acronyms.comp revision 1.192
1$NetBSD: acronyms.comp,v 1.192 2018/02/19 20:49:01 ginsbach 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 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 547HLL high-level language 548HMA high memory area 549HMI human-machine interface 550HOOD hierarchical object oriented design 551HP Hewlett-Packard 552HPC high performance computing 553HPET high precision event timer 554HSM hardware security module 555HSM hierarchical storage management 556HT hyper-threading 557HTC hardware thermal control 558HTCC high temperature co-fired ceramic 559HTML HyperText Markup Language 560HTT hyper-threading technology 561HTTP Hypertext Transfer Protocol 562HTTPS Hypertext Transfer Protocol Secure 563HVM hardware virtual machine 564HZ Hertz 565I2O intelligent input/output 566IA information assurance 567IAAS infrastructure as a service 568IANA Internet Assigned Numbers Authority 569IBC iterated block cipher 570IBM International Business Machines 571IBS instruction based sampling 572IBSS independent basic service set 573IC integrated circuit 574ICA independent computer architecture 575ICB Internet Citizen's Band 576ICE in-circuit emulator 577ICE internal compiler error 578ICH I/O controller hub 579ICMP Internet Control Message Protocol 580ICT information and communications technology 581ICW initialization command word 582IDA Intel dynamic acceleration 583IDCMP Intuition direct communication message port 584IDE integrated development environment 585IDE integrated drive electronics 586IDPS intrusion detection [and] prevention system 587IDRP inter-domain routing protocol 588IDS intrusion detection system 589IDT interrupt descriptor table 590IE Internet Explorer 591IEC International Electrotechnical Commission 592IEEE Institute of Electrical and Electronics Engineers 593IESG Internet Engineering Steering Group 594IETF Internet Engineering Task Force 595IF intermediate frequency 596IFCM isochronous flow control mode 597IFF Interchange File Format 598IGD Internet gateway device 599IGMP Internet Group Management Protocol 600IGP interior gateway protocol 601IHV independent hardware vendor 602IKE Internet key exchange 603ILM internal loopback mode 604ILOM integrated lights-out management 605ILP instruction level parallelism 606IM instant messaging 607IMAP Internet Message Access Protocol 608IMC integrated memory controller 609IMCR interrupt mode configuration register 610IMR interrupt mask register 611IMS information management system 612INCITS InterNational Committee for Information Technology Standards 613IO input/output 614IOCTL input/output control 615IOMMU input/output memory management unit 616IOT Internet of Things 617IP Internet Protocol 618IP intellectual property 619IPC interprocess communication 620IPE integrated programming environment 621IPI interprocessor interrupt 622IPNG Internet Protocol, Next Generation 623IPS in-plane switching 624IPS intrusion prevention system 625IPSEC Internet Protocol Security 626IRC Internet Relay Chat 627IRDA infrared data association 628IRQ interrupt request 629IRQL interrupt request level 630IRR interrupt request register 631IRTF Internet Research Task Force 632IS information system 633ISA industry standard architecture 634ISA instruction set architecture 635ISDN integrated services digital network 636ISI inter-symbol interference 637ISM industrial, scientific, [and] medical 638ISN initial serial number 639ISO International Standards Organization 640ISOC Internet Society 641ISP Internet service provider 642ISR in-service register 643ISR interrupt service routine 644IST interrupt stack table 645ISV independent software vendor 646IT information technology 647ITB Intel Turbo Boost 648ITIL information technology infrastructure library 649ITSM IT service management 650IV initialization vector 651IVT interrupt vector table 652JBOD just a bunch of disks 653JFET junction [gate] field-effect transistor 654JIT just in time 655JPEG Joint Photographic Experts Group 656JRE Java Runtime Environment 657JTAG joint test action group 658KASLR kernel address space layout randomization 659KB keyboard 660KB kilobyte 661KBD keyboard 662KBD kilobaud 663KLOC thousand lines of code 664KMS kernel-mode setting 665KPI kernel programming interface 