acronyms.comp revision 1.159
1$NetBSD: acronyms.comp,v 1.159 2016/02/26 08:20:27 jnemeth Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABI application binary interface 8ABR available bit rate 9AC alternating current 10ACI adjacent channel interferer 11ACID atomicity, consistency, isolation, durability 12ACK Amsterdam compiler kit 13ACK acknowledgement 14ACL access control list 15ACL active current loop 16ACP auxillary control {process,program} 17ACPI advanced configuration and power interface 18ACS access control set 19ACU automatic calling unit 20ADB Apple desktop bus 21ADC analog [to] digital converter 22ADD acronym driven development 23ADO active data objects 24ADP automatic data processing 25ADPCM adaptive differential pulse code modulation 26ADS alternate data stream 27ADSL asymmetric digital subscriber line 28ADT abstract data type 29AES Advanced Encryption Standard 30AFS Andrew File System 31AGC automatic gain control 32AGP accelerated graphics port 33AI analog input 34AI artificial intelligence 35AL access list 36AL active link 37ALE address latch enable 38ALS ambient light sensor 39ALU arithmetic and logical unit 40ALUA asymmetric logical unit access 41AM access method 42AM alignment mask 43AM amplitude modulation 44AMI alternate mark inversion 45AMQP advanced message queuing protocol 46AMT active management technology 47AN Arabic number 48ANSI American National Standards Institute 49AO analog output 50AOL Alert-on-LAN 51AOS add or subtract 52AP access point 53AP application processor 54API application programming interface 55APIC advanced programmable interrupt controller 56APIPA automatic private IP addressing 57APT advanced persistent threat 58AQM active queue management 59ARAT always running APIC timer 60ARC adaptive replacement cache 61ARM Advanced RISC Machines 62ARP Address Resolution Protocol 63ARPA Advanced Research Projects Agency 64ARQ automatic repeat request 65ARR address range register 66ARU audio response unit 67AS autonomous system 68ASC advanced smart cache 69ASCII American Standard Code for Information Interchange 70ASD agile software development 71ASE advanced software environment 72ASIC application-specific integrated circuit 73ASK amplitude shif keying 74ASLR address space layout randomization 75ASN autonomous system number 76ASPM active state power management 77ASQ automated software quality 78ASR address space register 79AST abstract syntax tree 80AST asynchronous trap 81AT access time 82AT advanced technology 83ATA advanced technology attachment 84ATAPI advanced technology attachment packet interface 85ATC address translation cache 86ATM asynchronous transfer mode 87ATX advanced technology extended 88AV anti virus 89AVL Adelson-Velsky-Landis 90AVX advanced vector extensions 91BA byte align 92BAL basic assembly language 93BAR base address register 94BBS bulletin board system 95BCC blind carbon copy 96BCD binary coded decimal 97BCR byte count register 98BCS base configuration space 99BD baud 100BDD binary decision diagram 101BDI bit deinterleave 102BDUF big design up front 103BEDO burst extended data output 104BER basic encoding rules 105BER bit error {rate,ratio} 106BFD binary {file,format} descriptor 107BFKL big fscking kernel lock 108BFS breadth-first search 109BFT binary file transfer 110BGA ball grid array 111BGP Border Gateway Protocol 112BIND Berkeley Internet Name Daemon 113BIOS Basic Input/Output System 114BIOS built-in operating system 115BIST built-in self-test 116BIU bus interface unit 117BKDG BIOS and kernel developer's guide 118BLAS basic linear algebra subprograms 119BLC back light control 120BLOB binary large object 121BM bus master 122BMC baseboard management controller 123BMIC bus master interface controller 124BN boundary neutral 125BNF Backus-Naur form 126BO binary output 127BOF beginning of file 128BOM beginning of message 129BOM byte order mark 130BP base pointer 131BP boot processor 132BPB BIOS parameter block 133BPF Berkeley Packet Filter 134BPI bits per inch 135BPM business process modelling 136BPS bits per second 137BPSK binary phase shift keying 138BQS Berkeley quality software 139BRE basic regular expression 140BS backspace 141BS binary sequence 142BSA basic service area 143BSD Berkeley Software Distribution 144BSF bit scan forward 145BSOD blue screen of death 146BSP binary space partition 147BSP bootstrap processor 148BSR bit scan reverse 149BSS basic service set 150BSS block started by symbol 151BSSID basic service set identifier 152BT BitTorrent 153BT Bluetooth 154BT bit test 155BTC bit test [and] complement 156BTR bit test [and] reset 157BTS bit test [and] set 158BTS bits per second 159BW bandwidth 160BWM block-write mode 161CA certificate authority 162CAD computer-aided design 163CAM computer assisted manufacturing 164CAM conditional access module 165CAM content addressable memory 166CARP Common Address Redundancy Protocol 167CAS column address strobe 168CAS compare and swap 169CAS computer algebra system 170CASE computer aided software engineering 171CAU control access unit 172CAV constant angular velocity 173CBC cipher block chaining 174CBR constant bit rate 175CC carbon coby 176CCD charge coupled device 177CCI co-channel interferer 178CD cache disable 179CD compact disc 180CDDA compact disc digital audio 181CDMA code division multiple access 182CDRAM cache dynamic random access memory 183CER canonical encoding rules 184CF compact flash 185CFG context-free grammar 186CFG control-flow