acronyms.comp revision 1.128
1$NetBSD: acronyms.comp,v 1.128 2012/09/06 15:24:26 ginsbach Exp $ 2 33WHS three-way handshake 48VSB 8-state vestigial side band modulation 5AA anti-aliasing 6AAA authentication, authorization, accounting 7AAT average access time 8ABI application binary interface 9ABR available bit rate 10AC alternating current 11ACI adjacent channel interferer 12ACID atomicity, consistency, isolation, durability 13ACK acknowledgement 14ACK Amsterdam compiler kit 15ACL access control list 16ACL active current loop 17ACP auxillary control {program, process} 18ACPI advanced configuration and power interface 19ACS access control set 20ACU automatic calling unit 21ADB Apple desktop bus 22ADC analog [to] digital converter 23ADD acronym driven development 24ADP automatic data processing 25ADT abstract data type 26ADO active data objects 27ADP automatic data processing 28ADPCM adaptive differential pulse code modulation 29ADS alternate data stream 30ADSL asymmetric digital subscriber line 31AES Advanced Encryption Standard 32AFS Andrew File System 33AGC automatic gain control 34AGP accelerated graphics port 35AI analog input 36AI artificial intelligence 37AL access list 38AL active link 39ALE address latch enable 40ALS ambient light sensor 41ALU arithmetic and logical unit 42AM access method 43AM amplitude modulation 44AM alignment mask 45AMI alternate mark inversion 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 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 73ASPM active state power management 74ASN autonomous system number 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 89AWK Aho, Werner, and Kernighan 90BA byte align 91BAL basic assembly language 92BAR base address register 93BBS bulletin board system 94BCC blind carbon copy 95BCD binary coded decimal 96BCR byte counte register 97BCS base configuration space 98BD baud 99BDD binary decision diagram 100BDI bit deinterleave 101BDUF big design up front 102BEDO burst extended data output 103BER basic encoding rules 104BER bit error {rate, ratio} 105BFD binary {file, format} descriptor 106BFKL big fscking kernel lock 107BFS breadth-first search 108BFT binary file transfer 109BGA ball grid array 110BGP border gateway protocol 111BIND Berkeley Internet Name Daemon 112BIOS basic input/output system 113BIST built-in self-test 114BIU bus interface unit 115BKDG BIOS and kernel developer's guide 116BLAS basic linear algebra subprograms 117BLOB binary large object 118BLC back light control 119BM bus master 120BMC baseboard management controller 121BMIC bus master interface controller 122BN boundary neutral 123BNF Backus-Naur form 124BO binary output 125BOF beginning of file 126BOM byte order mark 127BOM beginning of message 128BP base pointer 129BP boot processor 130BPB BIOS parameter block 131BPF Berkeley packet filter 132BPI bits per inch 133BPM business process modelling 134BPS bits per second 135BPSK binary phase shift keying 136BQS Berkeley quality software 137BRE basic regular expression 138BS binary sequence 139BSD Berkeley software distribution 140BSF bit scan forward 141BSOD blue screen of death 142BSP binary space partition 143BSP bootstrap processor 144BSR bit scan reverse 145BSS block started by symbol 146BT Bluetooth 147BT BitTorrent 148BT bit test 149BTC bit test [and] complement 150BTR bit test [and] reset 151BTS bit test [and] set 152BTS bits per second 153BW bandwidth 154BWM block-write mode 155CA certificate authority 156CAD computer-aided design 157CAM computer assisted manufacturing 158CAM content addressable memory 159CAM conditional access module 160CARP common address redundancy protocol 161CAS (atomic) compare and swap 162CAS computer algebra system 163CAS column address strobe 164CASE computer aided software engineering 165CAU control access unit 166CAV constant angular velocity (as opposed to CLV) 167CBC cipher block chaining 168CBR constant bit rate 169CCD charge coupled device 170CCI co-channel interferer 171CC carbon coby 172CD compact disc 173CD cache disable 174CDDA compact disc digital audio 175CDMA code division multiple access 176CDRAM cache dynamic random access memory 177CER canonical encoding rules 178CF compact flash 179CFG context-free grammar 180CFG control-flow graph 181CG control gate 182CGA color graphics {array,adapter} 183CGI common gateway interface 184CHAP challenge-handshake authentication protocol 185CHS cylinder/head/sector 186CI {common, component} interface 187CI continuous integration 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 (as opposed to CAV) 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 