@c -*-texinfo-*-
@c This is part of the GNU edition of V.E.R.A.
@c Copyright (C) 1993/2006 Oliver Heidelbach
@c See the file vera.texi for copying conditions.
@c 
@c Syntax:
@c ACRONYM
@c Expansion[ (Reference)][, "Style"]
@c Additional explanations are included in [square brackets]

@table @asis
@item P2CC2P
PCI to CPU / CPU tp PCI [concurrency] (BIOS, PC, PCI, CPU), "P2C/C2P"

@item P2P
Peer to Peer [network]

@item P3P
Platform for Privacy Preferences (WWW)

@item P64
Pointer 64 [bit] (BIT)

@item PA
Precision Architecture (HP)

@item PABX
Private Automatic Branch eXchange

@item PAC
PCI AGP Controller (Intel, IC, PCI, AGP)

@item PAC
Privilege Attribute Certificate (DCE)

@item PAC
Proxy Auto-Config (WWW, Mozilla)

@item PACE
Priority Access Control Enabled (3Com, ethernet)

@item PACER
Public Access to Court Electronic Records

@item PACS
Picture Archiving and Communications Systems

@item PACS
Public-Access Computing Systems

@item PACT
Partnership in Advanced Computing Technologies (org. UK)

@item PACT
Personal Air Communications Technology, "pACT"

@item PACT
Production Analyses Control Technique

@item PACX
Private Automatic Computer eXchange

@item PAD
Packet Assembling Disassembling (CCITT, X.3, X.28, X.29, PSDN)

@item PADS
Programmer's Advanced Debugging System

@item PAE
Physical Address Extension (Intel, Pentium, PAE)

@item PAEB
Pan American EDIFACT Board (UN/EDIFACT)

@item PAEB
Pan American EDIFACT Board (org., EDIFACT), "PA/EB"

@item PAI
Process After Input (R/3)

@item PAL
Paradox Application Language (Borland, DB)

@item PAL
Phase Alternating Line

@item PAL
Privileged Architecture Library (DEC, Alpha)

@item PAL
Programmable Array Logic

@item PALCD
Plasma Addressable Liquid Crystal Display (LCD)

@item PAM
Paging Area Memory

@item PAM
Pluggable Authentication Module (Linux, LISA)

@item PAM
Primary Access Method (BS2000)

@item PAM
Programmable Attribute Maps (DRAM, PCI)

@item PAM
Pulse Amplification Modulation

@item PAML
Publicly Accessible Mailing Lists (Internet, BBS)

@item PAN
Personal Account Number

@item PAN
Personal Area Network (IBM, Bluetooth)

@item PAN
Personal Area Networking [profile] (Bluetooth)

@item PANDORA
Preserving and Accessing Networked Documentary Resources of Australia

@item PANIX
Public Access internet/uNIX [system] (Unix, Internet, network)

@item PAP
Password Authentication Protocol (RFC 1334)

@item PAP
Printer Access Protocol (AppleTalk)

@item PAP
ProgrammAblaufPlan (DIN 66001)

@item PAPI
PC voice API (API, PC)

@item PAR
Portal ARchive (SAP, EP)

@item PAR
Positive Acknowledgement with Retransmission [protocols]

@item PAR
Project Authorization Request (IEEE)

@item PARC
Palo Alto Research Center (org., USA, Xerox)

@item PARISC
Precision Architecture, Reduced Instruction Set Computing (RISC, HP), "PA-RISC"

@item PARLE
[conference on] Parallel ARchitecture and Languages Europe (ECRC, conference)

@item PARTS
Parts Assembly and Reuse Tool Set (Visual Smalltalk)

@item PAS
Publicly Available Specifications (ISO)

@item PAS2
Personal Application System /2 (IBM, DB2/2), "PAS/2"

@item PASC
Portable Application Standards Committee (org., IEEE)

@item PASM
Parrot ASseMbly language (PERL)

@item PAT
Performance Acceleration Technique (Intel, MCH)

@item PAT
Port and Address Translation (IOS, Cisco, LAN, IP)

@item PAT
Program Association Table (DVB)

@item PAUSE
PERL Authors Upload SErver (PERL, CPAN)

@item PAWS
Protection Against Wrapped Sequence space (TCP, satellite)

@item PAX
Pixel Addressing eXtensions (Intel, RISC, CPU)

@item PAX
Portable Archive eXchange (SCO, Unix)

@item PAX
Private Automatic eXchange

@item PB
Pipeline Burst [cache]

@item PBC
Peripheral Bus Computer

@item PBE
Prompt By Example

@item PBI
Pacific Bell Internet (ISP)

@item PBI
Phone Based Interface

@item PBM
Play By Mail [game]

@item PBO
Process Before Output (R/3)

@item PBS
Portable Batch System (Unix)

@item PBX
Private Branch eXchange

@item PC
Personal Computer

@item PC
Printed Circuit (IC)

@item PC
Priority Control

@item PC
Protocol Control

@item PC
Punched Card

@item PC97
Personal Computer 97 (MS), "PC 97"

@item PCA
Policy Certification Authority (DFN, PGP, cryptography)

@item PCA
Power Calibration Area (CD)

@item PCAT
Personal Computer - Advanced Technology, "PC-AT"

@item PCB
Printed Circuit Board

@item PCB
Process Control Block (BS2000)

@item PCB
Program Communication Block (IBM)

@item PCB
Protocol Control Block (TCP)

@item PCC
Portable C Compiler

@item PCCA
Personal Computer Communications Associations (org., USA)

