acronyms.comp revision 1.196
1$NetBSD: acronyms.comp,v 1.196 2018/05/13 16:53:04 maya 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 59APM application performance management 60APU accelerated processing unit 61APT advanced persistent threat 62AQM active queue management 63ARAT always running APIC timer 64ARC adaptive replacement cache 65ARC automatic reference counting 66ARM Advanced RISC Machines 67ARP Address Resolution Protocol 68ARPA Advanced Research Projects Agency 69ARQ automatic repeat request 70ARR address range register 71ARU audio response unit 72AS autonomous system 73ASC advanced smart cache 74ASCII American Standard Code for Information Interchange 75ASD agile software development 76ASE advanced software environment 77ASIC application-specific integrated circuit 78ASK amplitude shif keying 79ASLR address space layout randomization 80ASN autonomous system number 81ASPM active state power management 82ASQ automated software quality 83ASR address space register 84AST abstract syntax tree 85AST asynchronous trap 86AT access time 87AT advanced technology 88ATA advanced technology attachment 89ATAPI advanced technology attachment packet interface 90ATC address translation cache 91ATM asynchronous transfer mode 92ATX advanced technology extended 93AV anti virus 94AVL Adelson-Velsky-Landis 95AVX advanced vector extensions 96BA byte align 97BAL basic assembly language 98BAR base address register 99BBS bulletin board system 100BCC blind carbon copy 101BCD binary coded decimal 102BCR byte count register 103BCS base configuration space 104BD baud 105BDD binary decision diagram 106BDI bit deinterleave 107BDUF big design up front 108BEDO burst extended data output 109BER basic encoding rules 110BER bit error {rate,ratio} 111BFD binary {file,format} descriptor 112BFKL big fscking kernel lock 113BFS breadth-first search 114BFT binary file transfer 115BGA ball grid array 116BGP Border Gateway Protocol 117BGPSEC BGP Security 118BIND Berkeley Internet Name Daemon 119BIOS Basic Input/Output System 120BIOS built-in operating system 121BIST built-in self-test 122BIU bus interface unit 123BKDG BIOS and kernel developer's guide 124BLAS basic linear algebra subprograms 125BLC back light control 126BLOB binary large object 127BM bus master 128BMC baseboard management controller 129BMIC bus master interface controller 130BN boundary neutral 131BNF Backus-Naur form 132BO binary output 133BOF beginning of file 134BOM beginning of message 135BOM byte order mark 136BP base pointer 137BP boot processor 138BPB BIOS parameter block 139BPDU bridge protocol data unit 140BPF Berkeley Packet Filter 141BPI bits per inch 142BPM business process modelling 143BPS bits per second 144BPSK binary phase shift keying 145BQS Berkeley quality software 146BRE basic regular expression 147BS backspace 148BS binary sequence 149BSA basic service area 150BSD Berkeley Software Distribution 151BSF bit scan forward 152BSOD blue screen of death 153BSP binary space partition 154BSP board support package 155BSP bootstrap processor 156BSR bit scan reverse 157BSS basic service set 158BSS block started by symbol 159BSSID basic service set identifier 160BT BitTorrent 161BT Bluetooth 162BT bit test 163BTC bit test [and] complement 164BTR bit test [and] reset 165BTS bit test [and] set 166BTS bug tracking system 167BW bandwidth 168BWM block-write mode 169CA certificate authority 170CAD computer-aided design 171CAM computer assisted manufacturing 172CAM conditional access module 173CAM content addressable memory 174CARP Common Address Redundancy Protocol 175CAS column address strobe 176CAS compare and swap 177CAS computer algebra system 178CASE computer aided software engineering 179CAU control access unit 180CAV constant angular velocity 181CBC cipher block chaining 182CBR constant bit rate 183CC carbon coby 184CCD charge coupled device 185CCI co-channel interferer 186CCNUMA cache-coherent non-uniform memory access 187CD cache disable 188CD compact disc 189CDDA compact disc digital audio 190CDMA code division multiple access 191CDP Cisco Discovery Protocol 192CDRAM cache dynamic random access memory 193CER canonical encoding rules 194CF compact flash 195CFB cipher feedback 196CFG context-free grammar 197CFG control-flow graph 198CG control gate 199CGA Color Graphics Adapter 200CGI common gateway interface 201CGN Carrier-Grade NAT 202CHAP Challenge-Handshake Authentication Protocol 203CHS cylinder/head/sector 204CI continuous integration 205CI {common,component} interface 206CIDR Classless Inter-Domain Routing 207CIFS Common Internet File System 208CIL common intermediate language 209CIR carrier-to-interference ratio 210CIS contact image sensor 211CISC complex instruction set {computer,computing} 212CJK Chinese, Japanese, [and] Korean 213CLF common log format 214CLI command line interface 215CLR common language runtime 216CLTT closed loop thermal throttling 217CLUT color look-up table 218CLV constant linear velocity 219CM configuration management 220CMA concert multithread architecture 221CMS {configuration,content,course} management system 222CMI control {management,method} interface 223CMOS complementary metal-oxide-semiconductor 224CMP chip multi-processing 225CMS content management system 226CMYK cyan magenta yellow black 227CN {common,canonical} name 228CNC computer numerical control 229CNR carrier-to-noise ratio 230COF current operating frequency 231COFDM coded orthogonal frequency division multiplexing 232COFF common object file format 233COM component object model 234COMA cache-only memory architecture 235CORBA common object request broker architecture 236COW copy-on-write 237CP continuous pilot 238CPB core