computer science 233CS cable select 234CS chip select 235CS code segment 236CSI common system interface 237CSI channel state information 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 discretionary access control 254DAC digital [to] analog converter 255DAO disk at once 256DAP directory access protocol 257DAT digital audio tape 258DAT dynamic acceleration technology 259DB database 260DBA dynamic bandwidth allocation 261DBB data bus buffer 262DBC design by contract 263DBL dynamic buffer limiting 264DBMS database management system 265DBS database server 266DC direct current 267DCC direct client [to] client 268DCC direct cable connect 269DCD data carrier detect 270DCE data control equipment 271DCE distributed computing environment 272DCOM distributed component object model 273DCOP desktop communication protocol 274DCS data collection systems 275DCT discrete cosine transform 276DCU data cache unit 277DDC display data channel 278DDE dynamic data exchange 279DDK device driver kit 280DDL data description language 281DDR double data rate 282DDS direct digital sound 283DDWG digital display working group 284DE desktop environment 285DE debugging extensions 286DEA data encryption algorithm 287DEK data encryption key 288DEP data execution prevention 289DER distinguished encoding rules 290DES Data Encryption Standard 291DF don't fragment 292DFA deterministic finite automaton 293DFC data flow control 294DFS depth first search 295DFS distributed file system 296DFT discrete Fourier transform 297DFT diagnostic function test 298DGL data generation language 299DH Diffie-Hellman 300DHCP dynamic host configuration protocol 301DIFS distributed inter-frame space 302DIMM dual inline memory module 303DIRT design in real time 304DL download 305DL diode logic 306DLE data link escape 307DLL dynamic link library 308DMA direct memory access 309DMI desktop management interface 310DMS document management system 311DMT discrete multitone modulation 312DNARD Digital network appliance reference design 313DNS domain name system 314DOE distributed object environment 315DOF data over fibre 316DOM document object model 317DOS denial of service 318DOS disk operating system 319DPC deferred procedure call 320DPCM differential pulse code modulation 321DPD dead peer detection 322DPI dots per inch 323DPI deep packet inspection 324DPL descriptor privilege level 325DPST display power savings technology 326DRAM dynamic random access memory 327DRI direct rendering infrastructure 328DRM digital rights management 329DRRS display refresh rate switching 330DS debug store 331DSB double-sideband modulation 332DSDT differentiated system descriptor table 333DSL digital subscriber line 334DSL domain specific language 335DSLAM digital subscriber line access multiplexer 336DSN delivery status notification 337DSO dynamic shared object 338DSP digital signal processor 339DSSS direct sequence spread spectrum 340DTD document type definition 341DTE data terminal equipment 342DTE dumb terminal emulator 343DTL diode-transistor logic 344DTS digital thermal sensor 345DUT device under test 346DVB digital video broadcasting 347DVCS distributed version control system 348DVD digital versatile disc 349DVFS dynamic voltage and frequency scaling 350DVR digital video recorder 351DVI digital visual interface 352E-XER extended XML encoding rules 353EABI embedded-application binary interface 354EAP extensible authentication protocol 355EBR extended boot record 356ECC error correction code 357ECL emitter-coupled logic 358ECN explicit congestion notification 359ECP enhanced capability port 360ECS enhanced chip set 361ECS extended configuration space 362EDAT enhanced dynamic acceleration technology 363EDGE explicit data graph execution 364EDID extended display identification data 365EDO extended data out 366EDS electronical data sheet 367EEPROM electrically erasable programmable read only memory 368EFI extensible firmware interface 369EFL emitter follower logic 370EFM eight to fourteen modulation 371EGA enhanced graphics {array,adapter} 372EGP exterior gateway protocol 373EH extension header 374EIDE enchanced IDE 375EISA extended industry standard architecture 376ELF executable and linking format 377ELS entry level system 378EMI electro-magnetic interference 379EMP electro-magnetic pulse 380EMR electro-magnetic radiation 381EOF end of file 382EOI end of interrupt 383EOL end of line 384EOL end of life 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 401FCFS first come, first served 402FCS frame check sequence 403FDC floppy disk controller 404FDD floppy disk drive 405FDDI