acronyms.comp revision 1.195
1$NetBSD: acronyms.comp,v 1.195 2018/05/11 14:42:03 sevan 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 45AMP asymmetric multiprocessing 46AMQP advanced message queuing protocol 47AMT active management technology 48AN Arabic number 49ANR application not responding 50ANSI American National Standards Institute 51AO analog output 52AOL Alert-on-LAN 53AOS add or subtract 54AP access point 55AP application processor 56API application programming interface 57APIC advanced programmable interrupt controller 58APIPA automatic private IP addressing 59APT advanced persistent threat 60AQM active queue management 61ARAT always running APIC timer 62ARC adaptive replacement cache 63ARC automatic reference counting 64ARM Advanced RISC Machines 65ARP Address Resolution Protocol 66ARPA Advanced Research Projects Agency 67ARQ automatic repeat request 68ARR address range register 69ARU audio response unit 70AS autonomous system 71ASC advanced smart cache 72ASCII American Standard Code for Information Interchange 73ASD agile software development 74ASE advanced software environment 75ASIC application-specific integrated circuit 76ASK amplitude shif keying 77ASLR address space layout randomization 78ASN autonomous system number 79ASPM active state power management 80ASQ automated software quality 81ASR address space register 82AST abstract syntax tree 83AST asynchronous trap 84AT access time 85AT advanced technology 86ATA advanced technology attachment 87ATAPI advanced technology attachment packet interface 88ATC address translation cache 89ATM asynchronous transfer mode 90ATX advanced technology extended 91AV anti virus 92AVL Adelson-Velsky-Landis 93AVX advanced vector extensions 94BA byte align 95BAL basic assembly language 96BAR base address register 97BBS bulletin board system 98BCC blind carbon copy 99BCD binary coded decimal 100BCR byte count register 101BCS base configuration space 102BD baud 103BDD binary decision diagram 104BDI bit deinterleave 105BDUF big design up front 106BEDO burst extended data output 107BER basic encoding rules 108BER bit error {rate,ratio} 109BFD binary {file,format} descriptor 110BFKL big fscking kernel lock 111BFS breadth-first search 112BFT binary file transfer 113BGA ball grid array 114BGP Border Gateway Protocol 115BGPSEC BGP Security 116BIND Berkeley Internet Name Daemon 117BIOS Basic Input/Output System 118BIOS built-in operating system 119BIST built-in self-test 120BIU bus interface unit 121BKDG BIOS and kernel developer's guide 122BLAS basic linear algebra subprograms 123BLC back light control 124BLOB binary large object 125BM bus master 126BMC baseboard management controller 127BMIC bus master interface controller 128BN boundary neutral 129BNF Backus-Naur form 130BO binary output 131BOF beginning of file 132BOM beginning of message 133BOM byte order mark 134BP base pointer 135BP boot processor 136BPB BIOS parameter block 137BPDU bridge protocol data unit 138BPF Berkeley Packet Filter 139BPI bits per inch 140BPM business process modelling 141BPS bits per second 142BPSK binary phase shift keying 143BQS Berkeley quality software 144BRE basic regular expression 145BS backspace 146BS binary sequence 147BSA basic service area 148BSD Berkeley Software Distribution 149BSF bit scan forward 150BSOD blue screen of death 151BSP binary space partition 152BSP board support package 153BSP bootstrap processor 154BSR bit scan reverse 155BSS basic service set 156BSS block started by symbol 157BSSID basic service set identifier 158BT BitTorrent 159BT Bluetooth 160BT bit test 161BTC bit test [and] complement 162BTR bit test [and] reset 163BTS bit test [and] set 164BTS bug tracking system 165BW bandwidth 166BWM block-write mode 167CA certificate authority 168CAD computer-aided design 169CAM computer assisted manufacturing 170CAM conditional access module 171CAM content addressable memory 172CARP Common Address Redundancy Protocol 173CAS column address strobe 174CAS compare and swap 175CAS computer algebra system 176CASE computer aided software engineering 177CAU control access unit 178CAV constant angular velocity 179CBC cipher block chaining 180CBR constant bit rate 181CC carbon coby 182CCD charge coupled device 183CCI co-channel interferer 184CCNUMA cache-coherent non-uniform memory access 185CD cache disable 186CD compact disc 187CDDA compact disc digital audio 188CDMA code division multiple access 189CDP Cisco Discovery Protocol 190CDRAM cache dynamic random access memory 191CER canonical encoding rules 192CF compact flash 193CFB cipher feedback 194CFG context-free grammar 195CFG control-flow graph 196CG control gate 197CGA Color Graphics Adapter 198CGI common gateway interface 199CGN Carrier-Grade NAT 200CHAP Challenge-Handshake Authentication Protocol 201CHS cylinder/head/sector 202CI continuous integration 203CI {common,component} interface 204CIDR Classless Inter-Domain Routing 205CIFS Common Internet File System 206CIL common intermediate language 207CIR carrier-to-interference ratio 208CIS contact image sensor 209CISC complex instruction set {computer,computing} 210CJK Chinese, Japanese, [and] Korean 211CLF common log format 212CLI command line interface 213CLR common language runtime 214CLTT closed loop thermal throttling 215CLUT color look-up table 216CLV constant linear velocity 217CM configuration management 218CMA concert multithread architecture 219CMS {configuration,content,course} management system 220CMI control {management,method} interface 221CMOS complementary metal-oxide-semiconductor 222CMP chip multi-processing 223CMS content management system 224CMYK cyan magenta yellow black 225CN {common,canonical} name 226CNC computer numerical control 227CNR