666KVA kernel virtual address 667KVM kernel virtual machine 668KVM kernel virtual memory 669KVM keyboard, video, [and] mouse 670LAMP Linux Apache MySQL {Perl,PHP,Python} 671LAN local area network 672LAPIC local advanced programmable interrupt controller 673LAR load access rights 674LBA logical block addressing 675LBS location-based service 676LCD liquid crystal display 677LCP link control protocol 678LDA local delivery agent 679LDAP Lightweight Directory Access Protocol 680LDR light-dependent resistor 681LDT local descriptor table 682LE logical extent 683LED light emitting diode 684LER label edge router 685LF line feed 686LF low frequency 687LFM lowest frequency mode 688LFN long file names 689LFO low-frequency oscillation 690LFS log-structured file system 691LFU least frequently used 692LHP loop heat pipe 693LIFO last in, first out 694LILO LInux LOader 695LILO last in, last out 696LINT local interrupt 697LIR local Internet registry 698LKM {Linux,loadable} kernel module 699LKML Linux kernel mailing list 700LL load linked 701LL/SC load linked/store conditional 702LLC logical link control 703LLDP link layer discovery protocol 704LLF low level format 705LLMNR link-local multicast name resolution 706LLVM Low Level Virtual Machine 707LM long mode 708LMM link management mode 709LNO loop nest optimization 710LOC lines of code 711LOM lights-out management 712LPC low pin count 713LPS local positioning system 714LRC longitudinal redundancy check 715LRM left-to-right mark 716LRO left-to-right override 717LRU least recently used 718LSB Linux standards base 719LSB least significant {bit,byte} 720LSI large scale integration 721LSL load segment limit 722LSN Large Scale NAT 723LSN log sequence number 724LSR label switch router 725LTCC low temperature co-fired ceramic 726LTO link time optimization 727LTR left to right 728LTR load task register 729LTR letter(-sized paper) 730LTS long term support 731LUA Lua Uppercase Accident 732LUN logical unit number 733LV logical volume 734LVM logical volume management 735LVT local vector table 736LWP light-weight process 737LZW Lempel Ziv Welch 738MAC mandatory access control 739MAC {media,medium} access control 740MAC message authentication {check,code} 741MADT multiple APIC descriptor table 742MB megabyte 743MBA multi-boot agent 744MBR master boot record 745MBS megabits per second 746MC memory controller 747MCA machine check architecture 748MCA MicroChannel architecture 749MCC multiversion concurrency control 750MCE machine check exception 751MCGA Multi-Color Graphics Array 752MCH memory controller hub 753MCM multi-chip module 754MCQ memory controlled queue 755MD machine-dependent 756MDA mail delivery agent 757MDA Monochrome Display Adapter 758MDRAM multibank dynamic random access memory 759MESI modified, exclusive, shared, invalid 760MFC merge from current 761MFC Microsoft Foundation Classes 762MFM modified frequency modulation 763MI machine-independent 764MIB management information base 765MIC message integrity {check,code} 766MID mobile Internet device 767MIDI musical instrument digital interface 768MIF management information format 769MII media independent interface 770MIM man in the middle 771MIMD multiple instruction, multiple data 772MIME Multipurpose Internet Mail Extensions 773MIMO multiple input multiple output 774MIPS million instructions per second 775MISD multiple instruction, single data 776MIT Massachusetts Institute of Technology 777MITM man in the middle 778ML machine language 779ML machine learning 780ML mailing list 781ML markup language 782ML maximum likelihood 783MLC multi-level cell 784MLD multicast listener discovery 785MLHP micro loop heat pipe 786MMF multi-mode fiber 787MMIC monolithic microwave integrated circuit 788MMIO memory mapped input/output 789MMORPG massive multiplayer online role playing game 790MMU memory management unit 791MMX matrix math extension 792MMX multimedia extension 793MMX multiple math extension 794MO magneto-optical 795MOESI modified, owned, exclusive, shared, invalid 796MOF maximum operating frequency 797MOSFET metal-oxide-semiconductor field-effect transistor 798MOSI modified, owned, shared, invalid 799MP multi-platform 800MP multiplayer 801MP {multiprocessing,multiprocessor} 802MPEG moving picture experts