1$NetBSD: acronyms.comp,v 1.124 2011/03/26 12:40:07 dholland Exp $ 2 33WHS three-way handshake 4AA anti-aliasing 5AAA authentication, authorization, accounting 6AAT average access time 7ABI application binary interface 8ABR available bit rate 9AC alternating current 10ACID atomicity, consistency, isolation, durability 11ACK acknowledgement 12ACK Amsterdam compiler kit 13ACL access control list 14ACL active current loop 15ACP auxillary control {program, process} 16ACPI advanced configuration and power interface 17ACS access control set 18ACU automatic calling unit 19ADB Apple desktop bus 20ADC analog [to] digital converter 21ADD acronym driven development 22ADP automatic data processing 23ADT abstract data type 24ADO active data objects 25ADP automatic data processing 26ADPCM adaptive differential pulse code modulation 27ADS alternate data stream 28ADSL asymmetric digital subscriber line 29AES Advanced Encryption Standard 30AFS Andrew File System 31AGC automatic gain control 32AGP accelerated graphics port 33AI analog input 34AI artificial intelligence 35AL access list 36AL active link 37ALE address latch enable 38ALU arithmetic and logical unit 39AM access method 40AM amplitude modulation 41AM alignment mask 42AMI alternate mark inversion 43AMT active management technology 44AN Arabic number 45ANSI American National Standards Institute 46AO analog output 47AOL alert on LAN 48AOS add or subtract 49AP access point 50AP application processor 51API application programming interface 52APIC advanced programmable interrupt controller 53ARAT always running APIC timer 54ARC adaptive replacement cache 55ARM Advanced RISC Machines 56ARP address resolution protocol 57ARPA Advanced Research Projects Agency 58ARQ automatic repeat request 59ARR address range register 60ARU audio response unit 61AS autonomous system 62ASC advanced smart cache 63ASCII American standard code for information interchange 64ASD agile software development 65ASE advanced software environment 66ASIC application-specific integrated circuit 67ASK amplitude shif keying 68ASLR address space layout randomization 69ASPM active state power management 70ASN autonomous system number 71ASQ automated software quality 72ASR address space register 73AST abstract syntax tree 74AST asynchronous trap 75AT access time 76AT advanced technology 77ATA advanced technology attachment 78ATAPI advanced technology attachment packet interface 79ATC address translation cache 80ATM asynchronous transfer mode 81ATX advanced technology extended 82AV anti virus 83AVL Adelson-Velsky-Landis 84AVX advanced vector extensions 85AWK Aho, Werner, and Kernighan 86BAL basic assembly language 87BAR base address register 88BBS bulletin board system 89BCC blind carbon copy 90BCD binary coded decimal 91BCR byte counte register 92BCS base configuration space 93BD baud 94BDD binary decision diagram 95BDUF big design up front 96BEDO burst extended data output 97BER basic encoding rules 98BER bit error rate 99BFD binary {file, format} descriptor 100BFKL big fscking kernel lock 101BFS breadth-first search 102BFT binary file transfer 103BGA ball grid array 104BGP border gateway protocol 105BIND Berkeley Internet Name Daemon 106BIOS basic input/output system 107BIST built-in self-test 108BIU bus interface unit 109BKDG BIOS and kernel developer's guide 110BLAS basic linear algebra subprograms 111BLOB binary large object 112BLC back light control 113BM bus master 114BMC baseboard management controller 115BMIC bus master interface controller 116BN boundary neutral 117BNF Backus-Naur form 118BO binary output 119BOF beginning of file 120BOM byte order mark 121BOM beginning of message 122BP base pointer 123BP boot processor 124BPB BIOS parameter block 125BPF Berkeley packet filter 126BPI bits per inch 127BPM business process modelling 128BPS bits per second 129BQS Berkeley quality software 130BSD Berkeley software distribution 131BSF bit scan forward 132BSOD blue screen of death 133BSP binary space partition 134BSP boot strap processor 135BSR bit scan reverse 136BSS block started by symbol 137BT Bluetooth 138BT BitTorrent 139BT bit test 140BTC bit test [and] complement 141BTR bit test [and] reset 142BTS bit test [and] set 143BTS bits per second 144BW bandwidth 145BWM block-write mode 146CA certificate authority 147CAD computer-aided design 148CAM computer assisted manufacturing 149CAM content addressable memory 150CARP common address redundancy protocol 151CAS (atomic) compare and swap 152CAS computer algebra system 153CAS column address strobe 154CASE computer aided software engineering 155CAU control access unit 156CAV constant angular velocity (as opposed to CLV) 