acronyms.comp revision 1.197
1$NetBSD: acronyms.comp,v 1.197 2018/05/13 18:52:00 sevan Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABI application binary interface 8ABR available bit rate 9AC alternating current 10ACI adjacent channel interferer 11ACID atomicity, consistency, isolation, durability 12ACK Amsterdam compiler kit 13ACK acknowledgement 14ACL access control list 15ACL active current loop 16ACP auxillary control {process,program} 17ACPI advanced configuration and power interface 18ACS access control set 19ACU automatic calling unit 20ADB Apple desktop bus 21ADC analog [to] digital converter 22ADD acronym driven development 23ADO active data objects 24ADP automatic data processing 25ADPCM adaptive differential pulse code modulation 26ADS alternate data stream 27ADSL asymmetric digital subscriber line 28ADT abstract data type 29AES Advanced Encryption Standard 30AFS Andrew File System 31AGC automatic gain control 32AGP accelerated graphics port 33AI analog input 34AI artificial intelligence 35AL access list 36AL active link 37ALE address latch enable 38ALS ambient light sensor 39ALU arithmetic and logical unit 40ALUA asymmetric logical unit access 41AM access method 42AM alignment mask 43AM amplitude modulation 44AMI alternate mark inversion 45AMP asymmetric multiprocessing 46AMQP advanced message queuing protocol 47AMT active management technology 48AN Arabic number 49ANR application not responding 50ANSI American National Standards Institute 51AO analog output 52AOL Alert-on-LAN 53AOS add or subtract 54AP access point 55AP application processor 56API application programming interface 57APIC advanced programmable interrupt controller 58APIPA automatic private IP addressing 59APM advanced power management 60APM application performance management 61APU accelerated processing unit 62APT advanced persistent threat 63AQM active queue management 64ARAT always running APIC timer 65ARC adaptive replacement cache 66ARC automatic reference counting 67ARM Advanced RISC Machines 68ARP Address Resolution Protocol 69ARPA Advanced Research Projects Agency 70ARQ automatic repeat request 71ARR address range register 72ARU audio response unit 73AS autonomous system 74ASC advanced smart cache 75ASCII American Standard Code for Information Interchange 76ASD agile software development 77ASE advanced software environment 78ASIC application-specific integrated circuit 79ASK amplitude shif keying 80ASLR address space layout randomization 81ASN autonomous system number 82ASPM active state power management 83ASQ automated software quality 84ASR address space register 85AST abstract syntax tree 86AST asynchronous trap 87AT access time 88AT advanced technology 89ATA advanced technology attachment 90ATAPI advanced technology attachment packet interface 91ATC address translation cache 92ATM asynchronous transfer mode 93ATX advanced technology extended 94AV anti virus 95AVL Adelson-Velsky-Landis 96AVX advanced vector extensions 97BA byte align 98BAL basic assembly language 99BAR base address register 100BBS bulletin board system 101BCC blind carbon copy 102BCD binary coded decimal 103BCR byte count register 104BCS base configuration space 105BD baud 106BDD binary decision diagram 107BDI bit deinterleave 108BDUF big design up front 109BEDO burst extended data output 110BER basic encoding rules 111BER bit error {rate,ratio} 112BFD binary {file,format} descriptor 113BFKL big fscking kernel lock 114BFS breadth-first search 115BFT binary file transfer 116BGA ball grid array 117BGP Border Gateway Protocol 118BGPSEC BGP Security 119BIND Berkeley Internet Name Daemon 120BIOS Basic Input/Output System 121BIOS built-in operating system 122BIST built-in self-test 123BIU bus interface unit 124BKDG BIOS and kernel developer's guide 125BLAS basic linear algebra subprograms 126BLC back light control 127BLOB binary large object 128BM bus master 129BMC baseboard management controller 130BMIC bus master interface controller 131BN boundary neutral 132BNF Backus-Naur form 133BO binary output 134BOF beginning of file 135BOM beginning of message 136BOM byte order mark 137BP base pointer 138BP boot processor 139BPB BIOS parameter block 140BPDU bridge protocol data unit 141BPF Berkeley Packet Filter 142BPI bits per inch 143BPM business process modelling 144BPS bits per second 145BPSK binary phase shift keying 146BQS Berkeley quality software 147BRE basic regular expression 148BS backspace 149BS binary sequence 150BSA basic service area 151BSD Berkeley Software Distribution 152BSF bit scan forward 153BSOD blue screen of death 154BSP binary space partition 155BSP board support package 156BSP bootstrap processor 157BSR bit scan reverse 158BSS basic service set 159BSS block started by symbol 160BSSID basic service set identifier 161BT BitTorrent 162BT Bluetooth 163BT bit test 164BTC bit test [and] complement 165BTR bit test [and] reset 166BTS bit test [and] set 167BTS bug tracking system 168BW bandwidth 169BWM block-write mode 170CA certificate authority 171CAD computer-aided design 172CAM computer assisted manufacturing 173CAM conditional access module 174CAM content addressable memory 175CARP Common Address Redundancy Protocol 176CAS column address strobe 177CAS compare and swap 178CAS computer algebra system 179CASE computer aided software engineering 180CAU control access unit 181CAV constant angular velocity 182CBC cipher block chaining 183CBR constant bit rate 184CC carbon coby 185CCD charge coupled device 186CCI co-channel interferer 187CCNUMA cache-coherent non-uniform memory access 188CD cache disable 189CD compact disc 190CDDA compact disc digital audio 191CDMA code division multiple access 192CDP Cisco Discovery Protocol 193CDRAM cache dynamic random access memory 194CER canonical encoding rules 195CF compact flash 196CFB cipher feedback 197CFG context-free grammar 198CFG control-flow graph 199CG