PAC (Pin Array Cartridge)
PARD (Periodic and Random Deviation)
PCI (Peripheral Component Interconnect)
PCL (Printer Control Language)
PCMCIA (Personal Memory Card International Assocation)
PDL (Page Description Language)
PFA (Predictive Failure Analysis)
PGA (Pin Grid Array)
PIIX (PCI ISA IDE Xcelerator) chips
PIO (Programmed I/O)
PJL (Printer Job Language)
PLGA (Plastic Land Grid Array)
PnP (Plug and Play)
POST (power on self test)
PPA (Printing Performance Architecture)
PPD (PostScript Printer Description)
PPGA (Plastic Pin Grid Array)
PPI (Programmable Peripheral Interface)
PQFP (Plastic Quad Flat Pack)
PRI (Primary Rate Interface)
PRML (Partial-Response, Maximum-Likelihood)
PSK (phase-shift keying)
PSTN (Public Switched Telephone Network)
PSU (power supply unit)