1$NetBSD: acronyms.comp,v 1.212 2018/07/04 15:38:46 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 9ABRT automatic bug reporting tool 10AC alternating current 11ACI adjacent channel interferer 12ACID atomicity, consistency, isolation, durability 13ACK Amsterdam compiler kit 14ACK acknowledgement 15ACL access control list 16ACL active current loop 17ACP auxiliary control {process,program} 18ACPI advanced configuration and power interface 19ACS access control set 20ACU automatic calling unit 21ADB Apple desktop bus 22ADC analog [to] digital converter 23ADD acronym driven development 24ADO active data objects 25ADP automatic data processing 26ADPCM adaptive differential pulse code modulation 27ADS alternate data stream 28ADSL asymmetric digital subscriber line 29ADT abstract data type 30AER advanced error reporting 31AES Advanced Encryption Standard 32AFP Apple Filing Protocol 33AFS Andrew File System 34AGC automatic gain control 35AGP accelerated graphics port 36AI analog input 37AI artificial intelligence 38AL access list 39AL active link 40ALE address latch enable 41ALS ambient light sensor 42ALU arithmetic and logical unit 43ALUA asymmetric logical unit access 44AM access method 45AM alignment mask 46AM amplitude modulation 47AMD Advanced Micro Devices Inc 48AMI alternate mark inversion 49AMP asymmetric multiprocessing 50AMQP advanced message queuing protocol 51AMT active management technology 52AN Arabic number 53ANR application not responding 54ANSI American National Standards Institute 55AO analog output 56AOL Alert-on-LAN 57AOS add or subtract 58AP access point 59AP application processor 60API application programming interface 61APEI ACPI platform error interface 62APIC advanced programmable interrupt controller 63APIPA automatic private IP addressing 64APM advanced power management 65APM application performance management 66APU accelerated processing unit 67APT advanced persistent threat 68AQM active queue management 69ARAT always running APIC timer 70ARC adaptive replacement cache 71ARC Advanced RISC Computing 72ARC automatic reference counting 73ARM Advanced RISC Machines 74ARP Address Resolution Protocol 75ARPA Advanced Research Projects Agency 76ARQ automatic repeat request 77ARR address range register 78ARU audio response unit 79AS autonomous system 80ASA Adaptive Security Appliance 81ASAN Address Sanitizer 82ASC advanced smart cache 83ASCII American Standard Code for Information Interchange 84ASD agile software development 85ASE advanced software environment 86ASIC application-specific integrated circuit 87ASK amplitude shift keying 88ASLR address space layout randomization 89ASN autonomous system number 90ASPM active state power management 91ASQ automated software quality 92ASR address space register 93AST abstract syntax tree 94AST asynchronous system trap 95AT access time 96AT advanced technology 97ATA advanced technology attachment 98ATAPI advanced technology attachment packet interface 99ATC address translation cache 100ATM asynchronous transfer mode 101ATX advanced technology extended 102AV anti virus 103AVL Adelson-Velsky-Landis 104AVX advanced vector extensions 105BA byte align 106BAL basic assembly language 107BAR base address register 108BBS bulletin board system 109BCC blind carbon copy 110BCD binary coded decimal 111BCR byte count register 112BCS base configuration space 113BD baud 114BDD binary decision diagram 115BDI bit deinterleave 116BDUF big design up front 117BEDO burst extended data output 118BER basic encoding rules 119BER bit error {rate,ratio} 120BERT boot error record table 121BFD binary {file,format} descriptor 122BFKL big fscking kernel lock 123BFS breadth-first search 124BFT binary file transfer 125BGA ball grid array 126BGP Border Gateway Protocol 127BGPSEC BGP Security 128BIND Berkeley Internet Name Daemon 129BIOS Basic Input/Output System 130BIOS built-in operating system 131BIST built-in self-test 132BIU bus interface unit 133BKDG BIOS and kernel developer's guide 134BLAS basic linear algebra subprograms 135BLC back light control 136BLOB binary large object 137BM bus master 138BMC baseboard management controller 139BMIC bus master interface controller 140BN boundary neutral 141BNF Backus-Naur form 142BO binary output 143BOF beginning of file 144BOM beginning of message 145BOM byte order mark 146BP base pointer 147BP boot processor 148BPB BIOS parameter block 149BPDU bridge protocol data unit 150BPF Berkeley Packet Filter 151BPI bits per inch 152BPM business process modelling 153BPS bits per second 154BPSK binary phase shift keying 155BQS Berkeley quality software 156BRE basic regular expression 157BS backspace 158BS binary sequence 159BSA basic service area 160BSD Berkeley Software Distribution 161BSDP Boot Service Discovery Protocol 162BSF bit scan forward 163BSOD blue screen of death 164BSP binary space partition 165BSP board support package 166BSP bootstrap processor 167BSR bit scan reverse 168BSS basic service set 169BSS block started by symbol 170BSSID basic service set identifier 171BT BitTorrent 172BT Bluetooth 173BT bit test 174BTC bit test [and] complement 175BTR bit test [and] reset 176BTS bit test [and] set 177BTS bug tracking system 178BW bandwidth 179BWM block-write mode 180CA certificate authority 181CAD computer-aided design 182CAM computer assisted manufacturing 183CAM conditional access module 184CAM content addressable memory 185CARP Common Address Redundancy Protocol 186CAS column address strobe 187CAS compare and swap 188CAS computer algebra system 189CASE computer aided software engineering 190CAU control access unit 191CAV constant angular velocity 192CBC cipher block chaining 193CBR constant bit rate 194CC carbon copy 195CCD charge coupled device 196CCI co-channel interferer 197CCNUMA cache-coherent non-uniform memory access 198CD cache disable 199CD compact disc 200CDDA compact disc digital audio 201CDMA code division multiple access 202CDP Cisco Discovery Protocol 203CDRAM cache dynamic random access memory 204CER canonical encoding rules 205CF compact flash 206CFB cipher feedback 207CFG context-free grammar 208CFG control-flow graph 209CFI control-flow integrity sanitizer 210CG control gate 211CGA Color Graphics Adapter 212CGI common gateway interface 213CGN Carrier-Grade NAT 