performance boost 239CPE common phase error 240CPG clock pulse generator 241CPL current privilege level 242CPLD complex programmable logic device 243CPP C preprocessor 244CPS characters per second 245CPT command pass through 246CPU central processing unit 247CR carriage return 248CRC cyclic redundancy check 249CRL carrier recovery loop 250CRLF carriage return line feed 251CRT cathode ray tube 252CS cable select 253CS chip select 254CS code segment 255CS computer science 256CSDL {common,conceptual} schema definition language 257CSI channel state information 258CSI common system interface 259CSMA carrier sense multiple access 260CSMA/CA carrier sense multiple access with collision avoidance 261CSMA/CD carrier sense multiple access with collision detection 262CSR control [and] status registers 263CSRG Computer Systems Research Group 264CSS cascading style sheets 265CSV comma-separated values 266CTM close to metal 267CTR counter [mode] 268CTS clear to send 269CUA common user access 270CUT coordinated universal time 271CV control voltage 272CVE common vulnerabilities and exposures 273CVS Concurrent Versions System 274DA destination address 275DAA distributed application architecture 276DAB digital audio broadcasting 277DAC digital [to] analog converter 278DAC discretionary access control 279DAD duplicate address detection 280DANE DNS-based Authentication of Named Entities 281DAO disk at once 282DAP Directory Access Protocol 283DAT digital audio tape 284DAT dynamic acceleration technology 285DB database 286DBA database administrator 287DBA dynamic bandwidth allocation 288DBB data bus buffer 289DBC design by contract 290DBL dynamic buffer limiting 291DBMS database management system 292DBS database server 293DC direct current 294DCC Direct Client-to-Client 295DCC direct cable connect 296DCD data carrier detect 297DCE data control equipment 298DCE distributed computing environment 299DCOM distributed component object model 300DCOP Desktop COmmunication Protocol 301DCS data collection systems 302DCT discrete cosine transform 303DCU data cache unit 304DDC display data channel 305DDE dynamic data exchange 306DDK device driver kit 307DDL data description language 308DDR double data rate 309DDS direct digital sound 310DDWG Digital Display Working Group 311DE debugging extensions 312DE desktop environment 313DEA data encryption algorithm 314DEK data encryption key 315DEP data execution prevention 316DER distinguished encoding rules 317DES Data Encryption Standard 318DF don't fragment 319DFA deterministic finite automaton 320DFC data flow control 321DFS depth first search 322DFS distributed file system 323DFT diagnostic function test 324DFT discrete Fourier transform 325DGL data generation language 326DH Diffie-Hellman 327DHCP Dynamic Host Configuration Protocol 328DIFS distributed inter-frame space 329DIMM dual inline memory module 330DIRT design in real time 331DL diode logic 332DL discrete logarithm 333DL download 334DLE data link escape 335DLL dynamic link library 336DLP discrete logarithm problem 337DMA direct memory access 338DMI desktop management interface 339DMS document management system 340DMT discrete multitone modulation 341DNARD Digital network appliance reference design 342DND drag and drop 343DNS Domain Name System 344DNSSEC DNS Security Extensions 345DOE distributed object environment 346DOF data over fibre 347DOM document object model 348DOS denial of service 349DOS disk operating system 350DP DisplayPort 351DPC deferred procedure call 352DPCM differential pulse code modulation 353DPD dead peer detection 354DPI deep packet inspection 355DPI dots per inch 356DPL descriptor privilege level 357DPS Display PostScript 358DPST display power savings technology 359DRAAS disaster recovery as a service 360DRAM dynamic random access memory 361DRBG deterministic random bit generator 362DRI direct rendering infrastructure 363DRM digital rights management 364DRRS display refresh rate switching 365DS debug store 366DSA digital signature algorithm 367DSAP destination service access point 368DSB double-sideband modulation 369DSDT differentiated system descriptor table 370DSL digital subscriber line 371DSL domain specific language 372DSLAM digital subscriber line access multiplexer 373DSN delivery status notification 374DSO dynamic shared object 375DSP digital signal processor 376DSSS direct sequence spread spectrum 377DTD document type definition 378DTE data terminal equipment 379DTE dumb terminal emulator 380DTL diode-transistor logic 381DTLS datagram transport layer security 382DTS digital thermal sensor 383DUT device under test 384DVB digital video broadcasting 385DVCS distributed version control system 386DVD digital versatile disc 387DVFS dynamic voltage and frequency scaling 388DVI device independent 389DVI Digital Visual Interface 390DVR digital video recorder 391E-XER extended XML encoding rules 392EABI embedded-application binary interface 393EAI Email Address Internationalization 394EAI Enterprise Application Integration 395EAP Extensible Authentication Protocol 396EAPOL EAP over Lan 397EBCDIC Extended Binary Coded Decimal Interchange Code 398EBR extended boot record 399EC elliptic curve 400ECC elliptic curve cryptography 401ECC error correction code 402ECDH elliptic curve Diffie-Hellman 403ECDL elliptic curve discrete logarithm 404ECDLP elliptic curve discrete logarithm problem 405ECDSA elliptic curve digital signature algorithm 406ECL emitter-coupled logic 407ECN explicit congestion notification 408ECP enhanced capability port 409ECS enhanced chip set 410ECS extended configuration space 411EDAT enhanced dynamic acceleration technology 412EdDSA Edwards curve digital signature