acronyms.comp revision 1.170
1$NetBSD: acronyms.comp,v 1.170 2017/01/01 22:44:30 kamil 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 46AMP asymmetric multiprocessing 47AMT active management technology 48AN Arabic number 49ANSI American National Standards Institute 50AO analog output 51AOL Alert-on-LAN 52AOS add or subtract 53AP access point 54AP application processor 55API application programming interface 56APIC advanced programmable interrupt controller 57APIPA automatic private IP addressing 58APT advanced persistent threat 59AQM active queue management 60ARAT always running APIC timer 61ARC adaptive replacement cache 62ARM Advanced RISC Machines 63ARP Address Resolution Protocol 64ARPA Advanced Research Projects Agency 65ARQ automatic repeat request 66ARR address range register 67ARU audio response unit 68AS autonomous system 69ASC advanced smart cache 70ASCII American Standard Code for Information Interchange 71ASD agile software development 72ASE advanced software environment 73ASIC application-specific integrated circuit 74ASK amplitude shif keying 75ASLR address space layout randomization 76ASN autonomous system number 77ASPM active state power management 78ASQ automated software quality 79ASR address space register 80AST abstract syntax tree 81AST asynchronous trap 82AT access time 83AT advanced technology 84ATA advanced technology attachment 85ATAPI advanced technology attachment packet interface 86ATC address translation cache 87ATM asynchronous transfer mode 88ATX advanced technology extended 89AV anti virus 90AVL Adelson-Velsky-Landis 91AVX advanced vector extensions 92BA byte align 93BAL basic assembly language 94BAR base address register 95BBS bulletin board system 96BCC blind carbon copy 97BCD binary coded decimal 98BCR byte count register 99BCS base configuration space 100BD baud 101BDD binary decision diagram 102BDI bit deinterleave 103BDUF big design up front 104BEDO burst extended data output 105BER basic encoding rules 106BER bit error {rate,ratio} 107BFD binary {file,format} descriptor 108BFKL big fscking kernel lock 109BFS breadth-first search 110BFT binary file transfer 111BGA ball grid array 112BGP Border Gateway Protocol 113BGPSEC BGP Security 114BIND Berkeley Internet Name Daemon 115BIOS Basic Input/Output System 116BIOS built-in operating system 117BIST built-in self-test 118BIU bus interface unit 119BKDG BIOS and kernel developer's guide 120BLAS basic linear algebra subprograms 121BLC back light control 122BLOB binary large object 123BM bus master 124BMC baseboard management controller 125BMIC bus master interface controller 126BN boundary neutral 127BNF Backus-Naur form 128BO binary output 129BOF beginning of file 130BOM beginning of message 131BOM byte order mark 132BP base pointer 133BP boot processor 134BPB BIOS parameter block 135BPDU bridge protocol data unit 136BPF Berkeley Packet Filter 137BPI bits per inch 138BPM business process modelling 139BPS bits per second 140BPSK binary phase shift keying 141BQS Berkeley quality software 142BRE basic regular expression 143BS backspace 144BS binary sequence 145BSA basic service area 146BSD Berkeley Software Distribution 147BSF bit scan forward 148BSOD blue screen of death 149BSP binary space partition 150BSP bootstrap processor 151BSR bit scan reverse 152BSS basic service set 153BSS block started by symbol 154BSSID basic service set identifier 155BT BitTorrent 156BT Bluetooth 157BT bit test 158BTC bit test [and] complement 159BTR bit test [and] reset 160BTS bit test [and] set 161BTS bug tracking system 162BW bandwidth 163BWM block-write mode 164CA certificate authority 165CAD computer-aided design 166CAM computer assisted manufacturing 167CAM conditional access module 168CAM content addressable memory 169CARP Common Address Redundancy Protocol 170CAS column address strobe 171CAS compare and swap 172CAS computer algebra system 173CASE computer aided software engineering 174CAU control access unit 175CAV constant angular velocity 176CBC cipher block chaining 177CBR constant bit rate 178CC carbon coby 179CCD charge coupled device 180CCI co-channel interferer 181CD cache disable 182CD compact disc 183CDDA compact disc digital audio 184CDMA code division multiple access 185CDP Cisco Discovery Protocol 186CDRAM cache dynamic random access memory 187CER canonical encoding rules 188CF compact flash 189CFG context-free grammar 190CFG control-flow graph 191CG control gate 192CGA Color Graphics Adapter 193CGI common gateway interface 194CGN Carrier-Grade NAT 195CHAP Challenge-Handshake Authentication Protocol 196CHS cylinder/head/sector 197CI continuous integration 198CI {common,component} interface 199CIDR Classless Inter-Domain Routing 200CIFS Common Internet File System 201CIL common intermediate language 202CIR carrier-to-interference ratio 203CIS contact image sensor 204CISC complex instruction set {computer,computing} 205CJK Chinese, Japanese, [and] Korean 206CLF common log format 207CLI command line interface 208CLR common language runtime 209CLTT closed loop thermal throttling 210CLUT color look-up table 211CLV constant linear velocity 212CM configuration management 213CMA concert multithread architecture 214CMI control management interface 215CMI control method interface 216CMOS complementary metal-oxide-semiconductor 217CMP chip multi-processing 218CMS content management system 219CMYK cyan magenta yellow black 220CN {common,canonical} name 221CNC computer numerical