acronyms.comp revision 1.134
1$NetBSD: acronyms.comp,v 1.134 2013/05/17 17:43:04 dholland 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 56AQM active queue management 57ARAT always running APIC timer 58ARC adaptive replacement cache 59ARM Advanced RISC Machines 60ARP Address Resolution Protocol 61ARPA Advanced Research Projects Agency 62ARQ automatic repeat request 63ARR address range register 64ARU audio response unit 65AS autonomous system 66ASC advanced smart cache 67ASCII American Standard Code for Information Interchange 68ASD agile software development 69ASE advanced software environment 70ASIC application-specific integrated circuit 71ASK amplitude shif keying 72ASLR address space layout randomization 73ASN autonomous system number 74ASPM active state power management 75ASQ automated software quality 76ASR address space register 77AST abstract syntax tree 78AST asynchronous trap 79AT access time 80AT advanced technology 81ATA advanced technology attachment 82ATAPI advanced technology attachment packet interface 83ATC address translation cache 84ATM asynchronous transfer mode 85ATX advanced technology extended 86AV anti virus 87AVL Adelson-Velsky-Landis 88AVX advanced vector extensions 89BA byte align 90BAL basic assembly language 91BAR base address register 92BBS bulletin board system 93BCC blind carbon copy 94BCD binary coded decimal 95BCR byte counte register 96BCS base configuration space 97BD baud 98BDD binary decision diagram 99BDI bit deinterleave 100BDUF big design up front 101BEDO burst extended data output 102BER basic encoding rules 103BER bit error {rate,ratio} 104BFD binary {file,format} descriptor 105BFKL big fscking kernel lock 106BFS breadth-first search 107BFT binary file transfer 108BGA ball grid array 109BGP Border Gateway Protocol 110BIND Berkeley Internet Name Daemon 111BIOS basic input/output system 112BIST built-in self-test 113BIU bus interface unit 114BKDG BIOS and kernel developer's guide 115BLAS basic linear algebra subprograms 116BLC back light control 117BLOB binary large object 118BM bus master 119BMC baseboard management controller 120BMIC bus master interface controller 121BN boundary neutral 122BNF Backus-Naur form 123BO binary output 124BOF beginning of file 125BOM beginning of message 126BOM byte order mark 127BP base pointer 128BP boot processor 129BPB BIOS parameter block 130BPF Berkeley Packet Filter 131BPI bits per inch 132BPM business process modelling 133BPS bits per second 134BPSK binary phase shift keying 135BQS Berkeley quality software 136BRE basic regular expression 137BS binary sequence 138BSD Berkeley Software Distribution 139BSF bit scan forward 140BSOD blue screen of death 141BSP binary space partition 142BSP bootstrap processor 143BSR bit scan reverse 144BSS block started by symbol 145BT BitTorrent 146BT Bluetooth 147BT bit test 148BTC bit test [and] complement 149BTR bit test [and] reset 150BTS bit test [and] set 151BTS bits per second 152BW bandwidth 153BWM block-write mode 154CA certificate authority 155CAD computer-aided design 156CAM computer assisted manufacturing 157CAM conditional access module 158CAM content addressable memory 159CARP Common Address Redundancy Protocol 160CAS column address strobe 161CAS compare and swap 162CAS computer algebra system 163CASE computer aided software engineering 164CAU control access unit 165CAV constant angular velocity 166CBC cipher block chaining 167CBR constant bit rate 168CC carbon coby 169CCD charge coupled device 170CCI co-channel interferer 171CD cache disable 172CD compact disc 173CDDA compact disc digital audio 174CDMA code division multiple access 175CDRAM cache dynamic random access memory 176CER canonical encoding rules 177CF compact flash 178CFG context-free grammar 179CFG control-flow graph 180CG control gate 181CGA color graphics {adapter,array} 182CGI common gateway interface 183CGN Carrier-Grade NAT 184CHAP Challenge-Handshake Authentication Protocol 185CHS cylinder/head/sector 186CI continuous integration 187CI {common,component} interface 188CIDR Classless Inter-Domain Routing 189CIFS Common Internet File System 190CIL common intermediate language 191CIR carrier-to-interference ratio 192CIS contact image sensor 193CJK Chinese, Japanese, [and] Korean 194CLF common log format 195CLI command line interface 196CLR common language runtime 197CLTT closed loop thermal throttling 198CLUT color look-up table 199CLV constant linear velocity 200CM configuration management 201CMA concert multithread architecture 202CMI control management interface 203CMI control method interface 204CMOS complementary metal-oxide-semiconductor 205CMP chip multi-processing 206CMS content management system 207CMYK cyan magenta yellow black 208CN {common,canonical} name 209CNC computer numerical control 210CNR carrier-to-noise ratio 211COF current operating frequency 212COFDM coded orthogonal frequency division