algorithm 413EDGE explicit data graph execution 414EDID extended display identification data 415EDO extended data out 416EDS electronical data sheet 417EEE energy efficient ethernet 418EEPROM electrically erasable programmable read only memory 419EFI extensible firmware interface 420EFL emitter follower logic 421EFM eight to fourteen modulation 422EGA Enhanced Graphics Adapter 423EGP exterior gateway protocol 424EH extension header 425EIDE enhanced IDE 426EISA extended industry standard architecture 427ELF executable and linking format 428ELS entry level system 429EMI electro-magnetic interference 430EMP electro-magnetic pulse 431EMR electro-magnetic radiation 432EOF end of file 433EOI end of interrupt 434EOL end of line 435EOT end of transmission 436EPIC explicitly parallel instruction computing 437EPP enhanced parallel port 438EPRML extended partial response, maximum likelihood 439EPROM erasable programmable read only memory 440ERD emergency recovery disk 441ERD entity relationship diagram 442ERE extended regular expression 443ESDRAM enhanced synchronous dynamic random access memory 444ESS electronic switching system 445ESS extended service set 446ESSID extended service set identifier 447EST enhanced speedstep 448ETL extract, transform, load 449EU execution unit 450EULA end user license agreement 451FAT file allocation table 452FBRAM frame buffer random access memory 453FCL fiber channel loop 454FCS frame check sequence 455FDC floppy disk controller 456FDD floppy disk drive 457FDDI fiber distributed data interface 458FDE full disk encryption 459FEA finite element analysis 460FEC forward error correction 461FET field-effect transistor 462FF finite field 463FF form feed 464FFDH finite-field Diffie-Hellman 465FFH functional fixed hardware 466FFI foreign function interface 467FFM focus follows mouse 468FFS Fast File System 469FFS find first set 470FFT fast Fourier transform 471FG floating gate 472FHSS frequency hop spread spectrum 473FID frequency identifier 474FIFO first in, first out 475FILO first in, last out 476FIPS Federal Information Processing Standards 477FIR fast infrared 478FLOPS floating [point] operations per second 479FLOSS free/libre/open source software 480FM frequency modulation 481FMR false match rate 482FOSS free/open source software 483FPGA field programmable gate array 484FPM fast page mode 485FPR floating point register 486FPU floating point unit 487FQDN fully qualified domain name 488FRR false rejection rate 489FRU field replaceable unit 490FS file system 491FSB front side bus 492FSCK file system check 493FSF Free Software Foundation 494FSK frequency shift keying 495FSM finite-state machine 496FTA fault tree analysis 497FTL flash translation layer 498FTP File Transfer Protocol 499FTPS File Transfer Protocol Secure 500FUS fast user switching 501FWH firmware hub 502FWS folding white space 503GAL generic array logic 504GAS generic address structure 505GC garbage collector 506GCM Galois counter mode 507GCR group-coded recording 508GDT global descriptor table 509GEM graphics environment manager 510GEM graphics execution manager 511GENA general event notification architecture 512GHC Glasgow Haskell compiler 513GID group identifier 514GIF graphics interchange format 515GMCH graphics and memory controller hub 516GNU GNU's Not Unix 517GOP graphics output protocol 518GOT global offset table 519GPE general purpose event 520GPF general protection fault 521GPG GNU Privacy Guard 522GPL [GNU] General Public License 523GPR general purpose register 524GPS generalized processor sharing 525GPT GUID partition table 526GPU graphics processing unit 527GR golden ratio 528GRE generic routing encapsulation 529GSI global system interrupt 530GUI graphical user interface 531GUID globally unique identifier 532GVFS git virtual file system 533HA high availability 534HAL hardware abstraction layer 535HAT hashed array tree 536HBA host bus adapter 537HCF halt and catch fire 538HCI host controller interface 539HCI human-computer interaction 540HCL hardware compatibility list 541HDCP High-bandwidth Digital Content Protection 542HDD hard disk drive 543HDL hardware description language 544HDMI High-Definition Multimedia Interface 545HDTV high-definition television 546HF high frequency 547HFM highest frequency mode 548HID human interface device 549HKP HTTP Keyserver Protocol 550HLL high-level language 551HMA high memory area 552HMI human-machine interface 553HOOD hierarchical object oriented design 554HP Hewlett-Packard 555HPC high performance computing 556HPET high precision event timer 557HSM hardware security module 558HSM hierarchical storage management 559HT hyper-threading 560HTC hardware thermal control 561HTCC high temperature co-fired ceramic 562HTML HyperText Markup Language 563HTT hyper-threading technology 564HTTP Hypertext Transfer Protocol 565HTTPS Hypertext Transfer Protocol Secure 566HVM hardware virtual machine 567HZ Hertz 568I2O intelligent input/output 569IA information assurance 570IAAS infrastructure as a service 571IANA Internet Assigned Numbers Authority 572IBC iterated block cipher 573IBM International Business Machines 574IBS instruction based sampling 575IBSS independent basic service set 576IC integrated circuit 577ICA independent computer architecture 578ICB Internet Citizen's Band 579ICE in-circuit emulator 580ICE internal compiler error 581ICH I/O controller hub 582ICMP Internet Control Message Protocol 583ICT information and communications technology 584ICW initialization command word 585IDA Intel dynamic acceleration 586IDCMP Intuition direct communication message port 587IDE integrated development environment 588IDE integrated drive electronics 589IDPS