal redundancy check 675LRM left-to-right mark 676LRO left-to-right override 677LRU least recently used 678LSB Linux standards base 679LSB least significant {bit,byte} 680LSI large scale integration 681LSL load segment limit 682LSN Large Scale NAT 683LSN log sequence number 684LSR label switch router 685LTCC low temperature co-fired ceramic 686LTR left to right 687LTR load task register 688LTR letter(-sized paper) 689LUN logical unit number 690LV logical volume 691LVM logical volume management 692LVT local vector table 693LWP light-weight process 694LZW Lempel Ziv Welch 695MAC mandatory access control 696MAC medium access control 697MAC message authentication {check,code} 698MADT multiple APIC descriptor table 699MB megabyte 700MBR master boot record 701MBS megabits per second 702MC memory controller 703MCA machine check architecture 704MCA MicroChannel architecture 705MCC multiversion concurrency control 706MCE machine check exception 707MCGA Multi-Color Graphics Array 708MCH memory controller hub 709MCM multi-chip module 710MCQ memory controlled queue 711MD machine-dependent 712MDA mail delivery agent 713MDA Monochrome Display Adapter 714MDRAM multibank dynamic random access memory 715MESI modified, exclusive, shared, invalid 716MFC merge from current 717MFC Microsoft Foundation Classes 718MFM modified frequency modulation 719MI machine-independent 720MIB management information base 721MIC message integrity {check,code} 722MID mobile Internet device 723MIDI musical instrument digital interface 724MIF management information format 725MIM man in the middle 726MIMD multiple instruction, multiple data 727MIME Multipurpose Internet Mail Extensions 728MIMO multiple input multiple output 729MIPS million instructions per second 730MISD multiple instruction, single data 731MIT Massachusetts Institute of Technology 732MITM man in the middle 733ML machine language 734ML machine learning 735ML mailing list 736ML markup language 737ML maximum likelihood 738MLC multi-level cell 739MLHP micro loop heat pipe 740MMIC monolithic microwave integrated circuit 741MMIO memory mapped input/output 742MMU memory management unit 743MMX matrix math extension 744MMX multimedia extension 745MMX multiple math extension 746MO magneto-optical 747MOESI modified, owned, exclusive, shared, invalid 748MOF maximum operating frequency 749MOSFET metal-oxide-semiconductor field-effect transistor 750MOSI modified, owned, shared, invalid 751MP multi-platform 752MP multiplayer 753MP {multiprocessing,multiprocessor} 754MPEG moving picture experts group 755MPI message passing interface 756MPLS Multiprotocol Label Switching 757MPP massively parallel processor 758MPS memory pool system 759MPS multiprocessor specification 760MR modem ready 761MRU most recently used 762MS Microsoft 763MSB most significant {bit,byte} 764MSE mean square error 765MSF minutes seconds frames 766MSI message signaled interrupt 767MSI modified, shared, invalid 768MSR machine state register 769MSS maximum segment size 770MT machine translation 771MTA mail transfer agent 772MTBF mean time between failures 773MTRR memory type range register 774MTTF mean time to failure 775MTU maximum transmission unit 776MUA mail user agent 777MUD multi-user domain 778MVCC multiversion concurrency control 779MWE module width encoding 780MX mail exchange 781NACK negative acknowledgement 782NAN not a number 783NAPT Network Address Port Translation 784NAS network attached storage 785NAT network address translation 786NAV network allocation vector 787NC numerical control 788NCO numerically-controlled oscillator 789NCP Network Control Protocol 790NCQ native command queuing 791ND neighbor discovery 792NDFA nondeterministic finite automaton 793NE numeric error 794NFA nondeterministic finite automaton 795NFS network file system 796NIA next instruction address 797NIC network information center 798NIC network interface card 799NIDS network intrusion detection system 800NIP network interface protocol 801NIPS network intrusion prevention system 802NIS network information service 803NLS native language support 804NMI non-maskable interrupt 805NNTP Network News Transfer Protocol 806NOC network operations center 807NOP no operation 808NOS network operating system 809NP nondeterministic polynomial time 810NRZ non-return to zero 811NSA National Security Agency 812NTM non-deterministic Turing machine 813NTP Network Time Protocol 814NUMA