multiplexing 213COFF common object file format 214COM component object model 215COMA cache-only memory architecture 216CORBA common object request broker architecture 217COW copy-on-write 218CP continuous pilot 219CPB core performance boost 220CPE common phase error 221CPG clock pulse generator 222CPL current privilege level 223CPLD complex programmable logic device 224CPS characters per second 225CPT command pass through 226CPU central processing unit 227CR carriage return 228CRC cyclic redundancy check 229CRL carrier recovery loop 230CRLF carriage return line feed 231CRT cathode ray tube 232CS cable select 233CS chip select 234CS code segment 235CS computer science 236CSI channel state information 237CSI common system interface 238CSMA carrier sense multiple access 239CSMA/CA carrier sense multiple access with collision avoidance 240CSMA/CD carrier sense multiple access with collision detection 241CSR control [and] status registers 242CSS cascading style sheets 243CSV comma-separated values 244CTM close to metal 245CTS clear to send 246CUA common user access 247CUT coordinated universal time 248CV control voltage 249CVS Concurrent Versions System 250DA destination address 251DAA distributed application architecture 252DAB digital audio broadcasting 253DAC digital [to] analog converter 254DAC discretionary access control 255DAD duplicate address detection 256DAO disk at once 257DAP Directory Access Protocol 258DAT digital audio tape 259DAT dynamic acceleration technology 260DB database 261DBA dynamic bandwidth allocation 262DBB data bus buffer 263DBC design by contract 264DBL dynamic buffer limiting 265DBMS database management system 266DBS database server 267DC direct current 268DCC Direct Client-to-Client 269DCC direct cable connect 270DCD data carrier detect 271DCE data control equipment 272DCE distributed computing environment 273DCOM distributed component object model 274DCOP Desktop COmmunication Protocol 275DCS data collection systems 276DCT discrete cosine transform 277DCU data cache unit 278DDC display data channel 279DDE dynamic data exchange 280DDK device driver kit 281DDL data description language 282DDR double data rate 283DDS direct digital sound 284DDWG digital display working group 285DE debugging extensions 286DE desktop environment 287DEA data encryption algorithm 288DEK data encryption key 289DEP data execution prevention 290DER distinguished encoding rules 291DES Data Encryption Standard 292DF don't fragment 293DFA deterministic finite automaton 294DFC data flow control 295DFS depth first search 296DFS distributed file system 297DFT diagnostic function test 298DFT discrete Fourier transform 299DGL data generation language 300DH Diffie-Hellman 301DHCP Dynamic Host Configuration Protocol 302DIFS distributed inter-frame space 303DIMM dual inline memory module 304DIRT design in real time 305DL diode logic 306DL download 307DLE data link escape 308DLL dynamic link library 309DMA direct memory access 310DMI desktop management interface 311DMS document management system 312DMT discrete multitone modulation 313DNARD Digital network appliance reference design 314DNS Domain Name System 315DOE distributed object environment 316DOF data over fibre 317DOM document object model 318DOS denial of service 319DOS disk operating system 320DPC deferred procedure call 321DPCM differential pulse code modulation 322DPD dead peer detection 323DPI deep packet inspection 324DPI dots per inch 325DPL descriptor privilege level 326DPST display power savings technology 327DRAM dynamic random access memory 328DRI direct rendering infrastructure 329DRM digital rights management 330DRRS display refresh rate switching 331DS debug store 332DSB double-sideband modulation 333DSDT differentiated system descriptor table 334DSL digital subscriber line 335DSL domain specific language 336DSLAM digital subscriber line access multiplexer 337DSN delivery status notification 338DSO dynamic shared object 339DSP digital signal processor 340DSSS direct sequence spread spectrum 341DTD document type definition 342DTE data terminal equipment 343DTE dumb terminal emulator 344DTL diode-transistor logic 345DTS digital thermal sensor 346DUT device under test 347DVB digital video broadcasting 348DVCS distributed version control system 349DVD digital versatile disc 350DVFS dynamic voltage and frequency scaling 351DVI digital visual interface 352DVR digital video recorder 353E-XER extended XML encoding rules 354EABI embedded-application binary interface 355EAP Extensible Authentication Protocol 356EBR extended boot record 357ECC error correction code 358ECL emitter-coupled logic 359ECN explicit congestion notification 360ECP enhanced capability port 361ECS enhanced chip set 362ECS extended configuration space 363EDAT enhanced dynamic acceleration technology 364EDGE explicit data graph execution 365EDID extended display identification data 366EDO