@item PCD
Photo CD (Kodak, CD)

@item PCD
Portal Content Directory (SAP, EP)

@item PCD
Process Control Device

@item PCDA
Program Controlled Data Acquisition

@item PCDATA
Parsed Character DATA (DTD, CDATA)

@item PCDOS
Personal Computer DOS (OS, DOS, IBM, PC), "PC-DOS" 

@item PCELS
Policy Core Extension lightweight directory access protocol Schema (LDAP, RFC 3703/4104)

@item PCERT
Purdue Computer Emergency Response Team

@item PCF
Point Coordination Function (MAC, 802.11a, WLAN)

@item PCF
Portable Compiled Font

@item PCH
Paging CHannel (GSM, CCCH, mobile-systems)

@item PCH
Pre-Compiled Headers

@item PCI
Peripheral Component Interconnect (PCI)

@item PCI
Protocol Control Information (OSI, ETSI)

@item PCIA
Personal Communications Industry Association (org., USA, SMS)

@item PCIAS
Peripheral Component Interconnect Advanced Switching (PCI, PCIe, ASI), "PCI AS"

@item PCIC
PC card I/O Card (PCMCIA, I/O)

@item PCIE
Peripheral Component Interconnect Express, "PCIe"

@item PCIE
Permis de Conduire Informatique Europeen (ECDL)

@item PCIEAS
PCI Express Advanced Switching (PCI, ASI-SIG), "PCI-EAS"

@item PCIPM
PCI Power Management [specification] (PCI), "PCI PM"

@item PCIS
Portable Common Interface Set

@item PCISIG
Peripheral Component Interconnect - Special Interest Group (org., PCI, SIG), "PCI-SIG"

@item PCIX
Peripheral Component Interconnect - eXtended (PCI), "PCI-X"

@item PCIX
Personal Computer / unIX (IBM, PC), "PC/IX"

@item PCIXF
Personal Computer Integrated eXchange Format (OS/2), "PC/IXF"

@item PCL
Portable Common LOOPS (CLOS)

@item PCL
Printer Control Language (HP, PJL)

@item PCL
Programmable Command Language (CMU, DEC, TOPS)

@item PCM
Personal Computer Manufacturer

@item PCM
Physical Connection Management (FDDI, SMT)

@item PCM
Plug Compatible Machine

@item PCM
Pulse Coded Modulation

@item PCMCIA
People Can't Memorize Computer Industries Acronyms (slang)

@item PCMCIA
Personal Computer Memory Card International Association (org.)

@item PCMS
Project & Configuration Management System

@item PCMT
Personal Computer Message Terminal

@item PCN
Personal Communications Network

@item PCN
Public Communications Network (mobile-systems)

@item PCNFS
Personal Computer Network File System

@item PCNOS
Personal Computer / Network Operating System (OS, MS-DOS, CP/M), "PC/NOS"

@item PCO
Point of Control and Observation (ISO 9646-1, IUT)

@item PCP
Primary Control Program (IBM, OS, OS/PCP)

@item PCP
Printer Control Protocol

@item PCPC
Personal Computers Peripheral Corporation (manufacturer)

@item PCR
Peak Cell Rate (UNI, ATM, SCR)

@item PCR
Platform Configuration Registers (TPM)

@item PCR
Processor Configuration Register (Motorola, CPU)

@item PCR
Program Clock Reference

@item PCRAM
Phase-Change Random Access Memory (RAM, IC), "PC-RAM"

@item PCRE
Perl Compatible Regular Expression Library (PERL)

@item PCRW
Phase Change ReWritable (DVD, EMCA), "PC-RW"

@item PCS
Personal Communication System (Sony, Panasonic, Motorola)

@item PCS
Personal Communications Services

@item PCS
Programmable Communications Subsystem

@item PCS
Punched Card System (PC)

@item PCSA
Personal Computing Systems Architecture [= Pathworks] (DEC, NOS)

@item PCSC
Personal Computer / Smard Card (PC, PCMCIA), "PC/SC"

@item PCSD
Printer Control Sequence Description

@item PCSI
Pacific Communication Sciences, Inc. (manufacturer)

@item PCT
Private Communication Technology (Internet, MS, Visa)

@item PCT
Probe Control Table (FFST/2)

@item PCTCP
Personal Computer/Transmission Control Protocol, "PC/TCP" 

@item PCTE
Portable Common Tool Environment (CASE, ESPRIT)

@item PCTS
POSIX Compliance Test Suite (POSIX)

@item PCV
P-bit Coding Violation [error event] (DS3/E3, BIT)

@item PCV
Path Coding Violation [error event] (DS1/E1)

@item PCXT
Personal Computer - eXtended Technology, "PC-XT"

@item PD
Packetization Delay

@item PD
Plug & Display [standard] (LCD, VESA), "P&D"

@item PD
Public DOMAIN

@item PDA
Personal Digital Assistant

@item PDB
Per-DOMAIN Behaviour (DOMAIN, Internet)

@item PDB
Professional Disk for Broadcast (Sony, BD)

@item PDC
Personal Digital Cellular [network] (GSM)

@item PDC
Power Disk Cartridge (ECMA)

@item PDC
Primary DOMAIN Controller (MS, Windows NT, BDC)

@item PDC
PROLOG Development Center (manufacturer, Denmark, PROLOG)

@item PDD
PERL Design Document (PERL)

@item PDD
Professional Disk for Data (Sony, BD)

@item PDE
Partial Differential Equation

@item PDE
Personal Digital Entertainment

@item PDE
Plug-in Development Environment (Eclipse)