graph 187CG control gate 188CGA Color Graphics Adapter 189CGI common gateway interface 190CGN Carrier-Grade NAT 191CHAP Challenge-Handshake Authentication Protocol 192CHS cylinder/head/sector 193CI continuous integration 194CI {common,component} interface 195CIDR Classless Inter-Domain Routing 196CIFS Common Internet File System 197CIL common intermediate language 198CIR carrier-to-interference ratio 199CIS contact image sensor 200CISC complex instruction set {computer,computing} 201CJK Chinese, Japanese, [and] Korean 202CLF common log format 203CLI command line interface 204CLR common language runtime 205CLTT closed loop thermal throttling 206CLUT color look-up table 207CLV constant linear velocity 208CM configuration management 209CMA concert multithread architecture 210CMI control management interface 211CMI control method interface 212CMOS complementary metal-oxide-semiconductor 213CMP chip multi-processing 214CMS content management system 215CMYK cyan magenta yellow black 216CN {common,canonical} name 217CNC computer numerical control 218CNR carrier-to-noise ratio 219COF current operating frequency 220COFDM coded orthogonal frequency division multiplexing 221COFF common object file format 222COM component object model 223COMA cache-only memory architecture 224CORBA common object request broker architecture 225COW copy-on-write 226CP continuous pilot 227CPB core performance boost 228CPE common phase error 229CPG clock pulse generator 230CPL current privilege level 231CPLD complex programmable logic device 232CPP C preprocessor 233CPS characters per second 234CPT command pass through 235CPU central processing unit 236CR carriage return 237CRC cyclic redundancy check 238CRL carrier recovery loop 239CRLF carriage return line feed 240CRT cathode ray tube 241CS cable select 242CS chip select 243CS code segment 244CS computer science 245CSI channel state information 246CSI common system interface 247CSMA carrier sense multiple access 248CSMA/CA carrier sense multiple access with collision avoidance 249CSMA/CD carrier sense multiple access with collision detection 250CSR control [and] status registers 251CSRG Computer Systems Research Group 252CSS cascading style sheets 253CSV comma-separated values 254CTM close to metal 255CTS clear to send 256CUA common user access 257CUT coordinated universal time 258CV control voltage 259CVS Concurrent Versions System 260DA destination address 261DAA distributed application architecture 262DAB digital audio broadcasting 263DAC digital [to] analog converter 264DAC discretionary access control 265DAD duplicate address detection 266DAO disk at once 267DAP Directory Access Protocol 268DAT digital audio tape 269DAT dynamic acceleration technology 270DB database 271DBA database administrator 272DBA dynamic bandwidth allocation 273DBB data bus buffer 274DBC design by contract 275DBL dynamic buffer limiting 276DBMS database management system 277DBS database server 278DC direct current 279DCC Direct Client-to-Client 280DCC direct cable connect 281DCD data carrier detect 282DCE data control equipment 283DCE distributed computing environment 284DCOM distributed component object model 285DCOP Desktop COmmunication Protocol 286DCS data collection systems 287DCT discrete cosine transform 288DCU data cache unit 289DDC display data channel 290DDE dynamic data exchange 291DDK device driver kit 292DDL data description language 293DDR double data rate 294DDS direct digital sound 295DDWG Digital Display Working Group 296DE debugging extensions 297DE desktop environment 298DEA data encryption algorithm 299DEK data encryption key 300DEP data execution prevention 301DER distinguished encoding rules 302DES Data Encryption Standard 303DF don't fragment 304DFA deterministic finite automaton 305DFC data flow control 306DFS depth first search 307DFS distributed file system 308DFT diagnostic function test 309DFT discrete Fourier transform 310DGL data generation language 311DH Diffie-Hellman 312DHCP Dynamic Host Configuration Protocol 313DIFS distributed inter-frame space 314DIMM dual inline memory module 315DIRT design in real time 316DL diode logic 317DL discrete logarithm 318DL download 319DLE data link escape 320DLL dynamic link library 321DLP discrete logarithm problem 322DMA direct memory access 323DMI desktop management interface 324DMS document management system 325DMT discrete multitone modulation 326DNARD Digital network appliance reference design 327DND drag and drop 328DNS Domain Name System 329DOE distributed object environment 330DOF data over fibre 331DOM document object model 332DOS denial of service 333DOS disk operating system 334DP DisplayPort 335DPC deferred procedure call 336DPCM differential pulse code modulation 337DPD dead peer detection 338DPI deep packet inspection 339DPI dots per inch 340DPL descriptor privilege level 341DPS Display PostScript 342DPST display power savings technology 343DRAM dynamic random access memory 344DRI direct rendering infrastructure 345DRM digital rights management 346DRRS display refresh rate switching 347DS debug store 348DSA digital signature algorithm 349DSB double-sideband modulation 350DSDT differentiated system descriptor table 351DSL digital subscriber line 352DSL domain specific language 353DSLAM digital subscriber line access multiplexer 354DSN delivery status notification 355DSO dynamic shared object 356DSP digital signal processor 357DSSS direct sequence spread spectrum 358DTD document type