control 222CNR carrier-to-noise ratio 223COF current operating frequency 224COFDM coded orthogonal frequency division multiplexing 225COFF common object file format 226COM component object model 227COMA cache-only memory architecture 228CORBA common object request broker architecture 229COW copy-on-write 230CP continuous pilot 231CPB core performance boost 232CPE common phase error 233CPG clock pulse generator 234CPL current privilege level 235CPLD complex programmable logic device 236CPP C preprocessor 237CPS characters per second 238CPT command pass through 239CPU central processing unit 240CR carriage return 241CRC cyclic redundancy check 242CRL carrier recovery loop 243CRLF carriage return line feed 244CRT cathode ray tube 245CS cable select 246CS chip select 247CS code segment 248CS computer science 249CSI channel state information 250CSI common system interface 251CSMA carrier sense multiple access 252CSMA/CA carrier sense multiple access with collision avoidance 253CSMA/CD carrier sense multiple access with collision detection 254CSR control [and] status registers 255CSRG Computer Systems Research Group 256CSS cascading style sheets 257CSV comma-separated values 258CTM close to metal 259CTS clear to send 260CUA common user access 261CUT coordinated universal time 262CV control voltage 263CVS Concurrent Versions System 264DA destination address 265DAA distributed application architecture 266DAB digital audio broadcasting 267DAC digital [to] analog converter 268DAC discretionary access control 269DAD duplicate address detection 270DANE DNS-based Authentication of Named Entities 271DAO disk at once 272DAP Directory Access Protocol 273DAT digital audio tape 274DAT dynamic acceleration technology 275DB database 276DBA database administrator 277DBA dynamic bandwidth allocation 278DBB data bus buffer 279DBC design by contract 280DBL dynamic buffer limiting 281DBMS database management system 282DBS database server 283DC direct current 284DCC Direct Client-to-Client 285DCC direct cable connect 286DCD data carrier detect 287DCE data control equipment 288DCE distributed computing environment 289DCOM distributed component object model 290DCOP Desktop COmmunication Protocol 291DCS data collection systems 292DCT discrete cosine transform 293DCU data cache unit 294DDC display data channel 295DDE dynamic data exchange 296DDK device driver kit 297DDL data description language 298DDR double data rate 299DDS direct digital sound 300DDWG Digital Display Working Group 301DE debugging extensions 302DE desktop environment 303DEA data encryption algorithm 304DEK data encryption key 305DEP data execution prevention 306DER distinguished encoding rules 307DES Data Encryption Standard 308DF don't fragment 309DFA deterministic finite automaton 310DFC data flow control 311DFS depth first search 312DFS distributed file system 313DFT diagnostic function test 314DFT discrete Fourier transform 315DGL data generation language 316DH Diffie-Hellman 317DHCP Dynamic Host Configuration Protocol 318DIFS distributed inter-frame space 319DIMM dual inline memory module 320DIRT design in real time 321DL diode logic 322DL discrete logarithm 323DL download 324DLE data link escape 325DLL dynamic link library 326DLP discrete logarithm problem 327DMA direct memory access 328DMI desktop management interface 329DMS document management system 330DMT discrete multitone modulation 331DNARD Digital network appliance reference design 332DND drag and drop 333DNS Domain Name System 334DNSSEC DNS Security Extensions 335DOE distributed object environment 336DOF data over fibre 337DOM document object model 338DOS denial of service 339DOS disk operating system 340DP DisplayPort 341DPC deferred procedure call 342DPCM differential pulse code modulation 343DPD dead peer detection 344DPI deep packet inspection 345DPI dots per inch 346DPL descriptor privilege level 347DPS Display PostScript 348DPST display power savings technology 349DRAM dynamic random access memory 350DRI direct rendering infrastructure 351DRM digital rights management 352DRRS display refresh rate switching 353DS debug store 354DSA digital signature algorithm 355DSAP destination service access point 356DSB double-sideband modulation 357DSDT differentiated system descriptor table 358DSL digital subscriber line 359DSL domain specific language 360DSLAM digital subscriber line access multiplexer 361DSN delivery status notification 362DSO dynamic shared object 363DSP digital signal processor 364DSSS direct sequence spread spectrum 365DTD document type definition 366DTE data terminal equipment 367DTE dumb terminal emulator 368DTL diode-transistor logic 369DTLS datagram transport layer security 370DTS digital thermal sensor 371DUT device under test 372DVB digital video broadcasting 373DVCS distributed version control system 374DVD digital versatile disc 375DVFS dynamic voltage and frequency scaling 376DVI device independent 377DVI Digital Visual Interface 378DVR digital video recorder 379E-XER extended XML encoding rules 380EABI embedded-application binary interface 381EAI Email Address Internationalization 382EAI Enterprise Application Integration 383EAP Extensible Authentication Protocol 384EAPOL EAP over Lan 385EBCDIC Extended Binary Coded Decimal Interchange Code 386EBR extended boot record 387EC elliptical curve 388ECC error correction code 389ECDL elliptical curve discrete logarithm 390ECDSA elliptical curve digital signature algorithm 