acronyms.comp revision 1.201
1$NetBSD: acronyms.comp,v 1.201 2018/06/20 21:53:15 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 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 32AFS Andrew File System 33AGC automatic gain control 34AGP accelerated graphics port 35AI analog input 36AI artificial intelligence 37AL access list 38AL active link 39ALE address latch enable 40ALS ambient light sensor 41ALU arithmetic and logical unit 42ALUA asymmetric logical unit access 43AM access method 44AM alignment mask 45AM amplitude modulation 46AMI alternate mark inversion 47AMP asymmetric multiprocessing 48AMQP advanced message queuing protocol 49AMT active management technology 50AN Arabic number 51ANR application not responding 52ANSI American National Standards Institute 53AO analog output 54AOL Alert-on-LAN 55AOS add or subtract 56AP access point 57AP application processor 58API application programming interface 59APEI ACPI platform error interface 60APIC advanced programmable interrupt controller 61APIPA automatic private IP addressing 62APM advanced power management 63APM application performance management 64APU accelerated processing unit 65APT advanced persistent threat 66AQM active queue management 67ARAT always running APIC timer 68ARC adaptive replacement cache 69ARC automatic reference counting 70ARM Advanced RISC Machines 71ARP Address Resolution Protocol 72ARPA Advanced Research Projects Agency 73ARQ automatic repeat request 74ARR address range register 75ARU audio response unit 76AS autonomous system 77ASC advanced smart cache 78ASCII American Standard Code for Information Interchange 79ASD agile software development 80ASE advanced software environment 81ASIC application-specific integrated circuit 82ASK amplitude shift keying 83ASLR address space layout randomization 84ASN autonomous system number 85ASPM active state power management 86ASQ automated software quality 87ASR address space register 88AST abstract syntax tree 89AST asynchronous trap 90AT access time 91AT advanced technology 92ATA advanced technology attachment 93ATAPI advanced technology attachment packet interface 94ATC address translation cache 95ATM asynchronous transfer mode 96ATX advanced technology extended 97AV anti virus 98AVL Adelson-Velsky-Landis 99AVX advanced vector extensions 100BA byte align 101BAL basic assembly language 102BAR base address register 103BBS bulletin board system 104BCC blind carbon copy 105BCD binary coded decimal 106BCR byte count register 107BCS base configuration space 108BD baud 109BDD binary decision diagram 110BDI bit deinterleave 111BDUF big design up front 112BEDO burst extended data output 113BER basic encoding rules 114BER bit error {rate,ratio} 115BERT boot error record table 116BFD binary {file,format} descriptor 117BFKL big fscking kernel lock 118BFS breadth-first search 119BFT binary file transfer 120BGA ball grid array 121BGP Border Gateway Protocol 122BGPSEC BGP Security 123BIND Berkeley Internet Name Daemon 124BIOS Basic Input/Output System 125BIOS built-in operating system 126BIST built-in self-test 127BIU bus interface unit 128BKDG BIOS and kernel developer's guide 129BLAS basic linear algebra subprograms 130BLC back light control 131BLOB binary large object 132BM bus master 133BMC baseboard management controller 134BMIC bus master interface controller 135BN boundary neutral 136BNF Backus-Naur form 137BO binary output 138BOF beginning of file 139BOM beginning of message 140BOM byte order mark 141BP base pointer 142BP boot processor 143BPB BIOS parameter block 144BPDU bridge protocol data unit 145BPF Berkeley Packet Filter 146BPI bits per inch 147BPM business process modelling 148BPS bits per second 149BPSK binary phase shift keying 150BQS Berkeley quality software 151BRE basic regular expression 152BS backspace 153BS binary sequence 154BSA basic service area 155BSD Berkeley Software Distribution 156BSF bit scan forward 157BSOD blue screen of death 158BSP binary space partition 159BSP board support package 160BSP bootstrap processor 161BSR bit scan reverse 162BSS basic service set 163BSS block started by symbol 164BSSID basic service set identifier 165BT BitTorrent 166BT Bluetooth 167BT bit test 168BTC bit test [and] complement 169BTR bit test [and] reset 170BTS bit test [and] set 171BTS bug tracking system 172BW bandwidth 173BWM block-write mode 174CA certificate authority 175CAD computer-aided design 176CAM computer assisted manufacturing 177CAM conditional access module 178CAM content addressable memory 179CARP Common Address Redundancy Protocol 180CAS column address strobe 181CAS compare and swap 182CAS computer algebra system 183CASE computer aided software engineering 184CAU control access unit 185CAV constant angular velocity 186CBC cipher block chaining 187CBR constant bit rate 188CC carbon copy 189CCD charge coupled device 190CCI co-channel interferer 191CCNUMA cache-coherent non-uniform memory access 192CD cache disable 193CD compact disc 194CDDA compact disc digital audio 195CDMA code division multiple access 196CDP Cisco Discovery Protocol 197CDRAM cache dynamic random access memory 198CER canonical encoding rules 199CF compact flash 200CFB cipher feedback 201CFG context-free grammar 202CFG control-flow graph 203CG control gate 204CGA Color Graphics Adapter 205CGI common gateway interface 206CGN Carrier-Grade NAT 207CHAP Challenge-Handshake Authentication Protocol 208CHS cylinder/head/sector 209CI continuous integration 210CI {common,component} interface 211CIDR Classless Inter-Domain Routing 212CIFS Common Internet File System 213CIL common intermediate language 214CIR carrier-to-interference ratio 215CIS contact image sensor 216CISC complex instruction set {computer,computing} 217CJK Chinese, Japanese, [and] Korean 218CLF common log format 219CLI command line interface 220CLR common language runtime 221CLTT closed loop thermal throttling 222CLUT color look-up table 223CLV constant linear velocity 224CM configuration management 225CMA concert multithread