214CHAP Challenge-Handshake Authentication Protocol 215CHS cylinder/head/sector 216CI continuous integration 217CI {common,component} interface 218CIDR Classless Inter-Domain Routing 219CIFS Common Internet File System 220CIL common intermediate language 221CIR carrier-to-interference ratio 222CIS contact image sensor 223CISC complex instruction set {computer,computing} 224CJK Chinese, Japanese, [and] Korean 225CLF common log format 226CLI command line interface 227CLR common language runtime 228CLTT closed loop thermal throttling 229CLUT color look-up table 230CLV constant linear velocity 231CM configuration management 232CMA concert multithread architecture 233CMC chassis management controller 234CMC corrected machine check 235CMS {configuration,content,course} management system 236CMI control {management,method} interface 237CMOS complementary metal-oxide-semiconductor 238CMP chip multi-processing 239CMS content management system 240CMYK cyan magenta yellow black 241CN {common,canonical} name 242CNC computer numerical control 243CNR carrier-to-noise ratio 244COF current operating frequency 245COFDM coded orthogonal frequency division multiplexing 246COFF common object file format 247COM component object model 248COMA cache-only memory architecture 249CORBA common object request broker architecture 250COS class of service 251COW copy-on-write 252CP continuous pilot 253CPB core performance boost 254CPE common phase error 255CPE common platform enumeration 256CPER common platform error record 257CPG clock pulse generator 258CPL current privilege level 259CPLD complex programmable logic device 260CPP C preprocessor 261CPS characters per second 262CPT command pass through 263CPU central processing unit 264CR carriage return 265CRC cyclic redundancy check 266CRL carrier recovery loop 267CRLF carriage return line feed 268CRT cathode ray tube 269CRUD create, read, update, and delete 270CS cable select 271CS chip select 272CS code segment 273CS computer science 274CSDL {common,conceptual} schema definition language 275CSI channel state information 276CSI common system interface 277CSMA carrier sense multiple access 278CSMA/CA carrier sense multiple access with collision avoidance 279CSMA/CD carrier sense multiple access with collision detection 280CSR control [and] status registers 281CSRG Computer Systems Research Group 282CSS cascading style sheets 283CSV comma-separated values 284CTM close to metal 285CTR counter [mode] 286CTS clear to send 287CUA common user access 288CUT coordinated universal time 289CV control voltage 290CVE common vulnerabilities and exposures 291CVS Concurrent Versions System 292DA destination address 293DAA distributed application architecture 294DAB digital audio broadcasting 295DAC digital [to] analog converter 296DAC discretionary access control 297DAD duplicate address detection 298DANE DNS-based Authentication of Named Entities 299DAO disk at once 300DAP Directory Access Protocol 301DAT digital audio tape 302DAT dynamic acceleration technology 303DB database 304DBA database administrator 305DBA dynamic bandwidth allocation 306DBB data bus buffer 307DBC design by contract 308DBL dynamic buffer limiting 309DBMS database management system 310DBS database server 311DC direct current 312DCC Direct Client-to-Client 313DCC direct cable connect 314DCD data carrier detect 315DCE data control equipment 316DCE distributed computing environment 317DCL Digital Command Language 318DCOM distributed component object model 319DCOP Desktop COmmunication Protocol 320DCS data collection systems 321DCT discrete cosine transform 322DCU data cache unit 323DDC display data channel 324DDE dynamic data exchange 325DDK device driver kit 326DDL data description language 327DDR double data rate 328DDS direct digital sound 329DDWG Digital Display Working Group 330DE debugging extensions 331DE desktop environment 332DEA data encryption algorithm 333DEC Digital Equipment Corporation 334DEK data encryption key 335DEP data execution prevention 336DER distinguished encoding rules 337DES Data Encryption Standard 338DF don't fragment 339DFA deterministic finite automaton 340DFC data flow control 341DFS depth first search 342DFS distributed file system 343DFSAN Data Flow Sanitizer 344DFT diagnostic function test 345DFT discrete Fourier transform 346DGL data generation language 347DH Diffie-Hellman 348DHCP Dynamic Host Configuration Protocol 349DIFS distributed inter-frame space 350DIMM dual inline memory module 351DIRT design in real time 352DL diode logic 353DL discrete logarithm 354DL download 355DLE data link escape 356DLL dynamic link library 357DLP discrete logarithm problem 358DMA direct memory access 359DMI desktop management interface 360DMS document management system 361DMT discrete multitone modulation 362DNARD Digital network appliance reference design 363DND drag and drop 364DNS Domain Name System 365DNSSEC DNS Security Extensions 366DOE distributed object environment 367DOF data over fibre 368DOM document object model 369DOS denial of service 370DOS disk operating system 371DP DisplayPort 372DPC deferred procedure call 373DPCM differential pulse code modulation 374DPD dead peer detection 375DPI deep packet inspection 376DPI dots per inch 377DPL descriptor privilege level 378DPS Display PostScript 379DPST display power savings technology 380DRAAS disaster recovery as a service 381DRAM dynamic random access memory 382DRBG deterministic random bit generator 383DRI direct rendering infrastructure 384DRM digital rights management 385DRRS display refresh rate switching 386DS debug store 387DSA digital signature algorithm 388DSAP destination service access point 389DSB double-sideband modulation 390DSDT differentiated system descriptor table 391DSL digital subscriber line 392DSL domain specific language 393DSLAM digital subscriber line access multiplexer 394DSN delivery status notification 395DSO dynamic shared object 396DSP digital signal processor 397DSSS direct sequence spread spectrum 398DTD document type definition 399DTE data terminal equipment 400DTE dumb terminal emulator 401DTL diode-transistor logic 402DTLS datagram transport layer security 403DTS digital thermal sensor 404DUT device under test 405DVB digital video broadcasting 406DVCS distributed