carrier-to-noise ratio 228COF current operating frequency 229COFDM coded orthogonal frequency division multiplexing 230COFF common object file format 231COM component object model 232COMA cache-only memory architecture 233CORBA common object request broker architecture 234COW copy-on-write 235CP continuous pilot 236CPB core performance boost 237CPE common phase error 238CPG clock pulse generator 239CPL current privilege level 240CPLD complex programmable logic device 241CPP C preprocessor 242CPS characters per second 243CPT command pass through 244CPU central processing unit 245CR carriage return 246CRC cyclic redundancy check 247CRL carrier recovery loop 248CRLF carriage return line feed 249CRT cathode ray tube 250CS cable select 251CS chip select 252CS code segment 253CS computer science 254CSDL {common,conceptual} schema definition language 255CSI channel state information 256CSI common system interface 257CSMA carrier sense multiple access 258CSMA/CA carrier sense multiple access with collision avoidance 259CSMA/CD carrier sense multiple access with collision detection 260CSR control [and] status registers 261CSRG Computer Systems Research Group 262CSS cascading style sheets 263CSV comma-separated values 264CTM close to metal 265CTR counter [mode] 266CTS clear to send 267CUA common user access 268CUT coordinated universal time 269CV control voltage 270CVE common vulnerabilities and exposures 271CVS Concurrent Versions System 272DA destination address 273DAA distributed application architecture 274DAB digital audio broadcasting 275DAC digital [to] analog converter 276DAC discretionary access control 277DAD duplicate address detection 278DANE DNS-based Authentication of Named Entities 279DAO disk at once 280DAP Directory Access Protocol 281DAT digital audio tape 282DAT dynamic acceleration technology 283DB database 284DBA database administrator 285DBA dynamic bandwidth allocation 286DBB data bus buffer 287DBC design by contract 288DBL dynamic buffer limiting 289DBMS database management system 290DBS database server 291DC direct current 292DCC Direct Client-to-Client 293DCC direct cable connect 294DCD data carrier detect 295DCE data control equipment 296DCE distributed computing environment 297DCOM distributed component object model 298DCOP Desktop COmmunication Protocol 299DCS data collection systems 300DCT discrete cosine transform 301DCU data cache unit 302DDC display data channel 303DDE dynamic data exchange 304DDK device driver kit 305DDL data description language 306DDR double data rate 307DDS direct digital sound 308DDWG Digital Display Working Group 309DE debugging extensions 310DE desktop environment 311DEA data encryption algorithm 312DEK data encryption key 313DEP data execution prevention 314DER distinguished encoding rules 315DES Data Encryption Standard 316DF don't fragment 317DFA deterministic finite automaton 318DFC data flow control 319DFS depth first search 320DFS distributed file system 321DFT diagnostic function test 322DFT discrete Fourier transform 323DGL data generation language 324DH Diffie-Hellman 325DHCP Dynamic Host Configuration Protocol 326DIFS distributed inter-frame space 327DIMM dual inline memory module 328DIRT design in real time 329DL diode logic 330DL discrete logarithm 331DL download 332DLE data link escape 333DLL dynamic link library 334DLP discrete logarithm problem 335DMA direct memory access 336DMI desktop management interface 337DMS document management system 338DMT discrete multitone modulation 339DNARD Digital network appliance reference design 340DND drag and drop 341DNS Domain Name System 342DNSSEC DNS Security Extensions 343DOE distributed object environment 344DOF data over fibre 345DOM document object model 346DOS denial of service 347DOS disk operating system 348DP DisplayPort 349DPC deferred procedure call 350DPCM differential pulse code modulation 351DPD dead peer detection 352DPI deep packet inspection 353DPI dots per inch 354DPL descriptor privilege level 355DPS Display PostScript 356DPST display power savings technology 357DRAAS disaster recovery as a service 358DRAM dynamic random access memory 359DRBG deterministic random bit generator 360DRI direct rendering infrastructure 361DRM digital rights management 362DRRS display refresh rate switching 363DS debug store 364DSA digital signature algorithm 365DSAP destination service access point 366DSB double-sideband modulation 367DSDT differentiated system descriptor table 368DSL digital subscriber line 369DSL domain specific language 370DSLAM digital subscriber line access multiplexer 371DSN delivery status notification 372DSO dynamic shared object 373DSP digital signal processor 374DSSS direct sequence spread spectrum 375DTD document type definition 376DTE data terminal equipment 377DTE dumb terminal emulator 378DTL diode-transistor logic 379DTLS datagram transport layer security 380DTS digital thermal sensor 381DUT device under test 382DVB digital video broadcasting 383DVCS distributed version control system 384DVD digital versatile disc 385DVFS dynamic voltage and frequency scaling 386DVI device independent 387DVI Digital Visual Interface 388DVR digital video recorder 389E-XER extended XML encoding rules 390EABI embedded-application binary interface 391EAI Email Address Internationalization 392EAI Enterprise Application Integration 393EAP Extensible Authentication Protocol 394EAPOL EAP over Lan 395EBCDIC Extended Binary Coded Decimal Interchange Code 396EBR extended boot record 397EC elliptic curve 398ECC elliptic curve cryptography 399ECC error correction code 400ECDH elliptic curve Diffie-Hellman 401ECDL elliptic curve discrete logarithm 402ECDLP elliptic curve discrete logarithm problem 403ECDSA elliptic