157CBC cipher block chaining 158CBR constant bit rate 159CCD charge coupled device 160CC carbon coby 161CD compact disc 162CD cache disable 163CDDA compact disc digital audio 164CDRAM cache dynamic random access memory 165CER canonical encoding rules 166CF compact flash 167CFG context-free grammar 168CFG control-flow graph 169CG control gate 170CGA color graphics {array,adapter} 171CGI common gateway interface 172CHAP challenge-handshake authentication protocol 173CHS cylinder/head/sector 174CI {common, component} interface 175CIDR classless inter-domain routing 176CIFS common internet file system 177CIL common intermediate language 178CIS contact image sensor 179CJK Chinese, Japanese, and Korean 180CLF common log format 181CLI command line interface 182CLR common language runtime 183CLTT closed loop thermal throttling 184CLUT color look-up table 185CLV constant linear velocity (as opposed to CAV) 186CM configuration management 187CMA concert multithread architecture 188CMI control management interface 189CMI control method interface 190CMOS complementary metal-oxide-semiconductor 191CMP chip multi-processing 192CMS content management system 193CMYK cyan magenta yellow black 194CN {common, canonical} name 195CNC computer numerical control 196COF current operating frequency 197COFF common object file format 198COMA cache-only memory architecture 199COW copy-on-write 200CPB core performance boost 201CPG clock pulse generator 202CPL current privilege level 203CPS characters per second 204CPT command pass through 205CPU central processing unit 206CR carriage return 207CRC cyclic redundancy check 208CRLF carriage return line feed 209CRT cathode ray tube 210CS computer science 211CS cable select 212CS chip select 213CS code segment 214CSI common system interface 215CSMA carrier sense multiple access 216CSMA/CA carrier sense multiple access with collision avoidance 217CSMA/CD carrier sense multiple access with collision detection 218CSS cascading style sheets 219CSV comma-separated values 220CTM close to metal 221CTS clear to send 222CUA common user access 223CUT coordinated universal time 224CV control voltage 225CVS concurrent versions system 226DA destination address 227DAA distributed application architecture 228DAC discretionary access control 229DAC digital [to] analog converter 230DAO disk at once 231DAP directory access protocol 232DAT digital audio tape 233DAT dynamic acceleration technology 234DB database 235DBMS database management system 236DBS database server 237DC direct current 238DCC direct client [to] client 239DCC direct cable connect 240DCD data carrier detect 241DCE data control equipment 242DCE distributed computing environment 243DCS data collection systems 244DCT discrete cosine transform 245DCU data cache unit 246DDC display data channel 247DDE dynamic data exchange 248DDK device driver kit 249DDL data description language 250DDR double data rate 251DDS direct digital sound 252DDWG digital display working group 253DE desktop environment 254DE debugging extensions 255DEA data encryption algorithm 256DEK data encryption key 257DEP data execution prevention 258DER distinguished encoding rules 259DES Data Encryption Standard 260DF don't fragment 261DFA deterministic finite automaton 262DFC data flow control 263DFS depth first search 264DFS distributed file system 265DFT discrete Fourier transform 266DFT diagnostic function test 267DGL data generation language 268DH Diffie-Hellman 269DHCP dynamic host configuration protocol 270DIFS distributed inter-frame space 271DIMM dual inline memory module 272DIRT design in real time 273DL download 274DL diode logic 275DLE data link escape 276DLL dynamic link library 277DMA direct memory access 278DMI desktop management interface 279DMS document management system 280DNARD Digital network appliance reference design 281DNS domain name system 282DOE distributed object environment 283DOF data over fibre 284DOM document object model 285DOS denial of service 286DOS disk operating system 287DPC deferred procedure call 288DPCM differential pulse code modulation 289DPD dead peer detection 290DPI dots per inch 291DPI deep packet inspection 292DPL descriptor privilege level 293DPST display power savings technology 294DRAM dynamic random access memory 295DRI direct rendering infrastructure 296DRM digital rights management 297DRRS display refresh rate switching 298DS debug store 299DSB double-sideband modulation 300DSDT differentiated system descriptor table 301DSL digital subscriber line 302DSL domain specific language 303DSLAM digital subscriber line access multiplexer 304DSN delivery status notification 305DSO dynamic shared object 