intrusion detection [and] prevention system 590IDRP inter-domain routing protocol 591IDS intrusion detection system 592IDT interrupt descriptor table 593IE Internet Explorer 594IEC International Electrotechnical Commission 595IEEE Institute of Electrical and Electronics Engineers 596IESG Internet Engineering Steering Group 597IETF Internet Engineering Task Force 598IF intermediate frequency 599IFCM isochronous flow control mode 600IFF Interchange File Format 601IFS internal field separator 602IGD Internet gateway device 603IGMP Internet Group Management Protocol 604IGP interior gateway protocol 605IHV independent hardware vendor 606IKE Internet key exchange 607ILM internal loopback mode 608ILOM integrated lights-out management 609ILP instruction level parallelism 610IM instant messaging 611IMAP Internet Message Access Protocol 612IMC integrated memory controller 613IMCR interrupt mode configuration register 614IMR interrupt mask register 615IMS information management system 616INCITS InterNational Committee for Information Technology Standards 617IO input/output 618IOCTL input/output control 619IOMMU input/output memory management unit 620IOT Internet of Things 621IP Internet Protocol 622IP intellectual property 623IPC interprocess communication 624IPE integrated programming environment 625IPI interprocessor interrupt 626IPNG Internet Protocol, Next Generation 627IPS in-plane switching 628IPS intrusion prevention system 629IPSEC Internet Protocol Security 630IRC Internet Relay Chat 631IRDA infrared data association 632IRQ interrupt request 633IRQL interrupt request level 634IRR interrupt request register 635IRTF Internet Research Task Force 636IS information system 637ISA industry standard architecture 638ISA instruction set architecture 639ISDN integrated services digital network 640ISI inter-symbol interference 641ISM industrial, scientific, [and] medical 642ISN initial serial number 643ISO International Standards Organization 644ISOC Internet Society 645ISP Internet service provider 646ISR in-service register 647ISR interrupt service routine 648IST interrupt stack table 649ISV independent software vendor 650IT information technology 651ITB Intel Turbo Boost 652ITIL information technology infrastructure library 653ITSM IT service management 654IV initialization vector 655IVT interrupt vector table 656JBOD just a bunch of disks 657JFET junction [gate] field-effect transistor 658JIT just in time 659JPEG Joint Photographic Experts Group 660JRE Java Runtime Environment 661JTAG joint test action group 662KASLR kernel address space layout randomization 663KB keyboard 664KB kilobyte 665KBD keyboard 666KBD kilobaud 667KLOC thousand lines of code 668KMS kernel-mode setting 669KPI kernel programming interface 670KVA kernel virtual address 671KVM kernel virtual machine 672KVM kernel virtual memory 673KVM keyboard, video, [and] mouse 674LAMP Linux Apache MySQL {Perl,PHP,Python} 675LAN local area network 676LAPIC local advanced programmable interrupt controller 677LAR load access rights 678LBA logical block addressing 679LBS location-based service 680LCD liquid crystal display 681LCP link control protocol 682LDA local delivery agent 683LDAP Lightweight Directory Access Protocol 684LDR light-dependent resistor 685LDT local descriptor table 686LE logical extent 687LED light emitting diode 688LER label edge router 689LF line feed 690LF low frequency 691LFM lowest frequency mode 692LFN long file names 693LFO low-frequency oscillation 694LFS log-structured file system 695LFU least frequently used 696LHP loop heat pipe 697LIFO last in, first out 698LILO LInux LOader 699LILO last in, last out 700LINT local interrupt 701LIR local Internet registry 702LKM {Linux,loadable} kernel module 703LKML Linux kernel mailing list 704LL load linked 705LL/SC load linked/store conditional 706LLC logical link control 707LLDP link layer discovery protocol 708LLF low level format 709LLMNR link-local multicast name resolution 710LLVM Low Level Virtual Machine 711LM long mode 712LMM link management mode 713LNO loop nest optimization 714LOC lines of code 715LOM lights-out management 716LPC low pin count 717LPS local positioning system 718LRC longitudinal redundancy check 719LRM left-to-right mark 720LRO left-to-right override 721LRU least recently used 722LSB Linux standards base 723LSB least significant {bit,byte} 724LSI large scale integration 725LSL load segment limit 726LSN Large Scale NAT 727LSN log sequence number 728LSR label switch router 729LTCC low temperature co-fired ceramic 730LTO linear tape-open 731LTO link time optimization 732LTR left to right 733LTR load task register 734LTR letter(-sized paper) 735LTS long term support 736LUA Lua Uppercase Accident 737LUN logical unit number 738LV logical volume 739LVM logical volume management 740LVT local vector table 741LWP light-weight process 742LZW Lempel Ziv Welch 743MAC mandatory access control 744MAC {media,medium} access control 745MAC message authentication {check,code} 746MADT multiple APIC descriptor table 747MB megabyte 748MBA multi-boot agent 749MBR master boot record 750MBS megabits per second 751MC memory controller 752MCA machine check architecture 753MCA MicroChannel architecture 754MCC multiversion concurrency control 755MCE machine check exception 756MCGA Multi-Color Graphics Array 757MCH memory controller hub 758MCM multi-chip module 759MCQ memory controlled queue 760MD machine-dependent 761MDA mail delivery agent 762MDA Monochrome Display Adapter 763MDRAM multibank dynamic random access memory 764MESI modified, exclusive, shared, invalid 765MFC merge from current 766MFC Microsoft Foundation Classes 767MFM modified frequency modulation 