group 803MPI message passing interface 804MPLS Multiprotocol Label Switching 805MPP massively parallel processor 806MPS memory pool system 807MPS multiprocessor specification 808MR modem ready 809MRU most recently used 810MS Microsoft 811MSB most significant {bit,byte} 812MSE mean square error 813MSF minutes seconds frames 814MSI message signaled interrupt 815MSI modified, shared, invalid 816MSR machine state register 817MSS maximum segment size 818MSTP Multiple Spanning Tree Protocol 819MT machine translation 820MTA mail transfer agent 821MTBF mean time between failures 822MTP media transfer protocol 823MTRR memory type range register 824MTTF mean time to failure 825MTU maximum transmission unit 826MUA mail user agent 827MUD multi-user domain 828MVCC multiversion concurrency control 829MWE module width encoding 830MX mail exchange 831NACK negative acknowledgement 832NAN not a number 833NAPT Network Address Port Translation 834NAS network attached storage 835NAT network address translation 836NAV network allocation vector 837NC numerical control 838NCO numerically-controlled oscillator 839NCP Network Control Protocol 840NCQ native command queuing 841ND neighbor discovery 842NDFA nondeterministic finite automaton 843NE numeric error 844NFA nondeterministic finite automaton 845NFC near-field communication 846NFCI no functional change intended 847NFS network file system 848NFV network function virtualization 849NIA next instruction address 850NIC network information center 851NIC network interface card 852NIDS network intrusion detection system 853NIP network interface protocol 854NIPS network intrusion prevention system 855NIS network information service 856NIST National Institute of Standards and Technology 857NLS native language support 858NMI non-maskable interrupt 859NNTP Network News Transfer Protocol 860NOC network operations center 861NOP no operation 862NOS network operating system 863NP nondeterministic polynomial time 864NRZ non-return to zero 865NSA nation-state adversary 866NSA no such agency 867NSA National Security Agency 868NTM non-deterministic Turing machine 869NTP Network Time Protocol 870NUMA non-uniform memory access 871NVRAM non-volatile random access memory 872NW not write-through 873NX no execute 874OAEP optimal asymmetric encryption padding 875OBO off by one 876OBOE off by one error 877OCL object constraint language 878OCR optical character recognition 879ODCM on-demand clock modulation 880ODT on-die termination 881OEM original equipment manufacturer 882OFB output feedback 883OFDM orthogonal frequency division multiplexing 884OFET organic field-effect transistor 885OLAP online analytical processing 886OLE object linking and embedding 887OLTP online transaction processing 888ONFI open nand flash interface 889OO OpenOffice 890OO object oriented 891OOB out of band 892OOE out of order execution 893OOM out of memory 894OOO OpenOffice.org 895OOP object oriented programming 896OOPS object oriented programming systems 897OOSE object oriented software engineering 898OPM operations per minute 899OPS operations per second 900OQL Object Query Language 901ORB object request broker 902ORM object-relational mapping 903OS operating system 904OSD open source definition 905OSF open software foundation 906OSI Open Source Initiative 907OSI open systems interconnection 908OSPF open shortest path first 909OSPM OS power management 910OSS open sound system 911OSS open source software 912OSVW operating system visible workarounds 913OTP one time password 914OTP open telecom platform 915OU organizational unit 916OUI organizationally unique identifier 917OWL Web Ontology Language 918P2P PCI to PCI 919P2P peer to peer 920PA phase accumulator 921PA physical address 922PAAS platform as a service 923PAC phase-amplitude converter 924PAE physical address extension 925PAL phase alternating line 926PAL programmable array logic 927PAM pluggable authentication modules 928PAM pulse amplitude modulation 929PAP password authentication protocol 930PAT page attribute table 931PAT port address translation 932PATA parallel ATA 933PAX portable archive exchange 934PBE pending break encoding 935PBE programming by example 936PC personal computer 937PC program counter 938PCB printed circuit board 939PCB