391ECL emitter-coupled logic 392ECN explicit congestion notification 393ECP enhanced capability port 394ECS enhanced chip set 395ECS extended configuration space 396EDAT enhanced dynamic acceleration technology 397EDGE explicit data graph execution 398EDID extended display identification data 399EDO extended data out 400EDS electronical data sheet 401EEPROM electrically erasable programmable read only memory 402EFI extensible firmware interface 403EFL emitter follower logic 404EFM eight to fourteen modulation 405EGA Enhanced Graphics Adapter 406EGP exterior gateway protocol 407EH extension header 408EIDE enhanced IDE 409EISA extended industry standard architecture 410ELF executable and linking format 411ELS entry level system 412EMI electro-magnetic interference 413EMP electro-magnetic pulse 414EMR electro-magnetic radiation 415EOF end of file 416EOI end of interrupt 417EOL end of line 418EOT end of transmission 419EPIC explicitly parallel instruction computing 420EPP enhanced parallel port 421EPRML extended partial response, maximum likelihood 422EPROM erasable programmable read only memory 423ERD emergency recovery disk 424ERD entity relationship diagram 425ERE extended regular expression 426ESDRAM enhanced synchronous dynamic random access memory 427ESS electronic switching system 428ESS extended service set 429ESSID extended service set identifier 430EST enhanced speedstep 431ETL extract, transform, load 432EU execution unit 433EULA end user license agreement 434FAT file allocation table 435FBRAM frame buffer random access memory 436FCL fiber channel loop 437FCS frame check sequence 438FDC floppy disk controller 439FDD floppy disk drive 440FDDI fiber distributed data interface 441FDE full disk encryption 442FEA finite element analysis 443FEC forward error correction 444FET field-effect transistor 445FF form feed 446FFH functional fixed hardware 447FFI foreign function interface 448FFM focus follows mouse 449FFS Fast File System 450FFS find first set 451FFT fast Fourier transform 452FG floating gate 453FHSS frequency hop spread spectrum 454FID frequency identifier 455FIFO first in, first out 456FILO first in, last out 457FIR fast infrared 458FLOPS floating [point] operations per second 459FLOSS free/libre/open source software 460FM frequency modulation 461FMR false match rate 462FOSS free/open source software 463FPGA field programmable gate array 464FPM fast page mode 465FPR floating point register 466FPU floating point unit 467FQDN fully qualified domain name 468FRR false rejection rate 469FRU field replaceable unit 470FS file system 471FSB front side bus 472FSCK file system check 473FSF Free Software Foundation 474FSK frequency shift keying 475FSM finite-state machine 476FTA fault tree analysis 477FTL flash translation layer 478FTP File Transfer Protocol 479FTPS File Transfer Protocol Secure 480FUS fast user switching 481FWH firmware hub 482FWS folding white space 483GAL generic array logic 484GAS generic address structure 485GC garbage collector 486GCR group-coded recording 487GDT global descriptor table 488GEM graphics environment manager 489GEM graphics execution manager 490GENA general event notification architecture 491GHC Glasgow Haskell compiler 492GID group identifier 493GIF graphics interchange format 494GMCH graphics and memory controller hub 495GNU GNU's Not Unix 496GOP graphics output protocol 497GOT global offset table 498GPE general purpose event 499GPF general protection fault 500GPG GNU Privacy Guard 501GPL [GNU] General Public License 502GPR general purpose register 503GPS generalized processor sharing 504GPT GUID partition table 505GPU graphics processing unit 506GR golden ratio 507GRE generic routing encapsulation 508GSI global system interrupt 509GUI graphical user interface 510GUID globally unique identifier 511HA high availability 512HAL hardware abstraction layer 513HAT hashed array tree 514HBA host bus adapter 515HCF halt and catch fire 516HCI host controller interface 517HCI human-computer interaction 518HCL hardware compatibility list 519HDCP High-bandwidth Digital Content Protection 520HDD hard disk drive 521HDL hardware description language 522HDMI High-Definition Multimedia Interface 523HDTV high-definition television 524HF high frequency 525HFM highest frequency mode 526HID human interface device 527HLL high-level language 528HMA high memory area 529HMI human-machine interface 530HOOD hierarchical object oriented design 531HP Hewlett-Packard 532HPC high performance computing 533HPET high precision event timer 534HSM hardware security module 535HSM hierarchical storage management 536HT hyper-threading 537HTC hardware thermal control 538HTCC high temperature co-fired ceramic 539HTML HyperText Markup Language 540HTT hyper-threading technology 541HTTP Hypertext Transfer Protocol 542HTTPS Hypertext Transfer Protocol Secure 543HVM hardware virtual machine 544HZ Hertz 545I2O intelligent input/output 546IA information assurance 547IANA Internet Assigned Numbers Authority 548IBC iterated block cipher 549IBM International Business Machines 550IBS instruction based sampling 551IBSS independent basic service set 552IC integrated circuit 553ICA independent computer architecture 554ICB Internet Citizen's Band 555ICE in-circuit emulator 556ICE internal compiler error 557ICH I/O controller hub 558ICMP Internet Control Message Protocol 559ICT information and communications technology 560ICW initialization command word 561IDA Intel