-- P ---

P2P

Peer to Peer [net]

PA

Precision Architecture (HP)

PABX

Private Automatic Branch eXchange

PAC

Privilege Attribute Certificate (DCE)

PACE

Priority Access Control Enabled (3Com, ethernet)

PACER

Public Access to Court Electronic Records

PACS

Picture Archiving and Communications Systems

PACS

Public-Access Computing Systems

PACT

Partnership in Advanced Computing Technologies (org. UK)

PACT

Personal Air Communications Technology, "pACT"

PACT

Production Analyses Control Technique

PACX

Private Automatic Computer eXchange

PAD

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

PAEB

Pan American EDIFACT Board (UN/EDIFACT)

PAEB

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

PAI

Process After Input (R/3)

PAL

Paradox Application Language (Borland, DB)

PAL

Phase Alternating Line

PAL

Privileged Architecture Library (DEC, Alpha)

PAL

Programmable Array Logic

PAM

Paging Area Memory

PAM

Pluggable Authentication Module (Linux, LISA)

PAM

Primary Access Method (BS2000)

PAM

Programmable Attribut Maps (DRAM, PCI)

PAM

Pulse Amplification Modulation

PAML

Publicly Accessible Mailing Lists (Internet, BBS)

PAN

Personal Account Number

PANIX

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

PAP

Password Authentication Protocol (RFC 1334)

PAP

Printer Access Protocol (AppleTalk)

PAP

ProgrammAblaufPlan (DIN 66001)

PAR

Positive Acknowledgement with Retransmission [protocols]

PAR

Project Authorization Request (IEEE)

PARC

Palo Alto Research Center (org., USA, Xerox)

PARLE

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

PARTS

Parts Assembly and Reuse Tool Set (Visual Smalltalk)

PAS

Publicly Available Specifications (ISO)

PAS2

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

PASC

Portable Application Standards Committee (org., IEEE)

PAT

Port and Adress Translation (IOS, Cisco, LAN, IP)

PAX

Pixel Adressing eXtensions (Intel, RISC, CPU)

PAX

Portable Archive eXchange (SCO, Unix)

PAX

Private Automatic eXchange

PB

Pipeline Burst [cache]

PBC

Peripheral Bus Computer

PBE

Prompt By Example

PBI

Pacific Bell Internet (ISP)

PBI

Phone Based Interface

PBM

Play By Mail [game]

PBO

Process Before Output (R/3)

PBX

Private Branch eXchange (Nebenstellenanlage)

PC

Personal Computer

PC

Printed Circuit (IC)

PC

Priority Control

PC

Protocol Control

PC

Punched Card

PC97

Personal Computer 97 (MS), "PC 97"

PCA

Policy Certification Authority (DFN, PGP)

PCA

Power Calibration Area (CD)

PCAT

Personal Computer - Advanced Technology, "PC-AT"

PCB

Printed Circuit Board

PCB

Process Control Block (BS2000)

PCB

Protocol Control Block (TCP)

PCC

Portable C Compiler

PCCA

Personal Computer Communications Associations (org., USA)

PCD

Photo CD (Kodak, CD)

PCD

Process Control Device

PCDA

Program Controlled Data Acquisition

PCDOS

Personal Computer DOS (OS), "PC-DOS"

PCERT

Purdue Computer Emergency Response Team

PCF

Portable Compiled Font

PCH

Paging CHannel (GSM, CCCH)

PCI

Peripheral Component Interconnect

PCI

Protocol Control Information (OSI, ETSI)

PCIS

Portable Common Interface Set

PCIXF

Personal Computer Intergrated eXchange Format (OS/2), "PC/IXF"

PCL

Portable Common LOOPS (CLOS)

PCL

Printer Control Language (HP)

PCL

Programmable Command Language (CMU, DEC, TOPS)

PCM

Personal Computer Manufacturer

PCM

Physical Connection Management (FDDI, SMT)

PCM

Plug Compatible Machine

PCM

Pulse Coded Modulation

PCMCIA

People Can't Memorize Computer Industries Acronyms (slang)

PCMCIA

Personal Computer Memory Card International Association (org.)