768MI machine-independent 769MIB management information base 770MIC message integrity {check,code} 771MID mobile Internet device 772MIDI musical instrument digital interface 773MIF management information format 774MII media independent interface 775MIM man in the middle 776MIMD multiple instruction, multiple data 777MIME Multipurpose Internet Mail Extensions 778MIMO multiple input multiple output 779MIPS million instructions per second 780MISD multiple instruction, single data 781MIT Massachusetts Institute of Technology 782MITM man in the middle 783ML machine language 784ML machine learning 785ML mailing list 786ML markup language 787ML maximum likelihood 788MLC multi-level cell 789MLD multicast listener discovery 790MLHP micro loop heat pipe 791MMF multi-mode fiber 792MMIC monolithic microwave integrated circuit 793MMIO memory mapped input/output 794MMORPG massive multiplayer online role playing game 795MMU memory management unit 796MMX matrix math extension 797MMX multimedia extension 798MMX multiple math extension 799MO magneto-optical 800MOESI modified, owned, exclusive, shared, invalid 801MOF maximum operating frequency 802MOSFET metal-oxide-semiconductor field-effect transistor 803MOSI modified, owned, shared, invalid 804MP multi-platform 805MP multiplayer 806MP {multiprocessing,multiprocessor} 807MPEG moving picture experts group 808MPI message passing interface 809MPLS Multiprotocol Label Switching 810MPP massively parallel processor 811MPS memory pool system 812MPS multiprocessor specification 813MR modem ready 814MRU most recently used 815MS Microsoft 816MSB most significant {bit,byte} 817MSE mean square error 818MSF minutes seconds frames 819MSI message signaled interrupt 820MSI modified, shared, invalid 821MSR machine state register 822MSS maximum segment size 823MSTP Multiple Spanning Tree Protocol 824MT machine translation 825MTA mail transfer agent 826MTBF mean time between failures 827MTP media transfer protocol 828MTRR memory type range register 829MTTF mean time to failure 830MTU maximum transmission unit 831MUA mail user agent 832MUD multi-user domain 833MVCC multiversion concurrency control 834MWE module width encoding 835MX mail exchange 836NACK negative acknowledgement 837NAN not a number 838NAPT Network Address Port Translation 839NAS network attached storage 840NAT network address translation 841NAV network allocation vector 842NC numerical control 843NCO numerically-controlled oscillator 844NCP Network Control Protocol 845NCQ native command queuing 846ND neighbor discovery 847NDFA nondeterministic finite automaton 848NE numeric error 849NFA nondeterministic finite automaton 850NFC near-field communication 851NFCI no functional change intended 852NFS network file system 853NFV network function virtualization 854NIA next instruction address 855NIC network information center 856NIC network interface card 857NIDS network intrusion detection system 858NIP network interface protocol 859NIPS network intrusion prevention system 860NIS network information service 861NIST National Institute of Standards and Technology 862NLS native language support 863NMI non-maskable interrupt 864NNTP Network News Transfer Protocol 865NOC network operations center 866NOP no operation 867NOS network operating system 868NP nondeterministic polynomial time 869NRZ non-return to zero 870NSA nation-state adversary 871NSA no such agency 872NSA National Security Agency 873NTM non-deterministic Turing machine 874NTP Network Time Protocol 875NUMA non-uniform memory access 876NVRAM non-volatile random access memory 877NW not write-through 878NX no execute 879OAEP optimal asymmetric encryption padding 880OBO off by one 881OBOE off by one error 882OCL object constraint language 883OCR optical character recognition 884ODCM on-demand clock modulation 885ODT on-die termination 886OEM original equipment manufacturer 887OFB output feedback 888OFDM orthogonal frequency division multiplexing 889OFET organic field-effect transistor 890OLAP online analytical processing 891OLE object linking and embedding 892OLTP online transaction processing 893ONFI open nand flash interface 894OO OpenOffice 895OO object oriented 896OOB out of band 897OOE out of order execution 898OOM out of memory 899OOO OpenOffice.org 900OOP object oriented programming 901OOPS object oriented programming systems 902OOSE object oriented software engineering 903OPM operations per minute 904OPS operations per second 905OQL Object Query Language 906ORB object request broker 907ORM object-relational mapping 908OS operating system 909OSD open source definition 910OSF open software foundation 911OSI Open Source Initiative 912OSI open systems interconnection 913OSPF open shortest path first 914OSPM OS power management 915OSS open sound system 916OSS open source software 917OSVW operating system visible workarounds 918OTP one time password 919OTP open telecom platform 920OU organizational unit 921OUI organizationally unique identifier 922OWL Web Ontology Language 923P2P PCI to PCI 924P2P peer to peer 925PA phase accumulator 926PA physical address 927PAAS platform as a service 928PAC phase-amplitude converter 929PAE physical address extension 930PAL phase alternating line 931PAL programmable array logic 932PAM pluggable authentication modules 933PAM pulse amplitude modulation 934PAP password authentication protocol 935PAT page attribute table 936PAT port address translation 937PATA parallel ATA 938PAX portable archive exchange 939PBE pending break encoding 940PBE programming by example 941PC personal computer 942PC program counter 943PCB printed circuit board 944PCB process control block 945PCC Portable C Compiler 946PCD page-level