dynamic acceleration 562IDCMP Intuition direct communication message port 563IDE integrated development environment 564IDE integrated drive electronics 565IDPS intrusion detection [and] prevention system 566IDRP inter-domain routing protocol 567IDS intrusion detection system 568IDT interrupt descriptor table 569IE Internet Explorer 570IEC International Electrotechnical Commission 571IEEE Institute of Electrical and Electronics Engineers 572IESG Internet Engineering Steering Group 573IETF Internet Engineering Task Force 574IF intermediate frequency 575IFCM isochronous flow control mode 576IFF Interchange File Format 577IGD Internet gateway device 578IGMP Internet Group Management Protocol 579IGP interior gateway protocol 580IHV independent hardware vendor 581IKE Internet key exchange 582ILM internal loopback mode 583ILOM integrated lights-out management 584ILP instruction level parallelism 585IM instant messaging 586IMAP Internet Message Access Protocol 587IMC integrated memory controller 588IMCR interrupt mode configuration register 589IMR interrupt mask register 590IMS information management system 591INCITS InterNational Committee for Information Technology Standards 592IO input/output 593IOCTL input/output control 594IOMMU input/output memory management unit 595IOT Internet of Things 596IP Internet Protocol 597IP intellectual property 598IPC interprocess communication 599IPE integrated programming environment 600IPI interprocessor interrupt 601IPNG Internet Protocol, Next Generation 602IPS in-plane switching 603IPS intrusion prevention system 604IPSEC Internet Protocol Security 605IRC Internet Relay Chat 606IRDA infrared data association 607IRQ interrupt request 608IRQL interrupt request level 609IRR interrupt request register 610IRTF Internet Research Task Force 611IS information system 612ISA industry standard architecture 613ISA instruction set architecture 614ISDN integrated services digital network 615ISI inter-symbol interference 616ISM industrial, scientific, [and] medical 617ISN initial serial number 618ISO International Standards Organization 619ISOC Internet Society 620ISP Internet service provider 621ISR in-service register 622ISR interrupt service routine 623IST interrupt stack table 624ISV independent software vendor 625IT information technology 626ITB Intel Turbo Boost 627ITIL information technology infrastructure library 628ITSM IT service management 629IV initialization vector 630IVT interrupt vector table 631JBOD just a bunch of disks 632JFET junction [gate] field-effect transistor 633JIT just in time 634JPEG Joint Photographic Experts Group 635JRE Java Runtime Environment 636JTAG joint test action group 637KB keyboard 638KB kilobyte 639KBD keyboard 640KBD kilobaud 641KLOC thousand lines of code 642KMS kernel-mode setting 643KPI kernel programming interface 644KVA kernel virtual address 645KVM kernel virtual machine 646KVM kernel virtual memory 647KVM keyboard, video, [and] mouse 648LAMP Linux Apache MySQL {Perl,PHP,Python} 649LAN local area network 650LAPIC local advanced programmable interrupt controller 651LAR load access rights 652LBA logical block addressing 653LBS location-based service 654LCD liquid crystal display 655LCP link control protocol 656LDA local delivery agent 657LDAP Lightweight Directory Access Protocol 658LDR light-dependent resistor 659LDT local descriptor table 660LE logical extent 661LED light emitting diode 662LER label edge router 663LF line feed 664LF low frequency 665LFM lowest frequency mode 666LFN long file names 667LFO low-frequency oscillation 668LFS log-structured file system 669LFU least frequently used 670LHP loop heat pipe 671LIFO last in, first out 672LILO LInux LOader 673LILO last in, last out 674LINT local interrupt 675LIR local Internet registry 676LKM {Linux,loadable} kernel module 677LKML Linux kernel mailing list 678LL load linked 679LL/SC load linked/store conditional 680LLC logical link control 681LLDP link layer discovery protocol 682LLF low level format 683LLMNR link-local multicast name resolution 684LLVM Low Level Virtual Machine 685LM long mode 686LMM link management mode 687LNO loop nest optimization 688LOC lines of code 689LOM lights-out management 690LPC low pin count 691LPS local positioning system 692LRC longitudinal redundancy check 693LRM left-to-right mark 694LRO left-to-right override 695LRU least recently used 696LSB Linux standards base 697LSB least significant {bit,byte} 698LSI large scale integration 699LSL load segment limit 700LSN Large Scale NAT 701LSN log sequence number 702LSR label switch router 703LTCC low temperature co-fired ceramic 704LTO link time optimization 705LTR left to right 706LTR load task register 707LTR letter(-sized paper) 708LTS long term support 709LUA Lua Uppercase Accident 710LUN logical unit number 711LV logical volume 712LVM logical volume management 713LVT local vector table 714LWP light-weight process 715LZW Lempel Ziv Welch 716MAC mandatory access control 717MAC medium access control 718MAC message authentication {check,code} 719MADT multiple APIC descriptor table 720MB megabyte 721MBA multi-boot agent 722MBR master boot record 723MBS megabits per second 724MC memory controller 725MCA machine check architecture 726MCA MicroChannel architecture 727MCC multiversion concurrency control 728MCE machine check exception 729MCGA Multi-Color Graphics Array 730MCH memory controller hub 731MCM multi-chip module 732MCQ memory controlled queue 733MD