extended data out 367EDS electronical data sheet 368EEPROM electrically erasable programmable read only memory 369EFI extensible firmware interface 370EFL emitter follower logic 371EFM eight to fourteen modulation 372EGA enhanced graphics {adapter,array} 373EGP exterior gateway protocol 374EH extension header 375EIDE enchanced IDE 376EISA extended industry standard architecture 377ELF executable and linking format 378ELS entry level system 379EMI electro-magnetic interference 380EMP electro-magnetic pulse 381EMR electro-magnetic radiation 382EOF end of file 383EOI end of interrupt 384EOL end of line 385EOT end of transmission 386EPIC explicitly parallel instruction computing 387EPP enhanced parallel port 388EPRML extended partial response, maximum likelihood 389EPROM erasable programmable read only memory 390ERD emergency recovery disk 391ERE extended regular expression 392ESDRAM enhanced synchronous dynamic random access memory 393ESS electronic switching system 394EST enhanced speedstep 395ETL extract, transform, load 396EU execution unit 397EULA end user license agreement 398FAT file allocation table 399FBRAM frame buffer random access memory 400FCL fiber channel loop 401FCS frame check sequence 402FDC floppy disk controller 403FDD floppy disk drive 404FDDI fiber distributed data interface 405FDE full disk encryption 406FEA finite element analysis 407FEC forward error correction 408FET field-effect transistor 409FFH functional fixed hardware 410FFI foreign function interface 411FFM focus follows mouse 412FFS Fast File System 413FFS find first set 414FFT fast Fourier transform 415FG floating gate 416FHSS frequency hop spread spectrum 417FID frequency identifier 418FIFO first in, first out 419FILO first in, last out 420FIR fast infrared 421FLOPS floating [point] operations per second 422FLOSS free/libre/open source software 423FM frequency modulation 424FMR false match rate 425FOSS free/open source software 426FPGA field programmable gate array 427FPM fast page mode 428FPR floating point register 429FPU floating point unit 430FQDN fully qualified domain name 431FRR false rejection rate 432FRU field replaceable unit 433FS file system 434FSB front side bus 435FSCK file system check 436FSF Free Software Foundation 437FSK frequency shift keying 438FSM finite-state machine 439FTA fault tree analysis 440FTL flash translation layer 441FTP File Transfer Protocol 442FTPS File Transfer Protocol Secure 443FUS fast user switching 444FWH firmware hub 445FWS folding white space 446GAL generic array logic 447GAS generic address structure 448GC garbage collector 449GCR group-coded recording 450GDT global descriptor table 451GEM graphics environment manager 452GEM graphics execution manager 453GENA general event notification architecture 454GHC Glasgow Haskell compiler 455GID group identifier 456GIF graphics interchange format 457GMCH graphics and memory controller hub 458GNU GNU's Not Unix 459GOT global offset table 460GPE general purpose event 461GPF general protection fault 462GPG GNU Privacy Guard 463GPL [GNU] General Public License 464GPR general purpose register 465GPS generalized processor sharing 466GPT GUID partition table 467GPU graphics processing unit 468GR golden ratio 469GRE generic routing encapsulation 470GSI global system interrupt 471GUI graphical user interface 472GUID globally unique identifier 473HA high availability 474HAL hardware abstraction layer 475HAT hashed array tree 476HBA host bus adapter 477HCF halt and catch fire 478HCI host controller interface 479HCI human-computer interaction 480HCL hardware compatibility list 481HDCP high-bandwidth digital content protection 482HDD hard disk drive 483HDL hardware description language 484HDTV high-definition television 485HF high frequency 486HFM highest frequency mode 487HID human interface device 488HLL high-level language 489HMA high memory area 490HMI human-machine interface 491HOOD hierarchical object oriented design 492HP Hewlett-Packard 493HPC high performance computing 494HPET high precision event timer 495HT hyper-threading 496HTC hardware thermal control 497HTCC high temperature co-fired ceramic 498HTML HyperText Markup Language 499HTT hyper-threading technology 500HTTP Hypertext Transfer Protocol 501HTTPS Hypertext Transfer Protocol Secure 502HVM hardware virtual machine 503HZ Hertz 504I2O intelligent input/output 505IA information assurance 506IANA Internet Assigned Numbers Authority 507IBC iterated block cipher 508IBM International Business Machines 509IBS instruction based sampling 510IC integrated circuit 511ICA independent computer architecture 512ICB Internet Citizen's Band 513ICE in-circuit emulator 514ICE internal compiler error 515ICH I/O controller hub 516ICMP Internet Control Message Protocol 517ICT information and communications technology 518ICW initialization command word 519IDA Intel dynamic acceleration 520IDE integrated