definition 359DTE data terminal equipment 360DTE dumb terminal emulator 361DTL diode-transistor logic 362DTS digital thermal sensor 363DUT device under test 364DVB digital video broadcasting 365DVCS distributed version control system 366DVD digital versatile disc 367DVFS dynamic voltage and frequency scaling 368DVI device independent 369DVI Digital Visual Interface 370DVR digital video recorder 371E-XER extended XML encoding rules 372EABI embedded-application binary interface 373EAI Email Address Internationalization 374EAI Enterprise Application Integration 375EAP Extensible Authentication Protocol 376EBCDIC Extended Binary Coded Decimal Interchange Code 377EBR extended boot record 378EC elliptical curve 379ECC error correction code 380ECDL elliptical curve discrete logarithm 381ECDSA elliptical curve digital signature algorithm 382ECL emitter-coupled logic 383ECN explicit congestion notification 384ECP enhanced capability port 385ECS enhanced chip set 386ECS extended configuration space 387EDAT enhanced dynamic acceleration technology 388EDGE explicit data graph execution 389EDID extended display identification data 390EDO extended data out 391EDS electronical data sheet 392EEPROM electrically erasable programmable read only memory 393EFI extensible firmware interface 394EFL emitter follower logic 395EFM eight to fourteen modulation 396EGA Enhanced Graphics Adapter 397EGP exterior gateway protocol 398EH extension header 399EIDE enhanced IDE 400EISA extended industry standard architecture 401ELF executable and linking format 402ELS entry level system 403EMI electro-magnetic interference 404EMP electro-magnetic pulse 405EMR electro-magnetic radiation 406EOF end of file 407EOI end of interrupt 408EOL end of line 409EOT end of transmission 410EPIC explicitly parallel instruction computing 411EPP enhanced parallel port 412EPRML extended partial response, maximum likelihood 413EPROM erasable programmable read only memory 414ERD emergency recovery disk 415ERD entity relationship diagram 416ERE extended regular expression 417ESDRAM enhanced synchronous dynamic random access memory 418ESS electronic switching system 419ESS extended service set 420ESSID extended service set identifier 421EST enhanced speedstep 422ETL extract, transform, load 423EU execution unit 424EULA end user license agreement 425FAT file allocation table 426FBRAM frame buffer random access memory 427FCL fiber channel loop 428FCS frame check sequence 429FDC floppy disk controller 430FDD floppy disk drive 431FDDI fiber distributed data interface 432FDE full disk encryption 433FEA finite element analysis 434FEC forward error correction 435FET field-effect transistor 436FF form feed 437FFH functional fixed hardware 438FFI foreign function interface 439FFM focus follows mouse 440FFS Fast File System 441FFS find first set 442FFT fast Fourier transform 443FG floating gate 444FHSS frequency hop spread spectrum 445FID frequency identifier 446FIFO first in, first out 447FILO first in, last out 448FIR fast infrared 449FLOPS floating [point] operations per second 450FLOSS free/libre/open source software 451FM frequency modulation 452FMR false match rate 453FOSS free/open source software 454FPGA field programmable gate array 455FPM fast page mode 456FPR floating point register 457FPU floating point unit 458FQDN fully qualified domain name 459FRR false rejection rate 460FRU field replaceable unit 461FS file system 462FSB front side bus 463FSCK file system check 464FSF Free Software Foundation 465FSK frequency shift keying 466FSM finite-state machine 467FTA fault tree analysis 468FTL flash translation layer 469FTP File Transfer Protocol 470FTPS File Transfer Protocol Secure 471FUS fast user switching 472FWH firmware hub 473FWS folding white space 474GAL generic array logic 475GAS generic address structure 476GC garbage collector 477GCR group-coded recording 478GDT global descriptor table 479GEM graphics environment manager 480GEM graphics execution manager 481GENA general event notification architecture 482GHC Glasgow Haskell compiler 483GID group identifier 484GIF graphics interchange format 485GMCH graphics and memory controller hub 486GNU GNU's Not Unix 487GOP graphics output protocol 488GOT global offset table 489GPE general purpose event 490GPF general protection fault 491GPG GNU Privacy Guard 492GPL [GNU] General Public License 493GPR general purpose register 494GPS generalized processor sharing 495GPT GUID partition table 496GPU graphics processing unit 497GR golden ratio 498GRE generic routing encapsulation 499GSI global system interrupt 500GUI graphical user interface 501GUID globally unique identifier 502HA high availability 503HAL hardware abstraction layer 504HAT hashed array tree 505HBA host bus adapter 506HCF halt and catch fire 507HCI host controller interface 508HCI human-computer interaction 509HCL hardware compatibility list 510HDCP High-bandwidth Digital Content Protection 511HDD hard disk drive 512HDL hardware description language 513HDMI High-Definition Multimedia Interface 514HDTV high-definition television 515HF high frequency 516HFM highest frequency mode 517HID human interface device 518HLL high-level language 519HMA high memory area 520HMI human-machine interface 521HOOD hierarchical object oriented design 522HP Hewlett-Packard 523HPC high performance computing 524HPET high precision event timer 525HT hyper-threading 526HTC hardware thermal control 527HTCC high temperature co-fired