fiber distributed data interface 406FDE full disk encryption 407FEA finite element analysis 408FEC forward error correction 409FET field-effect transistor 410FFH functional fixed hardware 411FFI foreign function interface 412FFM focus follows mouse 413FFS fast file system 414FFS find first set 415FFT fast Fourier transform 416FG floating gate 417FHSS frequency hop spread spectrum 418FID frequency identifier 419FIFO first in, first out 420FILO first in, last out 421FIR fast infrared 422FLOPS floating [point] operations per second 423FLOSS free / libre / open source software 424FM frequency modulation 425FMR false match rate 426FOSS free / open source software 427FPGA field programmable gate array 428FPM fast page mode 429FPR floating point register 430FPU floating point unit 431FQDN fully qualified domain name 432FRR false rejection rate 433FRU field replaceable unit 434FS file system 435FSB front side bus 436FSCK file system check 437FSK frequency shift keying 438FSM finite-state machine 439FTA fault tree analysis 440FTP file transfer protocol 441FTPS file transfer protocol, secure 442FUS fast user switching 443FWH firmware hub 444FWS folding white space 445GAL generic array logic 446GAS generic address structure 447GC garbage collector 448GCR group-coded recording 449GDT global descriptor table 450GEM graphics execution manager 451GEM graphics environment manager 452GENA general event notification architecture 453GHC Glasgow Haskell compiler 454GID group identifier 455GIF graphics interchange format 456GMCH graphics and memory controller hub 457GNU GNU's not Unix 458GOT global offset table 459GPE general purpose event 460GPF general protection fault 461GPL GNU/general public license 462GPR general purpose register 463GPS generalized processor sharing 464GPT GUID partition table 465GPU graphics processing unit 466GR golden ratio 467GRE generic routing encapsulation 468GSI global system interrupt 469GUI graphics user interface 470GUID globally unique identifier 471HA high availability 472HAL hardware abstraction layer 473HAT hashed array tree 474HBA host bus adapter 475HCI host controller interface 476HCI human-computer interaction 477HCL hardware compatibility list 478HCF halt and catch fire 479HDD hard disk drive 480HDCP high-bandwidth digital content protection 481HDL hardware description language 482HDTV high-definition television 483HF high frequency 484HFM highest frequency mode 485HID human interface device 486HLL high-level language 487HMA high memory area 488HMI human-machine interface 489HP Hewlett-Packard 490HOOD hierarchical object oriented design 491HPC high performance computing 492HPET high precision event timer 493HT hyper-threading 494HTC hardware thermal control 495HTCC high temperature co-fired ceramic 496HTML hyper-text markup language 497HTT hyper-threading technology 498HTTP hyper-text transfer protocol 499HTTPS hyper-text transfer protocol, secure 500HVM hardware virtual machine 501HZ Hertz 502I2O intelligent input/output 503IA information assurance 504IANA Internet assigned numbers authority 505IBC iterated block cipher 506IBM International Business Machines 507IBS instruction based sampling 508ICA independent computer architecture 509IC integrated circuit 510ICB Internet citizen's band 511ICE in-circuit emulator 512ICH I/O controller hub 513ICE internal compiler error 514ICE in-circuit emulator 515ICMP Internet control message protocol 516ICT information and communications technology 517ICW initialization command word 518IDA Intel dynamic acceleration 519IDE integrated drive electronics 520IDE integrated development environment 521IDPS intrusion detection [and] prevention system 522IDRP inter-domain routing protocol 523IDS intrusion detection system 524IDT interrupt descriptor table 525IE Internet Explorer 526IEC international electrotechnical commission 527IEEE Institute [of] Electrical [and] Electronics Engineers 528IESG Internet Engineering Steering Group 529IETF Internet Engineering Task Force 530IF intermediate frequency 531IFCM isochronous flow control mode 532IGD Internet gateway device 533IGMP Internet group management protocol 534IGP interior gateway protocol 535IHV independent hardware vendor 536IKE Internet key exchange 537ILM internal loopback mode 538ILP instruction level parallelism 539IM instant messaging 540IMC integrated memory controller 541IMCR interrupt mode configuration register 542IMAP Internet mail access protocol 543IMR interrupt mask register 544IMS information management system 545INCITS international committee on information technology standards 546IO input/output 