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acronyms.comp
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$NetBSD: acronyms.comp,v 1.149 2015/04/13 00:39:57 rodent Exp $
3WHS three-way handshake
8VSB 8-state vestigial side band modulation
AA anti-aliasing
AAA authentication, authorization, [and] accounting
AAT average access time
ABI application binary interface
ABR available bit rate
AC alternating current
ACI adjacent channel interferer
ACID atomicity, consistency, isolation, durability
ACK Amsterdam compiler kit
ACK acknowledgement
ACL access control list
ACL active current loop
ACP auxillary control {process,program}
ACPI advanced configuration and power interface
ACS access control set
ACU automatic calling unit
ADB Apple desktop bus
ADC analog [to] digital converter
ADD acronym driven development
ADO active data objects
ADP automatic data processing
ADPCM adaptive differential pulse code modulation
ADS alternate data stream
ADSL asymmetric digital subscriber line
ADT abstract data type
AES Advanced Encryption Standard
AFS Andrew File System
AGC automatic gain control
AGP accelerated graphics port
AI analog input
AI artificial intelligence
AL access list
AL active link
ALE address latch enable
ALS ambient light sensor
ALU arithmetic and logical unit
AM access method
AM alignment mask
AM amplitude modulation
AMI alternate mark inversion
AMQP advanced message queuing protocol
AMT active management technology
AN Arabic number
ANSI American National Standards Institute
AO analog output
AOL Alert-on-LAN
AOS add or subtract
AP access point
AP application processor
API application programming interface
APIC advanced programmable interrupt controller
APIPA automatic private IP addressing
APT advanced persistent threat
AQM active queue management
ARAT always running APIC timer
ARC adaptive replacement cache
ARM Advanced RISC Machines
ARP Address Resolution Protocol
ARPA Advanced Research Projects Agency
ARQ automatic repeat request
ARR address range register
ARU audio response unit
AS autonomous system
ASC advanced smart cache
ASCII American Standard Code for Information Interchange
ASD agile software development
ASE advanced software environment
ASIC application-specific integrated circuit
ASK amplitude shif keying
ASLR address space layout randomization
ASN autonomous system number
ASPM active state power management
ASQ automated software quality
ASR address space register
AST abstract syntax tree
AST asynchronous trap
AT access time
AT advanced technology
ATA advanced technology attachment
ATAPI advanced technology attachment packet interface
ATC address translation cache
ATM asynchronous transfer mode
ATX advanced technology extended
AV anti virus
AVL Adelson-Velsky-Landis
AVX advanced vector extensions
BA byte align
BAL basic assembly language
BAR base address register
BBS bulletin board system
BCC blind carbon copy
BCD binary coded decimal
BCR byte count register
BCS base configuration space
BD baud
BDD binary decision diagram
BDI bit deinterleave
BDUF big design up front
BEDO burst extended data output
BER basic encoding rules
BER bit error {rate,ratio}
BFD binary {file,format} descriptor
BFKL big fscking kernel lock
BFS breadth-first search
BFT binary file transfer
BGA ball grid array
BGP Border Gateway Protocol
BIND Berkeley Internet Name Daemon
BIOS Basic Input/Output System
BIOS built-in operating system
BIST built-in self-test
BIU bus interface unit
BKDG BIOS and kernel developer's guide
BLAS basic linear algebra subprograms
BLC back light control
BLOB binary large object
BM bus master
BMC baseboard management controller
BMIC bus master interface controller
BN boundary neutral
BNF Backus-Naur form
BO binary output
BOF beginning of file
BOM beginning of message
BOM byte order mark
BP base pointer
BP boot processor
BPB BIOS parameter block
BPF Berkeley Packet Filter
BPI bits per inch
BPM business process modelling
BPS bits per second
BPSK binary phase shift keying
BQS Berkeley quality software
BRE basic regular expression
BS backspace
BS binary sequence
BSA basic service area
BSD Berkeley Software Distribution