ceramic 528HTML HyperText Markup Language 529HTT hyper-threading technology 530HTTP Hypertext Transfer Protocol 531HTTPS Hypertext Transfer Protocol Secure 532HVM hardware virtual machine 533HZ Hertz 534I2O intelligent input/output 535IA information assurance 536IANA Internet Assigned Numbers Authority 537IBC iterated block cipher 538IBM International Business Machines 539IBS instruction based sampling 540IBSS independent basic service set 541IC integrated circuit 542ICA independent computer architecture 543ICB Internet Citizen's Band 544ICE in-circuit emulator 545ICE internal compiler error 546ICH I/O controller hub 547ICMP Internet Control Message Protocol 548ICT information and communications technology 549ICW initialization command word 550IDA Intel dynamic acceleration 551IDCMP Intuition direct communication message port 552IDE integrated development environment 553IDE integrated drive electronics 554IDPS intrusion detection [and] prevention system 555IDRP inter-domain routing protocol 556IDS intrusion detection system 557IDT interrupt descriptor table 558IE Internet Explorer 559IEC International Electrotechnical Commission 560IEEE Institute of Electrical and Electronics Engineers 561IESG Internet Engineering Steering Group 562IETF Internet Engineering Task Force 563IF intermediate frequency 564IFCM isochronous flow control mode 565IFF Interchange File Format 566IGD Internet gateway device 567IGMP Internet Group Management Protocol 568IGP interior gateway protocol 569IHV independent hardware vendor 570IKE Internet key exchange 571ILM internal loopback mode 572ILOM integrated lights-out management 573ILP instruction level parallelism 574IM instant messaging 575IMAP Internet Message Access Protocol 576IMC integrated memory controller 577IMCR interrupt mode configuration register 578IMR interrupt mask register 579IMS information management system 580INCITS InterNational Committee for Information Technology Standards 581IO input/output 582IOCTL input/output control 583IOMMU input/output memory management unit 584IOT Internet of Things 585IP Internet Protocol 586IP intellectual property 587IPC interprocess communication 588IPE integrated programming environment 589IPI interprocessor interrupt 590IPNG Internet Protocol, Next Generation 591IPS in-plane switching 592IPS intrusion prevention system 593IPSEC Internet Protocol Security 594IRC Internet Relay Chat 595IRDA infrared data association 596IRQ interrupt request 597IRQL interrupt request level 598IRR interrupt request register 599IRTF Internet Research Task Force 600IS information system 601ISA industry standard architecture 602ISA instruction set architecture 603ISDN integrated services digital network 604ISI inter-symbol interference 605ISM industrial, scientific, [and] medical 606ISN initial serial number 607ISO International Standards Organization 608ISOC Internet Society 609ISP Internet service provider 610ISR in-service register 611ISR interrupt service routine 612IST interrupt stack table 613ISV independent software vendor 614IT information technology 615ITB Intel Turbo Boost 616IV initialization vector 617IVT interrupt vector table 618JBOD just a bunch of disks 619JFET junction [gate] field-effect transistor 620JIT just in time 621JPEG Joint Photographic Experts Group 622JRE Java Runtime Environment 623JTAG joint test action group 624KB keyboard 625KB kilobyte 626KBD keyboard 627KBD kilobaud 628KLOC thousand lines of code 629KMS kernel-mode setting 630KPI kernel programming interface 631KVA kernel virtual address 632KVM kernel virtual machine 633KVM kernel virtual memory 634KVM keyboard, video, [and] mouse 635LAMP Linux Apache MySQL {Perl,PHP,Python} 636LAN local area network 637LAPIC local advanced programmable interrupt controller 638LAR load access rights 639LBA logical block addressing 640LBS location-based service 641LCD liquid crystal display 642LCP link control protocol 643LDA local delivery agent 644LDAP Lightweight Directory Access Protocol 645LDR light-dependent resistor 646LDT local descriptor table 647LE logical extent 648LED light emitting diode 649LER label edge router 650LF line feed 651LF low frequency 652LFM lowest frequency mode 653LFN long file names 654LFO low-frequency oscillation 655LFS log-structured file system 656LFU least frequently used 657LHP loop heat pipe 658LIFO last in, first out 659LILO LInux LOader 660LILO last in, last out 661LINT local interrupt 662LIR local Internet registry 663LKM {Linux,loadable} kernel module 664LKML Linux kernel mailing list 665LL load linked 666LL/SC load linked/store conditional 667LLC logical link control 668LLDP link layer discovery protocol 669LLF low level format 670LLMNR link-local multicast name resolution 671LLVM Low Level Virtual Machine 672LM long mode 673LMM link management mode 674LNO loop nest optimization 675LOC lines of code 676LOM lights-out management 677LPC low pin count 678LPS local positioning system 679LRC longitudinal redundancy check 680LRM left-to-right mark 681LRO left-to-right override 682LRU least recently used 683LSB Linux standards base 684LSB least significant {bit,byte} 685LSI large scale integration 686LSL load segment limit 687LSN Large Scale NAT 688LSN log sequence number 689LSR label switch router 690LTCC low temperature co-fired ceramic 691LTO link time optimization 692LTR left to right 693LTR load task register 694LTR letter(-sized paper) 695LTS long term support 696LUA Lua Uppercase Accident 697LUN logical