547IOCTL input/output control 548IOMMU input/output memory management unit 549IP Internet Protocol 550IP intellectual property 551IPC interprocess communication 552IPE integrated programming environment 553IPI interprocessor interrupt 554IPNG Internet protocol, next generation 555IPS intrusion prevention system 556IPS in-plane switching 557IPSEC Internet protocol security 558IRC Internet relay chat 559IRDA infrared data association 560IRQ interrupt request 561IRQL interrupt request level 562IRR interrupt request register 563IRTF Internet research task force 564IS information system 565ISA industry standard architecture 566ISA instruction set architecture 567ISDN integrated services digital network 568ISI inter-symbol interference 569ISM industrial, scientific and medical 570ISN initial serial number 571ISO international standards organization 572ISOC Internet society 573ISP Internet service provider 574ISR interrupt service routine 575ISR in-service register 576IST interrupt stack table 577ISV independent software vendor 578IT information technology 579ITB Intel turbo boost 580IV initialization vector 581IVT interrupt vector table 582JBOD just a bunch of disks 583JFET junction [gate] field-effect transistor 584JIT just in time 585JPEG joint photographic experts group 586JRE Java runtime environment 587JTAG joint test action group 588KB keyboard 589KB kilobyte 590KBD keyboard 591KBD kilobaud 592KLOC thousand lines of code 593KMS kernel-mode setting 594KPI kernel programming interface 595KVA kernel virtual address 596KVM kernel virtual memory 597KVM keyboard, video, mouse switch 598LAMP Linux Apache MySQL {Perl,PHP,Python} 599LAN local area network 600LAPIC local advanced programmable interrupt controller 601LAR load access rights 602LBA logical block addressing 603LBS location-based service 604LCD liquid crystal display 605LCP link control protocol 606LDA local delivery agent 607LDAP lightweight directory access protocol 608LDR light-dependent resistor 609LDT local descriptor table 610LE logical extent 611LED light emitting diode 612LER label edge router 613LF line feed 614LF low frequency 615LFM lowest frequency mode 616LFN long file names 617LFO low-frequency oscillation 618LFS log-structured file system 619LFU least frequently used 620LHP loop heat pipe 621LIFO last in, first out 622LILO last in, last out 623LILO Linux loader 624LINT local interrupt 625LIR local Internet registry 626LKM {Linux, loadable} kernel module 627LKML Linux kernel mailing list 628LL load linked 629LL/SC load linked / store conditional 630LLC logical link control 631LLF low level format 632LLMNR link-local multicast name resolution 633LLVM Low Level Virtual Machine 634LM long mode 635LMM link management mode 636LNO loop nest optimization 637LOC lines of code 638LPC low pin count 639LPS local positioning system 640LRC longitudinal redundancy check 641LRM left-to-right mark 642LRO left-to-right override 643LRU least recently used 644LSB least significant bit [or: byte] 645LSB Linux standards base 646LSI large scale integration 647LSL load segment limit 648LSR label switch router 649LTCC low temperature co-fired ceramic 650LTR left to right 651LTR load task register 652LUN logical unit number 653LV logical volume 654LVM logical volume management 655LVT local vector table 656LWP light-weight process 657LZW Lempel Ziv Welch 658MAC medium access control 659MAC mandatory access control 660MADT multiple APIC descriptor table 661MB megabyte 662MBR master boot record 663MBS megabits per second 664MC memory controller 665MCA machine check architecture 666MCC multiversion concurrency control 667MCE machine check exception 668MCGA multicolor graphics adapter 669MCH memory controller hub 670MCM multi-chip module 671MCQ memory controlled queue 672MD machine-dependent 673MDA mail delivery agent 674MDA monochrome display adapter 675MDRAM multibank dynamic random access memory 676MESI modified, exclusive, shared, invalid 677MFC merge from current 678MFM modified frequency modulation 679MI machine-independent 680MIB management information base 681MID mobile internet device 682MIDI musical instrument digital interface 683MIF management information format 684MIMD multiple instruction stream, multiple data stream 685MIME multipurpose Internet mail extensions 686MIMO multiple input multiple output 687MIPS million instructions per second 688MISD multiple instruction, single data 689MIT Massachusetts Institute of Technology 690ML mailing list 691ML machine language 692ML machine learning 693ML markup language 694ML maximum likelihood 695MLC multi-level cell 