development environment 521IDE integrated drive electronics 522IDPS intrusion detection [and] prevention system 523IDRP inter-domain routing protocol 524IDS intrusion detection system 525IDT interrupt descriptor table 526IE Internet Explorer 527IEC International Electrotechnical Commission 528IEEE Institute of Electrical and Electronics Engineers 529IESG Internet Engineering Steering Group 530IETF Internet Engineering Task Force 531IF intermediate frequency 532IFCM isochronous flow control mode 533IGD Internet gateway device 534IGMP Internet Group Management Protocol 535IGP interior gateway protocol 536IHV independent hardware vendor 537IKE Internet key exchange 538ILM internal loopback mode 539ILP instruction level parallelism 540IM instant messaging 541IMAP Internet Message Access Protocol 542IMC integrated memory controller 543IMCR interrupt mode configuration register 544IMR interrupt mask register 545IMS information management system 546INCITS InterNational Committee for Information Technology Standards 547IO input/output 548IOCTL input/output control 549IOMMU input/output memory management unit 550IP Internet Protocol 551IP intellectual property 552IPC interprocess communication 553IPE integrated programming environment 554IPI interprocessor interrupt 555IPNG Internet Protocol, Next Generation 556IPS in-plane switching 557IPS intrusion prevention system 558IPSEC Internet Protocol Security 559IRC Internet Relay Chat 560IRDA infrared data association 561IRQ interrupt request 562IRQL interrupt request level 563IRR interrupt request register 564IRTF Internet Research Task Force 565IS information system 566ISA industry standard architecture 567ISA instruction set architecture 568ISDN integrated services digital network 569ISI inter-symbol interference 570ISM industrial, scientific, [and] medical 571ISN initial serial number 572ISO International Standards Organization 573ISOC Internet Society 574ISP Internet service provider 575ISR in-service register 576ISR interrupt service routine 577IST interrupt stack table 578ISV independent software vendor 579IT information technology 580ITB Intel Turbo Boost 581IV initialization vector 582IVT interrupt vector table 583JBOD just a bunch of disks 584JFET junction [gate] field-effect transistor 585JIT just in time 586JPEG Joint Photographic Experts Group 587JRE Java Runtime Environment 588JTAG joint test action group 589KB keyboard 590KB kilobyte 591KBD keyboard 592KBD kilobaud 593KLOC thousand lines of code 594KMS kernel-mode setting 595KPI kernel programming interface 596KVA kernel virtual address 597KVM kernel virtual memory 598KVM keyboard, video, [and] mouse 599LAMP Linux Apache MySQL {Perl,PHP,Python} 600LAN local area network 601LAPIC local advanced programmable interrupt controller 602LAR load access rights 603LBA logical block addressing 604LBS location-based service 605LCD liquid crystal display 606LCP link control protocol 607LDA local delivery agent 608LDAP Lightweight Directory Access Protocol 609LDR light-dependent resistor 610LDT local descriptor table 611LE logical extent 612LED light emitting diode 613LER label edge router 614LF line feed 615LF low frequency 616LFM lowest frequency mode 617LFN long file names 618LFO low-frequency oscillation 619LFS log-structured file system 620LFU least frequently used 621LHP loop heat pipe 622LIFO last in, first out 623LILO LInux LOader 624LILO last in, last out 625LINT local interrupt 626LIR local Internet registry 627LKM {Linux,loadable} kernel module 628LKML Linux kernel mailing list 629LL load linked 630LL/SC load linked/store conditional 631LLC logical link control 632LLF low level format 633LLMNR link-local multicast name resolution 634LLVM Low Level Virtual Machine 635LM long mode 636LMM link management mode 637LNO loop nest optimization 638LOC lines of code 639LPC low pin count 640LPS local positioning system 641LRC longitudinal redundancy check 642LRM left-to-right mark 643LRO left-to-right override 644LRU least recently used 645LSB Linux standards base 646LSB least significant {bit,byte} 647LSI large scale integration 648LSL load segment limit 649LSN Large Scale NAT 650LSR label switch router 651LTCC low temperature co-fired ceramic 652LTR left to right 653LTR load task register 654LUN logical unit number 655LV logical volume 656LVM logical volume management 657LVT local vector table 658LWP light-weight process 659LZW Lempel Ziv Welch 660MAC mandatory access control 661MAC medium access control 662MADT multiple APIC descriptor table 663MB megabyte 664MBR master boot record 665MBS megabits per second 666MC memory controller 667MCA machine check architecture 668MCC multiversion concurrency control 669MCE machine check exception 670MCGA multicolor graphics adapter 671MCH memory controller hub 672MCM multi-chip module 673MCQ memory controlled queue 674MD machine-dependent 675MDA mail delivery agent 676MDA