@item PDES
Product Data / Definition Exchange Standards (USA, STEP, CIM)

@item PDF
Portable Document Format (Adobe)

@item PDF
Program Development Facility (IBM)

@item PDFX
Portable Document Format / eXchange (PDF, CGATS, DTP), "PDF/X"

@item PDH
Plesiochronous Digital Hierarchy (ATM)

@item PDI
Power and Data Interface

@item PDK
Patterns Development Kit (WWW, IBM)

@item PDK
Peripheral Developers Kit (MS)

@item PDK
Portal Development Kit (SAP, EP)

@item PDL
Page Description Language (printing)

@item PDL
PERL Data Language (PERL)

@item PDL
Program Design Language

@item PDL
Program Development Language

@item PDLT
Process Dispatch Latency Time

@item PDM
Program Development Manager (IBM, ADT)

@item PDN
Programmer's Distribution Network (Fido)

@item PDN
Public Data Network (mobile-systems)

@item PDO
Portable Distributed Objects (NeXT)

@item PDOP
Positional Dilution Of Precision (GPS)

@item PDOS
Parallel and Distributed Operating System (OS, MIT)

@item PDP
Parallel Distributed Processing (AI)

@item PDP
Peripheral Data Processing

@item PDP
Plasma Display Panel

@item PDP
Programmable Data Processor (DEC)

@item PDQ
Parallel Data Query (Informix, DB)

@item PDS
Partitioned Data Set

@item PDS
Portable Display Shell (Shell)

@item PDS
Processor Direct Slot / Socket (Motorola, Apple)

@item PDS
Professional Development System (MS)

@item PDS
Public DOMAIN Software (PD)

@item PDSP
Peripheral Data Storage Processor

@item PDSS
Post Development and Software Support

@item PDT
Pacific Daylight Time [-0700] (TZ, PST, USA)

@item PDTR
Proposed Draft Technical Report

@item PDU
Packet Data Unit

@item PDU
Product Development Unit

@item PDU
Protocol Data Unit (OSI)

@item PDV
Photorealistic Data Visualization

@item PDV
ProzessDatenVerarbeitung

@item PE
Phase Encoding

@item PE
Portable eXecutable (Win32, Java)

@item PE
Preinstallation Environment (MS, Windows, XP)

@item PE
Processing Element (MPP)

@item PEA
Pocket Ethernet Adapter (LAN, ethernet)

@item PEAK
Python Enterprise Application Kit (Python)

@item PEAP
Protected Extensible Authentication Protocol (EAP, WPA, WLAN)

@item PEAR
PHP Extension and Application Repository (PHP)

@item PEARL
Process and Experiment Automation Realtime Language

@item PEBCAK
Problem Exists Between Chair And Keyboard (slang)

@item PEBI
PEtaBInary [(2^10)^5] (IEC)

@item PEBKAC
Problem Exists Between Keyboard And Chair (telecommunication, Usenet, IRC)

@item PEC
Program Execution Control (IBM, OS/2)

@item PECL
PHP Extension Code Library (PHP, PEAR)

@item PEDS
Planning, programming, budget, and execution Electronic Delivery System

@item PEEK
Partners Early Experience Kit (Taligent)

@item PEF
Preferred Executable Format (CFM, Apple)

@item PEG
PCI Express for Graphics (PCIe, Intel)

@item PEG
Platform European Grid [conference] (grid)

@item PEL
Picture ELement

@item PEM
Privacy Enhanced Mail (PSRG, RFC 1421/1422/1423/1424)

@item PEM
Proton Exchange Membrane fuel cell

@item PEN
Public Education Network

@item PEP
Packetized Ensemble Protocol (Telebit)

@item PEP
Personal Employee Portal (IBM)

@item PEP
Personal Exam Prep (MS, ATEC)

@item PEP
Polymer Electronic Printing

@item PEP
Python Enhancement Proposal (Python)

@item PER
Packed Encoding Rules (ASN.1)

@item PER
Program Event Recording

@item PERCS
Productive, Easy-to use, Reliable Comouting Systems (IBM)

@item PERL
Pathologically Eclectic Rubbish Lister (slang)

@item PERL
Practical Extraction and Report Language (PERL)

@item PERM
Pre-Embossed Rigid Magnetic (Sony, HDD)

@item PERMIS
PERManentes InventurabwicklungsSystem (MBAG)

@item PEROM
Programmable Erasable Read Only Memory (IC)

@item PERPOS
PERpetual Processing Operating System (OS, Unix)

@item PERT
Program Evaluation / Evolution and Review Technique

@item PES
P-bit Errored Seconds (DS3/E3, BIT)

@item PES
Packetized Elementary Stream (DVB, ISO, IEC 13818-2/13818-3)

@item PES
Photo-Electric Scanning (DTP)

@item PES
Programmed Electrical Stimulation

@item PES
Proposed Encryption Standard (cryptography)

@item PEST
Parameter Estimation by Sequential Testing

@item PET
Personal Electronic Translator

@item PET
Print Enhancement Technology (Compaq)

@item PET
Progressive Educational Technology

@item PEX
PHIGS Extension for X (X-Windows, PHIGS)

@item PFA
Parameter Field Address (Forth)

@item PFA
Predictive Failure Analysis (HDD)

@item PFC
Power Factor Correction

@item PFC
Protocol Field Compression (PPP)

@item PFD
Primary Flight Display (Airbus, A380)

@item PFE
Page Fault Error (Windows, MS)

@item PFK
Program Function Key

@item PFM
Printer Font Metrics (Adobe)