696MLHP micro loop heat pipe 697MMIC monolithic microwave integrated circuit 698MMIO memory mapped input/output 699MMU memory management unit 700MMX multimedia extension 701MMX multiple math extension 702MMX matrix math extension 703MO magneto-optical 704MOESI modified, owned, exclusive, shared, invalid 705MOF maximum operating frequency 706MOSFET metal-oxide-semiconductor field-effect transistor 707MOSI modified, owned, shared, invalid 708MP multiprocessor 709MP multiprocessing 710MP multi-platform 711MP multiplayer 712MPEG moving picture experts group 713MPI message passing interface 714MPLS multiprotocol label switching 715MPP massively parallel processor 716MPS multiprocessor specification 717MPS memory pool system 718MR modem ready 719MRU most recently used 720MS Microsoft 721MSB most significant bit [or: byte] 722MSE mean square error 723MSF minutes seconds frames 724MSI message signaled interrupt 725MSI modified, shared, invalid 726MSR machine state register 727MSS maximum segment size 728MT machine translation 729MTA mail transfer agent 730MTBF mean time between failures 731MTRR memory type range register 732MTTF mean time to failure 733MTU maximum transmission unit 734MUA mail user agent 735MUD multi-user domain 736MVCC multiversion concurrency control 737MWE module width encoding 738MX mail exchange 739NACK negative acknowledgement 740NAN not a number 741NAS network attached storage 742NAT network address translation 743NAV network allocation vector 744NC numerical control 745NCO numerically-controlled oscillator 746NCP network control protocol 747NCQ native command queuing 748ND neighbor discovery 749NE numeric error 750NFA nondeterministic finite automaton 751NFS network file system 752NIA next instruction address 753NIC network interface card 754NIP network interface protocol 755NIS network information service 756NLS native language support 757NMI non-maskable interrupt 758NNTP network news transfer protocol 759NOP no operation 760NP nondeterministic polynomial time 761NRZ non-return to zero 762NSA National Security Agency 763NTM non-deterministic Turing machine 764NTP network time protocol 765NUMA non-uniform memory access 766NVRAM non-volatile random access memory 767NW not write-through 768NX no execute 769OAEP optimal asymmetric encryption padding 770OBO off by one 771OBOE off by one error 772OCL object constraint language 773OCR optical character recognition 774ODCM on-demand clock modulation 775ODT on-die termination 776OEM original equipment manufacturer 777OFDM orthogonal frequency division multiplexing 778OFET organic field-effect transistor 779OLE object linking and embedding 780ONFI open nand flash interface 781OO object oriented 782OO OpenOffice 783OOB out of band 784OOE out of order execution 785OOM out of memory 786OOP object oriented programming 787OOSE object oriented software engineering 788OPS operations per second 789OPM operations per minute 790OQL object query language 791ORM object-relational mapping 792OS operating system 793OSD open source definition 794OSF open software foundation 795OSI open systems interconnection 796OSI open-source initiative 797OSPF open shortest path first 798OSPM OS power management 799OSS open source software 800OSS open sound system 801OSVW operating system visible workarounds 802OTP one time password 803OU organizational unit 804OUI organizationally unique identifier 805OWL Web ontology language 806P2P peer to peer 807P2P PCI to PCI 808PA physical address 809PA phase accumulator 810PAC phase-amplitude converter 811PAE physical address extension 812PAL programmable array logic 813PAL phase alternating line 814PAM pluggable authentication modules 815PAM pulse amplitude modulation 816PAP password authentication protocol 817PAT page attribute table 818PAT port address translation 819PATA parallel ATA 820PAX portable archive exchange 821PBE pending break encoding 822PBE programming by example 823PC personal computer 824PC program counter 825PCB printed circuit board 826PCC Portable C Compiler 827PCD page-level cache disable 828PCE performance-monitor counter enable 829PCI peripheral component interconnect 830PCM phase change memory 831PCM pulse code modulation 832PCMCIA personal computer memory card international association 833PD public domain 834PDA personal digital assistant 835PDA pushdown automaton 836PDAG propositional directed acyclic graph 837PDB power distribution board 838PDF portable document format 839PDM pulse-duration modulation 840PDN pull-down network 841PDP page descriptor page 842PDS product data sheet 843PDU protocol data unit 844PE