BSF bit scan forward
BSOD blue screen of death
BSP binary space partition
BSP bootstrap processor
BSR bit scan reverse
BSS basic service set
BSS block started by symbol
BSSID basic service set identifier
BT BitTorrent
BT Bluetooth
BT bit test
BTC bit test [and] complement
BTR bit test [and] reset
BTS bit test [and] set
BTS bits per second
BW bandwidth
BWM block-write mode
CA certificate authority
CAD computer-aided design
CAM computer assisted manufacturing
CAM conditional access module
CAM content addressable memory
CARP Common Address Redundancy Protocol
CAS column address strobe
CAS compare and swap
CAS computer algebra system
CASE computer aided software engineering
CAU control access unit
CAV constant angular velocity
CBC cipher block chaining
CBR constant bit rate
CC carbon coby
CCD charge coupled device
CCI co-channel interferer
CD cache disable
CD compact disc
CDDA compact disc digital audio
CDMA code division multiple access
CDRAM cache dynamic random access memory
CER canonical encoding rules
CF compact flash
CFG context-free grammar
CFG control-flow graph
CG control gate
CGA Color Graphics Adapter
CGI common gateway interface
CGN Carrier-Grade NAT
CHAP Challenge-Handshake Authentication Protocol
CHS cylinder/head/sector
CI continuous integration
CI {common,component} interface
CIDR Classless Inter-Domain Routing
CIFS Common Internet File System
CIL common intermediate language
CIR carrier-to-interference ratio
CIS contact image sensor
CISC complex instruction set {computer,computing}
CJK Chinese, Japanese, [and] Korean
CLF common log format
CLI command line interface
CLR common language runtime
CLTT closed loop thermal throttling
CLUT color look-up table
CLV constant linear velocity
CM configuration management
CMA concert multithread architecture
CMI control management interface
CMI control method interface
CMOS complementary metal-oxide-semiconductor
CMP chip multi-processing
CMS content management system
CMYK cyan magenta yellow black
CN {common,canonical} name
CNC computer numerical control
CNR carrier-to-noise ratio
COF current operating frequency
COFDM coded orthogonal frequency division multiplexing
COFF common object file format
COM component object model
COMA cache-only memory architecture
CORBA common object request broker architecture
COW copy-on-write
CP continuous pilot
CPB core performance boost
CPE common phase error
CPG clock pulse generator
CPL current privilege level
CPLD complex programmable logic device
CPP C preprocessor
CPS characters per second
CPT command pass through
CPU central processing unit
CR carriage return
CRC cyclic redundancy check
CRL carrier recovery loop
CRLF carriage return line feed
CRT cathode ray tube
CS cable select
CS chip select
CS code segment
CS computer science
CSI channel state information
CSI common system interface
CSMA carrier sense multiple access
CSMA/CA carrier sense multiple access with collision avoidance
CSMA/CD carrier sense multiple access with collision detection
CSR control [and] status registers
CSRG Computer Systems Research Group
CSS cascading style sheets
CSV comma-separated values
CTM close to metal
CTS clear to send
CUA common user access
CUT coordinated universal time
CV control voltage
CVS Concurrent Versions System
DA destination address
DAA distributed application architecture
DAB digital audio broadcasting
DAC digital [to] analog converter
DAC discretionary access control
DAD duplicate address detection
DAO disk at once
DAP Directory Access Protocol
DAT digital audio tape
DAT dynamic acceleration technology
DB database
DBA database administrator
DBA dynamic bandwidth allocation
DBB data bus buffer
DBC design by contract
DBL dynamic buffer limiting
DBMS database management system
DBS database server
DC direct current
DCC Direct Client-to-Client
DCC direct cable connect
DCD data carrier detect
DCE data control equipment
DCE distributed computing environment
DCOM distributed component object model
DCOP Desktop COmmunication Protocol
DCS data collection systems
DCT discrete cosine transform
DCU data cache unit
DDC display data channel