machine-dependent 734MDA mail delivery agent 735MDA Monochrome Display Adapter 736MDRAM multibank dynamic random access memory 737MESI modified, exclusive, shared, invalid 738MFC merge from current 739MFC Microsoft Foundation Classes 740MFM modified frequency modulation 741MI machine-independent 742MIB management information base 743MIC message integrity {check,code} 744MID mobile Internet device 745MIDI musical instrument digital interface 746MIF management information format 747MIM man in the middle 748MIMD multiple instruction, multiple data 749MIME Multipurpose Internet Mail Extensions 750MIMO multiple input multiple output 751MIPS million instructions per second 752MISD multiple instruction, single data 753MIT Massachusetts Institute of Technology 754MITM man in the middle 755ML machine language 756ML machine learning 757ML mailing list 758ML markup language 759ML maximum likelihood 760MLC multi-level cell 761MLD multicast listener discovery 762MLHP micro loop heat pipe 763MMIC monolithic microwave integrated circuit 764MMIO memory mapped input/output 765MMORPG massive multiplayer online role playing game 766MMU memory management unit 767MMX matrix math extension 768MMX multimedia extension 769MMX multiple math extension 770MO magneto-optical 771MOESI modified, owned, exclusive, shared, invalid 772MOF maximum operating frequency 773MOSFET metal-oxide-semiconductor field-effect transistor 774MOSI modified, owned, shared, invalid 775MP multi-platform 776MP multiplayer 777MP {multiprocessing,multiprocessor} 778MPEG moving picture experts group 779MPI message passing interface 780MPLS Multiprotocol Label Switching 781MPP massively parallel processor 782MPS memory pool system 783MPS multiprocessor specification 784MR modem ready 785MRU most recently used 786MS Microsoft 787MSB most significant {bit,byte} 788MSE mean square error 789MSF minutes seconds frames 790MSI message signaled interrupt 791MSI modified, shared, invalid 792MSR machine state register 793MSS maximum segment size 794MSTP Multiple Spanning Tree Protocol 795MT machine translation 796MTA mail transfer agent 797MTBF mean time between failures 798MTP media transfer protocol 799MTRR memory type range register 800MTTF mean time to failure 801MTU maximum transmission unit 802MUA mail user agent 803MUD multi-user domain 804MVCC multiversion concurrency control 805MWE module width encoding 806MX mail exchange 807NACK negative acknowledgement 808NAN not a number 809NAPT Network Address Port Translation 810NAS network attached storage 811NAT network address translation 812NAV network allocation vector 813NC numerical control 814NCO numerically-controlled oscillator 815NCP Network Control Protocol 816NCQ native command queuing 817ND neighbor discovery 818NDFA nondeterministic finite automaton 819NE numeric error 820NFA nondeterministic finite automaton 821NFC near-field communication 822NFS network file system 823NIA next instruction address 824NIC network information center 825NIC network interface card 826NIDS network intrusion detection system 827NIP network interface protocol 828NIPS network intrusion prevention system 829NIS network information service 830NLS native language support 831NMI non-maskable interrupt 832NNTP Network News Transfer Protocol 833NOC network operations center 834NOP no operation 835NOS network operating system 836NP nondeterministic polynomial time 837NRZ non-return to zero 838NSA National Security Agency 839NTM non-deterministic Turing machine 840NTP Network Time Protocol 841NUMA non-uniform memory access 842NVRAM non-volatile random access memory 843NW not write-through 844NX no execute 845OAEP optimal asymmetric encryption padding 846OBO off by one 847OBOE off by one error 848OCL object constraint language 849OCR optical character recognition 850ODCM on-demand clock modulation 851ODT on-die termination 852OEM original equipment manufacturer 853OFDM orthogonal frequency division multiplexing 854OFET organic field-effect transistor 855OLAP online analytical processing 856OLE object linking and embedding 857OLTP online transaction processing 858ONFI open nand flash interface 859OO OpenOffice 860OO object oriented 861OOB out of band 862OOE out of order execution 863OOM out of memory 864OOO OpenOffice.org 865OOP object oriented programming 866OOPS object oriented programming systems 867OOSE object oriented software engineering 868OPM operations per minute 869OPS operations per second 870OQL Object Query Language 871ORB object request broker 872ORM object-relational mapping 873OS operating system 874OSD open source definition 875OSF open software foundation 876OSI Open Source Initiative 877OSI open systems interconnection 878OSPF open shortest path first 879OSPM OS power management 880OSS open sound system 881OSS open source software 882OSVW operating system visible workarounds 883OTP one time password 884OTP open telecom platform 885OU organizational unit 886OUI organizationally unique identifier 887OWL Web Ontology Language 888P2P PCI to PCI 889P2P peer to peer 890PA phase accumulator 891PA physical address 892PAC phase-amplitude converter 893PAE physical address extension 894PAL phase alternating line 895PAL programmable array logic 896PAM pluggable authentication modules 897PAM pulse amplitude modulation 898PAP password authentication protocol 899PAT page attribute table 900PAT port address translation 901PATA parallel ATA 902PAX portable archive exchange 903PBE