306DSP digital signal processor 307DSSS direct sequence spread spectrum 308DTD document type definition 309DTE data terminal equipment 310DTE dumb terminal emulator 311DTL diode-transistor logic 312DTS digital thermal sensor 313DVB digital video broadcasting 314DVCS distributed version control system 315DVD digital versatile disc 316DVFS dynamic voltage and frequency scaling 317DVR digital video recorder 318DVI digital visual interface 319E-XER extended XML encoding rules 320EAP extensible authentication protocol 321EBR extended boot record 322ECC error correction code 323ECL emitter-coupled logic 324ECN explicit congestion notification 325ECP enhanced capability port 326ECS enhanced chip set 327ECS extended configuration space 328EDAT enhanced dynamic acceleration technology 329EDID extended display identification data 330EDO extended data out 331EDS electronical data sheet 332EEPROM electrically erasable programmable read only memory 333EFI extensible firmware interface 334EFL emitter follower logic 335EFM eight to fourteen modulation 336EGA enhanced graphics {array,adapter} 337EGP exterior gateway protocol 338EH extension header 339EIDE enchanced IDE 340EISA extended industry standard architecture 341ELF executable and linking format 342ELS entry level system 343EMI electro-magnetic interference 344EMP electro-magnetic pulse 345EMR electro-magnetic radiation 346EOF end of file 347EOL end of line 348EOL end of life 349EOT end of transmission 350EPIC explicitly parallel instruction computing 351EPP enhanced parallel port 352EPRML extended partial response, maximum likelihood 353EPROM erasable programmable read only memory 354ERD emergency recovery disk 355ESDRAM enhanced synchronous dynamic random access memory 356ESS electronic switching system 357EST enhanced speedstep 358ETL extract, transform, load 359EU execution unit 360EULA end user license agreement 361FAT file allocation table 362FBRAM frame buffer random access memory 363FCL fiber channel loop 364FCS frame check sequence 365FDC floppy disk controller 366FDD floppy disk drive 367FDDI fiber distributed data interface 368FDE full disk encryption 369FEA finite element analysis 370FEC forward error correction 371FET field-effect transistor 372FFH functional fixed hardware 373FFI foreign function interface 374FFS fast file system 375FFS find first set 376FFT fast Fourier transform 377FG floating gate 378FHSS frequency hop spread spectrum 379FID frequency identifier 380FIFO first in, first out 381FILO first in, last out 382FIR fast infrared 383FLOPS floating [point] operations per second 384FLOSS free / libre / open source software 385FM frequency modulation 386FMR false match rate 387FOSS free / open source software 388FPGA field programmable gate array 389FPM fast page mode 390FPR floating point register 391FPU floating point unit 392FQDN fully qualified domain name 393FRR false rejection rate 394FRU field replaceable unit 395FS file system 396FSB front side bus 397FSCK file system check 398FSK frequency shift keying 399FSM finite-state machine 400FTA fault tree analysis 401FTP file transfer protocol 402FTPS file transfer protocol, secure 403FUS fast user switching 404FWH firmware hub 405FWS folding white space 406GAS generic address structure 407GC garbage collector 408GCR group-coded recording 409GDT global descriptor table 410GEM graphics execution manager 411GEM graphics environment manager 412GID group identifier 413GIF graphics interchange format 414GMCH graphics and memory controller hub 415GNU GNU's not Unix 416GOT global offset table 417GPE general purpose event 418GPF general protection fault 419GPL GNU/general public license 420GPR general purpose register 421GPT GUID partition table 422GPU graphics processing unit 423GR golden ratio 424GRE generic routing encapsulation 425GSI global system interrupt 426GUI graphics user interface 427GUID globally unique identifier 428HA high availability 429HAL hardware abstraction layer 430HAT hashed array tree 431HBA host bus adapter 432HCI host controller interface 433HCI human-computer interaction 434HCL hardware compatibility list 435HCF halt and catch fire 436HDD hard disk drive 437HDCP high-bandwidth digital content protection 438HF high frequency 439HFM highest frequency mode 440HID human interface device 441HLL high-level language 442HMA high memory area 443HMI human-machine interface 444HP Hewlett-Packard 445HOOD hierarchical object oriented design 446HPC high performance computing 447HPET high precision event timer 448HT hyper-threading 449HTC hardware thermal control 450HTCC high temperature co-fired ceramic 451HTML hyper-text markup language 452HTT