DDE dynamic data exchange
DDK device driver kit
DDL data description language
DDR double data rate
DDS direct digital sound
DDWG Digital Display Working Group
DE debugging extensions
DE desktop environment
DEA data encryption algorithm
DEK data encryption key
DEP data execution prevention
DER distinguished encoding rules
DES Data Encryption Standard
DF don't fragment
DFA deterministic finite automaton
DFC data flow control
DFS depth first search
DFS distributed file system
DFT diagnostic function test
DFT discrete Fourier transform
DGL data generation language
DH Diffie-Hellman
DHCP Dynamic Host Configuration Protocol
DIFS distributed inter-frame space
DIMM dual inline memory module
DIRT design in real time
DL diode logic
DL discrete logarithm
DL download
DLE data link escape
DLL dynamic link library
DLP discrete logarithm problem
DMA direct memory access
DMI desktop management interface
DMS document management system
DMT discrete multitone modulation
DNARD Digital network appliance reference design
DND drag and drop
DNS Domain Name System
DOE distributed object environment
DOF data over fibre
DOM document object model
DOS denial of service
DOS disk operating system
DP DisplayPort
DPC deferred procedure call
DPCM differential pulse code modulation
DPD dead peer detection
DPI deep packet inspection
DPI dots per inch
DPL descriptor privilege level
DPS Display PostScript
DPST display power savings technology
DRAM dynamic random access memory
DRI direct rendering infrastructure
DRM digital rights management
DRRS display refresh rate switching
DS debug store
DSA digital signature algorithm
DSB double-sideband modulation
DSDT differentiated system descriptor table
DSL digital subscriber line
DSL domain specific language
DSLAM digital subscriber line access multiplexer
DSN delivery status notification
DSO dynamic shared object
DSP digital signal processor
DSSS direct sequence spread spectrum
DTD document type definition
DTE data terminal equipment
DTE dumb terminal emulator
DTL diode-transistor logic
DTS digital thermal sensor
DUT device under test
DVB digital video broadcasting
DVCS distributed version control system
DVD digital versatile disc
DVFS dynamic voltage and frequency scaling
DVI device independent
DVI Digital Visual Interface
DVR digital video recorder
E-XER extended XML encoding rules
EABI embedded-application binary interface
EAP Extensible Authentication Protocol
EBR extended boot record
EC elliptical curve
ECC error correction code
ECDL elliptical curve discrete logarithm
ECDSA elliptical curve digital signature algorithm
ECL emitter-coupled logic
ECN explicit congestion notification
ECP enhanced capability port
ECS enhanced chip set
ECS extended configuration space
EDAT enhanced dynamic acceleration technology
EDGE explicit data graph execution
EDID extended display identification data
EDO extended data out
EDS electronical data sheet
EEPROM electrically erasable programmable read only memory
EFI extensible firmware interface
EFL emitter follower logic
EFM eight to fourteen modulation
EGA Enhanced Graphics Adapter
EGP exterior gateway protocol
EH extension header
EIDE enchanced IDE
EISA extended industry standard architecture
ELF executable and linking format
ELS entry level system
EMI electro-magnetic interference
EMP electro-magnetic pulse
EMR electro-magnetic radiation
EOF end of file
EOI end of interrupt
EOL end of line
EOT end of transmission
EPIC explicitly parallel instruction computing
EPP enhanced parallel port
EPRML extended partial response, maximum likelihood
EPROM erasable programmable read only memory
ERD emergency recovery disk
ERD entity relationship diagram
ERE extended regular expression
ESDRAM enhanced synchronous dynamic random access memory
ESS electronic switching system
ESS extended service set
ESSID extended service set identifier
EST enhanced speedstep
ETL extract, transform, load
EU execution unit
EULA end user license agreement
FAT file allocation table
FBRAM frame buffer random access memory
FCL fiber channel loop
FCS frame check sequence
FDC floppy disk controller
FDD floppy disk drive