control gate 200CGA Color Graphics Adapter 201CGI common gateway interface 202CGN Carrier-Grade NAT 203CHAP Challenge-Handshake Authentication Protocol 204CHS cylinder/head/sector 205CI continuous integration 206CI {common,component} interface 207CIDR Classless Inter-Domain Routing 208CIFS Common Internet File System 209CIL common intermediate language 210CIR carrier-to-interference ratio 211CIS contact image sensor 212CISC complex instruction set {computer,computing} 213CJK Chinese, Japanese, [and] Korean 214CLF common log format 215CLI command line interface 216CLR common language runtime 217CLTT closed loop thermal throttling 218CLUT color look-up table 219CLV constant linear velocity 220CM configuration management 221CMA concert multithread architecture 222CMS {configuration,content,course} management system 223CMI control {management,method} interface 224CMOS complementary metal-oxide-semiconductor 225CMP chip multi-processing 226CMS content management system 227CMYK cyan magenta yellow black 228CN {common,canonical} name 229CNC computer numerical control 230CNR carrier-to-noise ratio 231COF current operating frequency 232COFDM coded orthogonal frequency division multiplexing 233COFF common object file format 234COM component object model 235COMA cache-only memory architecture 236CORBA common object request broker architecture 237COW copy-on-write 238CP continuous pilot 239CPB core performance boost 240CPE common phase error 241CPG clock pulse generator 242CPL current privilege level 243CPLD complex programmable logic device 244CPP C preprocessor 245CPS characters per second 246CPT command pass through 247CPU central processing unit 248CR carriage return 249CRC cyclic redundancy check 250CRL carrier recovery loop 251CRLF carriage return line feed 252CRT cathode ray tube 253CS cable select 254CS chip select 255CS code segment 256CS computer science 257CSDL {common,conceptual} schema definition language 258CSI channel state information 259CSI common system interface 260CSMA carrier sense multiple access 261CSMA/CA carrier sense multiple access with collision avoidance 262CSMA/CD carrier sense multiple access with collision detection 263CSR control [and] status registers 264CSRG Computer Systems Research Group 265CSS cascading style sheets 266CSV comma-separated values 267CTM close to metal 268CTR counter [mode] 269CTS clear to send 270CUA common user access 271CUT coordinated universal time 272CV control voltage 273CVE common vulnerabilities and exposures 274CVS Concurrent Versions System 275DA destination address 276DAA distributed application architecture 277DAB digital audio broadcasting 278DAC digital [to] analog converter 279DAC discretionary access control 280DAD duplicate address detection 281DANE DNS-based Authentication of Named Entities 282DAO disk at once 283DAP Directory Access Protocol 284DAT digital audio tape 285DAT dynamic acceleration technology 286DB database 287DBA database administrator 288DBA dynamic bandwidth allocation 289DBB data bus buffer 290DBC design by contract 291DBL dynamic buffer limiting 292DBMS database management system 293DBS database server 294DC direct current 295DCC Direct Client-to-Client 296DCC direct cable connect 297DCD data carrier detect 298DCE data control equipment 299DCE distributed computing environment 300DCOM distributed component object model 301DCOP Desktop COmmunication Protocol 302DCS data collection systems 303DCT discrete cosine transform 304DCU data cache unit 305DDC display data channel 306DDE dynamic data exchange 307DDK device driver kit 308DDL data description language 309DDR double data rate 310DDS direct digital sound 311DDWG Digital Display Working Group 312DE debugging extensions 313DE desktop environment 314DEA data encryption algorithm 315DEK data encryption key 316DEP data execution prevention 317DER distinguished encoding rules 318DES Data Encryption Standard 319DF don't fragment 320DFA deterministic finite automaton 321DFC data flow control 322DFS depth first search 323DFS distributed file system 324DFT diagnostic function test 325DFT discrete Fourier transform 326DGL data generation language 327DH Diffie-Hellman 328DHCP Dynamic Host Configuration Protocol 329DIFS distributed inter-frame space 330DIMM dual inline memory module 331DIRT design in real time 332DL diode logic 333DL discrete logarithm 334DL download 335DLE data link escape 336DLL dynamic link library 337DLP discrete logarithm problem 338DMA direct memory access 339DMI desktop management interface 340DMS document management system 341DMT discrete multitone modulation 342DNARD Digital network appliance reference design 343DND drag and drop 344DNS Domain Name System 345DNSSEC DNS Security Extensions 346DOE distributed object environment 347DOF data over fibre 348DOM document object model 349DOS denial of service 350DOS disk operating system 351DP DisplayPort 352DPC deferred procedure call 353DPCM differential pulse code modulation 354DPD dead peer detection 355DPI deep packet inspection 356DPI dots per inch 357DPL descriptor privilege level 358DPS Display PostScript 359DPST display power savings technology 360DRAAS disaster recovery as a service 361DRAM dynamic random access memory 362DRBG deterministic random bit generator 363DRI direct rendering infrastructure 364DRM digital rights management 365DRRS display refresh rate switching 366DS debug store 367DSA digital signature algorithm 368DSAP destination service access point 369DSB double-sideband modulation 370DSDT differentiated system descriptor table 371DSL digital subscriber line 372DSL domain specific language 373DSLAM digital subscriber line access multiplexer 374DSN delivery status notification 375DSO dynamic shared object 376DSP digital signal processor 377DSSS direct sequence spread spectrum 378DTD document type definition 379DTE data terminal equipment 380DTE dumb terminal