process control block 940PCC Portable C Compiler 941PCD page-level cache disable 942PCE performance-monitor counter enable 943PCI peripheral component interconnect 944PCM phase change memory 945PCM pulse code modulation 946PCMCIA Personal Computer Memory Card International Association 947PCP Port Control Protocol 948PD public domain 949PDA personal digital assistant 950PDA pushdown automaton 951PDAG propositional directed acyclic graph 952PDB power distribution board 953PDF portable document format 954PDM pulse-duration modulation 955PDN pull-down network 956PDP page {descriptor,directory} page 957PDS product data sheet 958PDU protocol data unit 959PE protection enable 960PEAP Protected EAP 961PECI platform environment control interface 962PEP protocol extension protocol 963PER packed encoding rules 964PFS perfect forward secrecy 965PGAS partitioned global address space 966PGE page global enable 967PGP Pretty Good Privacy 968PHB PCI host bridge 969PHP PHP: Hypertext Preprocessor 970PIC position independent code 971PIC programmable interrupt controller 972PICNIC problem in chair, not in computer 973PID process id 974PIE position independent executable 975PIL Priority Interrupt Level 976PIM personal information manager 977PIM platform-independent model 978PIO programmed input/output 979PIPT physically indexed, physically tagged 980PIQ prefetch input queue 981PIT programmable interrupt timer 982PIV personal identity verification 983PKCS public-key cryptography standards 984PKI public key infrastructure 985PLC programmable logic controller 986PLD programmable logic device 987PLL phase locked loop 988PLRU pseudo LRU 989PLTM package level thermal management 990PM power management 991PM {phase,pulse} modulation 992PME power management event 993PMI platform management interrupt 994PMIO port-mapped input/output 995PMT photo-multiplier tube 996PMU power management unit 997PNG portable network graphics 998PNP plug and play 999POE power over ethernet 1000POF probability of failure 1001POP Post Office Protocol 1002POP power on password 1003POSIX Portable Operating System Interface [for Unix] 1004POST power on self test 1005POTS plain old telephone system 1006PP pair programming 1007PPB PCI [to] PCI bridge 1008PPC PowerPC 1009PPI pixels per inch 1010PPM pages per minute 1011PPP Point-to-Point Protocol 1012PPPOA Point-to-Point Protocol over ATM 1013PPPOE Point-to-Point Protocol over Ethernet 1014PPU physics processing unit 1015PRBS pseudorandom bit sequence 1016PRG pseudorandom generator 1017PRF pseudorandom function [family] 1018PRML partial response, maximum likelihood 1019PRN pseudorandom {noise,number} 1020PRNG pseudorandom number generator 1021PROM programmable read only memory 1022PRP pseudorandom permutation 1023PSD power spectral density 1024PSE page size extensions 1025PSK phase shift keying 1026PSK pre-shared key 1027PSTN public switched telephone network 1028PSW program status word 1029PTE page table entry 1030PTLA pseudo top level aggregator 1031PTP page table page 1032PTV perceived target value 1033PU processing unit 1034PUN physical unit number 1035PV physical volume 1036PVG physical volume group 1037PVI protected-mode virtual interrupt 1038PVST Per-VLAN Spanning Tree 1039PWM pulse width modulation 1040PXE preboot execution environment 1041QA quality assurance 1042QAM quadrature amplitude modulation 1043QAM quality assurance management 1044QBE query by example 1045QC quality control 1046QDI quasi delay insensitive 1047QOS quality of service 1048QVL qualified vendor list 1049R/O read only 1050R/W read/write 1051RA receiver address 1052RA remote assistance 1053RA resource affinity 1054RA router advertisement 1055RAD rapid application development 1056RAID redundant array of {independent,inexpensive} disks 1057RAM random access memory 1058RAS reliability, availability and serviceability 1059RAS remote access service 1060RAS restartable atomic sequence 1061RAS row address strobe 1062RBF radial basis function 1063RBT red-black tree 1064RC release candidate 1065RC remote control 1066RCS Revision Control System 1067RCS revision control system 1068RCU read, copy, update 1069RDB Rigid Disk Block 1070RDBMS relational database management system 1071RDF Resource Description Framework 1072RDM