FDDI fiber distributed data interface
FDE full disk encryption
FEA finite element analysis
FEC forward error correction
FET field-effect transistor
FF form feed
FFH functional fixed hardware
FFI foreign function interface
FFM focus follows mouse
FFS Fast File System
FFS find first set
FFT fast Fourier transform
FG floating gate
FHSS frequency hop spread spectrum
FID frequency identifier
FIFO first in, first out
FILO first in, last out
FIR fast infrared
FLOPS floating [point] operations per second
FLOSS free/libre/open source software
FM frequency modulation
FMR false match rate
FOSS free/open source software
FPGA field programmable gate array
FPM fast page mode
FPR floating point register
FPU floating point unit
FQDN fully qualified domain name
FRR false rejection rate
FRU field replaceable unit
FS file system
FSB front side bus
FSCK file system check
FSF Free Software Foundation
FSK frequency shift keying
FSM finite-state machine
FTA fault tree analysis
FTL flash translation layer
FTP File Transfer Protocol
FTPS File Transfer Protocol Secure
FUS fast user switching
FWH firmware hub
FWS folding white space
GAL generic array logic
GAS generic address structure
GC garbage collector
GCR group-coded recording
GDT global descriptor table
GEM graphics environment manager
GEM graphics execution manager
GENA general event notification architecture
GHC Glasgow Haskell compiler
GID group identifier
GIF graphics interchange format
GMCH graphics and memory controller hub
GNU GNU's Not Unix
GOT global offset table
GPE general purpose event
GPF general protection fault
GPG GNU Privacy Guard
GPL [GNU] General Public License
GPR general purpose register
GPS generalized processor sharing
GPT GUID partition table
GPU graphics processing unit
GR golden ratio
GRE generic routing encapsulation
GSI global system interrupt
GUI graphical user interface
GUID globally unique identifier
HA high availability
HAL hardware abstraction layer
HAT hashed array tree
HBA host bus adapter
HCF halt and catch fire
HCI host controller interface
HCI human-computer interaction
HCL hardware compatibility list
HDCP High-bandwidth Digital Content Protection
HDD hard disk drive
HDL hardware description language
HDMI High-Definition Multimedia Interface
HDTV high-definition television
HF high frequency
HFM highest frequency mode
HID human interface device
HLL high-level language
HMA high memory area
HMI human-machine interface
HOOD hierarchical object oriented design
HP Hewlett-Packard
HPC high performance computing
HPET high precision event timer
HT hyper-threading
HTC hardware thermal control
HTCC high temperature co-fired ceramic
HTML HyperText Markup Language
HTT hyper-threading technology
HTTP Hypertext Transfer Protocol
HTTPS Hypertext Transfer Protocol Secure
HVM hardware virtual machine
HZ Hertz
I2O intelligent input/output
IA information assurance
IANA Internet Assigned Numbers Authority
IBC iterated block cipher
IBM International Business Machines
IBS instruction based sampling
IBSS independent basic service set
IC integrated circuit
ICA independent computer architecture
ICB Internet Citizen's Band
ICE in-circuit emulator
ICE internal compiler error
ICH I/O controller hub
ICMP Internet Control Message Protocol
ICT information and communications technology
ICW initialization command word
IDA Intel dynamic acceleration
IDCMP Intuition direct communication message port
IDE integrated development environment
IDE integrated drive electronics
IDPS intrusion detection [and] prevention system
IDRP inter-domain routing protocol
IDS intrusion detection system
IDT interrupt descriptor table
IE Internet Explorer
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers
IESG Internet Engineering Steering Group
IETF Internet Engineering Task Force
IF intermediate frequency
IFCM isochronous flow control mode
IFF Interchange File Format
IGD Internet gateway device
IGMP Internet Group Management Protocol
IGP interior gateway protocol
IHV independent hardware vendor
IKE Internet key exchange
ILM internal loopback mode
ILOM integrated lights-out management