emulator 381DTL diode-transistor logic 382DTLS datagram transport layer security 383DTS digital thermal sensor 384DUT device under test 385DVB digital video broadcasting 386DVCS distributed version control system 387DVD digital versatile disc 388DVFS dynamic voltage and frequency scaling 389DVI device independent 390DVI Digital Visual Interface 391DVR digital video recorder 392E-XER extended XML encoding rules 393EABI embedded-application binary interface 394EAI Email Address Internationalization 395EAI Enterprise Application Integration 396EAP Extensible Authentication Protocol 397EAPOL EAP over Lan 398EBCDIC Extended Binary Coded Decimal Interchange Code 399EBR extended boot record 400EC elliptic curve 401ECC elliptic curve cryptography 402ECC error correction code 403ECDH elliptic curve Diffie-Hellman 404ECDL elliptic curve discrete logarithm 405ECDLP elliptic curve discrete logarithm problem 406ECDSA elliptic curve digital signature algorithm 407ECL emitter-coupled logic 408ECN explicit congestion notification 409ECP enhanced capability port 410ECS enhanced chip set 411ECS extended configuration space 412EDAT enhanced dynamic acceleration technology 413EdDSA Edwards curve digital signature algorithm 414EDGE explicit data graph execution 415EDID extended display identification data 416EDO extended data out 417EDS electronical data sheet 418EEE energy efficient ethernet 419EEPROM electrically erasable programmable read only memory 420EFI extensible firmware interface 421EFL emitter follower logic 422EFM eight to fourteen modulation 423EGA Enhanced Graphics Adapter 424EGP exterior gateway protocol 425EH extension header 426EIDE enhanced IDE 427EISA extended industry standard architecture 428ELF executable and linking format 429ELS entry level system 430EMI electro-magnetic interference 431EMP electro-magnetic pulse 432EMR electro-magnetic radiation 433EOF end of file 434EOI end of interrupt 435EOL end of line 436EOT end of transmission 437EPIC explicitly parallel instruction computing 438EPP enhanced parallel port 439EPRML extended partial response, maximum likelihood 440EPROM erasable programmable read only memory 441ERD emergency recovery disk 442ERD entity relationship diagram 443ERE extended regular expression 444ESDRAM enhanced synchronous dynamic random access memory 445ESS electronic switching system 446ESS extended service set 447ESSID extended service set identifier 448EST enhanced speedstep 449ETL extract, transform, load 450EU execution unit 451EULA end user license agreement 452FAT file allocation table 453FBRAM frame buffer random access memory 454FCL fiber channel loop 455FCS frame check sequence 456FDC floppy disk controller 457FDD floppy disk drive 458FDDI fiber distributed data interface 459FDE full disk encryption 460FEA finite element analysis 461FEC forward error correction 462FET field-effect transistor 463FF finite field 464FF form feed 465FFDH finite-field Diffie-Hellman 466FFH functional fixed hardware 467FFI foreign function interface 468FFM focus follows mouse 469FFS Fast File System 470FFS find first set 471FFT fast Fourier transform 472FG floating gate 473FHSS frequency hop spread spectrum 474FID frequency identifier 475FIFO first in, first out 476FILO first in, last out 477FIPS Federal Information Processing Standards 478FIR fast infrared 479FLOPS floating [point] operations per second 480FLOSS free/libre/open source software 481FM frequency modulation 482FMR false match rate 483FOSS free/open source software 484FPGA field programmable gate array 485FPM fast page mode 486FPR floating point register 487FPU floating point unit 488FQDN fully qualified domain name 489FRR false rejection rate 490FRU field replaceable unit 491FS file system 492FSB front side bus 493FSCK file system check 494FSF Free Software Foundation 495FSK frequency shift keying 496FSM finite-state machine 497FTA fault tree analysis 498FTL flash translation layer 499FTP File Transfer Protocol 500FTPS File Transfer Protocol Secure 501FUS fast user switching 502FWH firmware hub 503FWS folding white space 504GAL generic array logic 505GAS generic address structure 506GC garbage collector 507GCM Galois counter mode 508GCR group-coded recording 509GDT global descriptor table 510GEM graphics environment manager 511GEM graphics execution manager 512GENA general event notification architecture 513GHC Glasgow Haskell compiler 514GID group identifier 515GIF graphics interchange format 516GMCH graphics and memory controller hub 517GNU GNU's Not Unix 518GOP graphics output protocol 519GOT global offset table 520GPE general purpose event 521GPF general protection fault 522GPG GNU Privacy Guard 523GPL [GNU] General Public License 524GPR general purpose register 525GPS generalized processor sharing 526GPT GUID partition table 527GPU graphics processing unit 528GR golden ratio 529GRE generic routing encapsulation 530GSI global system interrupt 531GUI graphical user interface 532GUID globally unique identifier 533GVFS git virtual file system 534HA high availability 535HAL hardware abstraction layer 536HAT hashed array tree 537HBA host bus adapter 538HCF halt and catch fire 539HCI host controller interface 540HCI human-computer interaction 541HCL hardware compatibility list 542HDCP High-bandwidth Digital Content Protection 543HDD hard disk drive 544HDL hardware description language 545HDMI High-Definition Multimedia Interface 546HDTV high-definition television 547HF high frequency 548HFM highest frequency mode 549HID human interface device 550HKP HTTP Keyserver Protocol 551HLL high-level language 552HMA high memory area 553HMI human-machine interface 554HOOD hierarchical object oriented design 555HP Hewlett-Packard 556HPC high performance computing 557HPET high precision event timer 558HSM hardware security module 559HSM hierarchical storage management 560HT hyper-threading 561HTC hardware thermal