@item PFN
Page Frame Number (Linux, VPFN)

@item PFPU
Processor Frame Power Unit

@item PFR
Portable Font Resource (Netscape)

@item PFRAM
Polymeric Ferroelectric Random Access Memory (RAM, IC)

@item PFWG
[WAI] Protocols and Formats Working Group (WAI)

@item PGA
Patches Gratefully Accepted (slang, Cygwin, PTC)

@item PGA
Pin Grid Array (IC, CPU)

@item PGA
Professional Graphics Adapter (IBM)

@item PGC
Professional Graphics Controller

@item PGC
ProGram Chain (DVD)

@item PGD
Page Global Directory

@item PGFNA
Prince George Free-Net Association (org., USA)

@item PGI
Parameter Group Identifier (SPDU)

@item PGM
Practical General Multicast (Cisco, Multicast)

@item PGML
Precision Graphics Markup Language (XML, IBM, Netscape, Sun, Adobe)

@item PGO
Profile Guided Optimization (Intel)

@item PGP
Pretty Good Privacy

@item PGS
Program Generation System

@item PHB
PCI Host Bridge (Power4, IBM)

@item PHBT
Pseudomorphic Heterojunction Bipolar Transistor

@item PHIGS
Programmer's Hierarchical Interactive Graphics System

@item PHIGSPLUS
PHIGS Plus Lumiere and Surfaces (PHIGS), "PHIGS-PLUS"

@item PHIPS
Professional High-Resolution Image Processing System (CA)

@item PHLAK
Professional Hackers Linux Assault Kit (Linux)

@item PHOTON
paneuropean PHOtonic Transport Overlay Network (ACTS)

@item PHP
PHP Hypertext Preprocessor (PHP/FI, HTML, CGI, successorr)

@item PHPFI
Personal Home Page [construction kit]/Form Interpreter (HTML, CGI, PHP, predecessor), "PHP/FI"

@item PHUN
Phreakers and Hackers Underground Network (network)

@item PHY
PHYsical Layer Control (FDDI)

@item PI
Placement and Interconnect [system] (VLSI, MIT)

@item PI
Portable Interceptor (CORBA)

@item PIA
Peripheral Interface Adapter

@item PIA
Plug-In Administrator

@item PIA
Primary Interop Assembly (VSTO, MS)

@item PIC
Personal Intelligent Communicator

@item PIC
Point in Call (IN)

@item PIC
Position Independent Code (DLL)

@item PIC
Primary Independent Carrier

@item PIC
Priority Interrupt Controller (IC)

@item PIC
Programmable Interrupt Controller (PIC)

@item PICC
Proximity Integrated Circuit Card (RFID)

@item PICG
PCTE Interface Control Group (org., PCTE)

@item PICMG
PCI Industrial Computer Manufacturers Group (org., PCI)

@item PICS
Platform for Internet Content Selection (org., Internet)

@item PICS
Plug-in Inventory Control System

@item PICS
Protocol Implementation Conformance Statements

@item PICSDCPR
PICS Detailed Continuing Property Record, "PICS/DCPR"

@item PICU
Priority Interrupt Control Unit

@item PID
Packet IDentification (DVB)

@item PID
Process IDentification number (Unix)

@item PID
Protocol IDentifier [governing connection types]

@item PIE
Personal Interactive Electronics [division] (Apple)

@item PIF
Parity Inner Failure (DVD)

@item PIFS
Point Coordination Function - InterFrame Space (MAC, 802.11a, PCF, IFS, WLAN)

@item PIG
Psion Interest Group (Psion)

@item PIIX
PCI IDE/ISA eXcelerator (Intel, IC, PCI, IDE, ISA)

@item PIKT
Problem Informant/Killer Tool (GNU, Linux)

@item PIL
Python Imaging Library (Python)

@item PIM
Parallel Inference Machine (FGCS, AI)

@item PIM
Personal Information Manager / Management

@item PIM
Platform Independent Model (MDA)

@item PIM
Protocol Independent Multicast (ACM, Multicast)

@item PIMA
Photographic & Imaging Manufacturers Association (org., predecessor, I3C)

@item PIMB
PCTE Interface Management Board (org., PCTE)

@item PIMDM
Protocol Independent Multicast-Dense Mode [protocol] (PIM, ACM, Multicast), "PIM-DM"

@item PIMF
Paar [kabel] In MetallFolie (VDE, STP), "PiMF"

@item PIMS
Project Information Management System

@item PIMSM
Protocol Independent Multicast-Sparse Mode [protocol] (RFC 2117/2362, PIM, ACM, SM, Multicast), "PIM-SM"

@item PIN
Personal Identification Number (banking, ICC)

@item PIN
Personal Internet Name (RFC 3042)

@item PIN
Processor Independent Netware (Novell, HP, DEC, Apple, Sun)

@item PINE
Program for Internet News and Email / PINE Is No longer ELM

@item PINET
Physicians Information NETwork (network, USA)

@item PING
Packet InterNet Groper (ICMP, TCP/IP)

@item PINT
PSTN INTernet Interworking [group] (PSTN, IETF)

@item PIO
Parallel / Programmed Input/Output

@item PIOS
Personen, Institutionen, Objekte, Sachen (INPOL)

@item PIP
Packet Interface Port

@item PIP
Paper Impact Printing

@item PIP
Peripheral Interchange Program

@item PIP
Personal Information Processor

@item PIP
Picture In Picture (video)

@item PIP
Plug-In Protocol (ZOC)

@item PIPS
Parallel Information Processing System (GNU)

@item PIPS
Pattern Information Processing Systems

@item PIRA
Printing Industries Research Association (org.)