unit number 698LV logical volume 699LVM logical volume management 700LVT local vector table 701LWP light-weight process 702LZW Lempel Ziv Welch 703MAC mandatory access control 704MAC medium access control 705MAC message authentication {check,code} 706MADT multiple APIC descriptor table 707MB megabyte 708MBA multi-boot agent 709MBR master boot record 710MBS megabits per second 711MC memory controller 712MCA machine check architecture 713MCA MicroChannel architecture 714MCC multiversion concurrency control 715MCE machine check exception 716MCGA Multi-Color Graphics Array 717MCH memory controller hub 718MCM multi-chip module 719MCQ memory controlled queue 720MD machine-dependent 721MDA mail delivery agent 722MDA Monochrome Display Adapter 723MDRAM multibank dynamic random access memory 724MESI modified, exclusive, shared, invalid 725MFC merge from current 726MFC Microsoft Foundation Classes 727MFM modified frequency modulation 728MI machine-independent 729MIB management information base 730MIC message integrity {check,code} 731MID mobile Internet device 732MIDI musical instrument digital interface 733MIF management information format 734MIM man in the middle 735MIMD multiple instruction, multiple data 736MIME Multipurpose Internet Mail Extensions 737MIMO multiple input multiple output 738MIPS million instructions per second 739MISD multiple instruction, single data 740MIT Massachusetts Institute of Technology 741MITM man in the middle 742ML machine language 743ML machine learning 744ML mailing list 745ML markup language 746ML maximum likelihood 747MLC multi-level cell 748MLHP micro loop heat pipe 749MMIC monolithic microwave integrated circuit 750MMIO memory mapped input/output 751MMORPG massive multiplayer online role playing game 752MMU memory management unit 753MMX matrix math extension 754MMX multimedia extension 755MMX multiple math extension 756MO magneto-optical 757MOESI modified, owned, exclusive, shared, invalid 758MOF maximum operating frequency 759MOSFET metal-oxide-semiconductor field-effect transistor 760MOSI modified, owned, shared, invalid 761MP multi-platform 762MP multiplayer 763MP {multiprocessing,multiprocessor} 764MPEG moving picture experts group 765MPI message passing interface 766MPLS Multiprotocol Label Switching 767MPP massively parallel processor 768MPS memory pool system 769MPS multiprocessor specification 770MR modem ready 771MRU most recently used 772MS Microsoft 773MSB most significant {bit,byte} 774MSE mean square error 775MSF minutes seconds frames 776MSI message signaled interrupt 777MSI modified, shared, invalid 778MSR machine state register 779MSS maximum segment size 780MT machine translation 781MTA mail transfer agent 782MTBF mean time between failures 783MTP media transfer protocol 784MTRR memory type range register 785MTTF mean time to failure 786MTU maximum transmission unit 787MUA mail user agent 788MUD multi-user domain 789MVCC multiversion concurrency control 790MWE module width encoding 791MX mail exchange 792NACK negative acknowledgement 793NAN not a number 794NAPT Network Address Port Translation 795NAS network attached storage 796NAT network address translation 797NAV network allocation vector 798NC numerical control 799NCO numerically-controlled oscillator 800NCP Network Control Protocol 801NCQ native command queuing 802ND neighbor discovery 803NDFA nondeterministic finite automaton 804NE numeric error 805NFA nondeterministic finite automaton 806NFC near-field communication 807NFS network file system 808NIA next instruction address 809NIC network information center 810NIC network interface card 811NIDS network intrusion detection system 812NIP network interface protocol 813NIPS network intrusion prevention system 814NIS network information service 815NLS native language support 816NMI non-maskable interrupt 817NNTP Network News Transfer Protocol 818NOC network operations center 819NOP no operation 820NOS network operating system 821NP nondeterministic polynomial time 822NRZ non-return to zero 823NSA National Security Agency 824NTM non-deterministic Turing machine 825NTP Network Time Protocol 826NUMA non-uniform memory access 827NVRAM non-volatile random access memory 828NW not write-through 829NX no execute 830OAEP optimal asymmetric encryption padding 831OBO off by one 832OBOE off by one error 833OCL object constraint language 834OCR optical character recognition 835ODCM on-demand clock modulation 836ODT on-die termination 837OEM original equipment manufacturer 838OFDM orthogonal frequency division multiplexing 839OFET organic field-effect transistor 840OLAP online analytical processing 841OLE object linking and embedding 842OLTP online transaction processing 843ONFI open nand flash interface 844OO OpenOffice 845OO object oriented 846OOB out of band 847OOE out of order execution 848OOM out of memory 849OOO OpenOffice.org 850OOP object oriented programming 851OOPS object oriented programming systems 852OOSE object oriented software engineering 853OPM operations per minute 854OPS operations per second 855OQL Object Query Language 856ORB object request broker 857ORM object-relational mapping 858OS operating system 859OSD open source definition 860OSF open software foundation 861OSI Open Source Initiative 862OSI open systems interconnection 863OSPF open shortest path first 864OSPM OS power management 865OSS open sound system 866OSS open source software 867OSVW operating system visible workarounds 868OTP one time