curve digital signature algorithm 404ECL emitter-coupled logic 405ECN explicit congestion notification 406ECP enhanced capability port 407ECS enhanced chip set 408ECS extended configuration space 409EDAT enhanced dynamic acceleration technology 410EdDSA Edwards curve digital signature algorithm 411EDGE explicit data graph execution 412EDID extended display identification data 413EDO extended data out 414EDS electronical data sheet 415EEE energy efficient ethernet 416EEPROM electrically erasable programmable read only memory 417EFI extensible firmware interface 418EFL emitter follower logic 419EFM eight to fourteen modulation 420EGA Enhanced Graphics Adapter 421EGP exterior gateway protocol 422EH extension header 423EIDE enhanced IDE 424EISA extended industry standard architecture 425ELF executable and linking format 426ELS entry level system 427EMI electro-magnetic interference 428EMP electro-magnetic pulse 429EMR electro-magnetic radiation 430EOF end of file 431EOI end of interrupt 432EOL end of line 433EOT end of transmission 434EPIC explicitly parallel instruction computing 435EPP enhanced parallel port 436EPRML extended partial response, maximum likelihood 437EPROM erasable programmable read only memory 438ERD emergency recovery disk 439ERD entity relationship diagram 440ERE extended regular expression 441ESDRAM enhanced synchronous dynamic random access memory 442ESS electronic switching system 443ESS extended service set 444ESSID extended service set identifier 445EST enhanced speedstep 446ETL extract, transform, load 447EU execution unit 448EULA end user license agreement 449FAT file allocation table 450FBRAM frame buffer random access memory 451FCL fiber channel loop 452FCS frame check sequence 453FDC floppy disk controller 454FDD floppy disk drive 455FDDI fiber distributed data interface 456FDE full disk encryption 457FEA finite element analysis 458FEC forward error correction 459FET field-effect transistor 460FF finite field 461FF form feed 462FFDH finite-field Diffie-Hellman 463FFH functional fixed hardware 464FFI foreign function interface 465FFM focus follows mouse 466FFS Fast File System 467FFS find first set 468FFT fast Fourier transform 469FG floating gate 470FHSS frequency hop spread spectrum 471FID frequency identifier 472FIFO first in, first out 473FILO first in, last out 474FIPS Federal Information Processing Standards 475FIR fast infrared 476FLOPS floating [point] operations per second 477FLOSS free/libre/open source software 478FM frequency modulation 479FMR false match rate 480FOSS free/open source software 481FPGA field programmable gate array 482FPM fast page mode 483FPR floating point register 484FPU floating point unit 485FQDN fully qualified domain name 486FRR false rejection rate 487FRU field replaceable unit 488FS file system 489FSB front side bus 490FSCK file system check 491FSF Free Software Foundation 492FSK frequency shift keying 493FSM finite-state machine 494FTA fault tree analysis 495FTL flash translation layer 496FTP File Transfer Protocol 497FTPS File Transfer Protocol Secure 498FUS fast user switching 499FWH firmware hub 500FWS folding white space 501GAL generic array logic 502GAS generic address structure 503GC garbage collector 504GCM Galois counter mode 505GCR group-coded recording 506GDT global descriptor table 507GEM graphics environment manager 508GEM graphics execution manager 509GENA general event notification architecture 510GHC Glasgow Haskell compiler 511GID group identifier 512GIF graphics interchange format 513GMCH graphics and memory controller hub 514GNU GNU's Not Unix 515GOP graphics output protocol 516GOT global offset table 517GPE general purpose event 518GPF general protection fault 519GPG GNU Privacy Guard 520GPL [GNU] General Public License 521GPR general purpose register 522GPS generalized processor sharing 523GPT GUID partition table 524GPU graphics processing unit 525GR golden ratio 526GRE generic routing encapsulation 527GSI global system interrupt 528GUI graphical user interface 529GUID globally unique identifier 530GVFS git virtual file system 531HA high availability 532HAL hardware abstraction layer 533HAT hashed array tree 534HBA host bus adapter 535HCF halt and catch fire 536HCI host controller interface 537HCI human-computer interaction 538HCL hardware compatibility list 539HDCP High-bandwidth Digital Content Protection 540HDD hard disk drive 541HDL hardware description language 542HDMI High-Definition Multimedia Interface 543HDTV high-definition television 544HF high frequency 545HFM highest frequency mode 546HID human interface device 547HKP HTTP Keyserver Protocol 548HLL high-level language 549HMA high memory area 550HMI human-machine interface 551HOOD hierarchical object oriented design 552HP Hewlett-Packard 553HPC high performance computing 554HPET high precision event timer 555HSM hardware security module 556HSM hierarchical storage management 557HT hyper-threading 558HTC hardware thermal control 559HTCC high temperature co-fired ceramic 560HTML HyperText Markup Language 561HTT hyper-threading technology 562HTTP Hypertext Transfer Protocol 563HTTPS Hypertext Transfer Protocol Secure 564HVM hardware virtual machine 565HZ Hertz 566I2O intelligent input/output 567IA information assurance 568IAAS infrastructure as a service 569IANA Internet Assigned Numbers Authority 570IBC iterated block cipher 571IBM International Business Machines 572IBS instruction based sampling 573IBSS independent basic service set 574IC integrated circuit 575ICA independent computer architecture 576ICB Internet Citizen's Band 577ICE in-circuit emulator 578ICE internal compiler error 579ICH I/O controller hub 580ICMP Internet Control Message Protocol 581ICT information