relational data model 1073RDMA remote direct memory access 1074RE regular expression 1075REST representational state transfer 1076RF radio frequency 1077RFI radio frequency interference 1078RFO request for ownership 1079RGB red green blue 1080RGBA red green blue alpha 1081RGMII reduced gigabit media independent interface 1082RH read hit 1083RHEL Red Hat Enterprise Linux 1084RHL Red Hat Linux 1085RIB routing information base 1086RIFF Resource Interchange File Format 1087RIP Routing Information Protocol 1088RIR regional Internet registry 1089RISC reduced instruction set {computer,computing} 1090RKM ROM Kernel Manual 1091RLE run length encoding 1092RLL run length limited 1093RLO right-to-left override 1094RM read miss 1095RMI remote method invocation 1096RMO Relaxed Memory Ordering 1097RMPM rapid memory power management 1098RMS root mean square 1099RMW read, modify, write 1100RNG random number generator 1101ROM read only memory 1102RPC remote procedure call 1103RPKI resource PKI 1104RPL requested privilege level 1105RPM revolutions per minute 1106RPN reverse Polish notation 1107RPVST Rapid Per-VLAN Spanning Tree 1108RR random replacement 1109RR round robin 1110RS relay station 1111RSA Rivest, Shamir, [and] Adleman 1112RSIP Realm Specific IP 1113RSN Robust Secure Network 1114RSS really simple syndication 1115RSS residual sum of squares 1116RSTP Rapid Spanning Tree Protocol 1117RT real time 1118RTC real time clock 1119RTC real time computing 1120RTF rich text format 1121RTL register transfer language 1122RTL resistor-transistor logic 1123RTL right to left 1124RTOS real time operating system 1125RTS request to send 1126RTT round trip time 1127RUP rational unified process 1128RW Rabin-Williams 1129RWM read-write memory 1130RX {receive,receiver} 1131S/PDIF Sony/Philips Digital Interface Format 1132SA security advisory 1133SA security association 1134SA source address 1135SA structured analysis 1136SAAS software as a service 1137SACD super audio compact disc 1138SAD security association database 1139SAL system abstraction layer 1140SAM serial access memory 1141SAM sum addressed memory 1142SAN storage area network 1143SAP service access point 1144SAPIC streamlined advanced programmable interrupt controller 1145SASD structured analysis, structured design 1146SASI Shugart Associates System Interface 1147SASL simple authentication [and] security layer 1148SATA serial advanced technology attachment 1149SB sound blaster 1150SBU standard build unit 1151SC store conditional 1152SCA source code analyzer 1153SCADA supervisory control and data acquisition 1154SCC single chip cloud 1155SCC source code control 1156SCCS Source Code Control System 1157SCI scalable coherent interface 1158SCI system control interrupt 1159SCM software configuration management 1160SCM source code management 1161SCM storage-class memory 1162SCP secure copy 1163SCSI Small Computer System Interface 1164SCTP Stream Control Transmission Protocol 1165SDI symbol deinterleave 1166SDK software development kit 1167SDL Simple Declarative Language 1168SDL Simple Direct-media Layer 1169SDLC {software,system,systems} development life cycle 1170SDN software defined networking 1171SDRAM synchronous dynamic random access memory 1172SDS software defined storage 1173SDT syntax-directed translation 1174SEGV segmentation violation 1175SEO search engine optimization 1176SFC sequential function chart 1177SFI simple firmware interface 1178SFI software fault isolation 1179SFTP SSH File Transfer Protocol 1180SFTP Serial File Transfer Protocol 1181SFTP Simple File Transfer Protocol 1182SGMII serial gigabit media independent interface 1183SGRAM synchronous graphics random access memory 1184SHA secure hash algorithm 1185SIDH supersingular isogeny Diffie-Hellman 1186SIEM security information and event management 1187SIFS short inter-frame space 1188SIMD single instruction, multiple data 1189SIMM single inline memory module 1190SIP Session Initiation Protocol 1191SIR signal-to-interference ratio 1192SIR slow infrared 1193SISD single instruction, single data 1194SLC single-level cell 1195SLDRAM synchronous-link dynamic random access memory 1196SLED single large expensive disk 1197SLI scalable link interface 1198SLI scan-line interleave 1199SLOC