@item PIRQ
Peripheral Component Interconnect Interrupt ReQuest (PCI, IRQ)

@item PISA
Portable InformationsSystem Architecture (DB, infodas, PISA)

@item PISABG
PISA/Business Graphics (PISA), "PISA/BG"

@item PISADB
PISA/Data Base (PISA, DB), "PISA/DB"

@item PISADD
PISA/Data Dictionary (PISA), "PISA/DD"

@item PISADK
PISA/ ??? (PISA), "PISA/DK"

@item PISAMP
PISA/Menue Processor (PISA), "PISA/MP"

@item PISANT
PISA/ ??? (PISA), "PISA/NT"

@item PISAPPS
PISA/ProduktionsPlanung und -Steuerungssystem (PISA), "PISA/PPS"

@item PISAQL
PISA/Query Language (PISA), "PISA/QL"

@item PISARG
PISA/Report Generator (PISA), "PISA/RG"

@item PISN
Private Integrated Services Network (ECMA)

@item PISW
Process Interrupt Status Word (CPU, assembler)

@item PIT
Point In Time (DB)

@item PIT
Programmable Interval Timer

@item PITA
Pain In The Anatomy / Ass (slang, Usenet, IRC)

@item PIU
Path Information Unit (IBM, SNA)

@item PIU
Plug-In Unit

@item PIXEL
PIcture ELement

@item PIXIT
Protocol Implementation eXtra Information for Testing

@item PJL
Print Job Language (HP, PCL, printing)

@item PK
Public Key (cryptography)

@item PKCS
Public Key Cryptography Standards (org., USA, cryptography)

@item PKI
Public Key Infrastructure (cryptography, Internet, ITU, PKI)

@item PKIX
Public Key Infrastructure X.509 (PKI, cryptography)

@item PKS
Polizeiliche KriminalStatistik (INPOL)

@item PKS
Public Key Server (PGP, GPG, SKS, HKS)

@item PKT
Partition Knowledge Table

@item PL
Physical Layer (ISO, OSI)

@item PLA
Program License Agreement (IBM)

@item PLA
Programmable Logic Array

@item PLATO
Programmed Logic for Automated Teaching Operations

@item PLB
Picture Level Benchmark (GPC)

@item PLBSI
Picture Level Benchmark Sample Implementation (GPC)

@item PLC
PowerLine Communications [adapter]

@item PLC
Programmable Logic Controller (IC)

@item PLCC
Plastic Leaded [/ Leadless] Chip Carrier

@item PLCP
Physical Layer Convergence Procedure / Protocol (UNI, DS-3)

@item PLD
Programmable Logic Device (IC, RL)

@item PLDA
Private Loop Direct Attach

@item PLDM
Power Line Disturbance Monitor

@item PLE
Personal Learning Edition (Maya)

@item PLED
Polymer Light Emitting Display (LED)

@item PLI
Programming Language One (DEC), "PL/I"

@item PLIP
Parallel Line Internet Protocol (IP), "PL/IP" 

@item PLL
Phase Locked Loop

@item PLM
Programming Language for Microcomputers

@item PLMN
Public Land Mobile Network (mobile-systems, GSM)

@item PLONK
Please Leave Our Newsgroup, Kid (Usenet, slang)

@item PLOU
Physical Layer Overhead Unit (UNI), "PL-OU"

@item PLP
Packet Layer Protocol (X.25)

@item PLP
Party Line Protocol

@item PLP
Presentation Level Protocol

@item PLRS
Power Line Remote Switch

@item PLS
Personal Library Systems (manufacturer)

@item PLS
PhysicaL Signaling

@item PLS
Programmable Logic Sequencer

@item PLT
Procedure Linkage Table

@item PLV
Presentation Level Video (DVI, Intel)

@item PM
Performance Management

@item PM
Peripheral Module

@item PM
Personal Message (BBS)

@item PM
Physical Medium

@item PM
Port Multiplier (SATA)

@item PM
Presentation Manager (OS/2)

@item PM
Privileged Mode (HP, MPE)

@item PM
Protected Mode (Intel, CPU)

@item PMA
Physical Medium Attachment

@item PMA
Policy Management Architecture (Netmanage, Internet)

@item PMA
Program Memory Area (CD)

@item PMAC
Packet Media Access Control (FDDI), "P-MAC"

@item PMAC
Peripheral Module Access Controller

@item PMBR
PIM Multicast Border Router (PIM, Multicast)

@item PMC
[Zen] Portable Media Center

@item PMC
Print Management Console (MS, Windows, Vista)

@item PMC
Pseudo-Machine Code

@item PMD
Page Middle Directory

@item PMD
Physical layer, Medium Dependant [sub-layer] (FDDI, UNI)

@item PMDRAM
Page Mode Dynamic Random Access Memory (RAM, DRAM, IC), "PM-DRAM"

@item PME
Pattern Matching Engine

@item PME
Power Management Event (BIOS)

@item PMJI
Pardon Me for Jumping In (slang)

@item PMK
Pairwise Master Key (RSN, cryptography)

@item PMMU
Paged Memory Management Unit

@item PMO
Program Management Office (Sun, JCP)

@item PMOS
Positive-channel Metal Oxide Semiconductor (IC)

@item PMP
Point to MultiPoint (UNI)

@item PMP
Preventive Maintenance Package (AIX, IBM)

@item PMPO
Peak Music Power Output

@item PMR
Poor Man's Routing

@item PMR
Problem Management Report (IBM)