and communications technology 582ICW initialization command word 583IDA Intel dynamic acceleration 584IDCMP Intuition direct communication message port 585IDE integrated development environment 586IDE integrated drive electronics 587IDPS intrusion detection [and] prevention system 588IDRP inter-domain routing protocol 589IDS intrusion detection system 590IDT interrupt descriptor table 591IE Internet Explorer 592IEC International Electrotechnical Commission 593IEEE Institute of Electrical and Electronics Engineers 594IESG Internet Engineering Steering Group 595IETF Internet Engineering Task Force 596IF intermediate frequency 597IFCM isochronous flow control mode 598IFF Interchange File Format 599IFS internal field separator 600IGD Internet gateway device 601IGMP Internet Group Management Protocol 602IGP interior gateway protocol 603IHV independent hardware vendor 604IKE Internet key exchange 605ILM internal loopback mode 606ILOM integrated lights-out management 607ILP instruction level parallelism 608IM instant messaging 609IMAP Internet Message Access Protocol 610IMC integrated memory controller 611IMCR interrupt mode configuration register 612IMR interrupt mask register 613IMS information management system 614INCITS InterNational Committee for Information Technology Standards 615IO input/output 616IOCTL input/output control 617IOMMU input/output memory management unit 618IOT Internet of Things 619IP Internet Protocol 620IP intellectual property 621IPC interprocess communication 622IPE integrated programming environment 623IPI interprocessor interrupt 624IPNG Internet Protocol, Next Generation 625IPS in-plane switching 626IPS intrusion prevention system 627IPSEC Internet Protocol Security 628IRC Internet Relay Chat 629IRDA infrared data association 630IRQ interrupt request 631IRQL interrupt request level 632IRR interrupt request register 633IRTF Internet Research Task Force 634IS information system 635ISA industry standard architecture 636ISA instruction set architecture 637ISDN integrated services digital network 638ISI inter-symbol interference 639ISM industrial, scientific, [and] medical 640ISN initial serial number 641ISO International Standards Organization 642ISOC Internet Society 643ISP Internet service provider 644ISR in-service register 645ISR interrupt service routine 646IST interrupt stack table 647ISV independent software vendor 648IT information technology 649ITB Intel Turbo Boost 650ITIL information technology infrastructure library 651ITSM IT service management 652IV initialization vector 653IVT interrupt vector table 654JBOD just a bunch of disks 655JFET junction [gate] field-effect transistor 656JIT just in time 657JPEG Joint Photographic Experts Group 658JRE Java Runtime Environment 659JTAG joint test action group 660KASLR kernel address space layout randomization 661KB keyboard 662KB kilobyte 663KBD keyboard 664KBD kilobaud 665KLOC thousand lines of code 666KMS kernel-mode setting 667KPI kernel programming interface 668KVA kernel virtual address 669KVM kernel virtual machine 670KVM kernel virtual memory 671KVM keyboard, video, [and] mouse 672LAMP Linux Apache MySQL {Perl,PHP,Python} 673LAN local area network 674LAPIC local advanced programmable interrupt controller 675LAR load access rights 676LBA logical block addressing 677LBS location-based service 678LCD liquid crystal display 679LCP link control protocol 680LDA local delivery agent 681LDAP Lightweight Directory Access Protocol 682LDR light-dependent resistor 683LDT local descriptor table 684LE logical extent 685LED light emitting diode 686LER label edge router 687LF line feed 688LF low frequency 689LFM lowest frequency mode 690LFN long file names 691LFO low-frequency oscillation 692LFS log-structured file system 693LFU least frequently used 694LHP loop heat pipe 695LIFO last in, first out 696LILO LInux LOader 697LILO last in, last out 698LINT local interrupt 699LIR local Internet registry 700LKM {Linux,loadable} kernel module 701LKML Linux kernel mailing list 702LL load linked 703LL/SC load linked/store conditional 704LLC logical link control 705LLDP link layer discovery protocol 706LLF low level format 707LLMNR link-local multicast name resolution 708LLVM Low Level Virtual Machine 709LM long mode 710LMM link management mode 711LNO loop nest optimization 712LOC lines of code 713LOM lights-out management 714LPC low pin count 715LPS local positioning system 716LRC longitudinal redundancy check 717LRM left-to-right mark 718LRO left-to-right override 719LRU least recently used 720LSB Linux standards base 721LSB least significant {bit,byte} 722LSI large scale integration 723LSL load segment limit 724LSN Large Scale NAT 725LSN log sequence number 726LSR label switch router 727LTCC low temperature co-fired ceramic 728LTO linear tape-open 729LTO link time optimization 730LTR left to right 731LTR load task register 732LTR letter(-sized paper) 733LTS long term support 734LUA Lua Uppercase Accident 735LUN logical unit number 736LV logical volume 737LVM logical volume management 738LVT local vector table 739LWP light-weight process 740LZW Lempel Ziv Welch 741MAC mandatory access control 742MAC {media,medium} access control 743MAC message authentication {check,code} 744MADT multiple APIC descriptor table 745MB megabyte 746MBA multi-boot agent 747MBR master boot record 748MBS megabits per second 749MC memory controller 750MCA machine check architecture 751MCA MicroChannel architecture 752MCC multiversion concurrency control 753MCE machine check exception 754MCGA Multi-Color Graphics Array 755MCH memory controller hub 756MCM multi-chip module 757MCQ memory controlled queue 758MD machine-dependent 759MDA mail delivery agent 760MDA Monochrome Display