PCMS

Project & Configuration Management System

PCMT

Personal Computer Message Terminal

PCN

Personal Communications Network

PCN

Public Communications Network (Mobile Systems)

PCNFS

Personal Computer Network File System

PCO

Points of Control and Observation (IUT)

PCPC

Personal Computers Peripheral Corporation

PCR

Peak Cell Rate (UNI, ATM, SCR)

PCR

Processor Configuration Register (Motorola, CPU)

PCR

Program Clock Reference

PCS

Personal Communication System (Sony, Panasonic, Motorola)

PCS

Personal Communications Services

PCS

Programmable Communications Subsystem

PCS

Punched Card System (PC)

PCSA

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

PCSD

Printer Control Sequence Description

PCSI

Pacific Communication Sciences, Inc. (manufacturer)

PCT

Private Communication Technology (Internet, MS, Visa)

PCT

Probe Control Table (FFST/2)

PCTCP

Personal Computer/Transmission Control Protocol, "PC/TCP"

PCTE

Portable Common Tool Environment (CASE, ESPRIT)

PCV

P-bit Coding Violation [error event] (DS3/E3)

PCV

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

PCXT

Personal Computer - eXtended Technology, "PC-XT"

PD

Packetization Delay

PD

Public DOMAIN

PDA

Personal Digital Assistent

PDC

Power Disk Cartridge (ECMA)

PDC

Primary DOMAIN Controller (MS, Windows NT)

PDC

PROLOG Development Center (manufacturer, Denmark, PROLOG)

PDE

Partial Differential Equation

PDES

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

PDF

Portable Document Format (Adobe)

PDF

Program Development Facility (IBM)

PDH

Plesiochronous Digital Hierarchy (ATM)

PDI

Power and Data Interface

PDL

Page / Program Description / Design Language

PDL

Program Development Language

PDM

Program Development Manager (IBM, ADT)

PDN

Programmer's Distribution Network (Fido)

PDN

Public Data Network (Mobile Systems)

PDO

Portable Distributed Objects (NeXT)

PDOS

Parallel and Distributed Operating System (OS, MIT)

PDP

Parallel Distributed Processing (AI)

PDP

Peripheral Data Processing

PDP

Plasma Display Panel

PDP

Programmable Data Processor (DEC)

PDQ

Parallel Data Query (Informix, DB)

PDS

Partitioned Data Set

PDS

Portable Display Shell

PDS

Processor Direct Slot / Socket (Motorola)

PDS

Professional Development System (MS)

PDS

Public DOMAIN Software (PD)

PDSP

Peripheral Data Storage Processor

PDSS

Post Development and Software Support

PDT

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

PDTR

Proposed Draft Technical Report

PDU

Packet Data Unit

PDU

Product Development Unit

PDU

Protocol Data Unit (OSI)

PDV

Photorealistic Data Visualization

PDV

ProzessDatenVerarbeitung

PE

Phase Encoding

PE

Portable eXecutable (Win32)

PE

Processing Element (MPP)

PEA

Pocket Ethernet Adapter (LAN, ethernet)

PEARL

Process and Experiment Automation Realtime Language

PEC

Program Execution Control (IBM, OS/2)

PEDS

Planning, programming, budget, and execution Electronic Delivery System

PEEK

Partners Early Experience Kit (Taligent)

PEL

Picture ELement

PEM

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

PEN

Public Education Network

PEP

Packetized Ensemble Protocol (Telebit)

PER

Program Event Recording

PERL

Pathologically Eclectic Rubbish Lister (slang)

PERL

Practical Extraction and Report Language

PERM

Pre-Embossed Rigid Magnetic (Sony, HDD)

PERMIS

PERManentes InventurabwicklungsSystem (MBAG)