version control system 407DVD digital versatile disc 408DVFS dynamic voltage and frequency scaling 409DVI device independent 410DVI Digital Visual Interface 411DVR digital video recorder 412E-XER extended XML encoding rules 413EABI embedded-application binary interface 414EAI Email Address Internationalization 415EAI Enterprise Application Integration 416EAP Extensible Authentication Protocol 417EAPOL EAP over Lan 418EBCDIC Extended Binary Coded Decimal Interchange Code 419EBDA Extended BIOS Data Area 420EBR extended boot record 421EC elliptic curve 422ECC elliptic curve cryptography 423ECC error correction code 424ECDH elliptic curve Diffie-Hellman 425ECDL elliptic curve discrete logarithm 426ECDLP elliptic curve discrete logarithm problem 427ECDSA elliptic curve digital signature algorithm 428ECL emitter-coupled logic 429ECN explicit congestion notification 430ECP enhanced capability port 431ECS enhanced chip set 432ECS extended configuration space 433EDAC error detection and correction 434EDAT enhanced dynamic acceleration technology 435EdDSA Edwards curve digital signature algorithm 436EDGE explicit data graph execution 437EDID extended display identification data 438EDO extended data out 439EDS electronical data sheet 440EEE energy efficient ethernet 441EEPROM electrically erasable programmable read only memory 442EFI extensible firmware interface 443EFL emitter follower logic 444EFM eight to fourteen modulation 445EGA Enhanced Graphics Adapter 446EGP exterior gateway protocol 447EH extension header 448EIDE enhanced IDE 449EISA extended industry standard architecture 450EINJ error injection table 451ELF executable and linking format 452ELS entry level system 453EMI electro-magnetic interference 454EMP electro-magnetic pulse 455EMR electro-magnetic radiation 456EMACS Editor MACroS 457EOF end of file 458EOI end of interrupt 459EOL end of line 460EOT end of transmission 461EPIC explicitly parallel instruction computing 462EPP enhanced parallel port 463EPRML extended partial response, maximum likelihood 464EPROM erasable programmable read only memory 465ERD emergency recovery disk 466ERD entity relationship diagram 467ERE extended regular expression 468ERST error record serialization table 469ESAN Efficiency Sanitizer 470ESB enterprise service bus 471ESDRAM enhanced synchronous dynamic random access memory 472ESS electronic switching system 473ESS extended service set 474ESSID extended service set identifier 475EST enhanced speedstep 476ETL extract, transform, load 477EU execution unit 478EULA end user license agreement 479FAT file allocation table 480FBRAM frame buffer random access memory 481FCL fiber channel loop 482FCS frame check sequence 483FDC floppy disk controller 484FDD floppy disk drive 485FDDI fiber distributed data interface 486FDE full disk encryption 487FEA finite element analysis 488FEC forward error correction 489FET field-effect transistor 490FF finite field 491FF form feed 492FFDH finite-field Diffie-Hellman 493FFH functional fixed hardware 494FFI foreign function interface 495FFM focus follows mouse 496FFS Fast File System 497FFS find first set 498FFT fast Fourier transform 499FG floating gate 500FHSS frequency hop spread spectrum 501FID frequency identifier 502FIFO first in, first out 503FILO first in, last out 504FIPS Federal Information Processing Standards 505FIR fast infrared 506FLOPS floating [point] operations per second 507FLOSS free/libre/open source software 508FM frequency modulation 509FMR false match rate 510FOSS free/open source software 511FPGA field programmable gate array 512FPM fast page mode 513FPR floating point register 514FPU floating point unit 515FQDN fully qualified domain name 516FRR false rejection rate 517FRU field replaceable unit 518FS file system 519FSB front side bus 520FSCK file system check 521FSF Free Software Foundation 522FSK frequency shift keying 523FSM finite-state machine 524FTA fault tree analysis 525FTL flash translation layer 526FTP File Transfer Protocol 527FTPS File Transfer Protocol Secure 528FUS fast user switching 529FWH firmware hub 530FWS folding white space 531GAL generic array logic 532GAS generic address structure 533GC garbage collector 534GCM Galois counter mode 535GCR group-coded recording 536GDI Graphics Device Interface 537GDT global descriptor table 538GEM graphics environment manager 539GEM graphics execution manager 540GENA general event notification architecture 541GHC Glasgow Haskell compiler 542GHES generic hardware error source 543GIC generic interrupt controller 544GID group identifier 545GIF graphics interchange format 546GMCH graphics and memory controller hub 547GNU GNU's Not Unix 548GOP graphics output protocol 549GOT global offset table 550GPE general purpose event 551GPF general protection fault 552GPG GNU Privacy Guard 553GPL [GNU] General Public License 554GPR general purpose register 555GPS generalized processor sharing 556GPT GUID partition table 557GPU graphics processing unit 558GR golden ratio 559GRE generic routing encapsulation 560GSI global system interrupt 561GUI graphical user interface 562GUID globally unique identifier 563GVFS git virtual file system 564HA high availability 565HAL hardware abstraction layer 566HAT hashed array tree 567HATEOAS hypermedia as the engine of application state 568HBA host bus adapter 569HCF halt and catch fire 570HCI host controller interface 571HCI human-computer interaction 572HCL hardware compatibility list 573HDCP High-bandwidth Digital Content Protection 574HDD hard disk drive 575HDL hardware description language 576HDMI High-Definition Multimedia Interface 577HDTV high-definition television 578HECI host embedded controller interface 579HEST hardware error source table 580HF high frequency 581HFM highest frequency mode 582HID human interface device 583HKP HTTP Keyserver Protocol 584HLL high-level language 585HMA high memory area 586HMI human-machine interface 587HOOD hierarchical object oriented design 588HP Hewlett-Packard 589HPC high performance computing 590HPET high precision event timer 591HSM hardware security module 592HSM hierarchical storage management 593HT hyper-threading 594HTC hardware thermal control 595HTCC high temperature co-fired ceramic 596HTML HyperText Markup Language 597HTT hyper-threading