Adapter 761MDRAM multibank dynamic random access memory 762MESI modified, exclusive, shared, invalid 763MFC merge from current 764MFC Microsoft Foundation Classes 765MFM modified frequency modulation 766MI machine-independent 767MIB management information base 768MIC message integrity {check,code} 769MID mobile Internet device 770MIDI musical instrument digital interface 771MIF management information format 772MII media independent interface 773MIM man in the middle 774MIMD multiple instruction, multiple data 775MIME Multipurpose Internet Mail Extensions 776MIMO multiple input multiple output 777MIPS million instructions per second 778MISD multiple instruction, single data 779MIT Massachusetts Institute of Technology 780MITM man in the middle 781ML machine language 782ML machine learning 783ML mailing list 784ML markup language 785ML maximum likelihood 786MLC multi-level cell 787MLD multicast listener discovery 788MLHP micro loop heat pipe 789MMF multi-mode fiber 790MMIC monolithic microwave integrated circuit 791MMIO memory mapped input/output 792MMORPG massive multiplayer online role playing game 793MMU memory management unit 794MMX matrix math extension 795MMX multimedia extension 796MMX multiple math extension 797MO magneto-optical 798MOESI modified, owned, exclusive, shared, invalid 799MOF maximum operating frequency 800MOSFET metal-oxide-semiconductor field-effect transistor 801MOSI modified, owned, shared, invalid 802MP multi-platform 803MP multiplayer 804MP {multiprocessing,multiprocessor} 805MPEG moving picture experts group 806MPI message passing interface 807MPLS Multiprotocol Label Switching 808MPP massively parallel processor 809MPS memory pool system 810MPS multiprocessor specification 811MR modem ready 812MRU most recently used 813MS Microsoft 814MSB most significant {bit,byte} 815MSE mean square error 816MSF minutes seconds frames 817MSI message signaled interrupt 818MSI modified, shared, invalid 819MSR machine state register 820MSS maximum segment size 821MSTP Multiple Spanning Tree Protocol 822MT machine translation 823MTA mail transfer agent 824MTBF mean time between failures 825MTP media transfer protocol 826MTRR memory type range register 827MTTF mean time to failure 828MTU maximum transmission unit 829MUA mail user agent 830MUD multi-user domain 831MVCC multiversion concurrency control 832MWE module width encoding 833MX mail exchange 834NACK negative acknowledgement 835NAN not a number 836NAPT Network Address Port Translation 837NAS network attached storage 838NAT network address translation 839NAV network allocation vector 840NC numerical control 841NCO numerically-controlled oscillator 842NCP Network Control Protocol 843NCQ native command queuing 844ND neighbor discovery 845NDFA nondeterministic finite automaton 846NE numeric error 847NFA nondeterministic finite automaton 848NFC near-field communication 849NFCI no functional change intended 850NFS network file system 851NFV network function virtualization 852NIA next instruction address 853NIC network information center 854NIC network interface card 855NIDS network intrusion detection system 856NIP network interface protocol 857NIPS network intrusion prevention system 858NIS network information service 859NIST National Institute of Standards and Technology 860NLS native language support 861NMI non-maskable interrupt 862NNTP Network News Transfer Protocol 863NOC network operations center 864NOP no operation 865NOS network operating system 866NP nondeterministic polynomial time 867NRZ non-return to zero 868NSA nation-state adversary 869NSA no such agency 870NSA National Security Agency 871NTM non-deterministic Turing machine 872NTP Network Time Protocol 873NUMA non-uniform memory access 874NVRAM non-volatile random access memory 875NW not write-through 876NX no execute 877OAEP optimal asymmetric encryption padding 878OBO off by one 879OBOE off by one error 880OCL object constraint language 881OCR optical character recognition 882ODCM on-demand clock modulation 883ODT on-die termination 884OEM original equipment manufacturer 885OFB output feedback 886OFDM orthogonal frequency division multiplexing 887OFET organic field-effect transistor 888OLAP online analytical processing 889OLE object linking and embedding 890OLTP online transaction processing 891ONFI open nand flash interface 892OO OpenOffice 893OO object oriented 894OOB out of band 895OOE out of order execution 896OOM out of memory 897OOO OpenOffice.org 898OOP object oriented programming 899OOPS object oriented programming systems 900OOSE object oriented software engineering 901OPM operations per minute 902OPS operations per second 903OQL Object Query Language 904ORB object request broker 905ORM object-relational mapping 906OS operating system 907OSD open source definition 908OSF open software foundation 909OSI Open Source Initiative 910OSI open systems interconnection 911OSPF open shortest path first 912OSPM OS power management 913OSS open sound system 914OSS open source software 915OSVW operating system visible workarounds 916OTP one time password 917OTP open telecom platform 918OU organizational unit 919OUI organizationally unique identifier 920OWL Web Ontology Language 921P2P PCI to PCI 922P2P peer to peer 923PA phase accumulator 924PA physical address 925PAAS platform as a service 926PAC phase-amplitude converter 927PAE physical address extension 928PAL phase alternating line 929PAL programmable array logic 930PAM pluggable authentication modules 931PAM pulse amplitude modulation 932PAP password authentication protocol 933PAT page attribute table 934PAT port address translation 935PATA parallel ATA 936PAX portable archive exchange 937PBE pending break encoding 938PBE programming by