ILP instruction level parallelism
IM instant messaging
IMAP Internet Message Access Protocol
IMC integrated memory controller
IMCR interrupt mode configuration register
IMR interrupt mask register
IMS information management system
INCITS InterNational Committee for Information Technology Standards
IO input/output
IOCTL input/output control
IOMMU input/output memory management unit
IOT Internet of Things
IP Internet Protocol
IP intellectual property
IPC interprocess communication
IPE integrated programming environment
IPI interprocessor interrupt
IPNG Internet Protocol, Next Generation
IPS in-plane switching
IPS intrusion prevention system
IPSEC Internet Protocol Security
IRC Internet Relay Chat
IRDA infrared data association
IRQ interrupt request
IRQL interrupt request level
IRR interrupt request register
IRTF Internet Research Task Force
IS information system
ISA industry standard architecture
ISA instruction set architecture
ISDN integrated services digital network
ISI inter-symbol interference
ISM industrial, scientific, [and] medical
ISN initial serial number
ISO International Standards Organization
ISOC Internet Society
ISP Internet service provider
ISR in-service register
ISR interrupt service routine
IST interrupt stack table
ISV independent software vendor
IT information technology
ITB Intel Turbo Boost
IV initialization vector
IVT interrupt vector table
JBOD just a bunch of disks
JFET junction [gate] field-effect transistor
JIT just in time
JPEG Joint Photographic Experts Group
JRE Java Runtime Environment
JTAG joint test action group
KB keyboard
KB kilobyte
KBD keyboard
KBD kilobaud
KLOC thousand lines of code
KMS kernel-mode setting
KNF kernel normal form
KPI kernel programming interface
KVA kernel virtual address
KVM kernel virtual machine
KVM kernel virtual memory
KVM keyboard, video, [and] mouse
LAMP Linux Apache MySQL {Perl,PHP,Python}
LAN local area network
LAPIC local advanced programmable interrupt controller
LAR load access rights
LBA logical block addressing
LBS location-based service
LCD liquid crystal display
LCP link control protocol
LDA local delivery agent
LDAP Lightweight Directory Access Protocol
LDR light-dependent resistor
LDT local descriptor table
LE logical extent
LED light emitting diode
LER label edge router
LF line feed
LF low frequency
LFM lowest frequency mode
LFN long file names
LFO low-frequency oscillation
LFS log-structured file system
LFU least frequently used
LHP loop heat pipe
LIFO last in, first out
LILO LInux LOader
LILO last in, last out
LINT local interrupt
LIR local Internet registry
LKM {Linux,loadable} kernel module
LKML Linux kernel mailing list
LL load linked
LL/SC load linked/store conditional
LLC logical link control
LLDP link layer discovery protocol
LLF low level format
LLMNR link-local multicast name resolution
LLVM Low Level Virtual Machine
LM long mode
LMM link management mode
LNO loop nest optimization
LOC lines of code
LOM lights-out management
LPC low pin count
LPS local positioning system
LRC longitudinal redundancy check
LRM left-to-right mark
LRO left-to-right override
LRU least recently used
LSB Linux standards base
LSB least significant {bit,byte}
LSI large scale integration
LSL load segment limit
LSN Large Scale NAT
LSN log sequence number
LSR label switch router
LTCC low temperature co-fired ceramic
LTR left to right
LTR load task register
LTR letter(-sized paper)
LUN logical unit number
LV logical volume
LVM logical volume management
LVT local vector table
LWP light-weight process
LZW Lempel Ziv Welch
MAC mandatory access control
MAC medium access control
MAC message authentication {check,code}
MADT multiple APIC descriptor table
MB megabyte
MBR master boot record
MBS megabits per second
MC memory controller
MCA machine check architecture
MCA MicroChannel architecture
MCC multiversion concurrency control
MCE machine check exception
MCGA Multi-Color Graphics Array
MCH memory controller hub
MCM multi-chip module
MCQ memory controlled queue
MD machine-dependent
MDA mail delivery agent
MDA Monochrome Display Adapter
MDRAM multibank dynamic random access memory