PEROM

Programmable Erasable Read Only Memory (IC)

PERT

Program Evaluation / Evolution and Review Technique

PES

P-bit Errored Seconds (DS3/E3)

PES

Photo-Electric Scanning (DTP)

PES

Programmed Electrical Stimulation

PES

Proposed Encryption Standard

PEST

Parameter Estimation by Sequential Testing

PET

Personal Electronic Translator

PET

Print Enhancement Technology (Compaq)

PET

Progressive Educational Technology

PEX

PHIGS Extension for X (X-Windows, PHIGS)

PFC

Protocol Field Compression (PPP)

PFK

Program Function Key

PFM

Printer Font Metrics (Adobe)

PFPU

Processor Frame Power Unit

PGA

Pin Grid Array (CPU)

PGC

Professional Graphics Controller

PGFNA

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

PGI

Parameter Group Identifier (SPDU)

PGP

Pretty Good Privacy

PGS

Program Generation System

PHIGS

Programmer's Hierarchical Interactive Graphics System

PHIGSPLUS

PHIGS Plus Lumiere and Surfaces (PHIGS), "PHIGS-PLUS"

PHIPS

Professional High-Resolution Image Processing System (CA)

PHUN

Phreakers and Hackers Underground Network (network)

PHY

PHYsical Layer Control (FDDI)

PI

Placement and Interconnect [system] (VLSI, MIT)

PIA

Peripheral Interface Adapter

PIA

Plug-In Administrator

PIC

Personal Intelligent Communicator

PIC

Point in Call (IN)

PIC

Primary Independent Carrier

PIC

Priority Interrupt Controller (IC)

PIC

Programmable Interrupt Controller

PICG

PCTE Interface Control Group (org., PCTE)

PICS

Platform for Internet Content Selection (org., Internet)

PICS

Plug-in Inventory Control System

PICS

Protocol Implementation Conformance Statements

PICSDCPR

PICS Detailed Continuing Property Record, "PICS/DCPR"

PICU

Priority Interrupt Control Unit

PID

Process IDentification number (Unix)

PID

Protocol IDentifier [governing connection types]

PIG

Psion Interest Group (Psion)

PIIX

PCI IDE/ISA Xcelerator (Intel IC)

PIM

Parallel Inference Machine (FGCS, AI)

PIM

Personal Information Manager

PIM

Protocol Independent Multicast

PIMB

PCTE Interface Management Board (org., PCTE)

PIMF

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

PIMS

Project Information Management System

PIN

Personal Identification Number (banking)

PIN

Processor Independent Netware (Novell, HP, DEC, Apple, Sun)

PINE

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

PINET

Physicians Information NETwork (network, USA)

PING

Packet InterNet Groper (ICMP, TCP/IP)

PIO

Parallel / Programmed Input/Output

PIOS

Personen, Institutionen, Objekte, Sachen (INPOL)

PIP

Packet Interface Port

PIP

Paper Impact Printing

PIP

Periphal Interchange Program

PIP

Peripheral Interchange Program

PIP

Personal Information Processor

PIP

Picture In Picture (Video)

PIP

Plug-In Protokoll (ZOC)

PIPS

Pattern Information Processing Systems

PIRA

Printing Industries Research Association (org.)

PISA

Portable InformationsSystem Architecture (DB, infodas)

PISABG

PISA/Business Graphics (PISA), "PISA/BG"

PISADB

PISA/Data Base (PISA, DB), "PISA/DB"

PISADD

PISA/Data Dictionary (PISA), "PISA/DD"

PISADK

PISA/ ??? (PISA), "PISA/DK"

PISAMP

PISA/Menue Processor (PISA), "PISA/MP"

PISANT

PISA/ ??? (PISA), "PISA/NT"

PISAPPS

PISA/ProduktionsPlanung und -Steuerungsystem (PISA), "PISA/PPS"

PISAQL

PISA/Query Language (PISA), "PISA/QL"