technology 598HTTP Hypertext Transfer Protocol 599HTTPS Hypertext Transfer Protocol Secure 600HVM hardware virtual machine 601HVDS High-Voltage Differential Signaling 602HWASAN Hardware-assisted Address Sanitizer 603HZ Hertz 604I2O intelligent input/output 605IA information assurance 606IAAS infrastructure as a service 607IANA Internet Assigned Numbers Authority 608IBC iterated block cipher 609IBM International Business Machines 610IBS instruction based sampling 611IBSS independent basic service set 612IC integrated circuit 613ICA independent computer architecture 614ICB Internet Citizen's Band 615ICE in-circuit emulator 616ICE internal compiler error 617ICH I/O controller hub 618ICMP Internet Control Message Protocol 619ICT information and communications technology 620ICW initialization command word 621IDA Intel dynamic acceleration 622IDCMP Intuition direct communication message port 623IDE integrated development environment 624IDE integrated drive electronics 625IDPS intrusion detection [and] prevention system 626IDRP inter-domain routing protocol 627IDS intrusion detection system 628IDT interrupt descriptor table 629IE Internet Explorer 630IEC International Electrotechnical Commission 631IEEE Institute of Electrical and Electronics Engineers 632IESG Internet Engineering Steering Group 633IETF Internet Engineering Task Force 634IF intermediate frequency 635IFCM isochronous flow control mode 636IFF Interchange File Format 637IFS internal field separator 638IGD Internet gateway device 639IGMP Internet Group Management Protocol 640IGP interior gateway protocol 641IHV independent hardware vendor 642IKE Internet key exchange 643ILM internal loopback mode 644ILOM integrated lights-out management 645ILP instruction level parallelism 646IM instant messaging 647IMAP Internet Message Access Protocol 648IMC integrated memory controller 649IMCR interrupt mode configuration register 650IMR interrupt mask register 651IMS information management system 652INCITS InterNational Committee for Information Technology Standards 653IO input/output 654IOCTL input/output control 655IOMMU input/output memory management unit 656IOT Internet of Things 657IP Internet Protocol 658IP intellectual property 659IPC interprocess communication 660IPE integrated programming environment 661IPI interprocessor interrupt 662IPL Initial Program Load 663IPL Interrupt Priority Level 664IPMB Intelligent Platform Management Bus 665IPMI Intelligent Platform Management Interface 666IPNG Internet Protocol, Next Generation 667IPS in-plane switching 668IPS intrusion prevention system 669IPSEC Internet Protocol Security 670IRC Internet Relay Chat 671IRDA infrared data association 672IRQ interrupt request 673IRQL interrupt request level 674IRR interrupt request register 675IRTF Internet Research Task Force 676IS information system 677ISA industry standard architecture 678ISA instruction set architecture 679ISDN integrated services digital network 680ISI inter-symbol interference 681ISM industrial, scientific, [and] medical 682ISN initial serial number 683ISO International Standards Organization 684ISOC Internet Society 685ISP Internet service provider 686ISR in-service register 687ISR interrupt service routine 688IST interrupt stack table 689ISV independent software vendor 690IT information technology 691ITB Intel Turbo Boost 692ITIL information technology infrastructure library 693ITP in-target probe 694ITSM IT service management 695IV initialization vector 696IVT interrupt vector table 697JBOD just a bunch of disks 698JFET junction [gate] field-effect transistor 699JIT just in time 700JPEG Joint Photographic Experts Group 701JRE Java Runtime Environment 702JSON JavaScript Object Notation 703JTAG joint test action group 704KASLR kernel address space layout randomization 705KB keyboard 706KB kilobyte 707KBD keyboard 708KBD kilobaud 709KCS keyboard controller style 710KLOC thousand lines of code 711KMS kernel-mode setting 712KPI kernel programming interface 713KVA kernel virtual address 714KVM kernel virtual machine 715KVM kernel virtual memory 716KVM keyboard, video, [and] mouse 717LAMP Linux Apache MySQL {Perl,PHP,Python} 718LAN local area network 719LAPIC local advanced programmable interrupt controller 720LAR load access rights 721LBA logical block addressing 722LBS location-based service 723LCD liquid crystal display 724LCP link control protocol 725LDA local delivery agent 726LDAP Lightweight Directory Access Protocol 727LDR light-dependent resistor 728LDT local descriptor table 729LE logical extent 730LED light emitting diode 731LER label edge router 732LF line feed 733LF low frequency 734LFM lowest frequency mode 735LFN long file names 736LFO low-frequency oscillation 737LFS log-structured file system 738LFU least frequently used 739LHP loop heat pipe 740LIFO last in, first out 741LILO LInux LOader 742LILO last in, last out 743LINT local interrupt 744LIR local Internet registry 745LISP LISt Processor 746LISP Locator/ID Separation Protocol 747LKM {Linux,loadable} kernel module 748LKML Linux kernel mailing list 749LL load linked 750LL/SC load linked/store conditional 751LLC logical link control 752LLDP link layer discovery protocol 753LLF low level format 754LLMNR link-local multicast name resolution 755LLVM Low Level Virtual Machine 756LM long mode 757LMM link management mode 758LNO loop nest optimization 759LOC lines of code 760LOM lights-out management 761LPC low pin count 762LPS local positioning system 763LRC longitudinal redundancy check 764LRM left-to-right mark 765LRO left-to-right override 766LRU least recently used 767LSAN Leak Sanitizer 768LSB Linux standards base 769LSB least significant {bit,byte} 770LSI large scale integration 771LSL load segment limit 772LSN Large Scale NAT 773LSN log sequence number 774LSR label switch router 775LTCC low temperature co-fired ceramic 776LTO linear tape-open 777LTO link time optimization 778LTR left to right 779LTR load task register 780LTR letter(-sized paper) 781LTS long term support 782LUA Lua Uppercase Accident 783LUN logical unit number 784LV logical volume 785LVM logical volume management 786LVT local vector table 787LVDS Low-Voltage Differential Signaling 788LWP light-weight process 789LZW Lempel Ziv Welch 790MAC mandatory access control 