password 869OTP open telecom platform 870OU organizational unit 871OUI organizationally unique identifier 872OWL Web Ontology Language 873P2P PCI to PCI 874P2P peer to peer 875PA phase accumulator 876PA physical address 877PAC phase-amplitude converter 878PAE physical address extension 879PAL phase alternating line 880PAL programmable array logic 881PAM pluggable authentication modules 882PAM pulse amplitude modulation 883PAP password authentication protocol 884PAT page attribute table 885PAT port address translation 886PATA parallel ATA 887PAX portable archive exchange 888PBE pending break encoding 889PBE programming by example 890PC personal computer 891PC program counter 892PCB printed circuit board 893PCC Portable C Compiler 894PCD page-level cache disable 895PCE performance-monitor counter enable 896PCI peripheral component interconnect 897PCM phase change memory 898PCM pulse code modulation 899PCMCIA Personal Computer Memory Card International Association 900PCP Port Control Protocol 901PD public domain 902PDA personal digital assistant 903PDA pushdown automaton 904PDAG propositional directed acyclic graph 905PDB power distribution board 906PDF portable document format 907PDM pulse-duration modulation 908PDN pull-down network 909PDP page {descriptor,directory} page 910PDS product data sheet 911PDU protocol data unit 912PE protection enable 913PECI platform environment control interface 914PEP protocol extension protocol 915PER packed encoding rules 916PFS perfect forward secrecy 917PGAS partitioned global address space 918PGE page global enable 919PGP Pretty Good Privacy 920PHB PCI host bridge 921PHP PHP: Hypertext Preprocessor 922PIC position independent code 923PIC programmable interrupt controller 924PICNIC problem in chair, not in computer 925PID process id 926PIE position independent executable 927PIM personal information manager 928PIM platform-independent model 929PIO programmed input/output 930PIPT physically indexed, physically tagged 931PIQ prefetch input queue 932PIT programmable interrupt timer 933PIV personal identity verification 934PKCS public-key cryptography standards 935PKI public key infrastructure 936PLC programmable logic controller 937PLD programmable logic device 938PLL phase locked loop 939PLRU pseudo LRU 940PLTM package level thermal management 941PM power management 942PM {phase,pulse} modulation 943PME power management event 944PMI platform management interrupt 945PMIO port-mapped input/output 946PMT photo-multiplier tube 947PMU power management unit 948PNG portable network graphics 949PNP plug and play 950POE power over ethernet 951POF probability of failure 952POP Post Office Protocol 953POP power on password 954POSIX Portable Operating System Interface [for Unix] 955POST power on self test 956POTS plain old telephone system 957PP pair programming 958PPB PCI [to] PCI bridge 959PPC PowerPC 960PPI pixels per inch 961PPM pages per minute 962PPP Point-to-Point Protocol 963PPPOA Point-to-Point Protocol over ATM 964PPPOE Point-to-Point Protocol over Ethernet 965PPU physics processing unit 966PRBS pseudo-random bit sequence 967PRML partial response, maximum likelihood 968PRN pseudo random {noise,number} 969PRNG pseudo random number generator 970PROM programmable read only memory 971PSD power spectral density 972PSE page size extensions 973PSK phase shift keying 974PSK pre-shared key 975PSTN public switched telephone network 976PSW program status word 977PTE page table entry 978PTLA pseudo top level aggregator 979PTP page table page 980PTV perceived target value 981PU processing unit 982PUN physical unit number 983PV physical volume 984PVG physical volume group 985PVI protected-mode virtual interrupt 986PWM pulse width modulation 987PXE preboot execution environment 988QA quality assurance 989QAM quadrature amplitude modulation 990QAM quality assurance management 991QBE query by example 992QC quality control 993QDI quasi delay insensitive 994QOS quality of service 995R/O read only 996R/W read/write 997RA receiver address 998RA remote assistance 999RA resource affinity 1000RA router advertisement 1001RAD rapid application development 1002RAID redundant array of {independent,inexpensive} disks 1003RAM random access memory 1004RAS reliability, availability and serviceability 1005RAS remote access service 1006RAS restartable atomic sequence 1007RAS row address strobe 1008RBF radial basis function 1009RBT red-black tree 1010RC release candidate 1011RC remote control 1012RCS Revision Control System 1013RCS revision control system 1014RCU read, copy, update 1015RDB Rigid Disk Block 1016RDBMS relational database management system 1017RDF Resource Description Framework 1018RDM relational data model 1019RDMA remote direct memory access 1020RE regular expression 1021REST representational state transfer 1022RF radio frequency 1023RFI radio frequency interference 1024RFO request for ownership 1025RGB red green blue 1026RGBA red green blue alpha 1027RH read hit 1028RHEL Red Hat Enterprise Linux 1029RHL Red Hat Linux 1030RIB routing information base 1031RIFF Resource Interchange File Format 1032RIP Routing Information Protocol 1033RIR regional Internet registry 1034RISC reduced instruction set {computer,computing} 1035RKM ROM Kernel Manual 1036RLE run length encoding 1037RLL run length limited 1038RLO right-to-left override 1039RM read miss 1040RMI remote method invocation 1041RMPM rapid memory power management 1042RMS root mean square 1043RMW