cache disable 947PCE performance-monitor counter enable 948PCI peripheral component interconnect 949PCM phase change memory 950PCM pulse code modulation 951PCMCIA Personal Computer Memory Card International Association 952PCP Port Control Protocol 953PD public domain 954PDA personal digital assistant 955PDA pushdown automaton 956PDAG propositional directed acyclic graph 957PDB power distribution board 958PDF portable document format 959PDM pulse-duration modulation 960PDN pull-down network 961PDP page {descriptor,directory} page 962PDS product data sheet 963PDU protocol data unit 964PE protection enable 965PEAP Protected EAP 966PECI platform environment control interface 967PEP protocol extension protocol 968PER packed encoding rules 969PFS perfect forward secrecy 970PGAS partitioned global address space 971PGE page global enable 972PGP Pretty Good Privacy 973PHB PCI host bridge 974PHP PHP: Hypertext Preprocessor 975PIC position independent code 976PIC programmable interrupt controller 977PICNIC problem in chair, not in computer 978PID process id 979PIE position independent executable 980PIL Priority Interrupt Level 981PIM personal information manager 982PIM platform-independent model 983PIO programmed input/output 984PIPT physically indexed, physically tagged 985PIQ prefetch input queue 986PIT programmable interrupt timer 987PIV personal identity verification 988PKCS public-key cryptography standards 989PKI public key infrastructure 990PLC programmable logic controller 991PLD programmable logic device 992PLL phase locked loop 993PLRU pseudo LRU 994PLTM package level thermal management 995PM power management 996PM {phase,pulse} modulation 997PME power management event 998PMI platform management interrupt 999PMIO port-mapped input/output 1000PMT photo-multiplier tube 1001PMU power management unit 1002PNG portable network graphics 1003PNP plug and play 1004POE power over ethernet 1005POF probability of failure 1006POP Post Office Protocol 1007POP power on password 1008POSIX Portable Operating System Interface [for Unix] 1009POST power on self test 1010POTS plain old telephone system 1011PP pair programming 1012PPB PCI [to] PCI bridge 1013PPC PowerPC 1014PPI pixels per inch 1015PPM pages per minute 1016PPP Point-to-Point Protocol 1017PPPOA Point-to-Point Protocol over ATM 1018PPPOE Point-to-Point Protocol over Ethernet 1019PPU physics processing unit 1020PRBS pseudorandom bit sequence 1021PRG pseudorandom generator 1022PRF pseudorandom function [family] 1023PRML partial response, maximum likelihood 1024PRN pseudorandom {noise,number} 1025PRNG pseudorandom number generator 1026PROM programmable read only memory 1027PRP pseudorandom permutation 1028PSD power spectral density 1029PSE page size extensions 1030PSK phase shift keying 1031PSK pre-shared key 1032PSTN public switched telephone network 1033PSW program status word 1034PTE page table entry 1035PTLA pseudo top level aggregator 1036PTP page table page 1037PTV perceived target value 1038PU processing unit 1039PUN physical unit number 1040PV physical volume 1041PVG physical volume group 1042PVI protected-mode virtual interrupt 1043PVST Per-VLAN Spanning Tree 1044PWM pulse width modulation 1045PXE preboot execution environment 1046QA quality assurance 1047QAM quadrature amplitude modulation 1048QAM quality assurance management 1049QBE query by example 1050QC quality control 1051QDI quasi delay insensitive 1052QOS quality of service 1053QVL qualified vendor list 1054R/O read only 1055R/W read/write 1056RA receiver address 1057RA remote assistance 1058RA resource affinity 1059RA router advertisement 1060RAD rapid application development 1061RAID redundant array of {independent,inexpensive} disks 1062RAM random access memory 1063RAS reliability, availability and serviceability 1064RAS remote access service 1065RAS restartable atomic sequence 1066RAS row address strobe 1067RBF radial basis function 1068RBT red-black tree 1069RC release candidate 1070RC remote control 1071RCS Revision Control System 1072RCS revision control system 1073RCU read, copy, update 1074RDB Rigid Disk Block 1075RDBMS relational database management system 1076RDF Resource Description Framework 1077RDM relational data model 1078RDMA remote direct memory access 1079RE regular expression 1080REST representational state transfer 1081RF radio frequency 1082RFI radio frequency interference 1083RFO request for ownership 1084RGB red green blue 1085RGBA red green blue alpha 1086RGMII reduced gigabit media independent interface 1087RH read hit 1088RHEL Red Hat Enterprise Linux 1089RHL Red Hat Linux 1090RIB routing information base 1091RIFF Resource Interchange File Format 1092RIP Routing Information Protocol 1093RIR regional Internet registry 1094RISC reduced instruction set {computer,computing} 1095RKM ROM Kernel Manual 1096RLE run length encoding 1097RLL run length limited 1098RLO right-to-left override 1099RM read miss 1100RMI remote method invocation 1101RMO Relaxed Memory Ordering 1102RMPM rapid memory power management 1103RMS root mean square 1104RMW read, modify, write 1105RNG random number generator 1106ROM read only memory 1107RPC remote procedure call 1108RPKI resource PKI 1109RPL requested privilege level 1110RPM revolutions per minute 1111RPN reverse Polish notation 1112RPVST Rapid Per-VLAN Spanning Tree 1113RR random replacement 1114RR round robin 1115RS relay station 1116RSA Rivest, Shamir, [and] Adleman 1117RSIP Realm Specific IP 1118RSN Robust Secure Network 1119RSS really simple syndication 1120RSS residual sum of squares 1121RSTP Rapid Spanning Tree Protocol 1122RT real time 1123RTC real time clock 1124RTC real time computing 1125RTF rich text format 