791MAC {media,medium} access control 792MAC message authentication {check,code} 793MADT multiple APIC descriptor table 794MB megabyte 795MBA multi-boot agent 796MBR master boot record 797MBS megabits per second 798MC memory controller 799MCA machine check architecture 800MCA MicroChannel architecture 801MCC multiversion concurrency control 802MCE machine check exception 803MCGA Multi-Color Graphics Array 804MCH memory controller hub 805MCM multi-chip module 806MCQ memory controlled queue 807MD machine-dependent 808MD-SAL model-driven service abstraction layer 809MDA mail delivery agent 810MDA Monochrome Display Adapter 811MDC Management Data Clock 812MDI Medium Dependent Interface 813MDI-X Medium Dependent Interface Crossover 814MDIO Management Data Input/Output 815MDMX MIPS Digital Media eXtension 816MDRAM multibank dynamic random access memory 817MESI modified, exclusive, shared, invalid 818MFC merge from current 819MFC Microsoft Foundation Classes 820MFM modified frequency modulation 821MI machine-independent 822MIB management information base 823MIC message integrity {check,code} 824MID mobile Internet device 825MIDI musical instrument digital interface 826MIF management information format 827MII media independent interface 828MIM man in the middle 829MIMD multiple instruction, multiple data 830MIME Multipurpose Internet Mail Extensions 831MIMO multiple input multiple output 832MIPS million instructions per second 833MIPS Microprocessor without Interlocked Pipeline Stages 834MISD multiple instruction, single data 835MIT Massachusetts Institute of Technology 836MITM man in the middle 837ML machine language 838ML machine learning 839ML mailing list 840ML markup language 841ML maximum likelihood 842MLC multi-level cell 843MLD multicast listener discovery 844MLHP micro loop heat pipe 845MMF multi-mode fiber 846MMIC monolithic microwave integrated circuit 847MMIO memory mapped input/output 848MMORPG massive multiplayer online role playing game 849MMU memory management unit 850MMX matrix math extension 851MMX multimedia extension 852MMX multiple math extension 853MO magneto-optical 854MOESI modified, owned, exclusive, shared, invalid 855MOF maximum operating frequency 856MOSFET metal-oxide-semiconductor field-effect transistor 857MOSI modified, owned, shared, invalid 858MP multi-platform 859MP multiplayer 860MP {multiprocessing,multiprocessor} 861MPEG moving picture experts group 862MPI message passing interface 863MPLS Multiprotocol Label Switching 864MPP massively parallel processor 865MPS memory pool system 866MPS multiprocessor specification 867MQTT Message Queuing Telemetry Transport 868MR modem ready 869MRU most recently used 870MS Microsoft 871MSAN Memory Sanitizer 872MSB most significant {bit,byte} 873MSE mean square error 874MSF minutes seconds frames 875MSI message signaled interrupt 876MSI modified, shared, invalid 877MSR {machine state,model-specific} register 878MSS maximum segment size 879MSTP Multiple Spanning Tree Protocol 880MT machine translation 881MTA mail transfer agent 882MTBF mean time between failures 883MTP media transfer protocol 884MTRR memory type range register 885MTTF mean time to failure 886MTU maximum transmission unit 887MUA mail user agent 888MUD multi-user domain 889MVCC multiversion concurrency control 890MWE module width encoding 891MX mail exchange 892NACK negative acknowledgement 893NAN not a number 894NAPT Network Address Port Translation 895NAS network attached storage 896NAT network address translation 897NAV network allocation vector 898NC numerical control 899NCO numerically-controlled oscillator 900NCP Network Control Protocol 901NCQ native command queuing 902ND neighbor discovery 903NDFA nondeterministic finite automaton 904NE numeric error 905NEWS Network extensible Window System 906NFA nondeterministic finite automaton 907NFC near-field communication 908NFCI no functional change intended 909NFS network file system 910NFV network function virtualization 911NIA next instruction address 912NIC network information center 913NIC network interface card 914NIDS network intrusion detection system 915NIP network interface protocol 916NIPS network intrusion prevention system 917NIS network information service 918NIST National Institute of Standards and Technology 919NLS native language support 920NMI non-maskable interrupt 921NNTP Network News Transfer Protocol 922NOC network operations center 923NOP no operation 924NOS network operating system 925NP nondeterministic polynomial time 926NRZ non-return to zero 927NSA nation-state adversary 928NSA no such agency 929NSA National Security Agency 930NTM non-deterministic Turing machine 931NTP Network Time Protocol 932NUMA non-uniform memory access 933NVRAM non-volatile random access memory 934NW not write-through 935NX no execute 936OAEP optimal asymmetric encryption padding 937OAM operations, administration, and {management,maintenance} 938OBO off by one 939OBOE off by one error 940OCL object constraint language 941OCR optical character recognition 942ODCM on-demand clock modulation 943ODT on-die termination 944OEM original equipment manufacturer 945OFB output feedback 946OFDM orthogonal frequency division multiplexing 947OFET organic field-effect transistor 948OLAP online analytical processing 949OLE object linking and embedding 950OLTP online transaction processing 951ONFI open nand flash interface 952OO OpenOffice 953OO object oriented 954OOB out of band 955OOE out of order execution 956OOM out of memory 957OOO OpenOffice.org 958OOP object oriented programming 959OOPS object oriented programming systems 960OOSE object oriented software engineering 961OPM operations per minute 962OPS operations per second 963OQL Object Query Language 964ORB object request broker 965ORM object-relational mapping 966OS operating system 967OSD open source definition 968OSF open software foundation 969OSI Open Source Initiative 970OSI open systems interconnection 971OSPF open shortest path first 972OSPM OS power management 973OSS open sound system 974OSS open source software 975OSVW operating system visible workarounds 976OTP one time password 977OTP open telecom platform 978OU organizational unit 979OUI organizationally unique identifier 980OWL Web Ontology Language 981P2P PCI to PCI 