@item PMS
Personal Mailing System

@item PMS
Processor Memory Switch

@item PMS
Project Management System

@item PMS
Public Message System

@item PMSP
Preliminary Message Security Protocol

@item PMT
Program Map Table (DVB, PAT)

@item PMT
Program Map Table (DVB)

@item PMTU
Path MTU Recovery (MTU, TCP/IP)

@item PMU
PowerMeter Unit

@item PMW
Project Manager Workbench

@item PMX
Packet MultipleXer (MUX)

@item PMX
Presentation Manager for the X window system, "PM/X" 

@item PNG
Portable Network Graphics [format] (RFC 2083)

@item PNI
Prescott New Instruction set (Intel, Pentium)

@item PNNI
[phase 0] Public Network Node Interface [protocol] (ATM)

@item PNNI
Private Network to Network Interface (ATM), "P-NNI"

@item PNP
Plug 'N Play (PNP), "PnP"

@item PNPBIOS
Plug and Play Basic Input Output System (PNP, BIOS), "PnP BIOS"

@item PNPN
Positive Negative Positive Negative [devices]

@item PNS
PeaceNet Sweden (network)

@item PNW
Personal NetWare (Novell, Netware)

@item PO
Portable Object (MO)

@item POA
Portable Object Adapter (CORBA, .NET)

@item POACH
PC-On-A-Chip (PC)

@item POC
Proof of Concept

@item POC
Push to talk Over Cellular (GPRS), "PoC"

@item POCSAG
Post Office Code Standard Advisory Group (org., SMS)

@item POD
Plain Old Document [format]

@item POD
Print / Publishing On Demand, "PoD"

@item PODA
Piloting of ODA (ESPRIT, SNI, Bull, TITN, ICL, Olivetti, ODA)

@item PODA
Priority Orientated Demand Assignment (MAC, TDM)

@item POE
PERL Object Environment (PERL)

@item POE
Power Over Ethernet (LAN), "PoE"

@item POE
PowerOpen Association (Apple, IBM, Motorola, ..., org.)

@item POEM
Portable Object-orientated Entity Manager (SGML)

@item POEMS
Platinum Open Enterprise Management System

@item POEP
Primary Operand Execution Pipeline (Motorola, CPU), "pOEP"

@item POF
Parity Outer Failure (DVD)

@item POF
Plastic Optical Fiber (OWG)

@item POGO
Programmer-Oriented Graphics Operation

@item POH
Path OverHead (SONET)

@item POI
Path Overhead Indicator (SONET)

@item POI
Point Of Information

@item POI
Point Of Interaction (IN)

@item POJI
Plain Old Java Interfaces (Java)

@item POL
Problem / Procedure / Process Oriented Language

@item POM
Project Object Model (Maven)

@item PON
Passive Optical Network

@item POOL
Parallel Object Orientated Language (DOOM, OOP)

@item POP
Package for Online Programming

@item POP
Point Of Presence (Internet, ISP)

@item POP3
Post Office Protocol 3 (Internet, RFC 1939)

@item POR
Point Of Return (IN)

@item POR
Power-On Reset (BIOS)

@item POS
Piece Of Shit (slang, Usenet, IRC)

@item POS
Primary Operating System (OS, RCA Spectra 70)

@item POS
Professional Operating System (OS, DEC), "P/OS"

@item POS
Programmable Object Select

@item POSE
Palm Operating System Emulator (Palm)

@item POSI
Promoting conference for OSI (Japan, org., conference)

@item POSIX
Portable Operating System for unIX (OS, IEEE 1003, ISO 9945, PASC, Unix)

@item POST
Power-On Self-Test

@item POSYBL
PrOgramming SYstem for distriButed appLications

@item POTS
Plain Old Telephone System (slang, Usenet, IRC)

@item POV
Persistence of Vision (raytracing)

@item POWER
Power Optimization With Enhanced RISC [chip] (IBM, Apple, Motorola)

@item PP
Physical Partition (LVM)

@item PP
Physical Plane (IN)

@item PP
Pre-Processor

@item PP
Protection Profile (CC)

@item PPA
Parallel Port Adapter

@item PPA
PicoPeeringAgreement (network)

@item PPB
Push Pull Before [recording] (DVD), "PPb"

@item PPBDV
Push Pull Before [recording] Disc Variation (DVD), "PPb DV"

@item PPC
PowerPC (Apple)

@item PPC
Program to Program Communication (Apple)

@item PPD
Postscript Printer Definition (DTP)

@item PPDS
Personal Printer Data Stream

@item PPDU
Presentation Protocol Data Unit (PDU, OSI, ISO 8823, OSI/RM)

@item PPE
Packet Processing Engine (Hub)

@item PPE
Power Processor Element (IBM, Cell, SPE)

@item PPGA
Plastic Pin Grid Array (IC, CPU)

@item PPI
Parallel Port Interface

@item PPI
Pixels Per Inch

@item PPI
Programmable Peripheral Interface

@item PPID
Parent Process IDentification number (Unix)

@item PPK
Per Packet Key (FPK)

@item PPL
Pcboard Programming Language (BBS)

@item PPL
Polymorphic Programming Language (Harvard, Xerox, PARC)

@item PPM
Pages Per Minute

@item PPM
Post Programmable Memory (Nokia)

@item PPM
Pulse Position Modulation (MMVF)

@item PPMI
PCI bus Power Management Interface (PCI)

@item PPMS
Professional Productivity Management System

@item PPN
Project Programmer Number

@item PPN
Public Packet Switching

@item PPOP
Plain Paper Optimized Printing (Canon), "P-POP"