monochrome display adapter 677MDRAM multibank dynamic random access memory 678MESI modified, exclusive, shared, invalid 679MFC merge from current 680MFM modified frequency modulation 681MI machine-independent 682MIB management information base 683MID mobile Internet device 684MIDI musical instrument digital interface 685MIF management information format 686MIMD multiple instruction, multiple data 687MIME Multipurpose Internet Mail Extensions 688MIMO multiple input multiple output 689MIPS million instructions per second 690MISD multiple instruction, single data 691MIT Massachusetts Institute of Technology 692ML machine language 693ML machine learning 694ML mailing list 695ML markup language 696ML maximum likelihood 697MLC multi-level cell 698MLHP micro loop heat pipe 699MMIC monolithic microwave integrated circuit 700MMIO memory mapped input/output 701MMU memory management unit 702MMX matrix math extension 703MMX multimedia extension 704MMX multiple math extension 705MO magneto-optical 706MOESI modified, owned, exclusive, shared, invalid 707MOF maximum operating frequency 708MOSFET metal-oxide-semiconductor field-effect transistor 709MOSI modified, owned, shared, invalid 710MP multi-platform 711MP multiplayer 712MP {multiprocessing,multiprocessor} 713MPEG moving picture experts group 714MPI message passing interface 715MPLS Multiprotocol Label Switching 716MPP massively parallel processor 717MPS memory pool system 718MPS multiprocessor specification 719MR modem ready 720MRU most recently used 721MS Microsoft 722MSB most significant {bit,byte} 723MSE mean square error 724MSF minutes seconds frames 725MSI message signaled interrupt 726MSI modified, shared, invalid 727MSR machine state register 728MSS maximum segment size 729MT machine translation 730MTA mail transfer agent 731MTBF mean time between failures 732MTRR memory type range register 733MTTF mean time to failure 734MTU maximum transmission unit 735MUA mail user agent 736MUD multi-user domain 737MVCC multiversion concurrency control 738MWE module width encoding 739MX mail exchange 740NACK negative acknowledgement 741NAN not a number 742NAPT Network Address Port Translation 743NAS network attached storage 744NAT network address translation 745NAV network allocation vector 746NC numerical control 747NCO numerically-controlled oscillator 748NCP Network Control Protocol 749NCQ native command queuing 750ND neighbor discovery 751NE numeric error 752NFA nondeterministic finite automaton 753NFS network file system 754NIA next instruction address 755NIC network interface card 756NIDS network intrusion detection system 757NIP network interface protocol 758NIPS network intrusion prevention system 759NIS network information service 760NLS native language support 761NMI non-maskable interrupt 762NNTP Network News Transfer Protocol 763NOP no operation 764NP nondeterministic polynomial time 765NRZ non-return to zero 766NSA National Security Agency 767NTM non-deterministic Turing machine 768NTP Network Time Protocol 769NUMA non-uniform memory access 770NVRAM non-volatile random access memory 771NW not write-through 772NX no execute 773OAEP optimal asymmetric encryption padding 774OBO off by one 775OBOE off by one error 776OCL object constraint language 777OCR optical character recognition 778ODCM on-demand clock modulation 779ODT on-die termination 780OEM original equipment manufacturer 781OFDM orthogonal frequency division multiplexing 782OFET organic field-effect transistor 783OLE object linking and embedding 784ONFI open nand flash interface 785OO OpenOffice 786OO object oriented 787OOB out of band 788OOE out of order execution 789OOM out of memory 790OOO OpenOffice.org 791OOP object oriented programming 792OOSE object oriented software engineering 793OPM operations per minute 794OPS operations per second 795OQL object query language 796ORM object-relational mapping 797OS operating system 798OSD open source definition 799OSF open software foundation 800OSI Open Source Initiative 801OSI open systems interconnection 802OSPF open shortest path first 803OSPM OS power management 804OSS open sound system 805OSS open source software 806OSVW operating system visible workarounds 807OTP one time password 808OTP open telecom platform 809OU organizational unit 810OUI organizationally unique identifier 811OWL Web Ontology Language 812P2P PCI to PCI 813P2P peer to peer 814PA phase accumulator 815PA physical address 816PAC phase-amplitude converter 817PAE physical address extension 818PAL phase alternating line 819PAL programmable array logic 820PAM pluggable authentication modules 821PAM pulse amplitude modulation 822PAP password authentication protocol 823PAT page attribute table 824PAT port address translation 825PATA parallel ATA 826PAX portable archive exchange 827PBE pending break encoding 828PBE programming by example 829PC personal computer 830PC program counter 831PCB