982P2P peer to peer 983PA phase accumulator 984PA physical address 985PAAS platform as a service 986PAC phase-amplitude converter 987PAE physical address extension 988PAL phase alternating line 989PAL programmable array logic 990PAM pluggable authentication modules 991PAM pulse amplitude modulation 992PAP password authentication protocol 993PAT page attribute table 994PAT port address translation 995PATA parallel ATA 996PAX portable archive exchange 997PBE pending break encoding 998PBE programming by example 999PC personal computer 1000PC program counter 1001PCB printed circuit board 1002PCB process control block 1003PCC Portable C Compiler 1004PCD page-level cache disable 1005PCE path computation element 1006PCE performance-monitor counter enable 1007PCEP Path Computation Element Protocol 1008PCH platform controller hub 1009PCI peripheral component interconnect 1010PCM phase change memory 1011PCM pulse code modulation 1012PCMCIA Personal Computer Memory Card International Association 1013PCP Port Control Protocol 1014PD public domain 1015PDA personal digital assistant 1016PDA pushdown automaton 1017PDAG propositional directed acyclic graph 1018PDB power distribution board 1019PDF portable document format 1020PDM pulse-duration modulation 1021PDN pull-down network 1022PDP page {descriptor,directory} page 1023PDS product data sheet 1024PDU protocol data unit 1025PE protection enable 1026PEAP Protected EAP 1027PECI platform environment control interface 1028PEP protocol extension protocol 1029PER packed encoding rules 1030PFS perfect forward secrecy 1031PGAS partitioned global address space 1032PGE page global enable 1033PGP Pretty Good Privacy 1034PHB PCI host bridge 1035PHP PHP: Hypertext Preprocessor 1036PIC position independent code 1037PIC programmable interrupt controller 1038PICNIC problem in chair, not in computer 1039PID process id 1040PIE position independent executable 1041PIL Priority Interrupt Level 1042PIM personal information manager 1043PIM platform-independent model 1044PIO programmed input/output 1045PIPT physically indexed, physically tagged 1046PIQ prefetch input queue 1047PIT programmable interrupt timer 1048PIV personal identity verification 1049PIX Private Internet eXchange 1050PKCS public-key cryptography standards 1051PKI public key infrastructure 1052PLC programmable logic controller 1053PLD programmable logic device 1054PLL phase locked loop 1055PLRU pseudo LRU 1056PLTM package level thermal management 1057PM power management 1058PM {phase,pulse} modulation 1059PME power management event 1060PMI platform management interrupt 1061PMIO port-mapped input/output 1062PMT photo-multiplier tube 1063PMU power management unit 1064PNG portable network graphics 1065PNP plug and play 1066POE power over ethernet 1067POF probability of failure 1068POP Post Office Protocol 1069POP power on password 1070POSIX Portable Operating System Interface [for Unix] 1071POST power on self test 1072POTS plain old telephone system 1073POWER Performance Optimization With Enhanced RISC 1074POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1075PP pair programming 1076PPB PCI [to] PCI bridge 1077PPC PowerPC 1078PPC Power Performance Computing 1079PPI pixels per inch 1080PPM pages per minute 1081PPP Point-to-Point Protocol 1082PPPOA Point-to-Point Protocol over ATM 1083PPPOE Point-to-Point Protocol over Ethernet 1084PPU physics processing unit 1085PRAM Parameter RAM 1086PRBS pseudorandom bit sequence 1087PRG pseudorandom generator 1088PRF pseudorandom function [family] 1089PRML partial response, maximum likelihood 1090PRN pseudorandom {noise,number} 1091PRNG pseudorandom number generator 1092PROM programmable read only memory 1093PRP pseudorandom permutation 1094PRU Programmable Realtime Unit 1095PS PostScript 1096PSD power spectral density 1097PSE page size extensions 1098PSK phase shift keying 1099PSK pre-shared key 1100PSTN public switched telephone network 1101PSW program status word 1102PTE page table entry 1103PTLA pseudo top level aggregator 1104PTP page table page 1105PTV perceived target value 1106PU processing unit 1107PUN physical unit number 1108PV physical volume 1109PVG physical volume group 1110PVI protected-mode virtual interrupt 1111PVST Per-VLAN Spanning Tree 1112PWM pulse width modulation 1113PXE preboot execution environment 1114QA quality assurance 1115QAM quadrature amplitude modulation 1116QAM quality assurance management 1117QBE query by example 1118QC quality control 1119QDI quasi delay insensitive 1120QOS quality of service 1121QVL qualified vendor list 1122R/O read only 1123R/W read/write 1124RA receiver address 1125RA remote assistance 1126RA resource affinity 1127RA router advertisement 1128RAD rapid application development 1129RAID redundant array of {independent,inexpensive} disks 1130RAM random access memory 1131RAS reliability, availability and serviceability 1132RAS remote access service 1133RAS restartable atomic sequence 1134RAS row address strobe 1135RBF radial basis function 1136RBT red-black tree 1137RC release candidate 1138RC remote control 1139RC run commands 1140RCS Revision Control System 1141RCS revision control system 1142RCU read, copy, update 1143RDB Rigid Disk Block 1144RDBMS relational database management system 1145RDF Resource Description Framework 1146RDM relational data model 1147RDMA remote direct memory access 1148RDRAM Rambus DRAM 1149RE regular expression 1150REST representational state transfer 1151RF radio frequency 1152RFI radio frequency interference 1153RFO request for ownership 1154RGB red green blue 1155RGBA red green blue alpha 1156RGMII reduced gigabit media independent interface 1157RH read hit 1158RHEL Red Hat Enterprise Linux 1159RHL Red Hat Linux 1160RIB routing information base 1161RIFF Resource Interchange File Format 1162RIP Raster Image Processor 1163RIP Routing Information Protocol 1164RIR regional Internet registry 1165RISC reduced instruction set {computer,computing} 1166RKM ROM Kernel Manual 1167RLE run length encoding 1168RLL run length limited 1169RLO right-to-left override 1170RM read miss 1171RMI remote method invocation 1172RMO Relaxed Memory Ordering 1173RMPM rapid memory power management 1174RMS root mean square 1175RMW read, modify, write 1176RNG random number generator 