PISARG

PISA/Report Generator (PISA), "PISA/RG"

PISW

Process Interrupt Status Word (CPU, assembler)

PIT

Programmable Interval Timer

PITA

Pain In The Anatomy / As (slang, Usenet, IRC)

PIU

Path Information Unit (IBM, SNA)

PIU

Plug-In Unit

PIXIT

Protocol Implementation eXtra Information for Testing

PKCS

Public Key Cryptography Standards (org., USA, cryptography)

PKS

Polizeiliche KriminalStatistik (INPOL)

PL

Physical Layer (ISO, OSI)

PL1

Programming Language no. 1 (DEC), "PL/1"

PLA

Programmable Logic Array

PLATO

Programmed Logic for Automated Teaching Operations

PLB

Picture Level Benchmark (GPC)

PLBSI

Picture Level Benchmark Sample Implementation (GPC)

PLC

Programmable Logic Controller (IC)

PLCC

Plastic Leadless Chip Carrier

PLCP

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

PLD

Programmable Logic Device (IC)

PLDM

Power Line Disturbance Monitor

PLIP

Parallel Line Internet Protocol (IP), "PL/IP"

PLL

Phase Locked Loop

PLM

Programming Language for Microcomputers

PLMN

Public Land Mobile Network (Mobile Systems, GSM)

PLOU

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

PLP

Packet Layer Protocol (X.25)

PLP

Party Line Protocol

PLP

Presentation Level Protocol

PLS

Personal Library Systems (manufacturer)

PLS

PhysicaL Signaling

PLS

Programmable Logic Sequencer

PLV

Presentation Level Video (DVI, Intel)

PM

Performance Management

PM

Peripheral Module

PM

Physical Medium

PM

Presentation Manager (OS/2)

PMA

Physical Medium Attachment

PMA

Policy Management Architecture (Netmanage, Internet)

PMA

Program Memory Area (CD)

PMAC

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

PMAC

Peripheral Module Access Controller

PMC

Pseudo-Machine Code

PMD

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

PMDRAM

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

PME

Pattern Matching Engine

PMJI

Pardon Me for Jumping In (slang)

PMMU

Paged Memory Management Unit

PMOS

Positive-channel Metal Oxide Semiconductor (IC)

PMP

Point to MultiPoint (UNI)

PMP

Preventive Maintenance Package (AIX, IBM)

PMR

Poor Man's Routing

PMR

Problem Management Report (IBM)

PMS

Personal Mailing System

PMS

Processor Memory Switch

PMS

Project Management System

PMS

Public Message System

PMSP

Preliminary Message Security Protocol

PMU

PowerMeter Unit

PMW

Project Manager Workbench

PMX

Packet MultipleXer (MUX)

PMX

Presentation Manager for the X window system, "PM/X"

PNG

Portable Network Graphics [format] (RFC 2083)

PNNI

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

PNNI

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

PNP

Plug 'N Play

PNPN

Positive Negative Positive Negative [devices]

PNS

PeaceNet Sweden (network)

PNW

Personal NetWare (Novell, Netware)

POACH

PC-On-A-Chip (PC)

POC

Proof of Concept

POD

Plain Old Document [format]

PODA

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

PODA

Priority Orientated Demand Assignment (MAC, TDM)

POE

PowerOpen Association (Apple, IBM, Motorola, ..., org.)

POEM

Portable Object-orientated Entity Manager (SGML)

POEMS

Platinum Open Enterprise Management System

POEP

Primary Operand Execution Pipeline (Motorola, CPU), "pOEP"

POF

Plastic Optical Fiber (OWG)

POGO

Programmer-Oriented Graphics Operation

POH

Path OverHead (SONET)

POI

Path Overhead Indicator (SONET)

POI

Point Of Information

POI

Point Of Interaction (IN)

POL

Problem / Procedure / Process Oriented Language

POOL

Parallel Object Orientated Language (DOOM, OOP)