printed circuit board 832PCC Portable C Compiler 833PCD page-level cache disable 834PCE performance-monitor counter enable 835PCI peripheral component interconnect 836PCM phase change memory 837PCM pulse code modulation 838PCMCIA Personal Computer Memory Card International Association 839PD public domain 840PDA personal digital assistant 841PDA pushdown automaton 842PDAG propositional directed acyclic graph 843PDB power distribution board 844PDF portable document format 845PDM pulse-duration modulation 846PDN pull-down network 847PDP page descriptor page 848PDS product data sheet 849PDU protocol data unit 850PE protection enable 851PECI platform environment control interface 852PEP protocol extension protocol 853PER packed encoding rules 854PFS perfect forward secrecy 855PGAS partitioned global address space 856PGE page global enable 857PGP Pretty Good Privacy 858PHB PCI host bridge 859PHP PHP: Hypertext Preprocessor 860PIC position independent code 861PIC programmable interrupt controller 862PID process id 863PIE position independent executable 864PIM personal information manager 865PIM platform-independent model 866PIO programmed input/output 867PIPT physically indexed, physically tagged 868PIQ prefetch input queue 869PIT programmable interrupt timer 870PIV personal identity verification 871PKCS public-key cryptography standards 872PKI public key infrastructure 873PLC programmable logic controller 874PLD programmable logic device 875PLL phase locked loop 876PLRU pseudo LRU 877PLTM package level thermal management 878PM power management 879PM {phase,pulse} modulation 880PME power management event 881PMI platform management interrupt 882PMIO port-mapped input/output 883PMT photo-multiplier tube 884PMU power management unit 885PNG portable network graphics 886PNP plug and play 887POE power over ethernet 888POF probability of failure 889POP Post Office Protocol 890POP power on password 891POSIX Portable Operating System Interface [for Unix] 892POST power on self test 893POTS plain old telephone system 894PP pair programming 895PPB PCI [to] PCI bridge 896PPC PowerPC 897PPI pixels per inch 898PPM pages per minute 899PPP Point-to-Point Protocol 900PPPOA Point-to-Point Protocol over ATM 901PPPOE Point-to-Point Protocol over Ethernet 902PPU physics processing unit 903PRBS pseudo-random bit sequence 904PRML partial response, maximum likelihood 905PRN pseudo random {noise,number} 906PRNG pseudo random number generator 907PROM programmable read only memory 908PSD power spectral density 909PSE page size extensions 910PSK phase shift keying 911PSK pre-shared key 912PSTN public switched telephone network 913PSW program status word 914PTE page table entry 915PTLA pseudo top level aggregator 916PTP page table page 917PTV perceived target value 918PU processing unit 919PUN physical unit number 920PV physical volume 921PVG physical volume group 922PVI protected-mode virtual interrupt 923PWM pulse width modulation 924PXE preboot execution environment 925QA quality assurance 926QAM quadrature amplitude modulation 927QAM quality assurance management 928QBE query by example 929QC quality control 930QDI quasi delay insensitive 931QOS quality of service 932RA receiver address 933RA remote assistance 934RA resource affinity 935RA router advertisement 936RAD rapid application development 937RAID redundant array of inexpensive disks 938RAM random access memory 939RAS remote access service 940RAS restartable atomic sequence 941RAS row address strobe 942RBF radial basis function 943RBT red-black tree 944RC release candidate 945RC remote control 946RCS Revision Control System 947RCS revision control system 948RCU read, copy, update 949RDF resource description format 950RDM relational data model 951RDMA remote direct memory access 952RE regular expression 953REST representational state transfer 954RF radio frequency 955RFI radio frequency interference 956RFO request for ownership 957RGB red green blue 958RH read hit 959RHL Red Hat Linux 960RIB routing information base 961RIFF Resource Interchange File Format 962RIP Routing Information Protocol 963RIR regional Internet registry 964RISC reduced instruction set computing 965RKM ROM Kernel Manual 966RLE run length encoding 967RLL run length limited 968RLO right-to-left override 969RM read miss 970RMI remote method invocation 971RMPM rapid memory power management 972RMS root mean square 973RMW read, modify, write 974RNG random number generator 975ROM read only memory 976RPC remote procedure call 977RPL requested privilege level 978RPM revolutions per minute 979RR random replacement 980RR round robin 981RS relay station 982RSA Rivest, Shamir, [and] Adleman 983RSIP Realm Specific IP 984RSS really simple syndication 985RSS residual sum of squares 986RT real time 987RTC real time clock 988RTC real time computing 989RTF rich text format 990RTL resistor-transistor logic 991RTOS real time operating