hyper-threading technology 453HTTP hyper-text transfer protocol 454HTTPS hyper-text transfer protocol, secure 455HVM hardware virtual machine 456HZ Hertz 457I2O intelligent input/output 458IA information assurance 459IANA Internet assigned number authority 460IBC iterated block cipher 461IBM International Business Machines 462IBS instruction based sampling 463ICA independent computer architecture 464IC integrated circuit 465ICB Internet citizen's band 466ICE in-circuit emulator 467ICH I/O controller hub 468ICE internal compiler error 469ICE in-circuit emulator 470ICMP Internet control message protocol 471IDA Intel dynamic acceleration 472IDE integrated drive electronics 473IDE integrated development environment 474IDPS intrusion detection [and] prevention system 475IDRP inter-domain routing protocol 476IDS intrusion detection system 477IDT interrupt descriptor table 478IE Internet Explorer 479IEC international electrotechnical commission 480IEEE Institute [of] Electrical [and] Electronics Engineers 481IESG Internet Engineering Steering Group 482IETF Internet Engineering Task Force 483IFCM isochronous flow control mode 484IGMP Internet group management protocol 485IGP interior gateway protocol 486IHV independent hardware vendor 487IKE Internet key exchange 488ILM internal loopback mode 489ILP instruction level parallelism 490IM instant messaging 491IMC integrated memory controller 492IMCR interrupt mode configuration register 493IMAP Internet mail access protocol 494IMS information management system 495INCITS international committee on information technology standards 496IO input/output 497IOCTL input/output control 498IOMMU input/output memory management unit 499IP Internet Protocol 500IP intellectual property 501IPC interprocess communication 502IPE integrated programming environment 503IPI interprocessor interrupt 504IPNG Internet protocol, next generation 505IPS intrusion prevention system 506IPS in-plane switching 507IPSEC Internet protocol security 508IRC Internet relay chat 509IRDA infrared data association 510IRQ interrupt request 511IRQL interrupt request level 512IRTF Internet research task force 513IS information system 514ISA industry standard architecture 515ISA instruction set architecture 516ISDN integrated services digital network 517ISI inter-symbol interference 518ISM industrial, scientific and medical 519ISN initial serial number 520ISO international standards organization 521ISOC Internet society 522ISP Internet service provider 523ISR interrupt service routine 524IST interrupt stack table 525ISV independent software vendor 526ITB Intel turbo boost 527IV initialization vector 528IVT interrupt vector table 529JBOD just a bunch of disks 530JFET junction [gate] field-effect transistor 531JIT just in time 532JPEG joint photographic experts group 533JRE Java runtime environment 534JTAG joint test action group 535KB keyboard 536KB kilobyte 537KBD keyboard 538KBD kilobaud 539KLOC thousand lines of code 540KMS kernel-mode setting 541KPI kernel programming interface 542KVA kernel virtual address 543KVM kernel virtual memory 544KVM keyboard, video, mouse switch 545LAMP Linux Apache MySQL {Perl,PHP,Python} 546LAN local area network 547LAPIC local advanced programmable interrupt controller 548LAR load access rights 549LBA logical block addressing 550LBS location-based service 551LCD liquid crystal display 552LCP link control protocol 553LDA local delivery agent 554LDAP lightweight directory access protocol 555LDR light-dependent resistor 556LDT local descriptor table 557LE logical extent 558LED light emitting diode 559LER label edge router 560LF line feed 561LF low frequency 562LFM lowest frequency mode 563LFN long file names 564LFO low-frequency oscillation 565LFS log-structured file system 566LFU least frequently used 567LIFO last in, first out 568LILO last in, last out 569LILO Linux loader 570LINT local interrupt 571LIR local Internet registry 572LKM {Linux, loadable} kernel module 573LKML Linux kernel mailing list 574LL load linked 575LL/SC load linked / store conditional 576LLC logical link control 577LLF low level format 578LLMNR link-local multicast name resolution 579LLVM Low Level Virtual Machine 580LM long mode 581LMM link management mode 582LNO loop nest optimization 583LOC lines of code 584LPC low pin count 585LPS local positioning system 586LRC longitudinal redundancy check 587LRM left-to-right mark 588LRO left-to-right override 589LRU least recently used 590LSB least significant bit [or: byte] 591LSB Linux standards base 592LSI large scale integration 593LSL load segment limit 594LSR label switch router 595LTCC low temperature co-fired ceramic 596LTR left to