MESI modified, exclusive, shared, invalid
MFC merge from current
MFC Microsoft Foundation Classes
MFM modified frequency modulation
MI machine-independent
MIB management information base
MIC message integrity {check,code}
MID mobile Internet device
MIDI musical instrument digital interface
MIF management information format
MIM man in the middle
MIMD multiple instruction, multiple data
MIME Multipurpose Internet Mail Extensions
MIMO multiple input multiple output
MIPS million instructions per second
MISD multiple instruction, single data
MIT Massachusetts Institute of Technology
MITM man in the middle
ML machine language
ML machine learning
ML mailing list
ML markup language
ML maximum likelihood
MLC multi-level cell
MLHP micro loop heat pipe
MMIC monolithic microwave integrated circuit
MMIO memory mapped input/output
MMORPG massive multiplayer online role playing game
MMU memory management unit
MMX matrix math extension
MMX multimedia extension
MMX multiple math extension
MO magneto-optical
MOESI modified, owned, exclusive, shared, invalid
MOF maximum operating frequency
MOSFET metal-oxide-semiconductor field-effect transistor
MOSI modified, owned, shared, invalid
MP multi-platform
MP multiplayer
MP {multiprocessing,multiprocessor}
MPEG moving picture experts group
MPI message passing interface
MPLS Multiprotocol Label Switching
MPP massively parallel processor
MPS memory pool system
MPS multiprocessor specification
MR modem ready
MRU most recently used
MS Microsoft
MSB most significant {bit,byte}
MSE mean square error
MSF minutes seconds frames
MSI message signaled interrupt
MSI modified, shared, invalid
MSR machine state register
MSS maximum segment size
MT machine translation
MTA mail transfer agent
MTBF mean time between failures
MTP media transfer protocol
MTRR memory type range register
MTTF mean time to failure
MTU maximum transmission unit
MUA mail user agent
MUD multi-user domain
MVCC multiversion concurrency control
MWE module width encoding
MX mail exchange
NACK negative acknowledgement
NAN not a number
NAPT Network Address Port Translation
NAS network attached storage
NAT network address translation
NAV network allocation vector
NC numerical control
NCO numerically-controlled oscillator
NCP Network Control Protocol
NCQ native command queuing
ND neighbor discovery
NDFA nondeterministic finite automaton
NE numeric error
NFA nondeterministic finite automaton
NFS network file system
NIA next instruction address
NIC network information center
NIC network interface card
NIDS network intrusion detection system
NIP network interface protocol
NIPS network intrusion prevention system
NIS network information service
NLS native language support
NMI non-maskable interrupt
NNTP Network News Transfer Protocol
NOC network operations center
NOP no operation
NOS network operating system
NP nondeterministic polynomial time
NRZ non-return to zero
NSA National Security Agency
NTM non-deterministic Turing machine
NTP Network Time Protocol
NUMA non-uniform memory access
NVRAM non-volatile random access memory
NW not write-through
NX no execute
OAEP optimal asymmetric encryption padding
OBO off by one
OBOE off by one error
OCL object constraint language
OCR optical character recognition
ODCM on-demand clock modulation
ODT on-die termination
OEM original equipment manufacturer
OFDM orthogonal frequency division multiplexing
OFET organic field-effect transistor
OLAP online analytical processing
OLE object linking and embedding
OLTP online transaction processing
ONFI open nand flash interface
OO OpenOffice
OO object oriented
OOB out of band
OOE out of order execution
OOM out of memory
OOO OpenOffice.org
OOP object oriented programming
OOPS object oriented programming systems
OOSE object oriented software engineering
OPM operations per minute
OPS operations per second
OQL Object Query Language
ORB object request broker
ORM object-relational mapping
OS operating system
OSD open source definition
OSF open software foundation
OSI Open Source Initiative
OSI open systems interconnection
OSPF open shortest path first
OSPM OS power management