pending break encoding 904PBE programming by example 905PC personal computer 906PC program counter 907PCB printed circuit board 908PCB process control block 909PCC Portable C Compiler 910PCD page-level cache disable 911PCE performance-monitor counter enable 912PCI peripheral component interconnect 913PCM phase change memory 914PCM pulse code modulation 915PCMCIA Personal Computer Memory Card International Association 916PCP Port Control Protocol 917PD public domain 918PDA personal digital assistant 919PDA pushdown automaton 920PDAG propositional directed acyclic graph 921PDB power distribution board 922PDF portable document format 923PDM pulse-duration modulation 924PDN pull-down network 925PDP page {descriptor,directory} page 926PDS product data sheet 927PDU protocol data unit 928PE protection enable 929PEAP Protected EAP 930PECI platform environment control interface 931PEP protocol extension protocol 932PER packed encoding rules 933PFS perfect forward secrecy 934PGAS partitioned global address space 935PGE page global enable 936PGP Pretty Good Privacy 937PHB PCI host bridge 938PHP PHP: Hypertext Preprocessor 939PIC position independent code 940PIC programmable interrupt controller 941PICNIC problem in chair, not in computer 942PID process id 943PIE position independent executable 944PIM personal information manager 945PIM platform-independent model 946PIO programmed input/output 947PIPT physically indexed, physically tagged 948PIQ prefetch input queue 949PIT programmable interrupt timer 950PIV personal identity verification 951PKCS public-key cryptography standards 952PKI public key infrastructure 953PLC programmable logic controller 954PLD programmable logic device 955PLL phase locked loop 956PLRU pseudo LRU 957PLTM package level thermal management 958PM power management 959PM {phase,pulse} modulation 960PME power management event 961PMI platform management interrupt 962PMIO port-mapped input/output 963PMT photo-multiplier tube 964PMU power management unit 965PNG portable network graphics 966PNP plug and play 967POE power over ethernet 968POF probability of failure 969POP Post Office Protocol 970POP power on password 971POSIX Portable Operating System Interface [for Unix] 972POST power on self test 973POTS plain old telephone system 974PP pair programming 975PPB PCI [to] PCI bridge 976PPC PowerPC 977PPI pixels per inch 978PPM pages per minute 979PPP Point-to-Point Protocol 980PPPOA Point-to-Point Protocol over ATM 981PPPOE Point-to-Point Protocol over Ethernet 982PPU physics processing unit 983PRBS pseudo-random bit sequence 984PRML partial response, maximum likelihood 985PRN pseudo random {noise,number} 986PRNG pseudo random number generator 987PROM programmable read only memory 988PSD power spectral density 989PSE page size extensions 990PSK phase shift keying 991PSK pre-shared key 992PSTN public switched telephone network 993PSW program status word 994PTE page table entry 995PTLA pseudo top level aggregator 996PTP page table page 997PTV perceived target value 998PU processing unit 999PUN physical unit number 1000PV physical volume 1001PVG physical volume group 1002PVI protected-mode virtual interrupt 1003PVST Per-VLAN Spanning Tree 1004PWM pulse width modulation 1005PXE preboot execution environment 1006QA quality assurance 1007QAM quadrature amplitude modulation 1008QAM quality assurance management 1009QBE query by example 1010QC quality control 1011QDI quasi delay insensitive 1012QOS quality of service 1013R/O read only 1014R/W read/write 1015RA receiver address 1016RA remote assistance 1017RA resource affinity 1018RA router advertisement 1019RAD rapid application development 1020RAID redundant array of {independent,inexpensive} disks 1021RAM random access memory 1022RAS reliability, availability and serviceability 1023RAS remote access service 1024RAS restartable atomic sequence 1025RAS row address strobe 1026RBF radial basis function 1027RBT red-black tree 1028RC release candidate 1029RC remote control 1030RCS Revision Control System 1031RCS revision control system 1032RCU read, copy, update 1033RDB Rigid Disk Block 1034RDBMS relational database management system 1035RDF Resource Description Framework 1036RDM relational data model 1037RDMA remote direct memory access 1038RE regular expression 1039REST representational state transfer 1040RF radio frequency 1041RFI radio frequency interference 1042RFO request for ownership 1043RGB red green blue 1044RGBA red green blue alpha 1045RH read hit 1046RHEL Red Hat Enterprise Linux 1047RHL Red Hat Linux 1048RIB routing information base 1049RIFF Resource Interchange File Format 1050RIP Routing Information Protocol 1051RIR regional Internet registry 1052RISC reduced instruction set {computer,computing} 1053RKM ROM Kernel Manual 1054RLE run length encoding 1055RLL run length limited 1056RLO right-to-left override 1057RM read miss 1058RMI remote method invocation 1059RMPM rapid memory power management 1060RMS root mean square 1061RMW read, modify, write 1062RNG random number generator 1063ROM read only memory 1064RPC remote procedure call 1065RPKI resource PKI 1066RPL requested privilege level 1067RPM revolutions per minute 1068RPN reverse Polish notation 1069RPVST Rapid Per-VLAN Spanning Tree 1070RR random replacement 1071RR round robin 1072RS relay station 1073RSA Rivest, Shamir, [and] Adleman 1074RSIP Realm Specific IP 1075RSN Robust Secure Network 1076RSS really simple syndication 1077RSS residual