non-uniform memory access 815NVRAM non-volatile random access memory 816NW not write-through 817NX no execute 818OAEP optimal asymmetric encryption padding 819OBO off by one 820OBOE off by one error 821OCL object constraint language 822OCR optical character recognition 823ODCM on-demand clock modulation 824ODT on-die termination 825OEM original equipment manufacturer 826OFDM orthogonal frequency division multiplexing 827OFET organic field-effect transistor 828OLAP online analytical processing 829OLE object linking and embedding 830OLTP online transaction processing 831ONFI open nand flash interface 832OO OpenOffice 833OO object oriented 834OOB out of band 835OOE out of order execution 836OOM out of memory 837OOO OpenOffice.org 838OOP object oriented programming 839OOPS object oriented programming systems 840OOSE object oriented software engineering 841OPM operations per minute 842OPS operations per second 843OQL Object Query Language 844ORB object request broker 845ORM object-relational mapping 846OS operating system 847OSD open source definition 848OSF open software foundation 849OSI Open Source Initiative 850OSI open systems interconnection 851OSPF open shortest path first 852OSPM OS power management 853OSS open sound system 854OSS open source software 855OSVW operating system visible workarounds 856OTP one time password 857OTP open telecom platform 858OU organizational unit 859OUI organizationally unique identifier 860OWL Web Ontology Language 861P2P PCI to PCI 862P2P peer to peer 863PA phase accumulator 864PA physical address 865PAC phase-amplitude converter 866PAE physical address extension 867PAL phase alternating line 868PAL programmable array logic 869PAM pluggable authentication modules 870PAM pulse amplitude modulation 871PAP password authentication protocol 872PAT page attribute table 873PAT port address translation 874PATA parallel ATA 875PAX portable archive exchange 876PBE pending break encoding 877PBE programming by example 878PC personal computer 879PC program counter 880PCB printed circuit board 881PCC Portable C Compiler 882PCD page-level cache disable 883PCE performance-monitor counter enable 884PCI peripheral component interconnect 885PCM phase change memory 886PCM pulse code modulation 887PCMCIA Personal Computer Memory Card International Association 888PCP Port Control Protocol 889PD public domain 890PDA personal digital assistant 891PDA pushdown automaton 892PDAG propositional directed acyclic graph 893PDB power distribution board 894PDF portable document format 895PDM pulse-duration modulation 896PDN pull-down network 897PDP page {descriptor,directory} page 898PDS product data sheet 899PDU protocol data unit 900PE protection enable 901PECI platform environment control interface 902PEP protocol extension protocol 903PER packed encoding rules 904PFS perfect forward secrecy 905PGAS partitioned global address space 906PGE page global enable 907PGP Pretty Good Privacy 908PHB PCI host bridge 909PHP PHP: Hypertext Preprocessor 910PIC position independent code 911PIC programmable interrupt controller 912PICNIC problem in chair, not in computer 913PID process id 914PIE position independent executable 915PIM personal information manager 916PIM platform-independent model 917PIO programmed input/output 918PIPT physically indexed, physically tagged 919PIQ prefetch input queue 920PIT programmable interrupt timer 921PIV personal identity verification 922PKCS public-key cryptography standards 923PKI public key infrastructure 924PLC programmable logic controller 925PLD programmable logic device 926PLL phase locked loop 927PLRU pseudo LRU 928PLTM package level thermal management 929PM power management 930PM {phase,pulse} modulation 931PME power management event 932PMI platform management interrupt 933PMIO port-mapped input/output 934PMT photo-multiplier tube 935PMU power management unit 936PNG portable network graphics 937PNP plug and play 938POE power over ethernet 939POF probability of failure 940POP Post Office Protocol 941POP power on password 942POSIX Portable Operating System Interface [for Unix] 943POST power on self test 944POTS plain old telephone system 945PP pair programming 946PPB PCI [to] PCI bridge 947PPC PowerPC 948PPI pixels per inch 949PPM pages per minute 950PPP Point-to-Point Protocol 951PPPOA Point-to-Point Protocol over ATM 952PPPOE Point-to-Point Protocol over Ethernet 953PPU physics processing