example 939PC personal computer 940PC program counter 941PCB printed circuit board 942PCB process control block 943PCC Portable C Compiler 944PCD page-level cache disable 945PCE performance-monitor counter enable 946PCI peripheral component interconnect 947PCM phase change memory 948PCM pulse code modulation 949PCMCIA Personal Computer Memory Card International Association 950PCP Port Control Protocol 951PD public domain 952PDA personal digital assistant 953PDA pushdown automaton 954PDAG propositional directed acyclic graph 955PDB power distribution board 956PDF portable document format 957PDM pulse-duration modulation 958PDN pull-down network 959PDP page {descriptor,directory} page 960PDS product data sheet 961PDU protocol data unit 962PE protection enable 963PEAP Protected EAP 964PECI platform environment control interface 965PEP protocol extension protocol 966PER packed encoding rules 967PFS perfect forward secrecy 968PGAS partitioned global address space 969PGE page global enable 970PGP Pretty Good Privacy 971PHB PCI host bridge 972PHP PHP: Hypertext Preprocessor 973PIC position independent code 974PIC programmable interrupt controller 975PICNIC problem in chair, not in computer 976PID process id 977PIE position independent executable 978PIL Priority Interrupt Level 979PIM personal information manager 980PIM platform-independent model 981PIO programmed input/output 982PIPT physically indexed, physically tagged 983PIQ prefetch input queue 984PIT programmable interrupt timer 985PIV personal identity verification 986PKCS public-key cryptography standards 987PKI public key infrastructure 988PLC programmable logic controller 989PLD programmable logic device 990PLL phase locked loop 991PLRU pseudo LRU 992PLTM package level thermal management 993PM power management 994PM {phase,pulse} modulation 995PME power management event 996PMI platform management interrupt 997PMIO port-mapped input/output 998PMT photo-multiplier tube 999PMU power management unit 1000PNG portable network graphics 1001PNP plug and play 1002POE power over ethernet 1003POF probability of failure 1004POP Post Office Protocol 1005POP power on password 1006POSIX Portable Operating System Interface [for Unix] 1007POST power on self test 1008POTS plain old telephone system 1009PP pair programming 1010PPB PCI [to] PCI bridge 1011PPC PowerPC 1012PPI pixels per inch 1013PPM pages per minute 1014PPP Point-to-Point Protocol 1015PPPOA Point-to-Point Protocol over ATM 1016PPPOE Point-to-Point Protocol over Ethernet 1017PPU physics processing unit 1018PRBS pseudorandom bit sequence 1019PRG pseudorandom generator 1020PRF pseudorandom function [family] 1021PRML partial response, maximum likelihood 1022PRN pseudorandom {noise,number} 1023PRNG pseudorandom number generator 1024PROM programmable read only memory 1025PRP pseudorandom permutation 1026PSD power spectral density 1027PSE page size extensions 1028PSK phase shift keying 1029PSK pre-shared key 1030PSTN public switched telephone network 1031PSW program status word 1032PTE page table entry 1033PTLA pseudo top level aggregator 1034PTP page table page 1035PTV perceived target value 1036PU processing unit 1037PUN physical unit number 1038PV physical volume 1039PVG physical volume group 1040PVI protected-mode virtual interrupt 1041PVST Per-VLAN Spanning Tree 1042PWM pulse width modulation 1043PXE preboot execution environment 1044QA quality assurance 1045QAM quadrature amplitude modulation 1046QAM quality assurance management 1047QBE query by example 1048QC quality control 1049QDI quasi delay insensitive 1050QOS quality of service 1051QVL qualified vendor list 1052R/O read only 1053R/W read/write 1054RA receiver address 1055RA remote assistance 1056RA resource affinity 1057RA router advertisement 1058RAD rapid application development 1059RAID redundant array of {independent,inexpensive} disks 1060RAM random access memory 1061RAS reliability, availability and serviceability 1062RAS remote access service 1063RAS restartable atomic sequence 1064RAS row address strobe 1065RBF radial basis function 1066RBT red-black tree 1067RC release candidate 1068RC remote control 1069RCS Revision Control System 1070RCS revision control system 1071RCU read, copy, update 1072RDB Rigid Disk Block 1073RDBMS relational database management system 1074RDF Resource Description Framework 1075RDM relational data model 1076RDMA remote direct memory access 1077RE regular expression 1078REST representational state transfer 1079RF radio frequency 1080RFI radio frequency interference 1081RFO request for ownership 1082RGB red green blue 1083RGBA red green blue alpha 1084RGMII reduced gigabit media independent interface 1085RH read hit 1086RHEL Red Hat Enterprise Linux 1087RHL Red Hat Linux 1088RIB routing information base 1089RIFF Resource Interchange File Format 1090RIP Routing Information Protocol 1091RIR regional Internet registry 1092RISC reduced instruction set {computer,computing} 1093RKM ROM Kernel Manual 1094RLE run length encoding 1095RLL run length limited 1096RLO right-to-left override 1097RM read miss 1098RMI remote method invocation 1099RMO Relaxed Memory Ordering 1100RMPM rapid memory power management 1101RMS root mean square 1102RMW read, modify, write 1103RNG random number generator 1104ROM read only memory 1105RPC remote procedure call 1106RPKI resource PKI 1107RPL requested privilege level 1108RPM revolutions per minute 1109RPN reverse Polish notation 1110RPVST Rapid Per-VLAN Spanning Tree 1111RR random replacement 1112RR round robin 1113RS relay station 1114RSA Rivest, Shamir, [and] Adleman 1115RSIP Realm Specific IP 1116RSN Robust Secure Network 1117RSS really simple syndication 1118RSS residual sum of squares 1119RSTP Rapid