1126RTL register transfer language 1127RTL resistor-transistor logic 1128RTL right to left 1129RTOS real time operating system 1130RTS request to send 1131RTT round trip time 1132RUP rational unified process 1133RW Rabin-Williams 1134RWM read-write memory 1135RX {receive,receiver} 1136S/PDIF Sony/Philips Digital Interface Format 1137SA security advisory 1138SA security association 1139SA source address 1140SA structured analysis 1141SAAS software as a service 1142SACD super audio compact disc 1143SAD security association database 1144SAL system abstraction layer 1145SAM serial access memory 1146SAM sum addressed memory 1147SAN storage area network 1148SAP service access point 1149SAPIC streamlined advanced programmable interrupt controller 1150SASD structured analysis, structured design 1151SASI Shugart Associates System Interface 1152SASL simple authentication [and] security layer 1153SATA serial advanced technology attachment 1154SB sound blaster 1155SBU standard build unit 1156SC store conditional 1157SCA source code analyzer 1158SCADA supervisory control and data acquisition 1159SCC single chip cloud 1160SCC source code control 1161SCCS Source Code Control System 1162SCI scalable coherent interface 1163SCI system control interrupt 1164SCM software configuration management 1165SCM source code management 1166SCM storage-class memory 1167SCP secure copy 1168SCSI Small Computer System Interface 1169SCTP Stream Control Transmission Protocol 1170SDI symbol deinterleave 1171SDK software development kit 1172SDL Simple Declarative Language 1173SDL Simple Direct-media Layer 1174SDLC {software,system,systems} development life cycle 1175SDN software defined networking 1176SDRAM synchronous dynamic random access memory 1177SDS software defined storage 1178SDT syntax-directed translation 1179SEGV segmentation violation 1180SEO search engine optimization 1181SFC sequential function chart 1182SFI simple firmware interface 1183SFI software fault isolation 1184SFTP SSH File Transfer Protocol 1185SFTP Serial File Transfer Protocol 1186SFTP Simple File Transfer Protocol 1187SGMII serial gigabit media independent interface 1188SGRAM synchronous graphics random access memory 1189SHA secure hash algorithm 1190SIDH supersingular isogeny Diffie-Hellman 1191SIEM security information and event management 1192SIFS short inter-frame space 1193SIMD single instruction, multiple data 1194SIMM single inline memory module 1195SIP Session Initiation Protocol 1196SIR signal-to-interference ratio 1197SIR slow infrared 1198SISD single instruction, single data 1199SLC single-level cell 1200SLDRAM synchronous-link dynamic random access memory 1201SLED single large expensive disk 1202SLI scalable link interface 1203SLI scan-line interleave 1204SLOC source lines of code 1205SLRU segmented LRU 1206SMA smart memory access 1207SMAF system management action field 1208SMAP Simple Mail Access Protocol 1209SMAP supervisor mode access prevention 1210SMART self-monitoring analysis and reporting technology 1211SMBIOS System Management BIOS 1212SMC system management controller 1213SMEP supervisor mode execution protection 1214SMF single mode fiber 1215SMI structure of management information 1216SMI system management interrupt 1217SMM system management mode 1218SMP symmetric multiprocessing 1219SMT simultaneous multithreading 1220SMTP Simple Mail Transfer Protocol 1221SMU system management unit 1222SNAP Sub-Network Access Protocol 1223SNMP Simple Network Management Protocol 1224SNR signal-to-noise ratio 1225SOA service oriented architecture 1226SOAP Simple Object Access Protocol 1227SOC system on chip 1228SOF start of frame 1229SOH start of header 1230SOHO small office/home office 1231SOL serial over LAN 1232SP service pack 1233SP stack pointer 1234SPARC scalable processor architecture 1235SPARQL SPARQL Protocol and RDF Query Language 1236SPD security policy database 1237SPD serial presence detect 1238SPDIF Sony/Philips digital interface format 1239SPI serial peripheral interface 1240SPI stateful packet inspection 1241SPL system interrupt priority level 1242SPL spinlock 1243SPMD single process, multiple data 1244SPR special purpose register 1245SPT sectors per track 1246SQA software quality assurance 1247SQL Structured Query Language 1248SRAM static random access memory 1249SRC sample rate conversion 1250SS self-snoop 1251SS stack segment 1252SSA static single assignment 1253SSAP source service access point 1254SSB single-sideband modulation 1255SSD solid state drive 1256SSE streaming SIMD extensions 1257SSFDC solid state floppy disc card 1258SSH secure shell 1259SSI server side includes 1260SSID service set identifier 1261SSL secure sockets layer 1262SSP stack smashing protection 1263STC software thermal control 1264STD state transition diagram 1265STP Spanning Tree Protocol 1266STP shielded twisted pair 1267SUS Single Unix Specification 1268SUT system under test 1269SVG scalable vector graphics 1270SVGA Super Video Graphics Array 1271SVM secure virtual machine 1272SVM support vector machine 1273SVR System V Release 1274SVS Separate Virtual Space 1275SWF Shockwave Flash 1276SWIG simplified wrapper [and] interface generator 1277SYR symbol timing recovery 1278TA test assertion 1279TA transmitter address 1280TAI international atomic time 1281TAO track at once 1282TAOCP The Art of Computer Programming 1283TAP Test Anything Protocol 1284TAS test and set 1285TB terabyte 1286TCB trace capture buffer 1287TCB trusted computing base 1288TCC thermal control circuit 1289TCL tool command language 1290TCP Transmission Control Protocol 1291TCQ tagged command queueing 1292TDC time [to] digital converter 1293TDD test driven development 