unit 954PRBS pseudo-random bit sequence 955PRML partial response, maximum likelihood 956PRN pseudo random {noise,number} 957PRNG pseudo random number generator 958PROM programmable read only memory 959PSD power spectral density 960PSE page size extensions 961PSK phase shift keying 962PSK pre-shared key 963PSTN public switched telephone network 964PSW program status word 965PTE page table entry 966PTLA pseudo top level aggregator 967PTP page table page 968PTV perceived target value 969PU processing unit 970PUN physical unit number 971PV physical volume 972PVG physical volume group 973PVI protected-mode virtual interrupt 974PWM pulse width modulation 975PXE preboot execution environment 976QA quality assurance 977QAM quadrature amplitude modulation 978QAM quality assurance management 979QBE query by example 980QC quality control 981QDI quasi delay insensitive 982QOS quality of service 983R/O read only 984R/W read/write 985RA receiver address 986RA remote assistance 987RA resource affinity 988RA router advertisement 989RAD rapid application development 990RAID redundant array of {independent,inexpensive} disks 991RAM random access memory 992RAS reliability, availability and serviceability 993RAS remote access service 994RAS restartable atomic sequence 995RAS row address strobe 996RBF radial basis function 997RBT red-black tree 998RC release candidate 999RC remote control 1000RCS Revision Control System 1001RCS revision control system 1002RCU read, copy, update 1003RDB Rigid Disk Block 1004RDBMS relational database management system 1005RDF Resource Description Framework 1006RDM relational data model 1007RDMA remote direct memory access 1008RE regular expression 1009REST representational state transfer 1010RF radio frequency 1011RFI radio frequency interference 1012RFO request for ownership 1013RGB red green blue 1014RGBA red green blue alpha 1015RH read hit 1016RHEL Red Hat Enterprise Linux 1017RHL Red Hat Linux 1018RIB routing information base 1019RIFF Resource Interchange File Format 1020RIP Routing Information Protocol 1021RIR regional Internet registry 1022RISC reduced instruction set {computer,computing} 1023RKM ROM Kernel Manual 1024RLE run length encoding 1025RLL run length limited 1026RLO right-to-left override 1027RM read miss 1028RMI remote method invocation 1029RMPM rapid memory power management 1030RMS root mean square 1031RMW read, modify, write 1032RNG random number generator 1033ROM read only memory 1034RPC remote procedure call 1035RPL requested privilege level 1036RPM revolutions per minute 1037RPN reverse Polish notation 1038RR random replacement 1039RR round robin 1040RS relay station 1041RSA Rivest, Shamir, [and] Adleman 1042RSIP Realm Specific IP 1043RSS really simple syndication 1044RSS residual sum of squares 1045RT real time 1046RTC real time clock 1047RTC real time computing 1048RTF rich text format 1049RTL register transfer language 1050RTL resistor-transistor logic 1051RTL right to left 1052RTOS real time operating system 1053RTS request to send 1054RTT round trip time 1055RUP rational unified process 1056RWM read-write memory 1057RX {receive,receiver} 1058S/PDIF Sony/Philips Digital Interface Format 1059SA security advisory 1060SA security association 1061SA source address 1062SA structured analysis 1063SAAS software as a service 1064SACD super audio compact disc 1065SAD security association database 1066SAL system abstraction layer 1067SAM serial access memory 1068SAM sum addressed memory 1069SAN storage area network 1070SAPIC streamlined advanced programmable interrupt controller 1071SASD structured analysis, structured design 1072SASI Shugart Associates System Interface 1073SASL simple authentication [and] security layer 1074SATA serial advanced technology attachment 1075SB sound blaster 1076SBU standard build unit 1077SC store conditional 1078SCA source code analyzer 1079SCADA supervisory control and data acquisition 1080SCC single chip cloud 1081SCC source code control 1082SCCS Source Code Control System 1083SCI scalable coherent interface 1084SCI system control interrupt 1085SCM software configuration management 1086SCM source code management 1087SCM storage-class memory 1088SCP secure copy 1089SCSI Small Computer System Interface 1090SCTP Stream Control Transmission Protocol 1091SDI symbol deinterleave 1092SDK software development kit 1093SDL Simple Declarative Language 1094SDL Simple Direct-media