right 597LTR load task register 598LUN logical unit number 599LV logical volume 600LVM logical volume management 601LVT local vector table 602LWP light-weight process 603LZW Lempel Ziv Welch 604MAC medium access control 605MAC mandatory access control 606MADT multiple APIC descriptor table 607MB megabyte 608MBR master boot record 609MBS megabits per second 610MC memory controller 611MCA machine check architecture 612MCC multiversion concurrency control 613MCE machine check exception 614MCGA multicolor graphics adapter 615MCH memory controller hub 616MCM multi-chip module 617MCQ memory controlled queue 618MD machine-dependent 619MDA mail delivery agent 620MDA monochrome display adapter 621MDRAM multibank dynamic random access memory 622MESI modified, exclusive, shared, invalid 623MFC merge from current 624MFM modified frequency modulation 625MI machine-independent 626MIB management information base 627MID mobile internet device 628MIDI musical instrument digital interface 629MIF management information format 630MIMD multiple instruction stream, multiple data stream 631MIME multipurpose Internet mail extensions 632MIMO multiple input multiple output 633MIPS million instructions per second 634MISD multiple instruction, single data 635MIT Massachusetts Institute of Technology 636ML mailing list 637ML machine language 638ML machine learning 639ML markup language 640ML maximum likelihood 641MLC multi-level cell 642MMIC monolithic microwave integrated circuit 643MMIO memory mapped input/output 644MMU memory management unit 645MMX multimedia extension 646MMX multiple math extension 647MMX matrix math extension 648MO magneto-optical 649MOESI modified, owned, exclusive, shared, invalid 650MOF maximum operating frequency 651MOSFET metal-oxide-semiconductor field-effect transistor 652MOSI modified, owned, shared, invalid 653MP multiprocessor 654MP multiprocessing 655MP multi-platform 656MP multiplayer 657MPEG moving picture experts group 658MPI message passing interface 659MPLS multiprotocol label switching 660MPP massively parallel processor 661MPS multiprocessor specification 662MPS memory pool system 663MR modem ready 664MRU most recently used 665MS Microsoft 666MSB most significant bit [or: byte] 667MSE mean square error 668MSF minutes seconds frames 669MSI message signaled interrupt 670MSI modified, shared, invalid 671MSR machine state register 672MSS maximum segment size 673MT machine translation 674MTA mail transfer agent 675MTBF mean time between failures 676MTRR memory type range register 677MTTF mean time to failure 678MTU maximum transmission unit 679MUA mail user agent 680MUD multi-user domain 681MVCC multiversion concurrency control 682MWE module width encoding 683MX mail exchange 684NACK negative acknowledgement 685NAN not a number 686NAS network attached storage 687NAT network address translation 688NAV network allocation vector 689NC numerical control 690NCO numerically-controlled oscillator 691NCP network control protocol 692NCQ native command queuing 693ND neighbor discovery 694NE numeric error 695NFA nondeterministic finite automaton 696NFS network file system 697NIA next instruction address 698NIC network interface card 699NIP network interface protocol 700NIS network information service 701NLS native language support 702NMI non-maskable interrupt 703NNTP network news transfer protocol 704NOP no operation 705NP nondeterministic polynomial time 706NRZ non-return to zero 707NSA National Security Agency 708NTM non-deterministic Turing machine 709NTP network time protocol 710NUMA non-uniform memory access 711NVRAM non-volatile random access memory 712NW not write-through 713NX no execute 714OAEP optimal asymmetric encryption padding 715OBO off by one 716OBOE off by one error 717OCL object constraint language 718OCR optical character recognition 719ODCM on-demand clock modulation 720ODT on-die termination 721OEM original equipment manufacturer 722OFDM orthogonal frequency division multiplexing 723OFET organic field-effect transistor 724ONFI open nand flash interface 725OO object oriented 726OO OpenOffice 727OOB out of band 728OOE out of order execution 729OOM out of memory 730OOP object oriented programming 731OOSE object oriented software engineering 732OPS operations per second 733OPM operations per minute 734OQL object query language 735ORM object-relational mapping 736OS operating system 737OSD open source definition 738OSF open software foundation 739OSI open systems interconnection 740OSI open-source initiative 741OSPF open shortest path first 742OSPM OS power management 743OSS open source software 744OSS open sound system 745OSVW operating system visible