@item PPP
Point-to-Point Protocol (Internet, PPP, RFC 1171/1661)

@item PPPD
Point-to-Point Protocol DAEMON (PPP)

@item PPPOE
Point-to-Point Protocol Over Ethernet [protocol] (ADSL, RFC 2516), "PPPoE"

@item PPS
Packets Per Second

@item PPS
Parallel Processing System

@item PPS
ProduktionsPlanung und -Steuerung

@item PPS
Public Packet Switching [network]

@item PPSN
Public Packet-Switched Network

@item PPSU
Personal Printer Spooling Utility

@item PPTP
Point-to-Point Tunneling Protocol (MS, Ascend, IP)

@item PPU
Peripheral Processing Unit

@item PPVPN
Provider-Provisioned Virtual Private Network (VPN)

@item PQET
Print Quality Enhancement Technology (Lexmark)

@item PQFP
Plastic Quad Flat Package (CPU)

@item PR
Packet Radio

@item PR
Pattern Recognition

@item PR
Pentium Rating (AMD)

@item PR
Placement & Routing (RL, IC), "P&R"

@item PRA
Purported Responsible Address [algorithm] (MS, SPAM)

@item PRACSA
Public Remote-Access Computer Standards Association (org., USA)

@item PRAM
Parameter Random Access Memory (RAM, IC, Apple), "P-RAM"

@item PRAM
Phase-change Random Access Memory (RAM, IC, Intel)

@item PRCS
Project Revision Control System (GNU)

@item PREP
PowerPC REferenz Plattform (IBM, Apple), "PReP"

@item PREPNET
Pennsylvania Research and Economic Partnership NETwork (network, USA), "PREPnet"

@item PRF
Problem Report Form (IBM)

@item PRI
Primary Rate Interface (ISDN)

@item PRIDE
PRofitable Information by DEsign (IRM)

@item PRISM
Parallel Reduced Instruction Set Multiprocessing

@item PRISM
PRogrammed Integrated System Maintenance

@item PRMD
PRivate Management DOMAIN (X.400, MHS)

@item PRML
Partial Response - Maximum Likelihood (HDD, HD-DVD)

@item PRN
Pseudo Random Noise [code] (GPS)

@item PRNG
Pseudo Random Number Generator

@item PRO
Precision RISC Organization (org.)

@item PROFIBUS
PROcess FIeld BUS

@item PROFS
PRofessional OFfice System (IBM, VM)

@item PROLOG
PROgramming in LOGic

@item PROM
Partial Read Only Memory (ROM), "P-ROM" 

@item PROM
Programmable Read Only Memory (ROM, IC)

@item PROMATS
PROgrammable Magnetic Tape System

@item PROPAL
PROgrammed PAL

@item PROS
??? [protocol]

@item PROTEL
PRocedure Oriented Type Enforcing Language

@item PRPQ
Programming Request for Price Quotation

@item PRS
Pattern-Recognition System (PR)

@item PRSM
Processor Resource/System Manager (IBM)

@item PRT
Portable Remote Terminal

@item PRT
Portal RunTime (SAP, EP)

@item PRT
Program Reference Table

@item PRTM
Printing Response Time Monitor

@item PS
Port Selector (SATA)

@item PS
PostScript (Adobe, PDL, printing)

@item PS
Power Supply

@item PS
Privilege Service (DCE)

@item PS
Process Status (Unix)

@item PS2
Personal System /2, "PS/2" 

@item PSA
Python Software Activity (Python)

@item PSAP
Presentation Service Access Point (OSI, OSI/RM, SAP)

@item PSB
Processor System Bus (Intel, FSB)

@item PSB
Program Specification Block (IBM)

@item PSC
Pittsburgh Supercomputing Center (org., USA)

@item PSCNET
Pittsburgh Supercomputing Center NETwork (network, USA), "PSCnet"

@item PSD
Printer Sharing Device

@item PSD
Programmer's Supplementary Documents (BSD, Unix)

@item PSDC
Public Switched Digital Capability

@item PSDN
Packet-Switching Data Network

@item PSDS
Public-Switched Digital Service

@item PSE
Packet Switch Exchange

@item PSE
Port Switched Ethernet (Bytex, VLAN, ethernet)

@item PSES
P-bit Severely Errored Seconds (DS3/E3, BIT)

@item PSF
Permanent Swap File

@item PSF
Print Services Facility (IBM)

@item PSF
Python Software Foundation (org., Python)

@item PSG
Personal Systems Group (HP)

@item PSI
Performance Systems International, inc.

@item PSI
Published Subject Indicator (XTM)

@item PSID
Presentation Space IDentifier (IBM)

@item PSIPU
PostScript - Intelligent Processing Unit (Canon, Adobe, CLC), "PS-IPU"

@item PSIU
Packet Switch Interface Unit

@item PSK
Phase Shift Keying (telecommunication)

@item PSK
Pre-Shared Key (cryptography, PSS)

@item PSL
PD Service Lage (Haendler)

@item PSL
Public Software Library

@item PSM
Persistent Storage Manager (Maxtor)

@item PSM
Persistent Stored Modules (SQL)

@item PSM
Personal Security Manager (Mozilla, Internet, cryptography)

@item PSM
Personal Software Marketing (IBM)

@item PSM
Platform Specific Model (MDA)

@item PSN
Packet / Public Switched Network

@item PSN
Packet Sequence Number (OLSR)

@item PSN
Packet Switch Node (ARPANET, MILNET)