1177ROM read only memory 1178RPC remote procedure call 1179RPKI resource PKI 1180RPL requested privilege level 1181RPM revolutions per minute 1182RPN reverse Polish notation 1183RPVST Rapid Per-VLAN Spanning Tree 1184RR random replacement 1185RR round robin 1186RS relay station 1187RSA Rivest, Shamir, [and] Adleman 1188RSIP Realm Specific IP 1189RSN Robust Secure Network 1190RSS really simple syndication 1191RSS residual sum of squares 1192RSTP Rapid Spanning Tree Protocol 1193RT real time 1194RTC real time clock 1195RTC real time computing 1196RTF rich text format 1197RTL register transfer language 1198RTL resistor-transistor logic 1199RTL right to left 1200RTOS real time operating system 1201RTS request to send 1202RTT round trip time 1203RUP rational unified process 1204RW Rabin-Williams 1205RWM read-write memory 1206RX {receive,receiver} 1207S/PDIF Sony/Philips Digital Interface Format 1208SA security advisory 1209SA security association 1210SA source address 1211SA structured analysis 1212SAAS software as a service 1213SACD super audio compact disc 1214SAD security association database 1215SAL {service,system} abstraction layer 1216SAM serial access memory 1217SAM sum addressed memory 1218SAN storage area network 1219SAP service access point 1220SAPIC streamlined advanced programmable interrupt controller 1221SASD structured analysis, structured design 1222SASI Shugart Associates System Interface 1223SASL simple authentication [and] security layer 1224SATA serial advanced technology attachment 1225SAX simple API for XML 1226SB sound blaster 1227SBU standard build unit 1228SC store conditional 1229SCA source code analyzer 1230SCADA supervisory control and data acquisition 1231SCC single chip cloud 1232SCC source code control 1233SCCS Source Code Control System 1234SCI scalable coherent interface 1235SCI system control interrupt 1236SCM software configuration management 1237SCM source code management 1238SCM storage-class memory 1239SCP secure copy 1240SCSI Small Computer System Interface 1241SCTP Stream Control Transmission Protocol 1242SDEI software delegated exception interface 1243SDI symbol deinterleave 1244SDK software development kit 1245SDL Simple Declarative Language 1246SDL Simple Direct-media Layer 1247SDLC {software,system,systems} development life cycle 1248SDN software defined networking 1249SDRAM synchronous dynamic random access memory 1250SDS software defined storage 1251SDT syntax-directed translation 1252SEA synchronous external abort 1253SEGV segmentation violation 1254SEO search engine optimization 1255SFC sequential function chart 1256SFI simple firmware interface 1257SFI software fault isolation 1258SFTP SSH File Transfer Protocol 1259SFTP Serial File Transfer Protocol 1260SFTP Simple File Transfer Protocol 1261SGMII serial gigabit media independent interface 1262SGRAM synchronous graphics random access memory 1263SHA secure hash algorithm 1264SIDH supersingular isogeny Diffie-Hellman 1265SIEM security information and event management 1266SIFS short inter-frame space 1267SIMD single instruction, multiple data 1268SIMM single inline memory module 1269SIP Session Initiation Protocol 1270SIR signal-to-interference ratio 1271SIR slow infrared 1272SISD single instruction, single data 1273SLAAC stateless address auto-configuration 1274SLC single-level cell 1275SLDRAM synchronous-link dynamic random access memory 1276SLED single large expensive disk 1277SLI scalable link interface 1278SLI scan-line interleave 1279SLOC source lines of code 1280SLRU segmented LRU 1281SMA smart memory access 1282SMAF system management action field 1283SMAP Simple Mail Access Protocol 1284SMAP supervisor mode access prevention 1285SMART self-monitoring analysis and reporting technology 1286SMB Server Message Block 1287SMB system management bus 1288SMBIOS System Management BIOS 1289SMC system management controller 1290SMEP supervisor mode execution protection 1291SMF single mode fiber 1292SMI structure of management information 1293SMI system management interrupt 1294SMM system management mode 1295SMP symmetric multiprocessing 1296SMT simultaneous multithreading 1297SMTP Simple Mail Transfer Protocol 1298SMU system management unit 1299SNAP Sub-Network Access Protocol 1300SNIA Storage Networking Industry Association 1301SNMP Simple Network Management Protocol 1302SNR signal-to-noise ratio 1303SOA service oriented architecture 1304SOAP Simple Object Access Protocol 1305SOC system on chip 1306SOF start of frame 1307SOH start of header 1308SOHO small office/home office 1309SOL serial over LAN 1310SP service pack 1311SP stack pointer 1312SPARC scalable processor architecture 1313SPARQL SPARQL Protocol and RDF Query Language 1314SPD security policy database 1315SPD serial presence detect 1316SPDIF Sony/Philips digital interface format 1317SPI serial peripheral interface 1318SPI stateful packet inspection 1319SPL system interrupt priority level 1320SPL spinlock 1321SPMD single process, multiple data 1322SPR special purpose register 1323SPT sectors per track 1324SQA software quality assurance 1325SQL Structured Query Language 1326SRAM static random access memory 1327SRC sample rate conversion 1328SS self-snoop 1329SS stack segment 1330SSA static single assignment 1331SSAP source service access point 1332SSB single-sideband modulation 1333SSD solid state drive 1334SSE streaming SIMD extensions 1335SSFDC solid state floppy disc card 1336SSH secure shell 1337SSI server side includes 1338SSID service set identifier 1339SSL secure sockets layer 1340SSP stack smashing protection 1341STC software thermal control 1342STD state transition diagram 1343STP Spanning Tree Protocol 1344STP shielded twisted pair 1345SUS Single Unix Specification 1346SUT system under test 1347SVG scalable vector graphics 1348SVGA Super Video Graphics Array 1349SVI {switch,switched} virtual interface 1350SVM secure virtual machine 1351SVM support vector machine 1352SVR System V Release 1353SVS Separate Virtual Space 1354SWF Shockwave Flash 1355SWIG simplified wrapper [and] interface generator 1356SYR symbol timing recovery 1357TA test assertion 1358TA transmitter address 1359TAI international atomic time 1360TAO track at once 1361TAOCP The Art of Computer Programming 1362TAP Test Anything