control 562HTCC high temperature co-fired ceramic 563HTML HyperText Markup Language 564HTT hyper-threading technology 565HTTP Hypertext Transfer Protocol 566HTTPS Hypertext Transfer Protocol Secure 567HVM hardware virtual machine 568HZ Hertz 569I2O intelligent input/output 570IA information assurance 571IAAS infrastructure as a service 572IANA Internet Assigned Numbers Authority 573IBC iterated block cipher 574IBM International Business Machines 575IBS instruction based sampling 576IBSS independent basic service set 577IC integrated circuit 578ICA independent computer architecture 579ICB Internet Citizen's Band 580ICE in-circuit emulator 581ICE internal compiler error 582ICH I/O controller hub 583ICMP Internet Control Message Protocol 584ICT information and communications technology 585ICW initialization command word 586IDA Intel dynamic acceleration 587IDCMP Intuition direct communication message port 588IDE integrated development environment 589IDE integrated drive electronics 590IDPS intrusion detection [and] prevention system 591IDRP inter-domain routing protocol 592IDS intrusion detection system 593IDT interrupt descriptor table 594IE Internet Explorer 595IEC International Electrotechnical Commission 596IEEE Institute of Electrical and Electronics Engineers 597IESG Internet Engineering Steering Group 598IETF Internet Engineering Task Force 599IF intermediate frequency 600IFCM isochronous flow control mode 601IFF Interchange File Format 602IFS internal field separator 603IGD Internet gateway device 604IGMP Internet Group Management Protocol 605IGP interior gateway protocol 606IHV independent hardware vendor 607IKE Internet key exchange 608ILM internal loopback mode 609ILOM integrated lights-out management 610ILP instruction level parallelism 611IM instant messaging 612IMAP Internet Message Access Protocol 613IMC integrated memory controller 614IMCR interrupt mode configuration register 615IMR interrupt mask register 616IMS information management system 617INCITS InterNational Committee for Information Technology Standards 618IO input/output 619IOCTL input/output control 620IOMMU input/output memory management unit 621IOT Internet of Things 622IP Internet Protocol 623IP intellectual property 624IPC interprocess communication 625IPE integrated programming environment 626IPI interprocessor interrupt 627IPNG Internet Protocol, Next Generation 628IPS in-plane switching 629IPS intrusion prevention system 630IPSEC Internet Protocol Security 631IRC Internet Relay Chat 632IRDA infrared data association 633IRQ interrupt request 634IRQL interrupt request level 635IRR interrupt request register 636IRTF Internet Research Task Force 637IS information system 638ISA industry standard architecture 639ISA instruction set architecture 640ISDN integrated services digital network 641ISI inter-symbol interference 642ISM industrial, scientific, [and] medical 643ISN initial serial number 644ISO International Standards Organization 645ISOC Internet Society 646ISP Internet service provider 647ISR in-service register 648ISR interrupt service routine 649IST interrupt stack table 650ISV independent software vendor 651IT information technology 652ITB Intel Turbo Boost 653ITIL information technology infrastructure library 654ITSM IT service management 655IV initialization vector 656IVT interrupt vector table 657JBOD just a bunch of disks 658JFET junction [gate] field-effect transistor 659JIT just in time 660JPEG Joint Photographic Experts Group 661JRE Java Runtime Environment 662JTAG joint test action group 663KASLR kernel address space layout randomization 664KB keyboard 665KB kilobyte 666KBD keyboard 667KBD kilobaud 668KLOC thousand lines of code 669KMS kernel-mode setting 670KPI kernel programming interface 671KVA kernel virtual address 672KVM kernel virtual machine 673KVM kernel virtual memory 674KVM keyboard, video, [and] mouse 675LAMP Linux Apache MySQL {Perl,PHP,Python} 676LAN local area network 677LAPIC local advanced programmable interrupt controller 678LAR load access rights 679LBA logical block addressing 680LBS location-based service 681LCD liquid crystal display 682LCP link control protocol 683LDA local delivery agent 684LDAP Lightweight Directory Access Protocol 685LDR light-dependent resistor 686LDT local descriptor table 687LE logical extent 688LED light emitting diode 689LER label edge router 690LF line feed 691LF low frequency 692LFM lowest frequency mode 693LFN long file names 694LFO low-frequency oscillation 695LFS log-structured file system 696LFU least frequently used 697LHP loop heat pipe 698LIFO last in, first out 699LILO LInux LOader 700LILO last in, last out 701LINT local interrupt 702LIR local Internet registry 703LKM {Linux,loadable} kernel module 704LKML Linux kernel mailing list 705LL load linked 706LL/SC load linked/store conditional 707LLC logical link control 708LLDP link layer discovery protocol 709LLF low level format 710LLMNR link-local multicast name resolution 711LLVM Low Level Virtual Machine 712LM long mode 713LMM link management mode 714LNO loop nest optimization 715LOC lines of code 716LOM lights-out management 717LPC low pin count 718LPS local positioning system 719LRC longitudinal redundancy check 720LRM left-to-right mark 721LRO left-to-right override 722LRU least recently used 723LSB Linux standards base 724LSB least significant {bit,byte} 725LSI large scale integration 726LSL load segment limit 727LSN Large Scale NAT 728LSN log sequence number 729LSR label switch router 730LTCC low temperature co-fired ceramic 731LTO linear tape-open 732LTO link time optimization 733LTR left to right 734LTR load task register 735LTR letter(-sized paper) 736LTS long term support 737LUA Lua Uppercase Accident 738LUN logical unit number 739LV logical volume 740LVM logical volume management 741LVT local vector table 742LWP light-weight process 743LZW Lempel Ziv Welch 