sum of squares 1078RSTP Rapid Spanning Tree Protocol 1079RT real time 1080RTC real time clock 1081RTC real time computing 1082RTF rich text format 1083RTL register transfer language 1084RTL resistor-transistor logic 1085RTL right to left 1086RTOS real time operating system 1087RTS request to send 1088RTT round trip time 1089RUP rational unified process 1090RWM read-write memory 1091RX {receive,receiver} 1092S/PDIF Sony/Philips Digital Interface Format 1093SA security advisory 1094SA security association 1095SA source address 1096SA structured analysis 1097SAAS software as a service 1098SACD super audio compact disc 1099SAD security association database 1100SAL system abstraction layer 1101SAM serial access memory 1102SAM sum addressed memory 1103SAN storage area network 1104SAP service access point 1105SAPIC streamlined advanced programmable interrupt controller 1106SASD structured analysis, structured design 1107SASI Shugart Associates System Interface 1108SASL simple authentication [and] security layer 1109SATA serial advanced technology attachment 1110SB sound blaster 1111SBU standard build unit 1112SC store conditional 1113SCA source code analyzer 1114SCADA supervisory control and data acquisition 1115SCC single chip cloud 1116SCC source code control 1117SCCS Source Code Control System 1118SCI scalable coherent interface 1119SCI system control interrupt 1120SCM software configuration management 1121SCM source code management 1122SCM storage-class memory 1123SCP secure copy 1124SCSI Small Computer System Interface 1125SCTP Stream Control Transmission Protocol 1126SDI symbol deinterleave 1127SDK software development kit 1128SDL Simple Declarative Language 1129SDL Simple Direct-media Layer 1130SDRAM synchronous dynamic random access memory 1131SDT syntax-directed translation 1132SEGV segmentation violation 1133SEO search engine optimization 1134SFC sequential function chart 1135SFI simple firmware interface 1136SFI software fault isolation 1137SFTP SSH File Transfer Protocol 1138SFTP Serial File Transfer Protocol 1139SFTP Simple File Transfer Protocol 1140SGRAM synchronous graphics random access memory 1141SIEM security information and event management 1142SIFS short inter-frame space 1143SIMD single instruction, multiple data 1144SIMM single inline memory module 1145SIP Session Initiation Protocol 1146SIR signal-to-interference ratio 1147SIR slow infrared 1148SISD single instruction, single data 1149SLC single-level cell 1150SLDRAM synchronous-link dynamic random access memory 1151SLED single large expensive disk 1152SLI scalable link interface 1153SLI scan-line interleave 1154SLOC source lines of code 1155SLRU segmented LRU 1156SMA smart memory access 1157SMAF system management action field 1158SMAP Simple Mail Access Protocol 1159SMAP supervisor mode access prevention 1160SMART self-monitoring analysis and reporting technology 1161SMBIOS System Management BIOS 1162SMC system management controller 1163SMI structure of management information 1164SMI system management interrupt 1165SMM system management mode 1166SMP symmetric multiprocessing 1167SMT simultaneous multithreading 1168SMTP Simple Mail Transfer Protocol 1169SMU system management unit 1170SNAP Sub-Network Access Protocol 1171SNMP Simple Network Management Protocol 1172SNR signal-to-noise ratio 1173SOA service oriented architecture 1174SOAP Simple Object Access Protocol 1175SOC system on chip 1176SOF start of frame 1177SOH start of header 1178SOHO small office/home office 1179SOL serial over LAN 1180SP service pack 1181SP stack pointer 1182SPARC scalable processor architecture 1183SPARQL SPARQL Protocol and RDF Query Language 1184SPD security policy database 1185SPD serial presence detect 1186SPDIF Sony/Philips digital interface format 1187SPI serial peripheral interface 1188SPI stateful packet inspection 1189SPMD single process, multiple data 1190SPR special purpose register 1191SPT sectors per track 1192SQA software quality assurance 1193SQL Structured Query Language 1194SRAM static random access memory 1195SRC sample rate conversion 1196SS self-snoop 1197SS stack segment 1198SSAP source service access point 1199SSB single-sideband modulation 1200SSD solid state drive 1201SSE streaming SIMD extensions 1202SSFDC solid state floppy disc card 1203SSH secure shell 1204SSI server side includes 1205SSID service set identifier 1206SSL secure sockets layer 1207SSP stack smashing protection 1208STC software thermal control 1209STD state transition diagram 1210STP Spanning Tree Protocol 1211STP shielded twisted pair 1212SUS Single Unix Specification 1213SUT system under test 1214SVG scalable vector graphics 1215SVGA Super Video Graphics Array 1216SVM secure virtual machine 1217SVM support vector machine 1218SVR System V Release 1219SWF Shockwave Flash 1220SWIG simplified wrapper [and] interface generator 1221SYR symbol timing recovery 1222TA test assertion 1223TA transmitter address 1224TAI international atomic time 1225TAO track at once 1226TAOCP The Art of Computer Programming 1227TAP Test Anything Protocol 1228TAS test and set 1229TB terabyte 1230TCB trace capture buffer 1231TCB trusted computing base 1232TCC thermal control circuit 1233TCL tool command language 1234TCP Transmission Control Protocol 1235TCQ tagged command queueing 1236TDC time [to] digital converter 1237TDD test driven development 1238TDD time division duplex 1239TDM time division multiplexing 1240TDMA time division multiple