architecture 226CMC chassis management controller 227CMC corrected machine check 228CMS {configuration,content,course} management system 229CMI control {management,method} interface 230CMOS complementary metal-oxide-semiconductor 231CMP chip multi-processing 232CMS content management system 233CMYK cyan magenta yellow black 234CN {common,canonical} name 235CNC computer numerical control 236CNR carrier-to-noise ratio 237COF current operating frequency 238COFDM coded orthogonal frequency division multiplexing 239COFF common object file format 240COM component object model 241COMA cache-only memory architecture 242CORBA common object request broker architecture 243COS class of service 244COW copy-on-write 245CP continuous pilot 246CPB core performance boost 247CPE common phase error 248CPE common platform enumeration 249CPER common platform error record 250CPG clock pulse generator 251CPL current privilege level 252CPLD complex programmable logic device 253CPP C preprocessor 254CPS characters per second 255CPT command pass through 256CPU central processing unit 257CR carriage return 258CRC cyclic redundancy check 259CRL carrier recovery loop 260CRLF carriage return line feed 261CRT cathode ray tube 262CRUD create, read, update, and delete 263CS cable select 264CS chip select 265CS code segment 266CS computer science 267CSDL {common,conceptual} schema definition language 268CSI channel state information 269CSI common system interface 270CSMA carrier sense multiple access 271CSMA/CA carrier sense multiple access with collision avoidance 272CSMA/CD carrier sense multiple access with collision detection 273CSR control [and] status registers 274CSRG Computer Systems Research Group 275CSS cascading style sheets 276CSV comma-separated values 277CTM close to metal 278CTR counter [mode] 279CTS clear to send 280CUA common user access 281CUT coordinated universal time 282CV control voltage 283CVE common vulnerabilities and exposures 284CVS Concurrent Versions System 285DA destination address 286DAA distributed application architecture 287DAB digital audio broadcasting 288DAC digital [to] analog converter 289DAC discretionary access control 290DAD duplicate address detection 291DANE DNS-based Authentication of Named Entities 292DAO disk at once 293DAP Directory Access Protocol 294DAT digital audio tape 295DAT dynamic acceleration technology 296DB database 297DBA database administrator 298DBA dynamic bandwidth allocation 299DBB data bus buffer 300DBC design by contract 301DBL dynamic buffer limiting 302DBMS database management system 303DBS database server 304DC direct current 305DCC Direct Client-to-Client 306DCC direct cable connect 307DCD data carrier detect 308DCE data control equipment 309DCE distributed computing environment 310DCOM distributed component object model 311DCOP Desktop COmmunication Protocol 312DCS data collection systems 313DCT discrete cosine transform 314DCU data cache unit 315DDC display data channel 316DDE dynamic data exchange 317DDK device driver kit 318DDL data description language 319DDR double data rate 320DDS direct digital sound 321DDWG Digital Display Working Group 322DE debugging extensions 323DE desktop environment 324DEA data encryption algorithm 325DEK data encryption key 326DEP data execution prevention 327DER distinguished encoding rules 328DES Data Encryption Standard 329DF don't fragment 330DFA deterministic finite automaton 331DFC data flow control 332DFS depth first search 333DFS distributed file system 334DFT diagnostic function test 335DFT discrete Fourier transform 336DGL data generation language 337DH Diffie-Hellman 338DHCP Dynamic Host Configuration Protocol 339DIFS distributed inter-frame space 340DIMM dual inline memory module 341DIRT design in real time 342DL diode logic 343DL discrete logarithm 344DL download 345DLE data link escape 346DLL dynamic link library 347DLP discrete logarithm problem 348DMA direct memory access 349DMI desktop management interface 350DMS document management system 351DMT discrete multitone modulation 352DNARD Digital network appliance reference design 353DND drag and drop 354DNS Domain Name System 355DNSSEC DNS Security Extensions 356DOE distributed object environment 357DOF data over fibre 358DOM document object model 359DOS denial of service 360DOS disk operating system 361DP DisplayPort 362DPC deferred procedure call 363DPCM differential pulse code modulation 364DPD dead peer detection 365DPI deep packet inspection 366DPI dots per inch 367DPL descriptor privilege level 368DPS Display PostScript 369DPST display power savings technology 370DRAAS disaster recovery as a service 371DRAM dynamic random access memory 372DRBG deterministic random bit generator 373DRI direct rendering infrastructure 374DRM digital rights management 375DRRS display refresh rate switching 376DS debug store 377DSA digital signature algorithm 378DSAP destination service access point 379DSB double-sideband modulation 380DSDT differentiated system descriptor table 381DSL digital subscriber line 382DSL domain specific language 383DSLAM digital subscriber line access multiplexer 384DSN delivery status notification 385DSO dynamic shared object 386DSP digital signal processor 387DSSS direct sequence spread spectrum 388DTD document type definition 389DTE data terminal equipment 390DTE dumb terminal emulator 391DTL diode-transistor logic 392DTLS datagram transport layer security 393DTS digital thermal sensor 394DUT device under test 395DVB digital video broadcasting 396DVCS distributed version control system 397DVD digital versatile disc 398DVFS dynamic voltage and frequency scaling 399DVI device independent 400DVI Digital Visual Interface 401DVR digital video recorder 402E-XER extended XML encoding rules 403EABI embedded-application binary interface 404EAI Email Address Internationalization 405EAI Enterprise Application Integration 406EAP Extensible Authentication Protocol 407EAPOL EAP over Lan 408EBCDIC Extended Binary Coded Decimal Interchange Code 409EBR extended