744MAC mandatory access control 745MAC {media,medium} access control 746MAC message authentication {check,code} 747MADT multiple APIC descriptor table 748MB megabyte 749MBA multi-boot agent 750MBR master boot record 751MBS megabits per second 752MC memory controller 753MCA machine check architecture 754MCA MicroChannel architecture 755MCC multiversion concurrency control 756MCE machine check exception 757MCGA Multi-Color Graphics Array 758MCH memory controller hub 759MCM multi-chip module 760MCQ memory controlled queue 761MD machine-dependent 762MDA mail delivery agent 763MDA Monochrome Display Adapter 764MDRAM multibank dynamic random access memory 765MESI modified, exclusive, shared, invalid 766MFC merge from current 767MFC Microsoft Foundation Classes 768MFM modified frequency modulation 769MI machine-independent 770MIB management information base 771MIC message integrity {check,code} 772MID mobile Internet device 773MIDI musical instrument digital interface 774MIF management information format 775MII media independent interface 776MIM man in the middle 777MIMD multiple instruction, multiple data 778MIME Multipurpose Internet Mail Extensions 779MIMO multiple input multiple output 780MIPS million instructions per second 781MISD multiple instruction, single data 782MIT Massachusetts Institute of Technology 783MITM man in the middle 784ML machine language 785ML machine learning 786ML mailing list 787ML markup language 788ML maximum likelihood 789MLC multi-level cell 790MLD multicast listener discovery 791MLHP micro loop heat pipe 792MMF multi-mode fiber 793MMIC monolithic microwave integrated circuit 794MMIO memory mapped input/output 795MMORPG massive multiplayer online role playing game 796MMU memory management unit 797MMX matrix math extension 798MMX multimedia extension 799MMX multiple math extension 800MO magneto-optical 801MOESI modified, owned, exclusive, shared, invalid 802MOF maximum operating frequency 803MOSFET metal-oxide-semiconductor field-effect transistor 804MOSI modified, owned, shared, invalid 805MP multi-platform 806MP multiplayer 807MP {multiprocessing,multiprocessor} 808MPEG moving picture experts group 809MPI message passing interface 810MPLS Multiprotocol Label Switching 811MPP massively parallel processor 812MPS memory pool system 813MPS multiprocessor specification 814MR modem ready 815MRU most recently used 816MS Microsoft 817MSB most significant {bit,byte} 818MSE mean square error 819MSF minutes seconds frames 820MSI message signaled interrupt 821MSI modified, shared, invalid 822MSR machine state register 823MSS maximum segment size 824MSTP Multiple Spanning Tree Protocol 825MT machine translation 826MTA mail transfer agent 827MTBF mean time between failures 828MTP media transfer protocol 829MTRR memory type range register 830MTTF mean time to failure 831MTU maximum transmission unit 832MUA mail user agent 833MUD multi-user domain 834MVCC multiversion concurrency control 835MWE module width encoding 836MX mail exchange 837NACK negative acknowledgement 838NAN not a number 839NAPT Network Address Port Translation 840NAS network attached storage 841NAT network address translation 842NAV network allocation vector 843NC numerical control 844NCO numerically-controlled oscillator 845NCP Network Control Protocol 846NCQ native command queuing 847ND neighbor discovery 848NDFA nondeterministic finite automaton 849NE numeric error 850NFA nondeterministic finite automaton 851NFC near-field communication 852NFCI no functional change intended 853NFS network file system 854NFV network function virtualization 855NIA next instruction address 856NIC network information center 857NIC network interface card 858NIDS network intrusion detection system 859NIP network interface protocol 860NIPS network intrusion prevention system 861NIS network information service 862NIST National Institute of Standards and Technology 863NLS native language support 864NMI non-maskable interrupt 865NNTP Network News Transfer Protocol 866NOC network operations center 867NOP no operation 868NOS network operating system 869NP nondeterministic polynomial time 870NRZ non-return to zero 871NSA nation-state adversary 872NSA no such agency 873NSA National Security Agency 874NTM non-deterministic Turing machine 875NTP Network Time Protocol 876NUMA non-uniform memory access 877NVRAM non-volatile random access memory 878NW not write-through 879NX no execute 880OAEP optimal asymmetric encryption padding 881OBO off by one 882OBOE off by one error 883OCL object constraint language 884OCR optical character recognition 885ODCM on-demand clock modulation 886ODT on-die termination 887OEM original equipment manufacturer 888OFB output feedback 889OFDM orthogonal frequency division multiplexing 890OFET organic field-effect transistor 891OLAP online analytical processing 892OLE object linking and embedding 893OLTP online transaction processing 894ONFI open nand flash interface 895OO OpenOffice 896OO object oriented 897OOB out of band 898OOE out of order execution 899OOM out of memory 900OOO OpenOffice.org 901OOP object oriented programming 902OOPS object oriented programming systems 903OOSE object oriented software engineering 904OPM operations per minute 905OPS operations per second 906OQL Object Query Language 907ORB object request broker 908ORM object-relational mapping 909OS operating system 910OSD open source definition 911OSF open software foundation 912OSI Open Source Initiative 913OSI open systems interconnection 914OSPF open shortest path first 915OSPM OS power management 916OSS open sound system 917OSS open source software 918OSVW operating system visible workarounds 919OTP one time password 920OTP open telecom platform 921OU organizational unit 922OUI organizationally unique identifier 923OWL Web Ontology Language 924P2P PCI to PCI 925P2P peer to peer 926PA phase accumulator 927PA physical