workarounds 746OTP one time password 747OU organizational unit 748OUI organizationally unique identifier 749OWL Web ontology language 750P2P peer to peer 751P2P PCI to PCI 752PA physical address 753PA phase accumulator 754PAC phase-amplitude converter 755PAE physical address extension 756PAM pluggable authentication modules 757PAM pulse amplitude modulation 758PAP password authentication protocol 759PAT page attribute table 760PAT port address translation 761PATA parallel ATA 762PAX portable archive exchange 763PBE pending break encoding 764PBE programming by example 765PC personal computer 766PCB printed circuit board 767PCC Portable C Compiler 768PCD page-level cache disable 769PCE performance-monitor counter enable 770PCI peripheral component interconnect 771PCM phase change memory 772PCM pulse code modulation 773PCMCIA personal computer memory card international association 774PD public domain 775PDA personal digital assistant 776PDA pushdown automaton 777PDAG propositional directed acyclic graph 778PDB power distribution board 779PDF portable document format 780PDM pulse-duration modulation 781PDN pull-down network 782PDP page descriptor page 783PDS product data sheet 784PDU protocol data unit 785PE protection enable 786PEP protocol extension protocol 787PER packed encoding rules 788PERL practical extraction [and] report language 789PFS perfect forward secrecy 790PGAS partitioned global address space 791PGE page global enable 792PGP pretty good privacy 793PHB PCI host bridge 794PIC programmable interrupt controller 795PIC position independent code 796PID process id 797PIE position independent executable 798PIM personal information manager 799PIM platform-independent model 800PIN personal identification number 801PIO programmed input/output 802PIPT physically indexed, physically tagged 803PIV personal identity verification 804PKI public key infrastructure 805PKCS public-key cryptography standards 806PLC programmable logic controller 807PLL phase locked loop 808PLRU pseudo LRU 809PLTM package level thermal management 810PM power management 811PM pulse modulation 812PME power management event 813PMI platform management interrupt 814PMIO port-mapped input/output 815PMT photo-multiplier tube 816PMU power management unit 817PNG portable network graphics 818PNP plug and play 819POE power over ethernet 820POF probability of failure 821POP post office protocol 822POP power on password 823POSIX portable operating system interface [for] Unix 824POST power on self test 825POTS plain old telephone system 826PP pair programming 827PPC PowerPC 828PPB PCI [to] PCI bridge 829PPI pixels per inch 830PPM pages per minute 831PPP point-to-point protocol 832PPPOA point-to-point protocol over ATM 833PPPOE point-to-point protocol over ethernet 834PPU physics processing unit 835PRBS pseudo-random bit sequence 836PRML partial response, maximum likelihood 837PRNG pseudo random number generator 838PROM programmable read only memory 839PSD power spectral density 840PSE page size extensions 841PSK pre-shared key 842PSK phase shift keying 843PSTN public switched telephone network 844PSW program status word 845PTE page table entry 846PTLA pseudo top level aggregator 847PTP page table page 848PTV perceived target value 849PU processing unit 850PUN physical unit number 851PV physical volume 852PVG physical volume group 853PVI protected-mode virtual interrupt 854PWM pulse width modulation 855PXE preboot execution environment 856QA quality assurance 857QAM quality assurance management 858QAM quadrature amplitude modulation 859QBE query by example 860QC quality control 861QDI quasi delay insensitive 862QOS quality of service 863RA receiver address 864RA remote assistance 865RA router advertisement 866RAD rapid application development 867RAID redundant array of inexpensive disks 868RAM random access memory 869RAS restartable atomic sequence 870RAS remote access service 871RAS row address strobe 872RBF radial basis function 873RBT red-black tree 874RC release candidate 875RC remote control 876RCS revision control system 877RCU read, copy, update 878RDF resource description format 879RDM relational data model 880RDMA remote direct memory access 881REST representational state transfer 882RF radio frequency 883RFI radio frequency interference 884RFO request for ownership 885RGB red green blue 886RH read hit 887RHL Red Hat Linux 888RIB routing information base 889RIFF Resource Interchange File Format 890RIP routing information protocol 891RIR regional Internet registry 892RISC reduced instruction set computing 893RKM ROM Kernel Manual 894RLE run length encoding 895RLL run length limited 896RLO right-to-left override 