Layer 1095SDRAM synchronous dynamic random access memory 1096SDT syntax-directed translation 1097SEGV segmentation violation 1098SEO search engine optimization 1099SFC sequential function chart 1100SFI simple firmware interface 1101SFI software fault isolation 1102SFTP SSH File Transfer Protocol 1103SFTP Serial File Transfer Protocol 1104SFTP Simple File Transfer Protocol 1105SGRAM synchronous graphics random access memory 1106SIFS short inter-frame space 1107SIMD single instruction, multiple data 1108SIMM single inline memory module 1109SIP Session Initiation Protocol 1110SIR signal-to-interference ratio 1111SIR slow infrared 1112SISD single instruction, single data 1113SLC single-level cell 1114SLDRAM synchronous-link dynamic random access memory 1115SLED single large expensive disk 1116SLI scalable link interface 1117SLI scan-line interleave 1118SLOC source lines of code 1119SLRU segmented LRU 1120SMA smart memory access 1121SMAF system management action field 1122SMART self-monitoring analysis and reporting technology 1123SMBIOS System Management BIOS 1124SMC system management controller 1125SMI structure of management information 1126SMI system management interrupt 1127SMM system management mode 1128SMP symmetric multiprocessing 1129SMT simultaneous multithreading 1130SMTP Simple Mail Transfer Protocol 1131SMU system management unit 1132SNMP Simple Network Management Protocol 1133SNR signal-to-noise ratio 1134SOA service oriented architecture 1135SOAP Simple Object Access Protocol 1136SOC system on chip 1137SOF start of frame 1138SOH start of header 1139SOHO small office/home office 1140SOL serial over LAN 1141SP service pack 1142SP stack pointer 1143SPARC scalable processor architecture 1144SPARQL SPARQL Protocol and RDF Query Language 1145SPD security policy database 1146SPD serial presence detect 1147SPDIF Sony/Philips digital interface format 1148SPI serial peripheral interface 1149SPI stateful packet inspection 1150SPMD single process, multiple data 1151SPR special purpose register 1152SPT sectors per track 1153SQA software quality assurance 1154SQL Structured Query Language 1155SRAM static random access memory 1156SRC sample rate conversion 1157SS self-snoop 1158SS stack segment 1159SSB single-sideband modulation 1160SSD solid state drive 1161SSE streaming SIMD extensions 1162SSFDC solid state floppy disc card 1163SSH secure shell 1164SSI server side includes 1165SSID service set identifier 1166SSL secure sockets layer 1167SSP stack smashing protection 1168STC software thermal control 1169STD state transition diagram 1170STP Spanning Tree Protocol 1171STP shielded twisted pair 1172SUS Single Unix Specification 1173SUT system under test 1174SVG scalable vector graphics 1175SVGA Super Video Graphics Array 1176SVM secure virtual machine 1177SVM support vector machine 1178SVR System V Release 1179SWF Shockwave Flash 1180SWIG simplified wrapper [and] interface generator 1181SYR symbol timing recovery 1182TA test assertion 1183TA transmitter address 1184TAI international atomic time 1185TAO track at once 1186TAOCP The Art of Computer Programming 1187TAP Test Anything Protocol 1188TAS test and set 1189TB terabyte 1190TCB trace capture buffer 1191TCB trusted computing base 1192TCC thermal control circuit 1193TCL tool command language 1194TCP Transmission Control Protocol 1195TCQ tagged command queueing 1196TDC time [to] digital converter 1197TDD test driven development 1198TDD time division duplex 1199TDM time division multiplexing 1200TDMA time division multiple access 1201TDOA time difference of arrival 1202TDP thermal design {point,power} 1203TECO Text Editor and Corrector 1204TFT thin film transistor 1205TFTP Trivial File Transfer Protocol 1206TIAS try it and see 1207TIFF tagged image file format 1208TITS try it to see 1209TK temporal key 1210TKIP Temporal Key Integrity Protocol 1211TLA top level aggregator 1212TLB translation lookaside buffer 1213TLD top level domain 1214TLS thread local storage 1215TLS transport layer security 1216TM Turing machine 1217TM thermal monitor 1218TMDS transition minimized differential signaling 1219TMO timeout 1220TOD time of day 1221TOS terms of service 1222TOS trusted operating system 1223TOS type of service 1224TP transaction processing 1225TPI tracks per inch 1226TPM transactions per minute 1227TPM trusted platform module 1228TPR task priority register 1229TPS transactions per