Spanning Tree Protocol 1120RT real time 1121RTC real time clock 1122RTC real time computing 1123RTF rich text format 1124RTL register transfer language 1125RTL resistor-transistor logic 1126RTL right to left 1127RTOS real time operating system 1128RTS request to send 1129RTT round trip time 1130RUP rational unified process 1131RW Rabin-Williams 1132RWM read-write memory 1133RX {receive,receiver} 1134S/PDIF Sony/Philips Digital Interface Format 1135SA security advisory 1136SA security association 1137SA source address 1138SA structured analysis 1139SAAS software as a service 1140SACD super audio compact disc 1141SAD security association database 1142SAL system abstraction layer 1143SAM serial access memory 1144SAM sum addressed memory 1145SAN storage area network 1146SAP service access point 1147SAPIC streamlined advanced programmable interrupt controller 1148SASD structured analysis, structured design 1149SASI Shugart Associates System Interface 1150SASL simple authentication [and] security layer 1151SATA serial advanced technology attachment 1152SB sound blaster 1153SBU standard build unit 1154SC store conditional 1155SCA source code analyzer 1156SCADA supervisory control and data acquisition 1157SCC single chip cloud 1158SCC source code control 1159SCCS Source Code Control System 1160SCI scalable coherent interface 1161SCI system control interrupt 1162SCM software configuration management 1163SCM source code management 1164SCM storage-class memory 1165SCP secure copy 1166SCSI Small Computer System Interface 1167SCTP Stream Control Transmission Protocol 1168SDI symbol deinterleave 1169SDK software development kit 1170SDL Simple Declarative Language 1171SDL Simple Direct-media Layer 1172SDLC {software,system,systems} development life cycle 1173SDN software defined networking 1174SDRAM synchronous dynamic random access memory 1175SDS software defined storage 1176SDT syntax-directed translation 1177SEGV segmentation violation 1178SEO search engine optimization 1179SFC sequential function chart 1180SFI simple firmware interface 1181SFI software fault isolation 1182SFTP SSH File Transfer Protocol 1183SFTP Serial File Transfer Protocol 1184SFTP Simple File Transfer Protocol 1185SGMII serial gigabit media independent interface 1186SGRAM synchronous graphics random access memory 1187SHA secure hash algorithm 1188SIDH supersingular isogeny Diffie-Hellman 1189SIEM security information and event management 1190SIFS short inter-frame space 1191SIMD single instruction, multiple data 1192SIMM single inline memory module 1193SIP Session Initiation Protocol 1194SIR signal-to-interference ratio 1195SIR slow infrared 1196SISD single instruction, single data 1197SLC single-level cell 1198SLDRAM synchronous-link dynamic random access memory 1199SLED single large expensive disk 1200SLI scalable link interface 1201SLI scan-line interleave 1202SLOC source lines of code 1203SLRU segmented LRU 1204SMA smart memory access 1205SMAF system management action field 1206SMAP Simple Mail Access Protocol 1207SMAP supervisor mode access prevention 1208SMART self-monitoring analysis and reporting technology 1209SMBIOS System Management BIOS 1210SMC system management controller 1211SMEP supervisor mode execution protection 1212SMF single mode fiber 1213SMI structure of management information 1214SMI system management interrupt 1215SMM system management mode 1216SMP symmetric multiprocessing 1217SMT simultaneous multithreading 1218SMTP Simple Mail Transfer Protocol 1219SMU system management unit 1220SNAP Sub-Network Access Protocol 1221SNMP Simple Network Management Protocol 1222SNR signal-to-noise ratio 1223SOA service oriented architecture 1224SOAP Simple Object Access Protocol 1225SOC system on chip 1226SOF start of frame 1227SOH start of header 1228SOHO small office/home office 1229SOL serial over LAN 1230SP service pack 1231SP stack pointer 1232SPARC scalable processor architecture 1233SPARQL SPARQL Protocol and RDF Query Language 1234SPD security policy database 1235SPD serial presence detect 1236SPDIF Sony/Philips digital interface format 1237SPI serial peripheral interface 1238SPI stateful packet inspection 1239SPL system interrupt priority level 1240SPL spinlock 1241SPMD single process, multiple data 1242SPR special purpose register 1243SPT sectors per track 1244SQA software quality assurance 1245SQL Structured Query Language 1246SRAM static random access memory 1247SRC sample rate conversion 1248SS self-snoop 1249SS stack segment 1250SSA static single assignment 1251SSAP source service access point 1252SSB single-sideband modulation 1253SSD solid state drive 1254SSE streaming SIMD extensions 1255SSFDC solid state floppy disc card 1256SSH secure shell 1257SSI server side includes 1258SSID service set identifier 1259SSL secure sockets layer 1260SSP stack smashing protection 1261STC software thermal control 1262STD state transition diagram 1263STP Spanning Tree Protocol 1264STP shielded twisted pair 1265SUS Single Unix Specification 1266SUT system under test 1267SVG scalable vector graphics 1268SVGA Super Video Graphics Array 1269SVM secure virtual machine 1270SVM support vector machine 1271SVR System V Release 1272SVS Separate Virtual Space 1273SWF Shockwave Flash 1274SWIG simplified wrapper [and] interface generator 1275SYR symbol timing recovery 1276TA test assertion 1277TA transmitter address 1278TAI international atomic time 1279TAO track at once 1280TAOCP The Art of Computer Programming 1281TAP Test Anything Protocol 1282TAS test and set 1283TB terabyte 1284TCB trace capture buffer 1285TCB trusted computing base 1286TCC thermal control circuit 1287TCL tool command language 1288TCP Transmission Control Protocol 1289TCQ tagged command