address 928PAAS platform as a service 929PAC phase-amplitude converter 930PAE physical address extension 931PAL phase alternating line 932PAL programmable array logic 933PAM pluggable authentication modules 934PAM pulse amplitude modulation 935PAP password authentication protocol 936PAT page attribute table 937PAT port address translation 938PATA parallel ATA 939PAX portable archive exchange 940PBE pending break encoding 941PBE programming by example 942PC personal computer 943PC program counter 944PCB printed circuit board 945PCB process control block 946PCC Portable C Compiler 947PCD page-level cache disable 948PCE performance-monitor counter enable 949PCI peripheral component interconnect 950PCM phase change memory 951PCM pulse code modulation 952PCMCIA Personal Computer Memory Card International Association 953PCP Port Control Protocol 954PD public domain 955PDA personal digital assistant 956PDA pushdown automaton 957PDAG propositional directed acyclic graph 958PDB power distribution board 959PDF portable document format 960PDM pulse-duration modulation 961PDN pull-down network 962PDP page {descriptor,directory} page 963PDS product data sheet 964PDU protocol data unit 965PE protection enable 966PEAP Protected EAP 967PECI platform environment control interface 968PEP protocol extension protocol 969PER packed encoding rules 970PFS perfect forward secrecy 971PGAS partitioned global address space 972PGE page global enable 973PGP Pretty Good Privacy 974PHB PCI host bridge 975PHP PHP: Hypertext Preprocessor 976PIC position independent code 977PIC programmable interrupt controller 978PICNIC problem in chair, not in computer 979PID process id 980PIE position independent executable 981PIL Priority Interrupt Level 982PIM personal information manager 983PIM platform-independent model 984PIO programmed input/output 985PIPT physically indexed, physically tagged 986PIQ prefetch input queue 987PIT programmable interrupt timer 988PIV personal identity verification 989PKCS public-key cryptography standards 990PKI public key infrastructure 991PLC programmable logic controller 992PLD programmable logic device 993PLL phase locked loop 994PLRU pseudo LRU 995PLTM package level thermal management 996PM power management 997PM {phase,pulse} modulation 998PME power management event 999PMI platform management interrupt 1000PMIO port-mapped input/output 1001PMT photo-multiplier tube 1002PMU power management unit 1003PNG portable network graphics 1004PNP plug and play 1005POE power over ethernet 1006POF probability of failure 1007POP Post Office Protocol 1008POP power on password 1009POSIX Portable Operating System Interface [for Unix] 1010POST power on self test 1011POTS plain old telephone system 1012PP pair programming 1013PPB PCI [to] PCI bridge 1014PPC PowerPC 1015PPI pixels per inch 1016PPM pages per minute 1017PPP Point-to-Point Protocol 1018PPPOA Point-to-Point Protocol over ATM 1019PPPOE Point-to-Point Protocol over Ethernet 1020PPU physics processing unit 1021PRBS pseudorandom bit sequence 1022PRG pseudorandom generator 1023PRF pseudorandom function [family] 1024PRML partial response, maximum likelihood 1025PRN pseudorandom {noise,number} 1026PRNG pseudorandom number generator 1027PROM programmable read only memory 1028PRP pseudorandom permutation 1029PSD power spectral density 1030PSE page size extensions 1031PSK phase shift keying 1032PSK pre-shared key 1033PSTN public switched telephone network 1034PSW program status word 1035PTE page table entry 1036PTLA pseudo top level aggregator 1037PTP page table page 1038PTV perceived target value 1039PU processing unit 1040PUN physical unit number 1041PV physical volume 1042PVG physical volume group 1043PVI protected-mode virtual interrupt 1044PVST Per-VLAN Spanning Tree 1045PWM pulse width modulation 1046PXE preboot execution environment 1047QA quality assurance 1048QAM quadrature amplitude modulation 1049QAM quality assurance management 1050QBE query by example 1051QC quality control 1052QDI quasi delay insensitive 1053QOS quality of service 1054QVL qualified vendor list 1055R/O read only 1056R/W read/write 1057RA receiver address 1058RA remote assistance 1059RA resource affinity 1060RA router advertisement 1061RAD rapid application development 1062RAID redundant array of {independent,inexpensive} disks 1063RAM random access memory 1064RAS reliability, availability and serviceability 1065RAS remote access service 1066RAS restartable atomic sequence 1067RAS row address strobe 1068RBF radial basis function 1069RBT red-black tree 1070RC release candidate 1071RC remote control 1072RCS Revision Control System 1073RCS revision control system 1074RCU read, copy, update 1075RDB Rigid Disk Block 1076RDBMS relational database management system 1077RDF Resource Description Framework 1078RDM relational data model 1079RDMA remote direct memory access 1080RE regular expression 1081REST representational state transfer 1082RF radio frequency 1083RFI radio frequency interference 1084RFO request for ownership 1085RGB red green blue 1086RGBA red green blue alpha 1087RGMII reduced gigabit media independent interface 1088RH read hit 1089RHEL Red Hat Enterprise Linux 1090RHL Red Hat Linux 1091RIB routing information base 1092RIFF Resource Interchange File Format 1093RIP Routing Information Protocol 1094RIR regional Internet registry 1095RISC reduced instruction set {computer,computing} 1096RKM ROM Kernel Manual 1097RLE run length encoding 1098RLL run length limited 1099RLO right-to-left override 1100RM read miss 1101RMI remote method invocation 1102RMO Relaxed Memory Ordering 1103RMPM rapid memory power management 1104RMS root mean square 1105RMW read, modify, write 1106RNG random number generator 1107ROM read only memory 1108RPC remote procedure call 1109RPKI resource PKI 1110RPL requested privilege level 1111RPM revolutions per minute 1112RPN reverse Polish