POP

Package for Online Programming

POP

Point Of Presence (Internet, ISP)

POP3

Post Office Protocol 3 (Internet, RFC 1939)

POR

Point Of Return (IN)

POR

Power-On Reset

POS

Primary Operating System (OS)

POS

Programmable Object Select

POSI

Promoting conference for OSI (Japan, org., conference)

POSIX

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

POST

Power-On Self-Test

POSYBL

PrOgramming SYstem for distriButed appLications

POTS

Plain Old Telephone System (slang, Usenet, IRC)

POV

Persistence of Vision (raytracing)

POWER

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

PP

Physical Partion (LVM)

PP

Physical Plane (IN)

PP

Pre-Processor

PPA

Parallel Port Adapter

PPC

PowerPC (Apple)

PPC

Program to Program Communication (Apple)

PPDS

Personal Printer Data Stream

PPDU

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

PPE

Packet Processing Engine (Hub)

PPGA

Plastic Pin Grid Array (CPU)

PPI

Parallel Port Interface

PPI

Pixels Per Inch

PPI

Programmable Peripheral Interface

PPID

Parent Process IDentification number (Unix)

PPL

Pcboard Programming Language (BBS)

PPL

Polymorphic Programming Language (Harvard, Xerox, PARC)

PPM

Pages Per Minute

PPM

Pulse Position Modulation

PPMS

Professional Productivity Management System

PPN

Project Programmer Number

PPN

Public Packet Switching

PPP

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

PPS

Packets Per Second

PPS

Parallel Processing System

PPS

ProduktionsPlanung und -Steuerung

PPS

Public Packet Switching [network]

PPSN

Public Packet-Switched Network

PPSU

Personal Printer Spooling Utility

PPTP

Point-to.Point Tunneling Protocol (MS, Ascend, IP)

PPU

Peripheral Processing Unit

PQET

Print Quality Enhancement Technology (Lexmark)

PQFP

Plastic Quad Flat Package (CPU)

PR

Packet Radio

PR

Pattern Recognition

PRACSA

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

PRAM

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

PRCS

Project Revision Control System

PREP

PowerPC REferenz Plattform (IBM, Apple), "PReP"

PREPNET

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

PRF

Problem Report Form (IBM)

PRI

Primary Rate Interface (ISDN)

PRIDE

PRofitable Information by DEsign (IRM)

PRISM

Parallel Reduced Instruction Set Multiprocessing

PRISM

PRogrammed Integrated System Maintenance

PRMD

PRivate Management DOMAIN (X.400, MHS)

PRML

Partial Response - Maximum Likelihood (HDD)

PRO

Precision RISC Organization (org.)

PROFIBUS

PROcess FIeld BUS

PROFS

PRofessional OFice System (IBM, VM)

PROLOG

PROgramming in LOGic

PROM

Partial Read Only Memory, "P-ROM"

PROM

Programmable Read Only Memory

PROMATS

PROgrammable Magnetic Tape System

PROPAL

PROgrammed PAL

PROS

??? [protocol]

PROTEL

PRocedure Oriented Type Enforcing Language

PRPQ

Programming Request for Price Quotation

PRS

Pattern-Recognition System (PR)

PRT

Portable Remote Terminal

PRT

Program Reference Table

PRTM

Printing Response Time Monitor

PS

PostScript (Adobe)

PS

Power Supply

PS

Privilege Service (DCE)

PS

Process Status (Unix)

PS2

Personal System /2, "PS/2"

PSAP

Presentation Service Access Point (OSI, OSI/RM, SAP)

PSB

Program Specification Block

PSC

Pittsburgh Supercomputing Center (org., USA)

PSCNET

Pittsburgh Supercomputing Center NETwork (network, USA), "PSCnet"

PSD

Printer Sharing Device

PSD

Programmer's Supplementary Documents (BSD, Unix)

PSDC

Public Switched Digital Capability

PSDN

Packet-Switching Data Network

PSDS

Public-Switched Digital Service

PSE

Packet Switch Exchange

PSE

Port Switched Ethernet (Bytex, VLAN, ethernet)

PSES

P-bit Severely Errored Seconds (DS3/E3)

PSF

Permanent Swap File

PSF

Print Services Facility (IBM)

PSI

Performance Systems International, inc.