boot record 410EC elliptic curve 411ECC elliptic curve cryptography 412ECC error correction code 413ECDH elliptic curve Diffie-Hellman 414ECDL elliptic curve discrete logarithm 415ECDLP elliptic curve discrete logarithm problem 416ECDSA elliptic curve digital signature algorithm 417ECL emitter-coupled logic 418ECN explicit congestion notification 419ECP enhanced capability port 420ECS enhanced chip set 421ECS extended configuration space 422EDAC error detection and correction 423EDAT enhanced dynamic acceleration technology 424EdDSA Edwards curve digital signature algorithm 425EDGE explicit data graph execution 426EDID extended display identification data 427EDO extended data out 428EDS electronical data sheet 429EEE energy efficient ethernet 430EEPROM electrically erasable programmable read only memory 431EFI extensible firmware interface 432EFL emitter follower logic 433EFM eight to fourteen modulation 434EGA Enhanced Graphics Adapter 435EGP exterior gateway protocol 436EH extension header 437EIDE enhanced IDE 438EISA extended industry standard architecture 439EINJ error injection table 440ELF executable and linking format 441ELS entry level system 442EMI electro-magnetic interference 443EMP electro-magnetic pulse 444EMR electro-magnetic radiation 445EOF end of file 446EOI end of interrupt 447EOL end of line 448EOT end of transmission 449EPIC explicitly parallel instruction computing 450EPP enhanced parallel port 451EPRML extended partial response, maximum likelihood 452EPROM erasable programmable read only memory 453ERD emergency recovery disk 454ERD entity relationship diagram 455ERE extended regular expression 456ERST error record serialization table 457ESB enterprise service bus 458ESDRAM enhanced synchronous dynamic random access memory 459ESS electronic switching system 460ESS extended service set 461ESSID extended service set identifier 462EST enhanced speedstep 463ETL extract, transform, load 464EU execution unit 465EULA end user license agreement 466FAT file allocation table 467FBRAM frame buffer random access memory 468FCL fiber channel loop 469FCS frame check sequence 470FDC floppy disk controller 471FDD floppy disk drive 472FDDI fiber distributed data interface 473FDE full disk encryption 474FEA finite element analysis 475FEC forward error correction 476FET field-effect transistor 477FF finite field 478FF form feed 479FFDH finite-field Diffie-Hellman 480FFH functional fixed hardware 481FFI foreign function interface 482FFM focus follows mouse 483FFS Fast File System 484FFS find first set 485FFT fast Fourier transform 486FG floating gate 487FHSS frequency hop spread spectrum 488FID frequency identifier 489FIFO first in, first out 490FILO first in, last out 491FIPS Federal Information Processing Standards 492FIR fast infrared 493FLOPS floating [point] operations per second 494FLOSS free/libre/open source software 495FM frequency modulation 496FMR false match rate 497FOSS free/open source software 498FPGA field programmable gate array 499FPM fast page mode 500FPR floating point register 501FPU floating point unit 502FQDN fully qualified domain name 503FRR false rejection rate 504FRU field replaceable unit 505FS file system 506FSB front side bus 507FSCK file system check 508FSF Free Software Foundation 509FSK frequency shift keying 510FSM finite-state machine 511FTA fault tree analysis 512FTL flash translation layer 513FTP File Transfer Protocol 514FTPS File Transfer Protocol Secure 515FUS fast user switching 516FWH firmware hub 517FWS folding white space 518GAL generic array logic 519GAS generic address structure 520GC garbage collector 521GCM Galois counter mode 522GCR group-coded recording 523GDT global descriptor table 524GEM graphics environment manager 525GEM graphics execution manager 526GENA general event notification architecture 527GHC Glasgow Haskell compiler 528GHES generic hardware error source 529GIC generic interrupt controller 530GID group identifier 531GIF graphics interchange format 532GMCH graphics and memory controller hub 533GNU GNU's Not Unix 534GOP graphics output protocol 535GOT global offset table 536GPE general purpose event 537GPF general protection fault 538GPG GNU Privacy Guard 539GPL [GNU] General Public License 540GPR general purpose register 541GPS generalized processor sharing 542GPT GUID partition table 543GPU graphics processing unit 544GR golden ratio 545GRE generic routing encapsulation 546GSI global system interrupt 547GUI graphical user interface 548GUID globally unique identifier 549GVFS git virtual file system 550HA high availability 551HAL hardware abstraction layer 552HAT hashed array tree 553HATEOAS hypermedia as the engine of application state 554HBA host bus adapter 555HCF halt and catch fire 556HCI host controller interface 557HCI human-computer interaction 558HCL hardware compatibility list 559HDCP High-bandwidth Digital Content Protection 560HDD hard disk drive 561HDL hardware description language 562HDMI High-Definition Multimedia Interface 563HDTV high-definition television 564HECI host embedded controller interface 565HEST hardware error source table 566HF high frequency 567HFM highest frequency mode 568HID human interface device 569HKP HTTP Keyserver Protocol 570HLL high-level language 571HMA high memory area 572HMI human-machine interface 573HOOD hierarchical object oriented design 574HP Hewlett-Packard 575HPC high performance computing 576HPET high precision event timer 577HSM hardware security module 578HSM hierarchical storage management 579HT hyper-threading 580HTC hardware thermal control 581HTCC high temperature co-fired ceramic 582HTML HyperText Markup Language 583HTT hyper-threading technology 584HTTP Hypertext Transfer Protocol 585HTTPS Hypertext Transfer Protocol Secure 586HVM hardware virtual machine 587HZ Hertz 588I2O intelligent input/output 589IA information assurance 590IAAS infrastructure as a service 591IANA Internet Assigned Numbers Authority 592IBC iterated block cipher 593IBM International Business Machines 