protection enable 845PECI platform environment control interface 846PEP protocol extension protocol 847PER packed encoding rules 848PERL practical extraction [and] report language 849PFS perfect forward secrecy 850PGAS partitioned global address space 851PGE page global enable 852PGP pretty good privacy 853PHB PCI host bridge 854PIC programmable interrupt controller 855PIC position independent code 856PID process id 857PIE position independent executable 858PIM personal information manager 859PIM platform-independent model 860PIN personal identification number 861PIO programmed input/output 862PIPT physically indexed, physically tagged 863PIQ prefetch input queue 864PIT programmable interrupt timer 865PIV personal identity verification 866PKI public key infrastructure 867PKCS public-key cryptography standards 868PLC programmable logic controller 869PLD programmable logic device 870PLL phase locked loop 871PLRU pseudo LRU 872PLTM package level thermal management 873PM power management 874PM {phase, pulse} modulation 875PME power management event 876PMI platform management interrupt 877PMIO port-mapped input/output 878PMT photo-multiplier tube 879PMU power management unit 880PNG portable network graphics 881PNP plug and play 882POE power over ethernet 883POF probability of failure 884POP post office protocol 885POP power on password 886POSIX portable operating system interface [for] Unix 887POST power on self test 888POTS plain old telephone system 889PP pair programming 890PPC PowerPC 891PPB PCI [to] PCI bridge 892PPI pixels per inch 893PPM pages per minute 894PPP point-to-point protocol 895PPPOA point-to-point protocol over ATM 896PPPOE point-to-point protocol over ethernet 897PPU physics processing unit 898PRBS pseudo-random bit sequence 899PRML partial response, maximum likelihood 900PRN pseudo random {number, noise} 901PRNG pseudo random number generator 902PROM programmable read only memory 903PSD power spectral density 904PSE page size extensions 905PSK pre-shared key 906PSK phase shift keying 907PSTN public switched telephone network 908PSW program status word 909PTE page table entry 910PTLA pseudo top level aggregator 911PTP page table page 912PTV perceived target value 913PU processing unit 914PUN physical unit number 915PV physical volume 916PVG physical volume group 917PVI protected-mode virtual interrupt 918PWM pulse width modulation 919PXE preboot execution environment 920QA quality assurance 921QAM quality assurance management 922QAM quadrature amplitude modulation 923QBE query by example 924QC quality control 925QDI quasi delay insensitive 926QOS quality of service 927RA receiver address 928RA remote assistance 929RA router advertisement 930RA resource affinity 931RAD rapid application development 932RAID redundant array of inexpensive disks 933RAM random access memory 934RAS restartable atomic sequence 935RAS remote access service 936RAS row address strobe 937RBF radial basis function 938RBT red-black tree 939RC release candidate 940RC remote control 941RCS revision control system 942RCU read, copy, update 943RDF resource description format 944RDM relational data model 945RDMA remote direct memory access 946RE regular expression 947REST representational state transfer 948RF radio frequency 949RFI radio frequency interference 950RFO request for ownership 951RGB red green blue 952RH read hit 953RHL Red Hat Linux 954RIB routing information base 955RIFF Resource Interchange File Format 956RIP routing information protocol 957RIR regional Internet registry 958RISC reduced instruction set computing 959RKM ROM Kernel Manual 960RLE run length encoding 961RLL run length limited 962RLO right-to-left override 963RM read miss 964RMI remote method invocation 965RMPM rapid memory power management 966RMS root mean square 967RMW read, modify, write 968RNG random number generator 969ROM read only memory 970RPC remote procedure call 971RPL requested privilege level 972RPM revolutions per minute 973RR round robin 974RR random replacement 975RS relay station 976RSA Rivest, Shamir and Adleman 977RSS really simple syndication 978RSS residual sum of squares 979RT real time 980RTC real time clock 981RTC real time computing 982RTF rich text format 983RTL resistor-transistor logic 984RTOS real time operating system 985RTS {ready, request} to send 986RTT round time trip 987RUP rational unified process 988RWM read-write memory 989RX receive, receiver 990S/PDIF Sony/Phillips digital interface 991SA security advisory 992SA security association 993SA source address 994SA structured analysis 995SAAS software as a service 996SACD super