system 992RTS request to send 993RTT round time trip 994RUP rational unified process 995RWM read-write memory 996RX {receive,receiver} 997S/PDIF Sony/Philips Digital Interface Format 998SA security advisory 999SA security association 1000SA source address 1001SA structured analysis 1002SAAS software as a service 1003SACD super audio compact disc 1004SAD security association database 1005SAL system abstraction layer 1006SAM serial access memory 1007SAM sum addressed memory 1008SAN storage area network 1009SAPIC streamlined advanced programmable interrupt controller 1010SASD structured analysis, structured design 1011SASI Shugart Associates System Interface 1012SASL simple authentication [and] security layer 1013SATA serial advanced technology attachment 1014SB sound blaster 1015SBU standard build unit 1016SC store conditional 1017SCA source code analyzer 1018SCADA supervisory control and data acquisition 1019SCC single chip cloud 1020SCC source code control 1021SCCS Source Code Control System 1022SCI scalable coherent interface 1023SCI system control interrupt 1024SCM software configuration management 1025SCM source code management 1026SCP secure copy 1027SCSI Small Computer System Interface 1028SCTP Stream Control Transmission Protocol 1029SDI symbol deinterleave 1030SDK software development kit 1031SDL Simple Declarative Language 1032SDRAM synchronous dynamic random access memory 1033SDT syntax-directed translation 1034SEGV segmentation violation 1035SEO search engine optimization 1036SFC sequential function chart 1037SFI simple firmware interface 1038SFTP SSH File Transfer Protocol 1039SFTP Serial File Transfer Protocol 1040SFTP Simple File Transfer Protocol 1041SGRAM synchronous graphics random access memory 1042SIFS short inter-frame space 1043SIMD single instruction, multiple data 1044SIMM single inline memory module 1045SIP Session Initiation Protocol 1046SIR signal-to-interference ratio 1047SIR slow infrared 1048SISD single instruction, single data 1049SLC single-level cell 1050SLDRAM synchronous-link dynamic random access memory 1051SLI scalable link interface 1052SLI scan-line interleave 1053SLOC source lines of code 1054SLRU segmented LRU 1055SMA smart memory access 1056SMAF system management action field 1057SMART self-monitoring analysis and reporting technology 1058SMBIOS system management BIOS 1059SMC system management controller 1060SMI structure of management information 1061SMI system management interrupt 1062SMM system management mode 1063SMP symmetric multiprocessing 1064SMT simultaneous multithreading 1065SMTP Simple Mail Transfer Protocol 1066SMU system management unit 1067SNMP Simple Network Management Protocol 1068SNR signal-to-noise ratio 1069SOA service oriented architecture 1070SOAP Simple Object Access Protocol 1071SOC system on chip 1072SOF start of frame 1073SOHO small office/home office 1074SOL serial over LAN 1075SP service pack 1076SP stack pointer 1077SPARC scalable processor architecture 1078SPARQL SPARQL Protocol and RDF Query Language 1079SPD security policy database 1080SPD serial presence detect 1081SPDIF Sony/Philips digital interface format 1082SPI serial peripheral interface 1083SPI stateful packet inspection 1084SPMD single process, multiple data 1085SPR special purpose register 1086SPT sectors per track 1087SQA software quality assurance 1088SQL Structured Query Language 1089SRAM static random access memory 1090SRC sample rate conversion 1091SS self-snoop 1092SS stack segment 1093SSB single-sideband modulation 1094SSD solid state drive 1095SSE streaming SIMD extensions 1096SSFDC solid state floppy disc card 1097SSH secure shell 1098SSI server side includes 1099SSL secure sockets layer 1100SSP stack smashing protection 1101STC software thermal control 1102STD state transition diagram 1103STP Spanning Tree Protocol 1104STP shielded twisted pair 1105SUS Single Unix Specification 1106SUT system under test 1107SVG scalable vector graphics 1108SVGA super video graphics {adapter,array} 1109SVM secure virtual machine 1110SVM support vector machine 1111SVR System V Release 1112SWF Shockwave Flash 1113SWIG simplified wrapper [and] interface generator 1114SYR symbol timing recovery 1115TA test assertion 1116TA transmitter address 1117TAI international atomic time 1118TAO track at once 1119TAOCP The Art of Computer Programming 1120TAP Test Anything Protocol 1121TAS test and set 1122TB terabyte 1123TCB trace capture buffer 1124TCB trusted computing base 1125TCC thermal control circuit 1126TCL tool command language 1127TCP Transmission Control Protocol 1128TCQ tagged command queueing 1129TDC time [to] digital converter 1130TDD test driven development 1131TDD time division duplex 1132TDM time division multiplexing 1133TDMA time division multiple access 1134TDOA time difference of arrival 1135TDP thermal design {point,power} 1136TECO Text Editor and Corrector 1137TFT thin film