594IBS instruction based sampling 595IBSS independent basic service set 596IC integrated circuit 597ICA independent computer architecture 598ICB Internet Citizen's Band 599ICE in-circuit emulator 600ICE internal compiler error 601ICH I/O controller hub 602ICMP Internet Control Message Protocol 603ICT information and communications technology 604ICW initialization command word 605IDA Intel dynamic acceleration 606IDCMP Intuition direct communication message port 607IDE integrated development environment 608IDE integrated drive electronics 609IDPS intrusion detection [and] prevention system 610IDRP inter-domain routing protocol 611IDS intrusion detection system 612IDT interrupt descriptor table 613IE Internet Explorer 614IEC International Electrotechnical Commission 615IEEE Institute of Electrical and Electronics Engineers 616IESG Internet Engineering Steering Group 617IETF Internet Engineering Task Force 618IF intermediate frequency 619IFCM isochronous flow control mode 620IFF Interchange File Format 621IFS internal field separator 622IGD Internet gateway device 623IGMP Internet Group Management Protocol 624IGP interior gateway protocol 625IHV independent hardware vendor 626IKE Internet key exchange 627ILM internal loopback mode 628ILOM integrated lights-out management 629ILP instruction level parallelism 630IM instant messaging 631IMAP Internet Message Access Protocol 632IMC integrated memory controller 633IMCR interrupt mode configuration register 634IMR interrupt mask register 635IMS information management system 636INCITS InterNational Committee for Information Technology Standards 637IO input/output 638IOCTL input/output control 639IOMMU input/output memory management unit 640IOT Internet of Things 641IP Internet Protocol 642IP intellectual property 643IPC interprocess communication 644IPE integrated programming environment 645IPI interprocessor interrupt 646IPMB Intelligent Platform Management Bus 647IPMI Intelligent Platform Management Interface 648IPNG Internet Protocol, Next Generation 649IPS in-plane switching 650IPS intrusion prevention system 651IPSEC Internet Protocol Security 652IRC Internet Relay Chat 653IRDA infrared data association 654IRQ interrupt request 655IRQL interrupt request level 656IRR interrupt request register 657IRTF Internet Research Task Force 658IS information system 659ISA industry standard architecture 660ISA instruction set architecture 661ISDN integrated services digital network 662ISI inter-symbol interference 663ISM industrial, scientific, [and] medical 664ISN initial serial number 665ISO International Standards Organization 666ISOC Internet Society 667ISP Internet service provider 668ISR in-service register 669ISR interrupt service routine 670IST interrupt stack table 671ISV independent software vendor 672IT information technology 673ITB Intel Turbo Boost 674ITIL information technology infrastructure library 675ITP in-target probe 676ITSM IT service management 677IV initialization vector 678IVT interrupt vector table 679JBOD just a bunch of disks 680JFET junction [gate] field-effect transistor 681JIT just in time 682JPEG Joint Photographic Experts Group 683JRE Java Runtime Environment 684JSON JavaScript Object Notation 685JTAG joint test action group 686KASLR kernel address space layout randomization 687KB keyboard 688KB kilobyte 689KBD keyboard 690KBD kilobaud 691KCS keyboard controller style 692KLOC thousand lines of code 693KMS kernel-mode setting 694KPI kernel programming interface 695KVA kernel virtual address 696KVM kernel virtual machine 697KVM kernel virtual memory 698KVM keyboard, video, [and] mouse 699LAMP Linux Apache MySQL {Perl,PHP,Python} 700LAN local area network 701LAPIC local advanced programmable interrupt controller 702LAR load access rights 703LBA logical block addressing 704LBS location-based service 705LCD liquid crystal display 706LCP link control protocol 707LDA local delivery agent 708LDAP Lightweight Directory Access Protocol 709LDR light-dependent resistor 710LDT local descriptor table 711LE logical extent 712LED light emitting diode 713LER label edge router 714LF line feed 715LF low frequency 716LFM lowest frequency mode 717LFN long file names 718LFO low-frequency oscillation 719LFS log-structured file system 720LFU least frequently used 721LHP loop heat pipe 722LIFO last in, first out 723LILO LInux LOader 724LILO last in, last out 725LINT local interrupt 726LIR local Internet registry 727LKM {Linux,loadable} kernel module 728LKML Linux kernel mailing list 729LL load linked 730LL/SC load linked/store conditional 731LLC logical link control 732LLDP link layer discovery protocol 733LLF low level format 734LLMNR link-local multicast name resolution 735LLVM Low Level Virtual Machine 736LM long mode 737LMM link management mode 738LNO loop nest optimization 739LOC lines of code 740LOM lights-out management 741LPC low pin count 742LPS local positioning system 743LRC longitudinal redundancy check 744LRM left-to-right mark 745LRO left-to-right override 746LRU least recently used 747LSB Linux standards base 748LSB least significant {bit,byte} 749LSI large scale integration 750LSL load segment limit 751LSN Large Scale NAT 752LSN log sequence number 753LSR label switch router 754LTCC low temperature co-fired ceramic 755LTO linear tape-open 756LTO link time optimization 757LTR left to right 758LTR load task register 759LTR letter(-sized paper) 760LTS long term support 761LUA Lua Uppercase Accident 762LUN logical unit number 763LV logical volume 764LVM logical volume management 765LVT local vector table 766LWP light-weight process 767LZW Lempel Ziv Welch 768MAC mandatory access control 769MAC {media,medium} access control 770MAC message authentication {check,code} 771MADT multiple APIC descriptor table 772MB megabyte 773MBA multi-boot agent 774MBR master boot record 775MBS megabits per second 776MC memory controller 777MCA machine check architecture 778MCA MicroChannel architecture 779MCC multiversion concurrency control 780MCE machine