897RM read miss 898RMPM rapid memory power management 899RMS root mean square 900RMW read, modify, write 901RNG random number generator 902ROM read only memory 903RPC remote procedure call 904RPL requested privilege level 905RPM revolutions per minute 906RR random replacement 907RS relay station 908RSA Rivest, Shamir and Adleman 909RSS really simple syndication 910RSS residual sum of squares 911RT real time 912RTC real time clock 913RTC real time computing 914RTF rich text format 915RTL resistor-transistor logic 916RTOS real time operating system 917RTS {ready, request} to send 918RTT round time trip 919RUP rational unified process 920RWM read-write memory 921RX receive, receiver 922S/PDIF Sony/Phillips digital interface 923SA security advisory 924SA security association 925SA source address 926SA structured analysis 927SAAS software as a service 928SACD super audio compact disc 929SAD security association database 930SAM serial access memory 931SAM sum addressed memory 932SAN storage area network 933SAPIC streamlined advanced programmable interrupt controller 934SASD structured analysis, structured design 935SASI shugart associates system interface (predecessor to SCSI) 936SATA serial advanced technology attachment 937SB sound blaster 938SBU standard build unit 939SC store conditional 940SCA source code analyzer 941SCADA supervisory control and data acquisition 942SCC single chip cloud 943SCC source code control 944SCCS source code control system 945SCM software configuration management 946SCM source code management 947SCP secure copy 948SCI system control interrupt 949SCI scalable coherent interface 950SCSI small computer system interface 951SCTP stream control transmission protocol 952SDK software development kit 953SDL simple declarative language 954SDRAM synchronous dynamic random access memory 955SDT syntax-directed translation 956SEGV segmentation violation 957SFI simple firmware interface 958SFC sequential function chart 959SGRAM synchronous graphics random access memory 960SIFS short inter-frame space 961SIMD single instruction, multiple data 962SIMM single inline memory module 963SIP session initiation protocol 964SIR slow infrared 965SISD single instruction, single data 966SLC single-level cell 967SLDRAM synchronous-link dynamic random access memory 968SLI scalable link interface 969SLI scan-line interleave 970SLOC source lines of code 971SLRU segmented LRU 972SMA smart memory access 973SMAF system management action field 974SMART self-monitoring analysis and reporting technology 975SMBIOS system management BIOS 976SMC system management controller 977SMI system management interrupt 978SMI structure of management information 979SMM system management mode 980SMP symmetric multiprocessing 981SMT simultaneous multithreading 982SMTP simple mail transfer protocol 983SMU system management unit 984SNMP simple network management protocol 985SNR signal [to] noise ratio 986SOA service oriented architecture 987SOAP simple object access protocol 988SOC system on chip 989SOHO small office / home office 990SOL serial over LAN 991SP stack pointer 992SP service pack 993SPARC scalable processor architecture 994SPARQL SPARQL protocol and RDF query language 995SPD security policy database 996SPD serial presence detect 997SPI serial peripheral interface 998SPI stateful packet inspection 999SPMD single process, multiple data 1000SPR special purpose register 1001SPT sectors per track 1002SQA software quality assurance 1003SQL structured query language 1004SRAM static random access memory 1005SRC sample rate conversion 1006SS stack segment 1007SS self-snoop 1008SSB single-sideband modulation 1009SSD solid state drive 1010SSE streaming SIMD extensions 1011SSFDC solid state floppy disc card 1012SSH secure shell 1013SSI server side includes 1014SSL secure sockets layer 1015SSP stack smashing protection 1016STC software thermal control 1017STD state transition diagram 1018STP shielded twisted pair 1019STP spanning-tree protocol 1020SUS Single Unix Specification 1021SVG scalable vector graphics 1022SVGA super video graphics {array,adapter} 1023SVM secure virtual machine 1024SVM support vector machine 1025SWF Shockwave Flash 1026TA transmitter address 1027TA test assertion 1028TAI international atomic time 1029TAO track at once 1030TAOCP The Art of Computer Programming 1031TAS test and set 1032TB terabyte 1033TCB trace capture buffer 1034TCB trusted computing base 1035TCC thermal control circuit 1036TCL tool command language 1037TCP transmission control protocol 1038TCQ tagged command queueing 1039TDC time [to] digital converter 1040TDD test driven development 1041TDM time division