notation 1113RPVST Rapid Per-VLAN Spanning Tree 1114RR random replacement 1115RR round robin 1116RS relay station 1117RSA Rivest, Shamir, [and] Adleman 1118RSIP Realm Specific IP 1119RSN Robust Secure Network 1120RSS really simple syndication 1121RSS residual sum of squares 1122RSTP Rapid Spanning Tree Protocol 1123RT real time 1124RTC real time clock 1125RTC real time computing 1126RTF rich text format 1127RTL register transfer language 1128RTL resistor-transistor logic 1129RTL right to left 1130RTOS real time operating system 1131RTS request to send 1132RTT round trip time 1133RUP rational unified process 1134RW Rabin-Williams 1135RWM read-write memory 1136RX {receive,receiver} 1137S/PDIF Sony/Philips Digital Interface Format 1138SA security advisory 1139SA security association 1140SA source address 1141SA structured analysis 1142SAAS software as a service 1143SACD super audio compact disc 1144SAD security association database 1145SAL system abstraction layer 1146SAM serial access memory 1147SAM sum addressed memory 1148SAN storage area network 1149SAP service access point 1150SAPIC streamlined advanced programmable interrupt controller 1151SASD structured analysis, structured design 1152SASI Shugart Associates System Interface 1153SASL simple authentication [and] security layer 1154SATA serial advanced technology attachment 1155SB sound blaster 1156SBU standard build unit 1157SC store conditional 1158SCA source code analyzer 1159SCADA supervisory control and data acquisition 1160SCC single chip cloud 1161SCC source code control 1162SCCS Source Code Control System 1163SCI scalable coherent interface 1164SCI system control interrupt 1165SCM software configuration management 1166SCM source code management 1167SCM storage-class memory 1168SCP secure copy 1169SCSI Small Computer System Interface 1170SCTP Stream Control Transmission Protocol 1171SDI symbol deinterleave 1172SDK software development kit 1173SDL Simple Declarative Language 1174SDL Simple Direct-media Layer 1175SDLC {software,system,systems} development life cycle 1176SDN software defined networking 1177SDRAM synchronous dynamic random access memory 1178SDS software defined storage 1179SDT syntax-directed translation 1180SEGV segmentation violation 1181SEO search engine optimization 1182SFC sequential function chart 1183SFI simple firmware interface 1184SFI software fault isolation 1185SFTP SSH File Transfer Protocol 1186SFTP Serial File Transfer Protocol 1187SFTP Simple File Transfer Protocol 1188SGMII serial gigabit media independent interface 1189SGRAM synchronous graphics random access memory 1190SHA secure hash algorithm 1191SIDH supersingular isogeny Diffie-Hellman 1192SIEM security information and event management 1193SIFS short inter-frame space 1194SIMD single instruction, multiple data 1195SIMM single inline memory module 1196SIP Session Initiation Protocol 1197SIR signal-to-interference ratio 1198SIR slow infrared 1199SISD single instruction, single data 1200SLC single-level cell 1201SLDRAM synchronous-link dynamic random access memory 1202SLED single large expensive disk 1203SLI scalable link interface 1204SLI scan-line interleave 1205SLOC source lines of code 1206SLRU segmented LRU 1207SMA smart memory access 1208SMAF system management action field 1209SMAP Simple Mail Access Protocol 1210SMAP supervisor mode access prevention 1211SMART self-monitoring analysis and reporting technology 1212SMBIOS System Management BIOS 1213SMC system management controller 1214SMEP supervisor mode execution protection 1215SMF single mode fiber 1216SMI structure of management information 1217SMI system management interrupt 1218SMM system management mode 1219SMP symmetric multiprocessing 1220SMT simultaneous multithreading 1221SMTP Simple Mail Transfer Protocol 1222SMU system management unit 1223SNAP Sub-Network Access Protocol 1224SNMP Simple Network Management Protocol 1225SNR signal-to-noise ratio 1226SOA service oriented architecture 1227SOAP Simple Object Access Protocol 1228SOC system on chip 1229SOF start of frame 1230SOH start of header 1231SOHO small office/home office 1232SOL serial over LAN 1233SP service pack 1234SP stack pointer 1235SPARC scalable processor architecture 1236SPARQL SPARQL Protocol and RDF Query Language 1237SPD security policy database 1238SPD serial presence detect 1239SPDIF Sony/Philips digital interface format 1240SPI serial peripheral interface 1241SPI stateful packet inspection 1242SPL system interrupt priority level 1243SPL spinlock 1244SPMD single process, multiple data 1245SPR special purpose register 1246SPT sectors per track 1247SQA software quality assurance 1248SQL Structured Query Language 1249SRAM static random access memory 1250SRC sample rate conversion 1251SS self-snoop 1252SS stack segment 1253SSA static single assignment 1254SSAP source service access point 1255SSB single-sideband modulation 1256SSD solid state drive 1257SSE streaming SIMD extensions 1258SSFDC solid state floppy disc card 1259SSH secure shell 1260SSI server side includes 1261SSID service set identifier 1262SSL secure sockets layer 1263SSP stack smashing protection 1264STC software thermal control 1265STD state transition diagram 1266STP Spanning Tree Protocol 1267STP shielded twisted pair 1268SUS Single Unix Specification 1269SUT system under test 1270SVG scalable vector graphics 1271SVGA Super Video Graphics Array 1272SVM secure virtual machine 1273SVM support vector machine 1274SVR System V Release 1275SVS Separate Virtual Space 1276SWF Shockwave Flash 1277SWIG simplified wrapper [and] interface generator 1278SYR symbol timing recovery 1279TA test assertion 1280TA transmitter address 1281TAI international atomic time 1282TAO track at once 1283TAOCP The Art of Computer Programming 1284TAP Test Anything Protocol 1285TAS test and set 1286TB terabyte 1287TCB trace capture buffer 1288TCB trusted computing