check exception 781MCGA Multi-Color Graphics Array 782MCH memory controller hub 783MCM multi-chip module 784MCQ memory controlled queue 785MD machine-dependent 786MD-SAL model-driven service abstraction layer 787MDA mail delivery agent 788MDA Monochrome Display Adapter 789MDRAM multibank dynamic random access memory 790MESI modified, exclusive, shared, invalid 791MFC merge from current 792MFC Microsoft Foundation Classes 793MFM modified frequency modulation 794MI machine-independent 795MIB management information base 796MIC message integrity {check,code} 797MID mobile Internet device 798MIDI musical instrument digital interface 799MIF management information format 800MII media independent interface 801MIM man in the middle 802MIMD multiple instruction, multiple data 803MIME Multipurpose Internet Mail Extensions 804MIMO multiple input multiple output 805MIPS million instructions per second 806MISD multiple instruction, single data 807MIT Massachusetts Institute of Technology 808MITM man in the middle 809ML machine language 810ML machine learning 811ML mailing list 812ML markup language 813ML maximum likelihood 814MLC multi-level cell 815MLD multicast listener discovery 816MLHP micro loop heat pipe 817MMF multi-mode fiber 818MMIC monolithic microwave integrated circuit 819MMIO memory mapped input/output 820MMORPG massive multiplayer online role playing game 821MMU memory management unit 822MMX matrix math extension 823MMX multimedia extension 824MMX multiple math extension 825MO magneto-optical 826MOESI modified, owned, exclusive, shared, invalid 827MOF maximum operating frequency 828MOSFET metal-oxide-semiconductor field-effect transistor 829MOSI modified, owned, shared, invalid 830MP multi-platform 831MP multiplayer 832MP {multiprocessing,multiprocessor} 833MPEG moving picture experts group 834MPI message passing interface 835MPLS Multiprotocol Label Switching 836MPP massively parallel processor 837MPS memory pool system 838MPS multiprocessor specification 839MQTT Message Queuing Telemetry Transport 840MR modem ready 841MRU most recently used 842MS Microsoft 843MSB most significant {bit,byte} 844MSE mean square error 845MSF minutes seconds frames 846MSI message signaled interrupt 847MSI modified, shared, invalid 848MSR {machine state,model-specific} register 849MSS maximum segment size 850MSTP Multiple Spanning Tree Protocol 851MT machine translation 852MTA mail transfer agent 853MTBF mean time between failures 854MTP media transfer protocol 855MTRR memory type range register 856MTTF mean time to failure 857MTU maximum transmission unit 858MUA mail user agent 859MUD multi-user domain 860MVCC multiversion concurrency control 861MWE module width encoding 862MX mail exchange 863NACK negative acknowledgement 864NAN not a number 865NAPT Network Address Port Translation 866NAS network attached storage 867NAT network address translation 868NAV network allocation vector 869NC numerical control 870NCO numerically-controlled oscillator 871NCP Network Control Protocol 872NCQ native command queuing 873ND neighbor discovery 874NDFA nondeterministic finite automaton 875NE numeric error 876NFA nondeterministic finite automaton 877NFC near-field communication 878NFCI no functional change intended 879NFS network file system 880NFV network function virtualization 881NIA next instruction address 882NIC network information center 883NIC network interface card 884NIDS network intrusion detection system 885NIP network interface protocol 886NIPS network intrusion prevention system 887NIS network information service 888NIST National Institute of Standards and Technology 889NLS native language support 890NMI non-maskable interrupt 891NNTP Network News Transfer Protocol 892NOC network operations center 893NOP no operation 894NOS network operating system 895NP nondeterministic polynomial time 896NRZ non-return to zero 897NSA nation-state adversary 898NSA no such agency 899NSA National Security Agency 900NTM non-deterministic Turing machine 901NTP Network Time Protocol 902NUMA non-uniform memory access 903NVRAM non-volatile random access memory 904NW not write-through 905NX no execute 906OAEP optimal asymmetric encryption padding 907OAM operations, administration, and {management,maintenance} 908OBO off by one 909OBOE off by one error 910OCL object constraint language 911OCR optical character recognition 912ODCM on-demand clock modulation 913ODT on-die termination 914OEM original equipment manufacturer 915OFB output feedback 916OFDM orthogonal frequency division multiplexing 917OFET organic field-effect transistor 918OLAP online analytical processing 919OLE object linking and embedding 920OLTP online transaction processing 921ONFI open nand flash interface 922OO OpenOffice 923OO object oriented 924OOB out of band 925OOE out of order execution 926OOM out of memory 927OOO OpenOffice.org 928OOP object oriented programming 929OOPS object oriented programming systems 930OOSE object oriented software engineering 931OPM operations per minute 932OPS operations per second 933OQL Object Query Language 934ORB object request broker 935ORM object-relational mapping 936OS operating system 937OSD open source definition 938OSF open software foundation 939OSI Open Source Initiative 940OSI open systems interconnection 941OSPF open shortest path first 942OSPM OS power management 943OSS open sound system 944OSS open source software 945OSVW operating system visible workarounds 946OTP one time password 947OTP open telecom platform 948OU organizational unit 949OUI organizationally unique identifier 950OWL Web Ontology Language 951P2P PCI to PCI 952P2P peer to peer 953PA phase accumulator 954PA physical address 955PAAS platform as a service 956PAC phase-amplitude converter 957PAE physical address extension 958PAL phase alternating line 959PAL programmable array logic 960PAM pluggable authentication modules 961PAM pulse amplitude modulation 962PAP password authentication protocol 963PAT page attribute table 964PAT port address translation 