read, modify, write 1044RNG random number generator 1045ROM read only memory 1046RPC remote procedure call 1047RPL requested privilege level 1048RPM revolutions per minute 1049RPN reverse Polish notation 1050RR random replacement 1051RR round robin 1052RS relay station 1053RSA Rivest, Shamir, [and] Adleman 1054RSIP Realm Specific IP 1055RSS really simple syndication 1056RSS residual sum of squares 1057RT real time 1058RTC real time clock 1059RTC real time computing 1060RTF rich text format 1061RTL register transfer language 1062RTL resistor-transistor logic 1063RTL right to left 1064RTOS real time operating system 1065RTS request to send 1066RTT round trip time 1067RUP rational unified process 1068RWM read-write memory 1069RX {receive,receiver} 1070S/PDIF Sony/Philips Digital Interface Format 1071SA security advisory 1072SA security association 1073SA source address 1074SA structured analysis 1075SAAS software as a service 1076SACD super audio compact disc 1077SAD security association database 1078SAL system abstraction layer 1079SAM serial access memory 1080SAM sum addressed memory 1081SAN storage area network 1082SAPIC streamlined advanced programmable interrupt controller 1083SASD structured analysis, structured design 1084SASI Shugart Associates System Interface 1085SASL simple authentication [and] security layer 1086SATA serial advanced technology attachment 1087SB sound blaster 1088SBU standard build unit 1089SC store conditional 1090SCA source code analyzer 1091SCADA supervisory control and data acquisition 1092SCC single chip cloud 1093SCC source code control 1094SCCS Source Code Control System 1095SCI scalable coherent interface 1096SCI system control interrupt 1097SCM software configuration management 1098SCM source code management 1099SCM storage-class memory 1100SCP secure copy 1101SCSI Small Computer System Interface 1102SCTP Stream Control Transmission Protocol 1103SDI symbol deinterleave 1104SDK software development kit 1105SDL Simple Declarative Language 1106SDL Simple Direct-media Layer 1107SDRAM synchronous dynamic random access memory 1108SDT syntax-directed translation 1109SEGV segmentation violation 1110SEO search engine optimization 1111SFC sequential function chart 1112SFI simple firmware interface 1113SFI software fault isolation 1114SFTP SSH File Transfer Protocol 1115SFTP Serial File Transfer Protocol 1116SFTP Simple File Transfer Protocol 1117SGRAM synchronous graphics random access memory 1118SIFS short inter-frame space 1119SIMD single instruction, multiple data 1120SIMM single inline memory module 1121SIP Session Initiation Protocol 1122SIR signal-to-interference ratio 1123SIR slow infrared 1124SISD single instruction, single data 1125SLC single-level cell 1126SLDRAM synchronous-link dynamic random access memory 1127SLED single large expensive disk 1128SLI scalable link interface 1129SLI scan-line interleave 1130SLOC source lines of code 1131SLRU segmented LRU 1132SMA smart memory access 1133SMAF system management action field 1134SMART self-monitoring analysis and reporting technology 1135SMBIOS System Management BIOS 1136SMC system management controller 1137SMI structure of management information 1138SMI system management interrupt 1139SMM system management mode 1140SMP symmetric multiprocessing 1141SMT simultaneous multithreading 1142SMTP Simple Mail Transfer Protocol 1143SMU system management unit 1144SNMP Simple Network Management Protocol 1145SNR signal-to-noise ratio 1146SOA service oriented architecture 1147SOAP Simple Object Access Protocol 1148SOC system on chip 1149SOF start of frame 1150SOH start of header 1151SOHO small office/home office 1152SOL serial over LAN 1153SP service pack 1154SP stack pointer 1155SPARC scalable processor architecture 1156SPARQL SPARQL Protocol and RDF Query Language 1157SPD security policy database 1158SPD serial presence detect 1159SPDIF Sony/Philips digital interface format 1160SPI serial peripheral interface 1161SPI stateful packet inspection 1162SPMD single process, multiple data 1163SPR special purpose register 1164SPT sectors per track 1165SQA software quality assurance 1166SQL Structured Query Language 1167SRAM static random access memory 1168SRC sample rate conversion 1169SS self-snoop 1170SS stack segment 1171SSB single-sideband modulation 1172SSD solid state drive 1173SSE streaming SIMD extensions 1174SSFDC solid state floppy disc card 1175SSH secure shell 1176SSI server side includes 1177SSID service set identifier 1178SSL secure sockets layer 1179SSP stack smashing protection 1180STC software thermal control 1181STD state transition diagram 1182STP Spanning Tree Protocol 1183STP shielded twisted pair 1184SUS Single Unix Specification 1185SUT system under test 1186SVG scalable vector graphics 1187SVGA Super Video Graphics Array 1188SVM secure virtual machine 1189SVM support vector machine 1190SVR System V Release 1191SWF Shockwave Flash 1192SWIG simplified wrapper [and] interface generator 1193SYR symbol timing recovery 1194TA test assertion 1195TA transmitter address 1196TAI international atomic time 1197TAO track at once 1198TAOCP The Art of Computer Programming 1199TAP Test Anything Protocol 1200TAS test and set 1201TB terabyte 1202TCB trace capture buffer 1203TCB trusted computing base 1204TCC thermal control circuit 1205TCL tool command language 1206TCP Transmission Control Protocol 1207TCQ tagged command queueing 1208TDC time [to] digital converter 1209TDD test driven development 