access 1241TDOA time difference of arrival 1242TDP thermal design {point,power} 1243TECO Text Editor and Corrector 1244TFT thin film transistor 1245TFTP Trivial File Transfer Protocol 1246TIAS try it and see 1247TIFF tagged image file format 1248TITS try it to see 1249TK temporal key 1250TKIP Temporal Key Integrity Protocol 1251TLA top level aggregator 1252TLB translation lookaside buffer 1253TLD top level domain 1254TLS thread local storage 1255TLS transport layer security 1256TM Turing machine 1257TM thermal monitor 1258TMDS transition minimized differential signaling 1259TMO timeout 1260TOD time of day 1261TOS terms of service 1262TOS trusted operating system 1263TOS type of service 1264TP transaction processing 1265TPI tracks per inch 1266TPM transactions per minute 1267TPM trusted platform module 1268TPR task priority register 1269TPS transactions per second 1270TPS transmission parameters signaling 1271TR task register 1272TR token ring 1273TRL timing recovery loop 1274TRNG true random number generator 1275TS terminal services 1276TS time series 1277TS time stamp 1278TS transport stream 1279TSC time stamp counter 1280TSD time stamp disable 1281TSL test, set, lock 1282TSO time sharing option 1283TSP Time-Stamp Protocol 1284TSP Tunnel Setup Protocol 1285TSP time synchronization protocol 1286TSP traveling salesman problem 1287TSS task state segment 1288TTL time to live 1289TTL transistor-transistor logic 1290TTM translation table maps 1291TTY teletype 1292TUI {terminal,text-based,textual} user interface 1293TX {transmit out,transmitter} 1294TZ time zone 1295UAC user {access,account} control 1296UAF use-after-free 1297UART universal asynchronous receiver/transmitter 1298UAT user acceptance testing 1299UC uncacheable 1300UCS uniform-cost search 1301UDMA ultra DMA 1302UDO ultra density optical 1303UDP User Datagram Protocol 1304UEFI unified extensible firmware interface 1305UFS Unix File System 1306UGA universal graphics adapter 1307UI unit interval 1308UI user interface 1309UID unique identifier 1310UID user identifier 1311UL upload 1312UMA uniform memory access 1313UMA upper memory area 1314UMB upper memory block 1315UML unified modeling language 1316UMPC ultra-mobile PC 1317UPNP universal plug and play 1318UPS uninterruptible power supply 1319URI uniform resource identifier 1320URL uniform resource locator 1321URN uniform resource name 1322USART universal synchronous/asynchronous receiver/transmitter 1323USB universal serial bus 1324USWC uncacheable speculative write combining 1325UT unit test 1326UTC coordinated universal time 1327UTP unshielded twisted pair 1328UUCP Unix-to-Unix Copy Protocol 1329UUID universally unique identifier 1330UUOC useless use of cat 1331UUT unit under test 1332UX user experience 1333VA vertical alignment 1334VA virtual address 1335VA volt-ampere 1336VAX virtual address extension 1337VB Visual Basic 1338VCA variable-gain amplifier 1339VCC common collector voltage 1340VCF voltage-controlled filter 1341VCM virtual channel memory 1342VCO voltage-controlled oscillator 1343VCS version control system 1344VESA Video Electronics Standards Association 1345VFO variable-frequency oscillator 1346VG volume group 1347VGA Video Graphics Array 1348VHDCI very high density cable interconnect 1349VID voltage level identifier 1350VIPT virtually indexed, physically tagged 1351VIVT virtually indexed, virtually tagged 1352VLAN virtual local area network 1353VLIW very long instruction word 1354VLSI very large scale integration 1355VLSM variable length subnet mask 1356VM virtual {machine,memory} 1357VME virtual mode extension 1358VMX vector multimedia extensions 1359VMX virtual machine extensions 1360VOD video on demand 1361VPN virtual private network 1362VR virtual reality 1363VRAM video random access memory 1364VRM voltage regulator module 1365VRRP Virtual Router Redundancy Protocol 1366VSTP VLAN Spanning Tree Protocol 1367VTP VLAN Trunking Protocol 1368W watt 1369W3C World Wide Web Consortium 1370WAN wide area network 1371WAP Wireless Application Protocol 1372WAP wireless access point 1373WDT watchdog timer 1374WEP Wired Equivalent Privacy 1375WFI wait for interrupt 1376WFQ weighted fair queuing 1377WH write hit 1378WIFI wireless fidelity 1379WLAN wireless local area network 1380WM write miss 1381WMI Windows Management Instrumentation 1382WOL Wake-on-LAN 1383WOM Wake-on-Modem 1384WOR Wake-on-Ring 1385WORM write once read many 1386WP WordPerfect 1387WP word processor 1388WP write protect 1389WPA Wi-Fi Protected Access 1390WPA2 Wi-Fi Protected Access II 1391WPS Wi-Fi Protected Setup 1392WRAM window random access memory 1393WS web services 1394WTC write through caching 1395WWAN wireless wide area network 1396WWW world wide web 1397WYSIWYG what you see is what you get 1398XBAR crossbar 1399XDMCP X Display Manager control protocol 1400XER XML encoding rules 1401XGA Extended Graphics Array 1402XIP execute in place 1403XML Extensible Markup Language 1404XOR exclusive or 1405XP extreme programming 1406XSI X/Open System Interface 1407XSL extensible stylesheet language 1408XSS cross site scripting 1409XT extended technology 1410XUL XML user interface language 1411YACC yet another compiler compiler 1412YAWPFAPR you are welcome; please file a problem report 1413YP Yellow Pages 1414YTD year to date 1415ZBR zone bit recording 1416ZFOD zero-filled on demand 1417ZIF zero insertion force 1418ZIFS zero insertion force socket 1419ZMA zone multicast address 1420