audio compact disc 997SAD security association database 998SAL system abstraction layer 999SAM serial access memory 1000SAM sum addressed memory 1001SAN storage area network 1002SAPIC streamlined advanced programmable interrupt controller 1003SASD structured analysis, structured design 1004SASI shugart associates system interface (predecessor to SCSI) 1005SASL simple authentication [and] security layer 1006SATA serial advanced technology attachment 1007SB sound blaster 1008SBU standard build unit 1009SC store conditional 1010SCA source code analyzer 1011SCADA supervisory control and data acquisition 1012SCC single chip cloud 1013SCC source code control 1014SCCS source code control system 1015SCM software configuration management 1016SCM source code management 1017SCP secure copy 1018SCI system control interrupt 1019SCI scalable coherent interface 1020SCSI small computer system interface 1021SCTP stream control transmission protocol 1022SDI symbol deinterleave 1023SDK software development kit 1024SDL simple declarative language 1025SDRAM synchronous dynamic random access memory 1026SDT syntax-directed translation 1027SEGV segmentation violation 1028SFI simple firmware interface 1029SFC sequential function chart 1030SGRAM synchronous graphics random access memory 1031SIFS short inter-frame space 1032SIMD single instruction, multiple data 1033SIMM single inline memory module 1034SIP session initiation protocol 1035SIR slow infrared 1036SISD single instruction, single data 1037SLC single-level cell 1038SLDRAM synchronous-link dynamic random access memory 1039SLI scalable link interface 1040SLI scan-line interleave 1041SLOC source lines of code 1042SLRU segmented LRU 1043SMA smart memory access 1044SMAF system management action field 1045SMART self-monitoring analysis and reporting technology 1046SMBIOS system management BIOS 1047SMC system management controller 1048SMI system management interrupt 1049SMI structure of management information 1050SMM system management mode 1051SMP symmetric multiprocessing 1052SMT simultaneous multithreading 1053SMTP simple mail transfer protocol 1054SMU system management unit 1055SNMP simple network management protocol 1056SNR signal [to] noise ratio 1057SOA service oriented architecture 1058SOAP simple object access protocol 1059SOC system on chip 1060SOF start of frame 1061SOHO small office / home office 1062SOL serial over LAN 1063SP stack pointer 1064SP service pack 1065SPARC scalable processor architecture 1066SPARQL SPARQL protocol and RDF query language 1067SPD security policy database 1068SPD serial presence detect 1069SPI serial peripheral interface 1070SPI stateful packet inspection 1071SPMD single process, multiple data 1072SPR special purpose register 1073SPT sectors per track 1074SQA software quality assurance 1075SQL structured query language 1076SRAM static random access memory 1077SRC sample rate conversion 1078SS stack segment 1079SS self-snoop 1080SSB single-sideband modulation 1081SSD solid state drive 1082SSE streaming SIMD extensions 1083SSFDC solid state floppy disc card 1084SSH secure shell 1085SSI server side includes 1086SSL secure sockets layer 1087SSP stack smashing protection 1088STC software thermal control 1089STD state transition diagram 1090STP shielded twisted pair 1091STP spanning-tree protocol 1092SUS Single Unix Specification 1093SUT system under test 1094SVG scalable vector graphics 1095SVGA super video graphics {array,adapter} 1096SVM secure virtual machine 1097SVM support vector machine 1098SVR System V Release 1099SWF Shockwave Flash 1100SWIG simplified wrapper [and] interface generator 1101SYR symbol timing recovery 1102TA transmitter address 1103TA test assertion 1104TAI international atomic time 1105TAO track at once 1106TAOCP The Art of Computer Programming 1107TAP test anywhere protocol 1108TAS test and set 1109TB terabyte 1110TCB trace capture buffer 1111TCB trusted computing base 1112TCC thermal control circuit 1113TCL tool command language 1114TCP transmission control protocol 1115TCQ tagged command queueing 1116TDC time [to] digital converter 1117TDD test driven development 1118TDD time division duplex 1119TDM time division multiplexing 1120TDMA time division multiple access 1121TDOA time difference of arrival 1122TDP thermal design {point, power} 1123TECO Text Editor and Corrector 1124TFT thin film transistor 1125TFTP trivial file transfer protocol 1126TIAS try it and see 1127TIFF tagged image file format 1128TITS try it to see 1129TK temporal key 1130TLA top level aggregator 1131TLB transition lookaside buffer 1132TLD top level domain 