Protocol 1363TAS test and set 1364TB terabyte 1365TCB trace capture buffer 1366TCB trusted computing base 1367TCC thermal control circuit 1368TCL tool command language 1369TCP Transmission Control Protocol 1370TCQ tagged command queueing 1371TDC time [to] digital converter 1372TDD test driven development 1373TDD time division duplex 1374TDM time division multiplexing 1375TDMA time division multiple access 1376TDOA time difference of arrival 1377TDP thermal design {point,power} 1378TECO Text Editor and Corrector 1379TFT thin film transistor 1380TFTP Trivial File Transfer Protocol 1381TIAS try it and see 1382TIFF tagged image file format 1383TITS try it to see 1384TK temporal key 1385TKIP Temporal Key Integrity Protocol 1386TLA top level aggregator 1387TLB translation lookaside buffer 1388TLD top level domain 1389TLS thread local storage 1390TLS transport layer security 1391TM Turing machine 1392TM thermal monitor 1393TMDS transition minimized differential signaling 1394TMO timeout 1395TOD time of day 1396TOS terms of service 1397TOS trusted operating system 1398TOS type of service 1399TP transaction processing 1400TPI tracks per inch 1401TPM transactions per minute 1402TPM trusted platform module 1403TPR task priority register 1404TPS transactions per second 1405TPS transmission parameters signaling 1406TR task register 1407TR token ring 1408TRL timing recovery loop 1409TRNG true random number generator 1410TS terminal services 1411TS time series 1412TS time stamp 1413TS transport stream 1414TSAN Thread Sanitizer 1415TSC time stamp counter 1416TSD time stamp disable 1417TSDB time series database 1418TSL test, set, lock 1419TSO time sharing option 1420TSO Total Store Ordering 1421TSP Time-Stamp Protocol 1422TSP Tunnel Setup Protocol 1423TSP time synchronization protocol 1424TSP traveling salesman problem 1425TSS task state segment 1426TTL time to live 1427TTL transistor-transistor logic 1428TTM translation table maps 1429TTY teletype 1430TUI {terminal,text-based,textual} user interface 1431TX {transmit out,transmitter} 1432TZ time zone 1433UAC user {access,account} control 1434UAF use-after-free 1435UART universal asynchronous receiver/transmitter 1436UAT user acceptance testing 1437UB undefined behavior 1438UBSAN Undefined Behavior Sanitizer 1439UC uncacheable 1440UCS uniform-cost search 1441UDMA ultra DMA 1442UDO ultra density optical 1443UDP User Datagram Protocol 1444UEFI unified extensible firmware interface 1445UFS Unix File System 1446UGA universal graphics adapter 1447UI unit interval 1448UI user interface 1449UID unique identifier 1450UID user identifier 1451UL upload 1452UMA uniform memory access 1453UMA upper memory area 1454UMB upper memory block 1455UML unified modeling language 1456UMPC ultra-mobile PC 1457UPNP universal plug and play 1458UPS uninterruptible power supply 1459URI uniform resource identifier 1460URL uniform resource locator 1461URN uniform resource name 1462USART universal synchronous/asynchronous receiver/transmitter 1463USB universal serial bus 1464USWC uncacheable speculative write combining 1465UT unit test 1466UTC coordinated universal time 1467UTP unshielded twisted pair 1468UUCP Unix-to-Unix Copy Protocol 1469UUID universally unique identifier 1470UUOC useless use of cat 1471UUT unit under test 1472UX user experience 1473VA vertical alignment 1474VA virtual address 1475VA volt-ampere 1476VAX virtual address extension 1477VB Visual Basic 1478VCA variable-gain amplifier 1479VCC common collector voltage 1480VCF voltage-controlled filter 1481VCM virtual channel memory 1482VCO voltage-controlled oscillator 1483VCS version control system 1484VESA Video Electronics Standards Association 1485VFO variable-frequency oscillator 1486VG volume group 1487VGA Video Graphics Array 1488VHDCI very high density cable interconnect 1489VID {VLAN,voltage level} identifier 1490VIM Vi IMproved 1491VIPT virtually indexed, physically tagged 1492VIVT virtually indexed, virtually tagged 1493VLAN virtual local area network 1494VLIW very long instruction word 1495VLSI very large scale integration 1496VLSM variable length subnet mask 1497VM virtual {machine,memory} 1498VME virtual mode extension 1499VMX vector multimedia extensions 1500VMX virtual machine extensions 1501VOD video on demand 1502VPN virtual private network 1503VR virtual reality 1504VRAM video random access memory 1505VRF virtual routing and forwarding 1506VRM voltage regulator module 1507VRRP Virtual Router Redundancy Protocol 1508VSTP VLAN Spanning Tree Protocol 1509VTP VLAN Trunking Protocol 1510W watt 1511W3C World Wide Web Consortium 1512WAMP Web Application Messaging Protocol 1513WAN wide area network 1514WAP Wireless Application Protocol 1515WAP wireless access point 1516WDM Windows Driver Model 1517WDDM Windows Display Driver Model 1518WDT watchdog timer 1519WEP Wired Equivalent Privacy 1520WFI wait for interrupt 1521WFQ weighted fair queuing 1522WH write hit 1523WIFI wireless fidelity 1524WLAN wireless local area network 1525WM write miss 1526WMI Windows Management Instrumentation 1527WOL Wake-on-LAN 1528WOM Wake-on-Modem 1529WOR Wake-on-Ring 1530WORM write once read many 1531WP WordPerfect 1532WP word processor 1533WP write protect 1534WPA Wi-Fi Protected Access 1535WPA2 Wi-Fi Protected Access II 1536WPS Wi-Fi Protected Setup 1537WRAM window random access memory 1538WS web services 1539WTC write through caching 1540WWAN wireless wide area network 1541WWW world wide web 1542WYSIWYG what you see is what you get 1543XBAR crossbar 1544XDMCP X Display Manager control protocol 1545XER XML encoding rules 1546XGA Extended Graphics Array 1547XHR XMLHttpRequest 1548XIP execute in place 1549XML Extensible Markup Language 1550XOR exclusive or 1551XP extreme programming 1552XSI X/Open System Interface 1553XSL extensible stylesheet language 1554XSS cross site scripting 1555XT extended technology 1556XUL XML user interface language 1557YACC yet another compiler compiler 1558YANG yet another next generation 1559YAWPFAPR you are welcome; please file a problem report 1560YP Yellow Pages 1561YTD year to date 1562ZBR zone bit recording 1563ZFOD zero-filled on demand 1564ZFS zettabyte file system 1565ZIF zero insertion force 1566ZIFS zero insertion force socket 1567ZMA zone multicast address 1568