second 1230TPS transmission parameters signaling 1231TR task register 1232TR token ring 1233TRL timing recovery loop 1234TRNG true random number generator 1235TS terminal services 1236TS time series 1237TS time stamp 1238TS transport stream 1239TSC time stamp counter 1240TSD time stamp disable 1241TSL test, set, lock 1242TSO time sharing option 1243TSP Time-Stamp Protocol 1244TSP Tunnel Setup Protocol 1245TSP time synchronization protocol 1246TSP traveling salesman problem 1247TSS task state segment 1248TTL time to live 1249TTL transistor-transistor logic 1250TTM translation table maps 1251TTY teletype 1252TUI {terminal,text-based,textual} user interface 1253TX {transmit out,transmitter} 1254TZ time zone 1255UAC user {access,account} control 1256UART universal asynchronous receiver/transmitter 1257UAT user acceptance testing 1258UC uncacheable 1259UCS uniform-cost search 1260UDMA ultra DMA 1261UDO ultra density optical 1262UDP User Datagram Protocol 1263UFS Unix File System 1264UI unit interval 1265UI user interface 1266UID unique identifier 1267UID user identifier 1268UL upload 1269UMA uniform memory access 1270UMA upper memory area 1271UMB upper memory block 1272UML unified modeling language 1273UMPC ultra-mobile PC 1274UPNP universal plug and play 1275UPS uninterruptible power supply 1276URI uniform resource identifier 1277URL uniform resource locator 1278URN uniform resource name 1279USART universal synchronous/asynchronous receiver/transmitter 1280USB universal serial bus 1281USWC uncacheable speculative write combining 1282UT unit test 1283UTC coordinated universal time 1284UTP unshielded twisted pair 1285UUCP Unix-to-Unix Copy Protocol 1286UUID universally unique identifier 1287UUOC useless use of cat 1288UUT unit under test 1289UX user experience 1290VA vertical alignment 1291VA virtual address 1292VA volt-ampere 1293VAX virtual address extension 1294VB Visual Basic 1295VCA variable-gain amplifier 1296VCC common collector voltage 1297VCF voltage-controlled filter 1298VCM virtual channel memory 1299VCO voltage-controlled oscillator 1300VCS version control system 1301VESA Video Electronics Standards Association 1302VFO variable-frequency oscillator 1303VG volume group 1304VGA Video Graphics Array 1305VHDCI very high density cable interconnect 1306VID voltage level identifier 1307VIPT virtually indexed, physically tagged 1308VIVT virtually indexed, virtually tagged 1309VLAN virtual local area network 1310VLIW very long instruction word 1311VLSI very large scale integration 1312VLSM variable length subnet mask 1313VM virtual {machine,memory} 1314VME virtual mode extension 1315VMX vector multimedia extensions 1316VMX virtual machine extensions 1317VOD video on demand 1318VPN virtual private network 1319VR virtual reality 1320VRAM video random access memory 1321VRM voltage regulator module 1322VRRP Virtual Router Redundancy Protocol 1323W watt 1324W3C World Wide Web Consortium 1325WAN wide area network 1326WAP Wireless Application Protocol 1327WAP wireless access point 1328WDT watchdog timer 1329WEP Wired Equivalent Privacy 1330WFI wait for interrupt 1331WFQ weighted fair queuing 1332WH write hit 1333WIFI wireless fidelity 1334WLAN wireless local area network 1335WM write miss 1336WMI Windows Management Instrumentation 1337WOL Wake-on-LAN 1338WOM Wake-on-Modem 1339WOR Wake-on-Ring 1340WORM write once read many 1341WP WordPerfect 1342WP word processor 1343WP write protect 1344WPA Wi-Fi Protected Access 1345WPA2 Wi-Fi Protected Access II 1346WPS Wi-Fi Protected Setup 1347WRAM window random access memory 1348WS web services 1349WTC write through caching 1350WWAN wireless wide area network 1351WWW world wide web 1352WYSIWYG what you see is what you get 1353XBAR crossbar 1354XDMCP X Display Manager control protocol 1355XER XML encoding rules 1356XGA Extended Graphics Array 1357XIP execute in place 1358XML Extensible Markup Language 1359XOR exclusive or 1360XP extreme programming 1361XSI X/Open System Interface 1362XSL extensible stylesheet language 1363XSS cross site scripting 1364XT extended technology 1365XUL XML user interface language 1366YACC yet another compiler compiler 1367YAWPFAPR you are welcome; please file a problem report 1368YP Yellow Pages 1369YTD year to date 1370ZBR zone bit recording 1371ZFOD zero-filled on demand 1372ZIF zero insertion force 1373ZIFS zero insertion force socket 1374ZMA zone multicast address 1375