1294TDD time division duplex 1295TDM time division multiplexing 1296TDMA time division multiple access 1297TDOA time difference of arrival 1298TDP thermal design {point,power} 1299TECO Text Editor and Corrector 1300TFT thin film transistor 1301TFTP Trivial File Transfer Protocol 1302TIAS try it and see 1303TIFF tagged image file format 1304TITS try it to see 1305TK temporal key 1306TKIP Temporal Key Integrity Protocol 1307TLA top level aggregator 1308TLB translation lookaside buffer 1309TLD top level domain 1310TLS thread local storage 1311TLS transport layer security 1312TM Turing machine 1313TM thermal monitor 1314TMDS transition minimized differential signaling 1315TMO timeout 1316TOD time of day 1317TOS terms of service 1318TOS trusted operating system 1319TOS type of service 1320TP transaction processing 1321TPI tracks per inch 1322TPM transactions per minute 1323TPM trusted platform module 1324TPR task priority register 1325TPS transactions per second 1326TPS transmission parameters signaling 1327TR task register 1328TR token ring 1329TRL timing recovery loop 1330TRNG true random number generator 1331TS terminal services 1332TS time series 1333TS time stamp 1334TS transport stream 1335TSC time stamp counter 1336TSD time stamp disable 1337TSL test, set, lock 1338TSO time sharing option 1339TSO Total Store Ordering 1340TSP Time-Stamp Protocol 1341TSP Tunnel Setup Protocol 1342TSP time synchronization protocol 1343TSP traveling salesman problem 1344TSS task state segment 1345TTL time to live 1346TTL transistor-transistor logic 1347TTM translation table maps 1348TTY teletype 1349TUI {terminal,text-based,textual} user interface 1350TX {transmit out,transmitter} 1351TZ time zone 1352UAC user {access,account} control 1353UAF use-after-free 1354UART universal asynchronous receiver/transmitter 1355UAT user acceptance testing 1356UB undefined behavior 1357UC uncacheable 1358UCS uniform-cost search 1359UDMA ultra DMA 1360UDO ultra density optical 1361UDP User Datagram Protocol 1362UEFI unified extensible firmware interface 1363UFS Unix File System 1364UGA universal graphics adapter 1365UI unit interval 1366UI user interface 1367UID unique identifier 1368UID user identifier 1369UL upload 1370UMA uniform memory access 1371UMA upper memory area 1372UMB upper memory block 1373UML unified modeling language 1374UMPC ultra-mobile PC 1375UPNP universal plug and play 1376UPS uninterruptible power supply 1377URI uniform resource identifier 1378URL uniform resource locator 1379URN uniform resource name 1380USART universal synchronous/asynchronous receiver/transmitter 1381USB universal serial bus 1382USWC uncacheable speculative write combining 1383UT unit test 1384UTC coordinated universal time 1385UTP unshielded twisted pair 1386UUCP Unix-to-Unix Copy Protocol 1387UUID universally unique identifier 1388UUOC useless use of cat 1389UUT unit under test 1390UX user experience 1391VA vertical alignment 1392VA virtual address 1393VA volt-ampere 1394VAX virtual address extension 1395VB Visual Basic 1396VCA variable-gain amplifier 1397VCC common collector voltage 1398VCF voltage-controlled filter 1399VCM virtual channel memory 1400VCO voltage-controlled oscillator 1401VCS version control system 1402VESA Video Electronics Standards Association 1403VFO variable-frequency oscillator 1404VG volume group 1405VGA Video Graphics Array 1406VHDCI very high density cable interconnect 1407VID voltage level identifier 1408VIPT virtually indexed, physically tagged 1409VIVT virtually indexed, virtually tagged 1410VLAN virtual local area network 1411VLIW very long instruction word 1412VLSI very large scale integration 1413VLSM variable length subnet mask 1414VM virtual {machine,memory} 1415VME virtual mode extension 1416VMX vector multimedia extensions 1417VMX virtual machine extensions 1418VOD video on demand 1419VPN virtual private network 1420VR virtual reality 1421VRAM video random access memory 1422VRF virtual routing and forwarding 1423VRM voltage regulator module 1424VRRP Virtual Router Redundancy Protocol 1425VSTP VLAN Spanning Tree Protocol 1426VTP VLAN Trunking Protocol 1427W watt 1428W3C World Wide Web Consortium 1429WAN wide area network 1430WAP Wireless Application Protocol 1431WAP wireless access point 1432WDT watchdog timer 1433WEP Wired Equivalent Privacy 1434WFI wait for interrupt 1435WFQ weighted fair queuing 1436WH write hit 1437WIFI wireless fidelity 1438WLAN wireless local area network 1439WM write miss 1440WMI Windows Management Instrumentation 1441WOL Wake-on-LAN 1442WOM Wake-on-Modem 1443WOR Wake-on-Ring 1444WORM write once read many 1445WP WordPerfect 1446WP word processor 1447WP write protect 1448WPA Wi-Fi Protected Access 1449WPA2 Wi-Fi Protected Access II 1450WPS Wi-Fi Protected Setup 1451WRAM window random access memory 1452WS web services 1453WTC write through caching 1454WWAN wireless wide area network 1455WWW world wide web 1456WYSIWYG what you see is what you get 1457XBAR crossbar 1458XDMCP X Display Manager control protocol 1459XER XML encoding rules 1460XGA Extended Graphics Array 1461XIP execute in place 1462XML Extensible Markup Language 1463XOR exclusive or 1464XP extreme programming 1465XSI X/Open System Interface 1466XSL extensible stylesheet language 1467XSS cross site scripting 1468XT extended technology 1469XUL XML user interface language 1470YACC yet another compiler compiler 1471YAWPFAPR you are welcome; please file a problem report 1472YP Yellow Pages 1473YTD year to date 1474ZBR zone bit recording 1475ZFOD zero-filled on demand 1476ZFS zettabyte file system 1477ZIF zero insertion force 1478ZIFS zero insertion force socket 1479ZMA zone multicast address 1480