@item PSNR
Peak Signal to Noise Ratio

@item PSOM
Persistency framework in SOMobjects (IBM, DSOM)

@item PSOS
Provably Secure Operating System (OS)

@item PSP
Personal Software Products (IBM)

@item PSP
PlayStation Portable (Sony)

@item PSP
Program Segment Prefix (DOS)

@item PSP
ProjektStrukturPlan

@item PSPDN
Packet Switched Public Data Network (IN)

@item PSR
Phase Shift Register (IC)

@item PSR
Program Support Representative

@item PSRG
Privacy and Security Research Group (IRTF)

@item PSRO
Professional Standards Review Organization

@item PSS
Packet Switch Services / Stream

@item PSS
Pre-Shared Secret (cryptography, PSK, WLAN)

@item PSSF
Personal System Support Family (IBM)

@item PST
Pacific Standard Time [-0800] (TZ, PDT, USA)

@item PSTN
Public Switched Telephone Network (IN)

@item PSU
Portable Storage Unit

@item PSU
Primary Sampling Unit

@item PSU
Program Storage Unit

@item PSW
Program Status Word

@item PT
Pass Through (HTTPD, Apache)

@item PT
Payload Type (ATM)

@item PTAL
Payment Transaction Application Layer (Internet, banking)

@item PTAT
Private Trans-Atlantic Telecommunications

@item PTB
Physikalisch-Technische Bundesanstalt (org.)

@item PTC
Pacific Telecommunications Council (org.)

@item PTC
Parallel Test Component (ISO 9646-3, TTCN)

@item PTC
Patches Thoughtfully Considered (slang, Cygwin, PGA)

@item PTD
Parallel Transfer Disk / Drive

@item PTE
Packet Transport Equipment

@item PTE
Page Table Entry

@item PTE
Path Terminating Equipment (SONET)

@item PTERM
Physical TERMinal (IBM), "PTerm"

@item PTF
Program Temporary Fix (IBM)

@item PTH
Plated-Through-Hole

@item PTI
Payload Type Identifier (ATM, PT)

@item PTI
Polskie Towarzystwo Informatyczne (org., Poland)

@item PTK
Pairwise Transient Key (RSN, cryptography)

@item PTM
Packet Transfer Mode (ATM)

@item PTMSC
Point-To-Multipoint Service Center (GPRS, mobile-systems, Multicast), "PTM-SC"

@item PTO
Patent and Trademark Office (org., USA)

@item PTOCA
Presentation Text Object Content Architecture (IBM, MO:DCA)

@item PTOS
Paper Tape Operating System (OS)

@item PTP
Paper Tape Punch

@item PTP
Picture Transfer Protocol (PIMA 15740)

@item PTR
Paper Tape Reader

@item PTSS
People's Time Sharing System (OS; CDC 6600)

@item PTT
Postes, Telegraphe et Telephone (org., Switzerland)

@item PTTP
Point-to-PoinT Tunneling Protocol

@item PTW
Primary Translation Word

@item PTY
Pseudo-Terminal driver

@item PU
Physical Unit (NAU)

@item PU
Power Unit

@item PU
Processing Unit

@item PUA
Profiling User Agent

@item PUB
Physical Unit Block

@item PUC
Peripheral Unit Controller

@item PUC
Public Utilities Commission

@item PUCP
Physical Unit Control Point (IBM, SNA)

@item PUFFT
Purdue University Fast FORTRAN compiler (FORTRAN)

@item PUID
Physical Unit IDentifier (IBM)

@item PUK
Personal / PIN Unblocking Key (PIN)

@item PUMA
Power User's Macintosh Association (org., Apple)

@item PUMA
Processor Upgradable Modular Architecture

@item PUMA
Programmable Universal Micro Accelerator

@item PUMS
Physical Unit Management Services

@item PUP
PARC Universal packet Protocol (PARC)

@item PUP
Product UPgrade (MS)

@item PURL
Persistent Uniform Resource Locator (URL, WWW)

@item PUT
Program Update Tape

@item PV
Physical Volume (LVM, HDD)

@item PVA
Packetized Video Audio

@item PVA
Patterned Vertical Alignment (LCD, Sun, Samsung, MVA)

@item PVC
Permanent Virtual Circuit (SVC)

@item PVC
Permanent Virtual Circuit / Channel / Connection (ATM)

@item PVCC
Permanent Virtual Channel Connection (ATM)

@item PVCS
Polytron Version Control System

@item PVD
Primary Volume Descriptor (CD, IS 9660)

@item PVFS
Parallel Virtual File System

@item PVITL
Program-Variation-In-The-Large (SCM)

@item PVITS
Program-Variation-In-The-Small (SCM)

@item PVM
Parallel Virtual Machine (SMP, Cluster)

@item PVN
Private Virtual Network

@item PVP
Packet Video Protocol

@item PVPC
Permanent Virtual Path Connection (ATM)

@item PWB
Printer Wire Board

@item PWB
Programmers Work Bench (MS)

@item PWD
Print Working Directory (Unix)

@item PWG
Printer Working Group (org., IPP, printing)

@item PWM
Pulse Width Modulation (DVD)

@item PWN
Peacenet World News

@item PWP
Phase Wobble Pre-pit (DVD)

@item PWSCS
Programmable WorkStation Communication Services

@item PWV
Pulse-Wave Velocity

@item PXE
Preboot eXecution Environment (Intel)

@item PY
Person Years

@item PZDF
Phil Zimmermann Defense Fund (PGP)

@item PZE
PersonalZeitErfassung

@end table