OSS open sound system
OSS open source software
OSVW operating system visible workarounds
OTP one time password
OTP open telecom platform
OU organizational unit
OUI organizationally unique identifier
OWL Web Ontology Language
P2P PCI to PCI
P2P peer to peer
PA phase accumulator
PA physical address
PAC phase-amplitude converter
PAE physical address extension
PAL phase alternating line
PAL programmable array logic
PAM pluggable authentication modules
PAM pulse amplitude modulation
PAP password authentication protocol
PAT page attribute table
PAT port address translation
PATA parallel ATA
PAX portable archive exchange
PBE pending break encoding
PBE programming by example
PC personal computer
PC program counter
PCB printed circuit board
PCC Portable C Compiler
PCD page-level cache disable
PCE performance-monitor counter enable
PCI peripheral component interconnect
PCM phase change memory
PCM pulse code modulation
PCMCIA Personal Computer Memory Card International Association
PCP Port Control Protocol
PD public domain
PDA personal digital assistant
PDA pushdown automaton
PDAG propositional directed acyclic graph
PDB power distribution board
PDF portable document format
PDM pulse-duration modulation
PDN pull-down network
PDP page {descriptor,directory} page
PDS product data sheet
PDU protocol data unit
PE protection enable
PECI platform environment control interface
PEP protocol extension protocol
PER packed encoding rules
PFS perfect forward secrecy
PGAS partitioned global address space
PGE page global enable
PGP Pretty Good Privacy
PHB PCI host bridge
PHP PHP: Hypertext Preprocessor
PIC position independent code
PIC programmable interrupt controller
PICNIC problem in chair, not in computer
PID process id
PIE position independent executable
PIM personal information manager
PIM platform-independent model
PIO programmed input/output
PIPT physically indexed, physically tagged
PIQ prefetch input queue
PIT programmable interrupt timer
PIV personal identity verification
PKCS public-key cryptography standards
PKI public key infrastructure
PLC programmable logic controller
PLD programmable logic device
PLL phase locked loop
PLRU pseudo LRU
PLTM package level thermal management
PM power management
PM {phase,pulse} modulation
PME power management event
PMI platform management interrupt
PMIO port-mapped input/output
PMT photo-multiplier tube
PMU power management unit
PNG portable network graphics
PNP plug and play
POE power over ethernet
POF probability of failure
POP Post Office Protocol
POP power on password
POSIX Portable Operating System Interface [for Unix]
POST power on self test
POTS plain old telephone system
PP pair programming
PPB PCI [to] PCI bridge
PPC PowerPC
PPI pixels per inch
PPM pages per minute
PPP Point-to-Point Protocol
PPPOA Point-to-Point Protocol over ATM
PPPOE Point-to-Point Protocol over Ethernet
PPU physics processing unit
PRBS pseudo-random bit sequence
PRML partial response, maximum likelihood
PRN pseudo random {noise,number}
PRNG pseudo random number generator
PROM programmable read only memory
PSD power spectral density
PSE page size extensions
PSK phase shift keying
PSK pre-shared key
PSTN public switched telephone network
PSW program status word
PTE page table entry
PTLA pseudo top level aggregator
PTP page table page
PTV perceived target value
PU processing unit
PUN physical unit number
PV physical volume
PVG physical volume group
PVI protected-mode virtual interrupt
PWM pulse width modulation
PXE preboot execution environment
QA quality assurance
QAM quadrature amplitude modulation
QAM quality assurance management
QBE query by example
QC quality control
QDI quasi delay insensitive
QOS quality of service
R/O read only
R/W read/write
RA receiver address
RA remote assistance
RA resource affinity
RA router advertisement
RAD rapid application development
RAID redundant array of {independent,inexpensive} disks
RAM random access memory
RAS reliability, availability and serviceability
RAS remote access service
RAS restartable atomic sequence
RAS row address strobe
RBF radial basis function
RBT red-black tree