base 1289TCC thermal control circuit 1290TCL tool command language 1291TCP Transmission Control Protocol 1292TCQ tagged command queueing 1293TDC time [to] digital converter 1294TDD test driven development 1295TDD time division duplex 1296TDM time division multiplexing 1297TDMA time division multiple access 1298TDOA time difference of arrival 1299TDP thermal design {point,power} 1300TECO Text Editor and Corrector 1301TFT thin film transistor 1302TFTP Trivial File Transfer Protocol 1303TIAS try it and see 1304TIFF tagged image file format 1305TITS try it to see 1306TK temporal key 1307TKIP Temporal Key Integrity Protocol 1308TLA top level aggregator 1309TLB translation lookaside buffer 1310TLD top level domain 1311TLS thread local storage 1312TLS transport layer security 1313TM Turing machine 1314TM thermal monitor 1315TMDS transition minimized differential signaling 1316TMO timeout 1317TOD time of day 1318TOS terms of service 1319TOS trusted operating system 1320TOS type of service 1321TP transaction processing 1322TPI tracks per inch 1323TPM transactions per minute 1324TPM trusted platform module 1325TPR task priority register 1326TPS transactions per second 1327TPS transmission parameters signaling 1328TR task register 1329TR token ring 1330TRL timing recovery loop 1331TRNG true random number generator 1332TS terminal services 1333TS time series 1334TS time stamp 1335TS transport stream 1336TSC time stamp counter 1337TSD time stamp disable 1338TSL test, set, lock 1339TSO time sharing option 1340TSO Total Store Ordering 1341TSP Time-Stamp Protocol 1342TSP Tunnel Setup Protocol 1343TSP time synchronization protocol 1344TSP traveling salesman problem 1345TSS task state segment 1346TTL time to live 1347TTL transistor-transistor logic 1348TTM translation table maps 1349TTY teletype 1350TUI {terminal,text-based,textual} user interface 1351TX {transmit out,transmitter} 1352TZ time zone 1353UAC user {access,account} control 1354UAF use-after-free 1355UART universal asynchronous receiver/transmitter 1356UAT user acceptance testing 1357UB undefined behavior 1358UC uncacheable 1359UCS uniform-cost search 1360UDMA ultra DMA 1361UDO ultra density optical 1362UDP User Datagram Protocol 1363UEFI unified extensible firmware interface 1364UFS Unix File System 1365UGA universal graphics adapter 1366UI unit interval 1367UI user interface 1368UID unique identifier 1369UID user identifier 1370UL upload 1371UMA uniform memory access 1372UMA upper memory area 1373UMB upper memory block 1374UML unified modeling language 1375UMPC ultra-mobile PC 1376UPNP universal plug and play 1377UPS uninterruptible power supply 1378URI uniform resource identifier 1379URL uniform resource locator 1380URN uniform resource name 1381USART universal synchronous/asynchronous receiver/transmitter 1382USB universal serial bus 1383USWC uncacheable speculative write combining 1384UT unit test 1385UTC coordinated universal time 1386UTP unshielded twisted pair 1387UUCP Unix-to-Unix Copy Protocol 1388UUID universally unique identifier 1389UUOC useless use of cat 1390UUT unit under test 1391UX user experience 1392VA vertical alignment 1393VA virtual address 1394VA volt-ampere 1395VAX virtual address extension 1396VB Visual Basic 1397VCA variable-gain amplifier 1398VCC common collector voltage 1399VCF voltage-controlled filter 1400VCM virtual channel memory 1401VCO voltage-controlled oscillator 1402VCS version control system 1403VESA Video Electronics Standards Association 1404VFO variable-frequency oscillator 1405VG volume group 1406VGA Video Graphics Array 1407VHDCI very high density cable interconnect 1408VID voltage level identifier 1409VIPT virtually indexed, physically tagged 1410VIVT virtually indexed, virtually tagged 1411VLAN virtual local area network 1412VLIW very long instruction word 1413VLSI very large scale integration 1414VLSM variable length subnet mask 1415VM virtual {machine,memory} 1416VME virtual mode extension 1417VMX vector multimedia extensions 1418VMX virtual machine extensions 1419VOD video on demand 1420VPN virtual private network 1421VR virtual reality 1422VRAM video random access memory 1423VRF virtual routing and forwarding 1424VRM voltage regulator module 1425VRRP Virtual Router Redundancy Protocol 1426VSTP VLAN Spanning Tree Protocol 1427VTP VLAN Trunking Protocol 1428W watt 1429W3C World Wide Web Consortium 1430WAN wide area network 1431WAP Wireless Application Protocol 1432WAP wireless access point 1433WDT watchdog timer 1434WEP Wired Equivalent Privacy 1435WFI wait for interrupt 1436WFQ weighted fair queuing 1437WH write hit 1438WIFI wireless fidelity 1439WLAN wireless local area network 1440WM write miss 1441WMI Windows Management Instrumentation 1442WOL Wake-on-LAN 1443WOM Wake-on-Modem 1444WOR Wake-on-Ring 1445WORM write once read many 1446WP WordPerfect 1447WP word processor 1448WP write protect 1449WPA Wi-Fi Protected Access 1450WPA2 Wi-Fi Protected Access II 1451WPS Wi-Fi Protected Setup 1452WRAM window random access memory 1453WS web services 1454WTC write through caching 1455WWAN wireless wide area network 1456WWW world wide web 1457WYSIWYG what you see is what you get 1458XBAR crossbar 1459XDMCP X Display Manager control protocol 1460XER XML encoding rules 1461XGA Extended Graphics Array 1462XIP execute in place 1463XML Extensible Markup Language 1464XOR exclusive or 1465XP extreme programming 1466XSI X/Open System Interface 1467XSL extensible stylesheet language 1468XSS cross site scripting 1469XT extended technology 1470XUL XML user interface language 1471YACC yet another compiler compiler 1472YAWPFAPR you are welcome; please file a problem report 1473YP Yellow Pages 1474YTD year to date 1475ZBR zone bit recording 1476ZFOD zero-filled on demand 1477ZFS zettabyte file system 1478ZIF zero insertion force 1479ZIFS zero insertion force socket 1480ZMA zone multicast address 1481