965PATA parallel ATA 966PAX portable archive exchange 967PBE pending break encoding 968PBE programming by example 969PC personal computer 970PC program counter 971PCB printed circuit board 972PCB process control block 973PCC Portable C Compiler 974PCD page-level cache disable 975PCE path computation element 976PCE performance-monitor counter enable 977PCEP Path Computation Element Protocol 978PCH platform controller hub 979PCI peripheral component interconnect 980PCM phase change memory 981PCM pulse code modulation 982PCMCIA Personal Computer Memory Card International Association 983PCP Port Control Protocol 984PD public domain 985PDA personal digital assistant 986PDA pushdown automaton 987PDAG propositional directed acyclic graph 988PDB power distribution board 989PDF portable document format 990PDM pulse-duration modulation 991PDN pull-down network 992PDP page {descriptor,directory} page 993PDS product data sheet 994PDU protocol data unit 995PE protection enable 996PEAP Protected EAP 997PECI platform environment control interface 998PEP protocol extension protocol 999PER packed encoding rules 1000PFS perfect forward secrecy 1001PGAS partitioned global address space 1002PGE page global enable 1003PGP Pretty Good Privacy 1004PHB PCI host bridge 1005PHP PHP: Hypertext Preprocessor 1006PIC position independent code 1007PIC programmable interrupt controller 1008PICNIC problem in chair, not in computer 1009PID process id 1010PIE position independent executable 1011PIL Priority Interrupt Level 1012PIM personal information manager 1013PIM platform-independent model 1014PIO programmed input/output 1015PIPT physically indexed, physically tagged 1016PIQ prefetch input queue 1017PIT programmable interrupt timer 1018PIV personal identity verification 1019PKCS public-key cryptography standards 1020PKI public key infrastructure 1021PLC programmable logic controller 1022PLD programmable logic device 1023PLL phase locked loop 1024PLRU pseudo LRU 1025PLTM package level thermal management 1026PM power management 1027PM {phase,pulse} modulation 1028PME power management event 1029PMI platform management interrupt 1030PMIO port-mapped input/output 1031PMT photo-multiplier tube 1032PMU power management unit 1033PNG portable network graphics 1034PNP plug and play 1035POE power over ethernet 1036POF probability of failure 1037POP Post Office Protocol 1038POP power on password 1039POSIX Portable Operating System Interface [for Unix] 1040POST power on self test 1041POTS plain old telephone system 1042POWER Performance Optimization With Enhanced RISC 1043POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1044PP pair programming 1045PPB PCI [to] PCI bridge 1046PPC PowerPC 1047PPC Power Performance Computing 1048PPI pixels per inch 1049PPM pages per minute 1050PPP Point-to-Point Protocol 1051PPPOA Point-to-Point Protocol over ATM 1052PPPOE Point-to-Point Protocol over Ethernet 1053PPU physics processing unit 1054PRBS pseudorandom bit sequence 1055PRG pseudorandom generator 1056PRF pseudorandom function [family] 1057PRML partial response, maximum likelihood 1058PRN pseudorandom {noise,number} 1059PRNG pseudorandom number generator 1060PROM programmable read only memory 1061PRP pseudorandom permutation 1062PSD power spectral density 1063PSE page size extensions 1064PSK phase shift keying 1065PSK pre-shared key 1066PSTN public switched telephone network 1067PSW program status word 1068PTE page table entry 1069PTLA pseudo top level aggregator 1070PTP page table page 1071PTV perceived target value 1072PU processing unit 1073PUN physical unit number 1074PV physical volume 1075PVG physical volume group 1076PVI protected-mode virtual interrupt 1077PVST Per-VLAN Spanning Tree 1078PWM pulse width modulation 1079PXE preboot execution environment 1080QA quality assurance 1081QAM quadrature amplitude modulation 1082QAM quality assurance management 1083QBE query by example 1084QC quality control 1085QDI quasi delay insensitive 1086QOS quality of service 1087QVL qualified vendor list 1088R/O read only 1089R/W read/write 1090RA receiver address 1091RA remote assistance 1092RA resource affinity 1093RA router advertisement 1094RAD rapid application development 1095RAID redundant array of {independent,inexpensive} disks 1096RAM random access memory 1097RAS reliability, availability and serviceability 1098RAS remote access service 1099RAS restartable atomic sequence 1100RAS row address strobe 1101RBF radial basis function 1102RBT red-black tree 1103RC release candidate 1104RC remote control 1105RCS Revision Control System 1106RCS revision control system 1107RCU read, copy, update 1108RDB Rigid Disk Block 1109RDBMS relational database management system 1110RDF Resource Description Framework 1111RDM relational data model 1112RDMA remote direct memory access 1113RE regular expression 1114REST representational state transfer 1115RF radio frequency 1116RFI radio frequency interference 1117RFO request for ownership 1118RGB red green blue 1119RGBA red green blue alpha 1120RGMII reduced gigabit media independent interface 1121RH read hit 1122RHEL Red Hat Enterprise Linux 1123RHL Red Hat Linux 1124RIB routing information base 1125RIFF Resource Interchange File Format 1126RIP Routing Information Protocol 1127RIR regional Internet registry 1128RISC reduced instruction set {computer,computing} 1129RKM ROM Kernel Manual 1130RLE run length encoding 1131RLL run length limited 1132RLO right-to-left override 1133RM read miss 1134RMI remote method invocation 1135RMO Relaxed Memory Ordering 1136RMPM rapid memory power management 1137RMS root mean square 1138RMW read, modify, write 1139RNG random number generator 1140ROM read only memory 1141RPC remote procedure call 1142RPKI resource PKI 1143RPL requested privilege level 1144RPM revolutions per minute 1145RPN reverse Polish notation 1146RPVST Rapid Per-VLAN Spanning Tree 1147RR random replacement 1148RR round robin 1149RS relay station 1150RSA Rivest, Shamir, [and] Adleman 1151RSIP Realm Specific IP 1152RSN