queueing 1290TDC time [to] digital converter 1291TDD test driven development 1292TDD time division duplex 1293TDM time division multiplexing 1294TDMA time division multiple access 1295TDOA time difference of arrival 1296TDP thermal design {point,power} 1297TECO Text Editor and Corrector 1298TFT thin film transistor 1299TFTP Trivial File Transfer Protocol 1300TIAS try it and see 1301TIFF tagged image file format 1302TITS try it to see 1303TK temporal key 1304TKIP Temporal Key Integrity Protocol 1305TLA top level aggregator 1306TLB translation lookaside buffer 1307TLD top level domain 1308TLS thread local storage 1309TLS transport layer security 1310TM Turing machine 1311TM thermal monitor 1312TMDS transition minimized differential signaling 1313TMO timeout 1314TOD time of day 1315TOS terms of service 1316TOS trusted operating system 1317TOS type of service 1318TP transaction processing 1319TPI tracks per inch 1320TPM transactions per minute 1321TPM trusted platform module 1322TPR task priority register 1323TPS transactions per second 1324TPS transmission parameters signaling 1325TR task register 1326TR token ring 1327TRL timing recovery loop 1328TRNG true random number generator 1329TS terminal services 1330TS time series 1331TS time stamp 1332TS transport stream 1333TSC time stamp counter 1334TSD time stamp disable 1335TSL test, set, lock 1336TSO time sharing option 1337TSO Total Store Ordering 1338TSP Time-Stamp Protocol 1339TSP Tunnel Setup Protocol 1340TSP time synchronization protocol 1341TSP traveling salesman problem 1342TSS task state segment 1343TTL time to live 1344TTL transistor-transistor logic 1345TTM translation table maps 1346TTY teletype 1347TUI {terminal,text-based,textual} user interface 1348TX {transmit out,transmitter} 1349TZ time zone 1350UAC user {access,account} control 1351UAF use-after-free 1352UART universal asynchronous receiver/transmitter 1353UAT user acceptance testing 1354UB undefined behavior 1355UC uncacheable 1356UCS uniform-cost search 1357UDMA ultra DMA 1358UDO ultra density optical 1359UDP User Datagram Protocol 1360UEFI unified extensible firmware interface 1361UFS Unix File System 1362UGA universal graphics adapter 1363UI unit interval 1364UI user interface 1365UID unique identifier 1366UID user identifier 1367UL upload 1368UMA uniform memory access 1369UMA upper memory area 1370UMB upper memory block 1371UML unified modeling language 1372UMPC ultra-mobile PC 1373UPNP universal plug and play 1374UPS uninterruptible power supply 1375URI uniform resource identifier 1376URL uniform resource locator 1377URN uniform resource name 1378USART universal synchronous/asynchronous receiver/transmitter 1379USB universal serial bus 1380USWC uncacheable speculative write combining 1381UT unit test 1382UTC coordinated universal time 1383UTP unshielded twisted pair 1384UUCP Unix-to-Unix Copy Protocol 1385UUID universally unique identifier 1386UUOC useless use of cat 1387UUT unit under test 1388UX user experience 1389VA vertical alignment 1390VA virtual address 1391VA volt-ampere 1392VAX virtual address extension 1393VB Visual Basic 1394VCA variable-gain amplifier 1395VCC common collector voltage 1396VCF voltage-controlled filter 1397VCM virtual channel memory 1398VCO voltage-controlled oscillator 1399VCS version control system 1400VESA Video Electronics Standards Association 1401VFO variable-frequency oscillator 1402VG volume group 1403VGA Video Graphics Array 1404VHDCI very high density cable interconnect 1405VID voltage level identifier 1406VIPT virtually indexed, physically tagged 1407VIVT virtually indexed, virtually tagged 1408VLAN virtual local area network 1409VLIW very long instruction word 1410VLSI very large scale integration 1411VLSM variable length subnet mask 1412VM virtual {machine,memory} 1413VME virtual mode extension 1414VMX vector multimedia extensions 1415VMX virtual machine extensions 1416VOD video on demand 1417VPN virtual private network 1418VR virtual reality 1419VRAM video random access memory 1420VRF virtual routing and forwarding 1421VRM voltage regulator module 1422VRRP Virtual Router Redundancy Protocol 1423VSTP VLAN Spanning Tree Protocol 1424VTP VLAN Trunking Protocol 1425W watt 1426W3C World Wide Web Consortium 1427WAN wide area network 1428WAP Wireless Application Protocol 1429WAP wireless access point 1430WDT watchdog timer 1431WEP Wired Equivalent Privacy 1432WFI wait for interrupt 1433WFQ weighted fair queuing 1434WH write hit 1435WIFI wireless fidelity 1436WLAN wireless local area network 1437WM write miss 1438WMI Windows Management Instrumentation 1439WOL Wake-on-LAN 1440WOM Wake-on-Modem 1441WOR Wake-on-Ring 1442WORM write once read many 1443WP WordPerfect 1444WP word processor 1445WP write protect 1446WPA Wi-Fi Protected Access 1447WPA2 Wi-Fi Protected Access II 1448WPS Wi-Fi Protected Setup 1449WRAM window random access memory 1450WS web services 1451WTC write through caching 1452WWAN wireless wide area network 1453WWW world wide web 1454WYSIWYG what you see is what you get 1455XBAR crossbar 1456XDMCP X Display Manager control protocol 1457XER XML encoding rules 1458XGA Extended Graphics Array 1459XIP execute in place 1460XML Extensible Markup Language 1461XOR exclusive or 1462XP extreme programming 1463XSI X/Open System Interface 1464XSL extensible stylesheet language 1465XSS cross site scripting 1466XT extended technology 1467XUL XML user interface language 1468YACC yet another compiler compiler 1469YAWPFAPR you are welcome; please file a problem report 1470YP Yellow Pages 1471YTD year to date 1472ZBR zone bit recording 1473ZFOD zero-filled on demand 1474ZIF zero insertion force 1475ZIFS zero insertion force socket 1476ZMA zone multicast address 1477