transistor 1138TFTP Trivial File Transfer Protocol 1139TIAS try it and see 1140TIFF tagged image file format 1141TITS try it to see 1142TK temporal key 1143TLA top level aggregator 1144TLB transition lookaside buffer 1145TLD top level domain 1146TLS thread local storage 1147TLS transport layer security 1148TM Turing machine 1149TM thermal monitor 1150TMDS transition minimized differential signaling 1151TMO timeout 1152TOD time of day 1153TOS terms of service 1154TOS trusted operating system 1155TOS type of service 1156TP transaction processing 1157TPM transactions per minute 1158TPM trusted platform module 1159TPR task priority register 1160TPS transmission parameters signaling 1161TR task register 1162TR token ring 1163TRL timing recovery loop 1164TRNG true random number generator 1165TS terminal services 1166TS time series 1167TS time stamp 1168TS transport stream 1169TSC time stamp counter 1170TSD time stamp disable 1171TSL test, set, lock 1172TSO time sharing option 1173TSP Time-Stamp Protocol 1174TSP Tunnel Setup Protocol 1175TSP time synchronization protocol 1176TSP traveling salesman problem 1177TSS task state segment 1178TTL time to live 1179TTL transistor-transistor logic 1180TTM translation table maps 1181TTY teletype 1182TUI {terminal,text-based,textual} user interface 1183TX {transmit out,transmitter} 1184TZ time zone 1185UAC user {access,account} control 1186UART universal asynchronous receiver/transmitter 1187UAT user acceptance testing 1188UC uncacheable 1189UCS uniform-cost search 1190UDMA ultra DMA 1191UDO ultra density optical 1192UDP User Datagram Protocol 1193UFS Unix File System 1194UI unit interval 1195UI user interface 1196UID unique identifier 1197UID user identifier 1198UL upload 1199UMA uniform memory access 1200UMA upper memory area 1201UMB upper memory block 1202UML unified modeling language 1203UMPC ultra-mobile PC 1204UPNP universal plug and play 1205UPS uninterruptible power supply 1206URI uniform resource identifier 1207URL uniform resource locator 1208URN uniform resource name 1209USART universal synchronous/asynchronous receiver/transmitter 1210USB universal serial bus 1211USWC uncacheable speculative write combining 1212UT unit test 1213UTC coordinated universal time 1214UTP unshielded twisted pair 1215UUCP Unix-to-Unix Copy Protocol 1216UUID universally unique identifier 1217UUOC useless use of cat 1218UUT unit under test 1219UX user experience 1220VA vertical alignment 1221VA virtual address 1222VA volt-ampere 1223VAX virtual address extension 1224VB Visual Basic 1225VCA variable-gain amplifier 1226VCC common collector voltage 1227VCF voltage-controlled filter 1228VCM virtual channel memory 1229VCO voltage-controlled oscillator 1230VCS version control system 1231VESA video electronics standards association 1232VFO variable-frequency oscillator 1233VG volume group 1234VGA video graphics {adapter,array} 1235VHDCI very high density cable interconnect 1236VID voltage level identifier 1237VIPT virtually indexed, physically tagged 1238VIVT virtually indexed, virtually tagged 1239VLAN virtual local area network 1240VLIW very long instruction word 1241VLSI very large scale integration 1242VLSM variable length subnet mask 1243VM virtual {machine,memory} 1244VME virtual mode extension 1245VMX vector multimedia extensions 1246VMX virtual machine extensions 1247VOD video on demand 1248VPN virtual private network 1249VR virtual reality 1250VRAM video random access memory 1251VRM voltage regulator module 1252VRRP Virtual Router Redundancy Protocol 1253W watt 1254W3C World Wide Web Consortium 1255WAN wide area network 1256WAP Wireless Application Protocol 1257WDT watchdog timer 1258WEP Wired Equivalent Privacy 1259WFI wait for interrupt 1260WFQ weighted fair queuing 1261WH write hit 1262WIFI wireless fidelity 1263WLAN wireless local area network 1264WM write miss 1265WMI Windows Management Instrumentation 1266WOL Wake-on-LAN 1267WOM Wake-on-Modem 1268WOR Wake-on-Ring 1269WORM write once read many 1270WP WordPerfect 1271WP word processor 1272WP write protect 1273WPA wi-fi protected access 1274WRAM window random access memory 1275WS web services 1276WTC write through caching 1277WWAN wireless wide area network 1278WWW world wide web 1279WYSIWYG what you see is what you get 1280XBAR crossbar 1281XER XML encoding rules 1282XGA extended graphics {adapter,array} 1283XIP execute in place 1284XML Extensible Markup Language 1285XOR exclusive or 1286XP extreme programming 1287XSL extensible stylesheet language 1288XSS cross site scripting 1289XT extended technology 1290XUL XML user interface language 1291YACC yet another compiler compiler 1292YAWPFAPR you are welcome; please file a problem report 1293YP Yellow Pages 1294YTD year to date 1295ZBR zone bit recording 1296ZFOD zero-filled on demand 1297ZIF zero insertion force 1298ZIFS zero insertion force socket 1299ZMA zone multicast address 1300