Robust Secure Network 1153RSS really simple syndication 1154RSS residual sum of squares 1155RSTP Rapid Spanning Tree Protocol 1156RT real time 1157RTC real time clock 1158RTC real time computing 1159RTF rich text format 1160RTL register transfer language 1161RTL resistor-transistor logic 1162RTL right to left 1163RTOS real time operating system 1164RTS request to send 1165RTT round trip time 1166RUP rational unified process 1167RW Rabin-Williams 1168RWM read-write memory 1169RX {receive,receiver} 1170S/PDIF Sony/Philips Digital Interface Format 1171SA security advisory 1172SA security association 1173SA source address 1174SA structured analysis 1175SAAS software as a service 1176SACD super audio compact disc 1177SAD security association database 1178SAL {service,system} abstraction layer 1179SAM serial access memory 1180SAM sum addressed memory 1181SAN storage area network 1182SAP service access point 1183SAPIC streamlined advanced programmable interrupt controller 1184SASD structured analysis, structured design 1185SASI Shugart Associates System Interface 1186SASL simple authentication [and] security layer 1187SATA serial advanced technology attachment 1188SAX simple API for XML 1189SB sound blaster 1190SBU standard build unit 1191SC store conditional 1192SCA source code analyzer 1193SCADA supervisory control and data acquisition 1194SCC single chip cloud 1195SCC source code control 1196SCCS Source Code Control System 1197SCI scalable coherent interface 1198SCI system control interrupt 1199SCM software configuration management 1200SCM source code management 1201SCM storage-class memory 1202SCP secure copy 1203SCSI Small Computer System Interface 1204SCTP Stream Control Transmission Protocol 1205SDEI software delegated exception interface 1206SDI symbol deinterleave 1207SDK software development kit 1208SDL Simple Declarative Language 1209SDL Simple Direct-media Layer 1210SDLC {software,system,systems} development life cycle 1211SDN software defined networking 1212SDRAM synchronous dynamic random access memory 1213SDS software defined storage 1214SDT syntax-directed translation 1215SEA synchronous external abort 1216SEGV segmentation violation 1217SEO search engine optimization 1218SFC sequential function chart 1219SFI simple firmware interface 1220SFI software fault isolation 1221SFTP SSH File Transfer Protocol 1222SFTP Serial File Transfer Protocol 1223SFTP Simple File Transfer Protocol 1224SGMII serial gigabit media independent interface 1225SGRAM synchronous graphics random access memory 1226SHA secure hash algorithm 1227SIDH supersingular isogeny Diffie-Hellman 1228SIEM security information and event management 1229SIFS short inter-frame space 1230SIMD single instruction, multiple data 1231SIMM single inline memory module 1232SIP Session Initiation Protocol 1233SIR signal-to-interference ratio 1234SIR slow infrared 1235SISD single instruction, single data 1236SLAAC stateless address auto-configuration 1237SLC single-level cell 1238SLDRAM synchronous-link dynamic random access memory 1239SLED single large expensive disk 1240SLI scalable link interface 1241SLI scan-line interleave 1242SLOC source lines of code 1243SLRU segmented LRU 1244SMA smart memory access 1245SMAF system management action field 1246SMAP Simple Mail Access Protocol 1247SMAP supervisor mode access prevention 1248SMART self-monitoring analysis and reporting technology 1249SMB Server Message Block 1250SMB system management bus 1251SMBIOS System Management BIOS 1252SMC system management controller 1253SMEP supervisor mode execution protection 1254SMF single mode fiber 1255SMI structure of management information 1256SMI system management interrupt 1257SMM system management mode 1258SMP symmetric multiprocessing 1259SMT simultaneous multithreading 1260SMTP Simple Mail Transfer Protocol 1261SMU system management unit 1262SNAP Sub-Network Access Protocol 1263SNIA Storage Networking Industry Association 1264SNMP Simple Network Management Protocol 1265SNR signal-to-noise ratio 1266SOA service oriented architecture 1267SOAP Simple Object Access Protocol 1268SOC system on chip 1269SOF start of frame 1270SOH start of header 1271SOHO small office/home office 1272SOL serial over LAN 1273SP service pack 1274SP stack pointer 1275SPARC scalable processor architecture 1276SPARQL SPARQL Protocol and RDF Query Language 1277SPD security policy database 1278SPD serial presence detect 1279SPDIF Sony/Philips digital interface format 1280SPI serial peripheral interface 1281SPI stateful packet inspection 1282SPL system interrupt priority level 1283SPL spinlock 1284SPMD single process, multiple data 1285SPR special purpose register 1286SPT sectors per track 1287SQA software quality assurance 1288SQL Structured Query Language 1289SRAM static random access memory 1290SRC sample rate conversion 1291SS self-snoop 1292SS stack segment 1293SSA static single assignment 1294SSAP source service access point 1295SSB single-sideband modulation 1296SSD solid state drive 1297SSE streaming SIMD extensions 1298SSFDC solid state floppy disc card 1299SSH secure shell 1300SSI server side includes 1301SSID service set identifier 1302SSL secure sockets layer 1303SSP stack smashing protection 1304STC software thermal control 1305STD state transition diagram 1306STP Spanning Tree Protocol 1307STP shielded twisted pair 1308SUS Single Unix Specification 1309SUT system under test 1310SVG scalable vector graphics 1311SVGA Super Video Graphics Array 1312SVI {switch,switched} virtual interface 1313SVM secure virtual machine 1314SVM support vector machine 1315SVR System V Release 1316SVS Separate Virtual Space 1317SWF Shockwave Flash 1318SWIG simplified wrapper [and] interface generator 1319SYR symbol timing recovery 1320TA test assertion 1321TA transmitter address 1322TAI international atomic time 1323TAO track at once 1324TAOCP The Art of Computer Programming 1325TAP Test Anything Protocol 1326TAS test and set 1327TB terabyte 1328TCB trace capture buffer 1329TCB trusted