PSW - Processor Status Word

PSW - Program Status Word

PT - Payload Type

PT - Page Table

PTD - Parallel Transfer Disk Drive

PTE - Path - Terminating Equipment

PTF - Problem Trouble Fix

PTI - Payload Type Identifier

PTM - Project Time Management

PTT - "Postal

PU - Physical Unit

PUB - Publication

PUN - Physical Unit Number

PUNI - Public User Network Interface

PUP - PARC Universal Packet

PUS - Processor Upgrade Socket

PUSHA - Push All

PUSHF - Push Flags

PV - Parameter Value

PVC - Permanent Virtual Communication

PVC - Permanent Virtual Circuit

PVM - Parallel Virtual Machine

PVMD - Parallel Virtual Machine Daemon

PVP - Parallel Vector Processing

PVS - Parallel Visualization Server