source lines of code 1200SLRU segmented LRU 1201SMA smart memory access 1202SMAF system management action field 1203SMAP Simple Mail Access Protocol 1204SMAP supervisor mode access prevention 1205SMART self-monitoring analysis and reporting technology 1206SMBIOS System Management BIOS 1207SMC system management controller 1208SMF single mode fiber 1209SMI structure of management information 1210SMI system management interrupt 1211SMM system management mode 1212SMP symmetric multiprocessing 1213SMT simultaneous multithreading 1214SMTP Simple Mail Transfer Protocol 1215SMU system management unit 1216SNAP Sub-Network Access Protocol 1217SNMP Simple Network Management Protocol 1218SNR signal-to-noise ratio 1219SOA service oriented architecture 1220SOAP Simple Object Access Protocol 1221SOC system on chip 1222SOF start of frame 1223SOH start of header 1224SOHO small office/home office 1225SOL serial over LAN 1226SP service pack 1227SP stack pointer 1228SPARC scalable processor architecture 1229SPARQL SPARQL Protocol and RDF Query Language 1230SPD security policy database 1231SPD serial presence detect 1232SPDIF Sony/Philips digital interface format 1233SPI serial peripheral interface 1234SPI stateful packet inspection 1235SPL system interrupt priority level 1236SPL spinlock 1237SPMD single process, multiple data 1238SPR special purpose register 1239SPT sectors per track 1240SQA software quality assurance 1241SQL Structured Query Language 1242SRAM static random access memory 1243SRC sample rate conversion 1244SS self-snoop 1245SS stack segment 1246SSA static single assignment 1247SSAP source service access point 1248SSB single-sideband modulation 1249SSD solid state drive 1250SSE streaming SIMD extensions 1251SSFDC solid state floppy disc card 1252SSH secure shell 1253SSI server side includes 1254SSID service set identifier 1255SSL secure sockets layer 1256SSP stack smashing protection 1257STC software thermal control 1258STD state transition diagram 1259STP Spanning Tree Protocol 1260STP shielded twisted pair 1261SUS Single Unix Specification 1262SUT system under test 1263SVG scalable vector graphics 1264SVGA Super Video Graphics Array 1265SVM secure virtual machine 1266SVM support vector machine 1267SVR System V Release 1268SVS Separate Virtual Space 1269SWF Shockwave Flash 1270SWIG simplified wrapper [and] interface generator 1271SYR symbol timing recovery 1272TA test assertion 1273TA transmitter address 1274TAI international atomic time 1275TAO track at once 1276TAOCP The Art of Computer Programming 1277TAP Test Anything Protocol 1278TAS test and set 1279TB terabyte 1280TCB trace capture buffer 1281TCB trusted computing base 1282TCC thermal control circuit 1283TCL tool command language 1284TCP Transmission Control Protocol 1285TCQ tagged command queueing 1286TDC time [to] digital converter 1287TDD test driven development 1288TDD time division duplex 1289TDM time division multiplexing 1290TDMA time division multiple access 1291TDOA time difference of arrival 1292TDP thermal design {point,power} 1293TECO Text Editor and Corrector 1294TFT thin film transistor 1295TFTP Trivial File Transfer Protocol 1296TIAS try it and see 1297TIFF tagged image file format 1298TITS try it to see 1299TK temporal key 1300TKIP Temporal Key Integrity Protocol 1301TLA top level aggregator 1302TLB translation lookaside buffer 1303TLD top level domain 1304TLS thread local storage 1305TLS transport layer security 1306TM Turing machine 1307TM thermal monitor 1308TMDS transition minimized differential signaling 1309TMO timeout 1310TOD time of day 1311TOS terms of service 1312TOS trusted operating system 1313TOS type of service 1314TP transaction processing 1315TPI tracks per inch 1316TPM transactions per minute 1317TPM trusted platform module 1318TPR task priority register 1319TPS transactions per second 1320TPS transmission parameters signaling 1321TR task register 1322TR token ring 1323TRL timing recovery loop 1324TRNG true random number generator 1325TS terminal services 1326TS time series 1327TS time stamp 1328TS transport stream 1329TSC time stamp counter 1330TSD time stamp disable 1331TSL test, set, lock 1332TSO time sharing option 1333TSO Total Store Ordering 1334TSP Time-Stamp Protocol 1335TSP Tunnel Setup