1133TLS transport layer security 1134TLS thread local storage 1135TM Turing machine 1136TM thermal monitor 1137TMDS transition minimized differential signaling 1138TMO timeout 1139TOD time of day 1140TOS terms of service 1141TOS type of service 1142TOS trusted operating system 1143TP transaction processing 1144TPM trusted platform module 1145TPM transactions per minute 1146TPR task priority register 1147TPS transmission parameters signaling 1148TR token ring 1149TR task register 1150TRL timing recovery loop 1151TRNG true random number generator 1152TS time stamp 1153TS time series 1154TS transport stream 1155TS terminal services 1156TSC time stamp counter 1157TSD time stamp disable 1158TSL test, set, lock 1159TSO time sharing option 1160TSP time stamp protocol 1161TSP time synchronization protocol 1162TSP tunnel setup protocol 1163TSP traveling salesman problem 1164TSS task state segment 1165TTL time to live 1166TTL transistor-transistor logic 1167TTM translation table maps 1168TTY teletype 1169TX transmit out, transmitter 1170TZ time zone 1171UAC user {account, access} control 1172UART universal asynchronous receiver/transmitter 1173UAT user acceptance testing 1174UC uncacheable 1175UCS uniform-cost search 1176UDMA ultra DMA 1177UDO ultra density optical (storage) 1178UDP user datagram protocol 1179UFS Unix file system 1180UI user interface 1181UI unit interval 1182UID user identifier 1183UID unique identifier 1184UL upload 1185UMA uniform memory access 1186UMA upper memory area 1187UMB upper memory block 1188UMPC ultra-mobile PC 1189UML unified modeling language 1190UPNP universal plug and play 1191UPS uninterruptible power supply 1192URI uniform resource identifier 1193URL uniform resource locator 1194URN uniform resource name 1195USART universal synchronous/asynchronous receiver/transmitter 1196USB universal serial bus 1197USWC uncacheable speculative write combining 1198UT unit test 1199UTC coordinated universal time 1200UTP unshielded twisted pair 1201UUCP Unix-to-Unix copy protocol 1202UUID universally unique identifier 1203UUOC useless use of cat 1204UUT unit under test 1205UX user experience 1206VA volt-ampere 1207VA virtual address 1208VA vertical alignment 1209VAX virtual address extension 1210VB Visual Basic 1211VCA variable-gain amplifier 1212VCC common collector voltage 1213VCF voltage-controlled filter 1214VCM virtual channel memory 1215VCO voltage-controlled oscillator 1216VCS version control system 1217VESA video electronics standards association 1218VFO variable-frequency oscillator 1219VG volume group 1220VGA video graphics {array,adapter} 1221VHDCI very high density cable interconnect 1222VID voltage level identifier 1223VIPT virtually indexed, physically tagged 1224VIVT virtually indexed, virtually tagged 1225VLAN virtual local area network 1226VLIW very long instruction word 1227VLSI very large scale integration 1228VLSM variable length subnet mask 1229VOD video on demand 1230VM virtual {machine,memory} 1231VME virtual mode extension 1232VMX virtual machine extensions 1233VMX vector multimedia extensions 1234VPN virtual private network 1235VR virtual reality 1236VRAM video random access memory 1237VRM voltage regulator module 1238VRRP virtual router redundancy protocol 1239W Watt 1240W3C World Wide Web Consortium 1241WAN wide area network 1242WAP wireless application protocol 1243WEP wired equivalent privacy 1244WFI wait for interrupt 1245WFQ weighted fair queuing 1246WH write hit 1247WIFI wireless fidelity 1248WLAN wireless local area network 1249WDT watchdog timer 1250WM write miss 1251WMI Windows management instrumentation 1252WOL wake on LAN 1253WOR wake on ring 1254WORM write once read many 1255WP write protect 1256WP word processor 1257WP WordPerfect 1258WPA wi-fi protected access 1259WRAM window random access memory 1260WS web services 1261WTC write through caching 1262WWAN wireless wide area network 1263WWW world wide web 1264WYSIWYG what you see is what you get 1265XBAR crossbar 1266XER XML encoding rules 1267XGA extended graphics {array,adapter} 1268XIP execute in place 1269XML extensible markup language 1270XOR exclusive or 1271XP extreme programming 1272XSL extensible stylesheet language 1273XSS cross site scripting 1274XT extended technology 1275XUL XML user interface language 1276YACC yet another compiler compiler 1277YAWPFAPR you are welcome; please file a problem report 1278YP yellow pages (aka NIS) 1279YTD year to date 1280ZBR zone bit recording 1281ZFOD zero-filled on demand 1282ZIF zero insertion force 1283ZIFS zero insertion force socket 1284ZMA zone multicast address 1285