multiplexing 1042TDOA time difference of arrival 1043TDP thermal design {point, power} 1044TECO Text Editor and Corrector 1045TFT thin film transistor 1046TFTP trivial file transfer protocol 1047TIAS try it and see 1048TIFF tagged image file format 1049TITS try it to see 1050TK temporal key 1051TLA top level aggregator 1052TLB transition lookaside buffer 1053TLD top level domain 1054TLS transport layer security 1055TLS thread local storage 1056TM Turing machine 1057TM thermal monitor 1058TMDS transition minimized differential signaling 1059TMO timeout 1060TOD time of day 1061TOS terms of service 1062TOS type of service 1063TOS trusted operating system 1064TP transaction processing 1065TPM trusted platform module 1066TPM transactions per minute 1067TPR task priority register 1068TR token ring 1069TR task register 1070TRNG true random number generator 1071TS time stamp 1072TS time series 1073TS terminal services 1074TSC time stamp counter 1075TSD time stamp disable 1076TSL test, set, lock 1077TSO time sharing option 1078TSP time stamp protocol 1079TSP tunnel setup protocol 1080TSP traveling salesman problem 1081TSS task state segment 1082TTL time to live 1083TTL transistor-transistor logic 1084TTM translation table maps 1085TTY teletype 1086TX transmit out, transmitter 1087TZ time zone 1088UAC user {account, access} control 1089UART universal asynchronous receiver/transmitter 1090UC uncacheable 1091UCS uniform-cost search 1092UDMA ultra DMA 1093UDO ultra density optical (storage) 1094UDP user datagram protocol 1095UFS Unix file system 1096UI user interface 1097UI unit interval 1098UID user identifier 1099UID unique identifier 1100UL upload 1101UMA uniform memory access 1102UMA upper memory area 1103UMB upper memory block 1104UMPC ultra-mobile PC 1105UML unified modeling language 1106UPS uninterruptible power supply 1107URI uniform resource identifier 1108URL uniform resource locator 1109URN uniform resource name 1110USART universal synchronous/asynchronous receiver/transmitter 1111USB universal serial bus 1112USWC uncacheable speculative write combining 1113UT unit test 1114UTC coordinated universal time 1115UTP unshielded twisted pair 1116UUCP Unix-to-Unix copy protocol 1117UUID universally unique identifier 1118UUOC useless use of cat 1119VA volt-ampere 1120VA virtual address 1121VA vertical alignment 1122VAX virtual address extension 1123VB Visual Basic 1124VCA variable-gain amplifier 1125VCC common collector voltage 1126VCF voltage-controlled filter 1127VCM virtual channel memory 1128VCO voltage-controlled oscillator 1129VCS version control system 1130VESA video electronics standards association 1131VFO variable-frequency oscillator 1132VG volume group 1133VGA video graphics {array,adapter} 1134VHDCI very high density cable interconnect 1135VID voltage level identifier 1136VIPT virtually indexed, physically tagged 1137VIVT virtually indexed, virtually tagged 1138VLAN virtual local area network 1139VLIW very long instruction word 1140VLSI very large scale integration 1141VLSM variable length subnet mask 1142VOD video on demand 1143VM virtual {machine,memory} 1144VME virtual mode extension 1145VMX virtual machine extensions 1146VMX vector multimedia extensions 1147VPN virtual private network 1148VR virtual reality 1149VRAM video random access memory 1150VRM voltage regulator module 1151VRRP virtual router redundancy protocol 1152W Watt 1153W3C World Wide Web Consortium 1154WAN wide area network 1155WAP wireless application protocol 1156WEP wired equivalent privacy 1157WFI wait for interrupt 1158WH write hit 1159WIFI wireless fidelity 1160WLAN wireless local area network 1161WDT watchdog timer 1162WM write miss 1163WOL wake on LAN 1164WOR wake on ring 1165WORM write once read many 1166WP write protect 1167WP word processor 1168WP WordPerfect 1169WPA wi-fi protected access 1170WRAM window random access memory 1171WS web services 1172WTC write through caching 1173WWAN wireless wide area network 1174WWW world wide web 1175WYSIWYG what you see is what you get 1176XBAR crossbar 1177XER XML encoding rules 1178XGA extended graphics {array,adapter} 1179XIP execute in place 1180XML extensible markup language 1181XOR exclusive or 1182XP extreme programming 1183XSL extensible stylesheet language 1184XSS cross site scripting 1185XT extended technology 1186XUL XML user interface language 1187YACC yet another compiler compiler 1188YAWPFAPR you are welcome; please file a problem report 1189YP yellow pages (aka NIS) 1190YTD year to date 1191ZBR zone bit recording 1192ZFOD zero-filled on demand 1193ZIF zero insertion force 1194ZIFS zero insertion force socket 1195ZMA zone multicast address 1196