computing base 1330TCC thermal control circuit 1331TCL tool command language 1332TCP Transmission Control Protocol 1333TCQ tagged command queueing 1334TDC time [to] digital converter 1335TDD test driven development 1336TDD time division duplex 1337TDM time division multiplexing 1338TDMA time division multiple access 1339TDOA time difference of arrival 1340TDP thermal design {point,power} 1341TECO Text Editor and Corrector 1342TFT thin film transistor 1343TFTP Trivial File Transfer Protocol 1344TIAS try it and see 1345TIFF tagged image file format 1346TITS try it to see 1347TK temporal key 1348TKIP Temporal Key Integrity Protocol 1349TLA top level aggregator 1350TLB translation lookaside buffer 1351TLD top level domain 1352TLS thread local storage 1353TLS transport layer security 1354TM Turing machine 1355TM thermal monitor 1356TMDS transition minimized differential signaling 1357TMO timeout 1358TOD time of day 1359TOS terms of service 1360TOS trusted operating system 1361TOS type of service 1362TP transaction processing 1363TPI tracks per inch 1364TPM transactions per minute 1365TPM trusted platform module 1366TPR task priority register 1367TPS transactions per second 1368TPS transmission parameters signaling 1369TR task register 1370TR token ring 1371TRL timing recovery loop 1372TRNG true random number generator 1373TS terminal services 1374TS time series 1375TS time stamp 1376TS transport stream 1377TSC time stamp counter 1378TSD time stamp disable 1379TSDB time series database 1380TSL test, set, lock 1381TSO time sharing option 1382TSO Total Store Ordering 1383TSP Time-Stamp Protocol 1384TSP Tunnel Setup Protocol 1385TSP time synchronization protocol 1386TSP traveling salesman problem 1387TSS task state segment 1388TTL time to live 1389TTL transistor-transistor logic 1390TTM translation table maps 1391TTY teletype 1392TUI {terminal,text-based,textual} user interface 1393TX {transmit out,transmitter} 1394TZ time zone 1395UAC user {access,account} control 1396UAF use-after-free 1397UART universal asynchronous receiver/transmitter 1398UAT user acceptance testing 1399UB undefined behavior 1400UC uncacheable 1401UCS uniform-cost search 1402UDMA ultra DMA 1403UDO ultra density optical 1404UDP User Datagram Protocol 1405UEFI unified extensible firmware interface 1406UFS Unix File System 1407UGA universal graphics adapter 1408UI unit interval 1409UI user interface 1410UID unique identifier 1411UID user identifier 1412UL upload 1413UMA uniform memory access 1414UMA upper memory area 1415UMB upper memory block 1416UML unified modeling language 1417UMPC ultra-mobile PC 1418UPNP universal plug and play 1419UPS uninterruptible power supply 1420URI uniform resource identifier 1421URL uniform resource locator 1422URN uniform resource name 1423USART universal synchronous/asynchronous receiver/transmitter 1424USB universal serial bus 1425USWC uncacheable speculative write combining 1426UT unit test 1427UTC coordinated universal time 1428UTP unshielded twisted pair 1429UUCP Unix-to-Unix Copy Protocol 1430UUID universally unique identifier 1431UUOC useless use of cat 1432UUT unit under test 1433UX user experience 1434VA vertical alignment 1435VA virtual address 1436VA volt-ampere 1437VAX virtual address extension 1438VB Visual Basic 1439VCA variable-gain amplifier 1440VCC common collector voltage 1441VCF voltage-controlled filter 1442VCM virtual channel memory 1443VCO voltage-controlled oscillator 1444VCS version control system 1445VESA Video Electronics Standards Association 1446VFO variable-frequency oscillator 1447VG volume group 1448VGA Video Graphics Array 1449VHDCI very high density cable interconnect 1450VID {VLAN,voltage level} identifier 1451VIPT virtually indexed, physically tagged 1452VIVT virtually indexed, virtually tagged 1453VLAN virtual local area network 1454VLIW very long instruction word 1455VLSI very large scale integration 1456VLSM variable length subnet mask 1457VM virtual {machine,memory} 1458VME virtual mode extension 1459VMX vector multimedia extensions 1460VMX virtual machine extensions 1461VOD video on demand 1462VPN virtual private network 1463VR virtual reality 1464VRAM video random access memory 1465VRF virtual routing and forwarding 1466VRM voltage regulator module 1467VRRP Virtual Router Redundancy Protocol 1468VSTP VLAN Spanning Tree Protocol 1469VTP VLAN Trunking Protocol 1470W watt 1471W3C World Wide Web Consortium 1472WAMP Web Application Messaging Protocol 1473WAN wide area network 1474WAP Wireless Application Protocol 1475WAP wireless access point 1476WDT watchdog timer 1477WEP Wired Equivalent Privacy 1478WFI wait for interrupt 1479WFQ weighted fair queuing 1480WH write hit 1481WIFI wireless fidelity 1482WLAN wireless local area network 1483WM write miss 1484WMI Windows Management Instrumentation 1485WOL Wake-on-LAN 1486WOM Wake-on-Modem 1487WOR Wake-on-Ring 1488WORM write once read many 1489WP WordPerfect 1490WP word processor 1491WP write protect 1492WPA Wi-Fi Protected Access 1493WPA2 Wi-Fi Protected Access II 1494WPS Wi-Fi Protected Setup 1495WRAM window random access memory 1496WS web services 1497WTC write through caching 1498WWAN wireless wide area network 1499WWW world wide web 1500WYSIWYG what you see is what you get 1501XBAR crossbar 1502XDMCP X Display Manager control protocol 1503XER XML encoding rules 1504XGA Extended Graphics Array 1505XIP execute in place 1506XML Extensible Markup Language 1507XOR exclusive or 1508XP extreme programming 1509XSI X/Open System Interface 1510XSL extensible stylesheet language 1511XSS cross site scripting 1512XT extended technology 1513XUL XML user interface language 1514YACC yet another compiler compiler 1515YANG yet another next generation 1516YAWPFAPR you are welcome; please file a problem report 1517YP Yellow Pages 1518YTD year to date 1519ZBR zone bit recording 1520ZFOD zero-filled on demand 1521ZFS zettabyte file system 1522ZIF zero insertion force 1523ZIFS zero insertion force socket 1524ZMA zone multicast address 1525