PSID

Presentation Space IDentifier (IBM)

PSIPU

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

PSIU

Packet Switch Interface Unit

PSK

Phase Shift Keying (DFUE)

PSL

PD Service Lage (Haendler)

PSL

Public Software Library

PSM

Persistent Stored Modules (SQL)

PSM

Personal Software Marketing (IBM)

PSN

Packet / Public Switched Network

PSN

Packet Switch Node (ARPANET, MILNET)

PSOM

Persistency framework in SOMobjects (IBM, DSOM)

PSP

Personal Software Products (IBM)

PSP

Program Segment Prefix (DOS)

PSP

ProjektStrukturPlan

PSPDN

Packet Switched Public Data Network (IN)

PSR

Phase Shift Register

PSR

Program Support Representative

PSRG

Privacy and Security Research Group (IRTF)

PSRO

Professional Standards Review Organization

PSS

Packet Switch Services / Stream

PST

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

PSTN

Public Switched Telephone Network (IN)

PSU

Portable Storage Unit

PSU

Primary Sampling Unit

PSU

Program Storage Unit

PSW

Program Status Word

PT

Payload Type (ATM)

PTAL

Payment Transaction Application Layer (Internet, banking)

PTAT

Private Trans-Atlantic Telecommunications

PTB

Physikalisch-Technische Bundesanstalt (org.)

PTC

Pacific Telecommunications Council (org.)

PTD

Parallel Transfer Disk / Drive

PTE

Packet Transport Equipment

PTE

Path Terminating Equipment (SONET)

PTF

Program Temporary Fix (IBM)

PTI

Payload Type Identifer (ATM, PT)

PTM

Packet Transfer Mode (ATM)

PTO

Patent and Trademark Office (org., USA)

PTOCA

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

PTP

Paper Tape Punch

PTR

Paper Tape Reader

PTT

Postes, Telegraphe et Telephone (org., Switzerland)

PTW

Primary Translation Word

PTY

Pseudo-Terminal driver

PU

Physical Unit (NAU)

PU

Power Unit

PU

Processing Unit

PUA

Profiling User Agent

PUB

Physical Unit Block

PUC

Peripheral Unit Controller

PUC

Public Utilities Commission

PUCP

Physical Unit Control Point (IBM, SNA)

PUFFT

Purdue University Fast FORTRAN compiler (FORTRAN)

PUID

Physical Unit IDentifier (IBM)

PUMA

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

PUMA

Processor Upgradable Modular Architecture

PUMA

Programmable Universal Micro Accelerator

PUP

PARC Universal packet Protocol

PUT

Program Update Tape

PV

Physical Volume (LVM, HDD)

PVC

Permanent Virtual Circuit (SVC)

PVC

Permanent Virtual Circuit / Channel / Connection (ATM)

PVCC

Permanent Virtual Channel Connection (ATM)

PVCS

Polytron Version Control System

PVD

Primary Volume Descriptor (CD, IS 9660)

PVITL

Program-Variation-In-The-Large (SCM)

PVITS

Program-Variation-In-The-Small (SCM)

PVM

Parallel Virtual Machine

PVN

Private Virtual Network

PVP

Packet Video Protocol

PVPC

Permanent Virtual Path Connection (ATM)

PWB

Printer Wire Board

PWB

Programmers Work Bench (MS)

PWD

Print Working Directory (Unix)

PWM

Pulse Width Modulation

PWN

Peacenet World News

PWSCS

Programmable WorkStation Communication Services

PWV

Pulse-Wave Velocity

PY

Person Years

PZDF

Phil Zimmermann Defense Fund (PGP)

PZE

???

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