P&D - Plug & Display
P&M - Personalization and Membership
P&P - Plug-and-Play
P/F - Poll/Final
P2P - Peer-to-Peer
P3P - Platform for Privacy Preferences
PABX - Private Automatic Branch eXchange
PAC - Perceptual Audio Coder™
PACE - Palm Application Compatibility Environment
PACE - Priority Access Control Enable
PACE - Professional Association of Computer Educators
PACS - Philadelphia Area Computer Society
PACS - Picture Archiving and Communication System
PACT - Palo Alto Collaborative Testbed
PACUG - Pasco Area Computer User Group
PAD - Packet Assembler/Disassembler
PAD - Protocol Anomaly Detection
PADS - Processing Arbitrary Data Streams
PAE - Physical Address Extension
PAG - Patent Advisory Group
PAIR - Policy Analysis of Internet Routing
PAL - Performance and Architecture Lab
PAL - Phase Alternate Line
PAL - Privileged Architecture Library
PAL - Processor Abstraction Layer
PAL - Programmable Array Logic
PAM - Pluggable Authentication Module
PAM - Programmable Active Memory
PAM - Pulse Amplitude Modulation
PAMS - Parallel Applications Management System
PAMS - Process Activation and Message Support
PAN - Personal Area Network
PAP - Password Authentication Protocol
PAP - Push Access Protocol
PAR - Peak to Average Ratio
PARC - Palo Alto Research Center
PARS - Personal Audio Response System
PARTIES - Protected Area Run Time Interface Extension Services
PAS - Personal Access System
PASC - Portable Application Standards Committee
PASS - Passport Advantage Solution Selling
PASS - Professional Association for SQL Server
PAT - Page Attribute Table
PAT - Performance Acceleration Technology
PAT - Port Address Translation
PAUSE - Perl Authors' Upload SErver
PaWS - PHP and Web Standards
PB - PetaByte
PBC - Pipeline Burst Cache
PBCS - Policy-Based Computing Services
PBI - Peripheral Bus Interface
PBIS - Pacific Bell Internet Services
PBM - PCI Backplane Manager
PBM - Portable BitMap
PBN - Peripheral Border Node
PBNM - Policy-Based Network Management
PBOT - Physical Beginning Of Tape
PBP - Personal Basis Profile
PBS - Public Broadcasting System
PBX - Private Branch eXchange
PC - Personal Computer
PC - Personal Computing
PC - Pigeon Cluster
PC - Precision Control
PC - Program Control
PCA - Personal Client Architecture
PCA - Policy Certification Authority
PCB - Printed Circuit Board
PCC - Personal Call Collector
PCC - Protection Communication Channel
PCD - Personal Computing Division
PCD - Plotter Characterization Data
PCF - Packet Control Function
PCF - Primary Control Field
PCI - Peripheral Component Interconnect
PCI - Peripheral Component Interface
PCI - Protocol Control Information
PCIM - Policy Core Information Model
PCJ - PostConfirmation Journal
PCL - Printer Control Language
PCM - Pulse Code Modulation
PCMCIA - Personal Computer Memory Card International Association
PCN - Personal Communications Network
PCP - Performance Co-Pilot
PCR - Peak Cell Rate
PCS - Personal Communications Service
PCS - Personal Connectivity Solutions
PCS - Philippine Computer Society
PCS - Physical Code Sublayer
PCS - Port Concentrator Switch
PCS - Prescott Computer Society
PCS - Profile Connection Space
PCT - Private Communications Technology
PCT - Program Comprehension Tool
PCT - Program Control Table
PCTE - Portable Common Tool Environment
PCU - Packet Control Unit
PCUGR - PC Users' Group of the Redwoods
PCV - Path Coding Violation
PCX - PiCture eXchange