1210TDD time division duplex 1211TDM time division multiplexing 1212TDMA time division multiple access 1213TDOA time difference of arrival 1214TDP thermal design {point,power} 1215TECO Text Editor and Corrector 1216TFT thin film transistor 1217TFTP Trivial File Transfer Protocol 1218TIAS try it and see 1219TIFF tagged image file format 1220TITS try it to see 1221TK temporal key 1222TKIP Temporal Key Integrity Protocol 1223TLA top level aggregator 1224TLB translation lookaside buffer 1225TLD top level domain 1226TLS thread local storage 1227TLS transport layer security 1228TM Turing machine 1229TM thermal monitor 1230TMDS transition minimized differential signaling 1231TMO timeout 1232TOD time of day 1233TOS terms of service 1234TOS trusted operating system 1235TOS type of service 1236TP transaction processing 1237TPI tracks per inch 1238TPM transactions per minute 1239TPM trusted platform module 1240TPR task priority register 1241TPS transactions per second 1242TPS transmission parameters signaling 1243TR task register 1244TR token ring 1245TRL timing recovery loop 1246TRNG true random number generator 1247TS terminal services 1248TS time series 1249TS time stamp 1250TS transport stream 1251TSC time stamp counter 1252TSD time stamp disable 1253TSL test, set, lock 1254TSO time sharing option 1255TSP Time-Stamp Protocol 1256TSP Tunnel Setup Protocol 1257TSP time synchronization protocol 1258TSP traveling salesman problem 1259TSS task state segment 1260TTL time to live 1261TTL transistor-transistor logic 1262TTM translation table maps 1263TTY teletype 1264TUI {terminal,text-based,textual} user interface 1265TX {transmit out,transmitter} 1266TZ time zone 1267UAC user {access,account} control 1268UART universal asynchronous receiver/transmitter 1269UAT user acceptance testing 1270UC uncacheable 1271UCS uniform-cost search 1272UDMA ultra DMA 1273UDO ultra density optical 1274UDP User Datagram Protocol 1275UEFI unified extensible firmware interface 1276UFS Unix File System 1277UGA universal graphics adapter 1278UI unit interval 1279UI user interface 1280UID unique identifier 1281UID user identifier 1282UL upload 1283UMA uniform memory access 1284UMA upper memory area 1285UMB upper memory block 1286UML unified modeling language 1287UMPC ultra-mobile PC 1288UPNP universal plug and play 1289UPS uninterruptible power supply 1290URI uniform resource identifier 1291URL uniform resource locator 1292URN uniform resource name 1293USART universal synchronous/asynchronous receiver/transmitter 1294USB universal serial bus 1295USWC uncacheable speculative write combining 1296UT unit test 1297UTC coordinated universal time 1298UTP unshielded twisted pair 1299UUCP Unix-to-Unix Copy Protocol 1300UUID universally unique identifier 1301UUOC useless use of cat 1302UUT unit under test 1303UX user experience 1304VA vertical alignment 1305VA virtual address 1306VA volt-ampere 1307VAX virtual address extension 1308VB Visual Basic 1309VCA variable-gain amplifier 1310VCC common collector voltage 1311VCF voltage-controlled filter 1312VCM virtual channel memory 1313VCO voltage-controlled oscillator 1314VCS version control system 1315VESA Video Electronics Standards Association 1316VFO variable-frequency oscillator 1317VG volume group 1318VGA Video Graphics Array 1319VHDCI very high density cable interconnect 1320VID voltage level identifier 1321VIPT virtually indexed, physically tagged 1322VIVT virtually indexed, virtually tagged 1323VLAN virtual local area network 1324VLIW very long instruction word 1325VLSI very large scale integration 1326VLSM variable length subnet mask 1327VM virtual {machine,memory} 1328VME virtual mode extension 1329VMX vector multimedia extensions 1330VMX virtual machine extensions 1331VOD video on demand 1332VPN virtual private network 1333VR virtual reality 1334VRAM video random access memory 1335VRM voltage regulator module 1336VRRP Virtual Router Redundancy Protocol 1337W watt 1338W3C World Wide Web Consortium 1339WAN wide area network 1340WAP Wireless Application Protocol 1341WAP wireless access point 1342WDT watchdog timer 1343WEP Wired Equivalent Privacy 1344WFI wait for interrupt 1345WFQ weighted fair queuing 1346WH write hit 1347WIFI wireless fidelity 1348WLAN wireless local area network 1349WM write miss 1350WMI Windows Management Instrumentation 1351WOL Wake-on-LAN 1352WOM Wake-on-Modem 1353WOR Wake-on-Ring 1354WORM write once read many 1355WP WordPerfect 1356WP word processor 1357WP write protect 1358WPA Wi-Fi Protected Access 1359WPA2 Wi-Fi Protected Access II 1360WPS Wi-Fi Protected Setup 1361WRAM window random access memory 1362WS web services 1363WTC write through caching 1364WWAN wireless wide area network 1365WWW world wide web 1366WYSIWYG what you see is what you get 1367XBAR crossbar 1368XDMCP X Display Manager control protocol 1369XER XML encoding rules 1370XGA Extended Graphics Array 1371XIP execute in place 1372XML Extensible Markup Language 1373XOR exclusive or 1374XP extreme programming 1375XSI X/Open System Interface 1376XSL extensible stylesheet language 1377XSS cross site scripting 1378XT extended technology 1379XUL XML user interface language 1380YACC yet another compiler compiler 1381YAWPFAPR you are welcome; please file a problem report 1382YP Yellow Pages 1383YTD year to date 1384ZBR zone bit recording 1385ZFOD zero-filled on demand 1386ZIF zero insertion force 1387ZIFS zero insertion force socket 1388ZMA zone multicast address 1389