Protocol 1336TSP time synchronization protocol 1337TSP traveling salesman problem 1338TSS task state segment 1339TTL time to live 1340TTL transistor-transistor logic 1341TTM translation table maps 1342TTY teletype 1343TUI {terminal,text-based,textual} user interface 1344TX {transmit out,transmitter} 1345TZ time zone 1346UAC user {access,account} control 1347UAF use-after-free 1348UART universal asynchronous receiver/transmitter 1349UAT user acceptance testing 1350UB undefined behavior 1351UC uncacheable 1352UCS uniform-cost search 1353UDMA ultra DMA 1354UDO ultra density optical 1355UDP User Datagram Protocol 1356UEFI unified extensible firmware interface 1357UFS Unix File System 1358UGA universal graphics adapter 1359UI unit interval 1360UI user interface 1361UID unique identifier 1362UID user identifier 1363UL upload 1364UMA uniform memory access 1365UMA upper memory area 1366UMB upper memory block 1367UML unified modeling language 1368UMPC ultra-mobile PC 1369UPNP universal plug and play 1370UPS uninterruptible power supply 1371URI uniform resource identifier 1372URL uniform resource locator 1373URN uniform resource name 1374USART universal synchronous/asynchronous receiver/transmitter 1375USB universal serial bus 1376USWC uncacheable speculative write combining 1377UT unit test 1378UTC coordinated universal time 1379UTP unshielded twisted pair 1380UUCP Unix-to-Unix Copy Protocol 1381UUID universally unique identifier 1382UUOC useless use of cat 1383UUT unit under test 1384UX user experience 1385VA vertical alignment 1386VA virtual address 1387VA volt-ampere 1388VAX virtual address extension 1389VB Visual Basic 1390VCA variable-gain amplifier 1391VCC common collector voltage 1392VCF voltage-controlled filter 1393VCM virtual channel memory 1394VCO voltage-controlled oscillator 1395VCS version control system 1396VESA Video Electronics Standards Association 1397VFO variable-frequency oscillator 1398VG volume group 1399VGA Video Graphics Array 1400VHDCI very high density cable interconnect 1401VID voltage level identifier 1402VIPT virtually indexed, physically tagged 1403VIVT virtually indexed, virtually tagged 1404VLAN virtual local area network 1405VLIW very long instruction word 1406VLSI very large scale integration 1407VLSM variable length subnet mask 1408VM virtual {machine,memory} 1409VME virtual mode extension 1410VMX vector multimedia extensions 1411VMX virtual machine extensions 1412VOD video on demand 1413VPN virtual private network 1414VR virtual reality 1415VRAM video random access memory 1416VRF virtual routing and forwarding 1417VRM voltage regulator module 1418VRRP Virtual Router Redundancy Protocol 1419VSTP VLAN Spanning Tree Protocol 1420VTP VLAN Trunking Protocol 1421W watt 1422W3C World Wide Web Consortium 1423WAN wide area network 1424WAP Wireless Application Protocol 1425WAP wireless access point 1426WDT watchdog timer 1427WEP Wired Equivalent Privacy 1428WFI wait for interrupt 1429WFQ weighted fair queuing 1430WH write hit 1431WIFI wireless fidelity 1432WLAN wireless local area network 1433WM write miss 1434WMI Windows Management Instrumentation 1435WOL Wake-on-LAN 1436WOM Wake-on-Modem 1437WOR Wake-on-Ring 1438WORM write once read many 1439WP WordPerfect 1440WP word processor 1441WP write protect 1442WPA Wi-Fi Protected Access 1443WPA2 Wi-Fi Protected Access II 1444WPS Wi-Fi Protected Setup 1445WRAM window random access memory 1446WS web services 1447WTC write through caching 1448WWAN wireless wide area network 1449WWW world wide web 1450WYSIWYG what you see is what you get 1451XBAR crossbar 1452XDMCP X Display Manager control protocol 1453XER XML encoding rules 1454XGA Extended Graphics Array 1455XIP execute in place 1456XML Extensible Markup Language 1457XOR exclusive or 1458XP extreme programming 1459XSI X/Open System Interface 1460XSL extensible stylesheet language 1461XSS cross site scripting 1462XT extended technology 1463XUL XML user interface language 1464YACC yet another compiler compiler 1465YAWPFAPR you are welcome; please file a problem report 1466YP Yellow Pages 1467YTD year to date 1468ZBR zone bit recording 1469ZFOD zero-filled on demand 1470ZIF zero insertion force 1471ZIFS zero insertion force socket 1472ZMA zone multicast address 1473