Engineering Abbreviations
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

'Pa' to 'Pl, 'Pm' to 'Pq', 'Pr' to 'Pz'

p - pico (10-12), peta (1015)
PABX - private automatic branch exchange
PAD - packet assembler/disassembler
PAL - Programmable Array Logic [PLD manufacturers]
PAL - phase alternation by line
PAL-M - phase alternation by line-modified
PAM - pulse-amplitude modulation
PAMA - pulse-address multiple access
PAN - Personal Area Network
p/a r - peak-to-average ratio
PAR - performance analysis and review
PARAMP - parametric amplifier
par - meter peak-to-average ratio meter
PAX - private automatic exchange
Pb - lead
PBA - Physical Block Address
PBER - pseudo-bit-error-ratio
PBGA - Plastic Ball Grid Array [PBGA description]
PBIT - Power-up BIT
PBX - private branch exchange
PC104 - Embedded PC card [PC-104 Description]
PC - Personal Computer, carrier power (of a radio transmitter)
PCB - printed circuit board, power circuit breaker [PWB Terms]
PCB - polychlorinated biphenyl
PCC - Plastic Chip Carrier
PCIB - Protocol Control Information Bus [IEEE P1386.1]
PCI - Peripheral Component Interface [Computer Bus]
PCIe - Peripheral Component Interface Express [PCIe Bus]
PCM - pulse-code modulation [PCM code definitions]
PCM - Phase-Change Memory [ PCM IC Manufacturers]
PCM - plug compatible module, process control module
PCMCIA - Personal Computer Memory Card International Association
PCN - Popcorn Noise [out-of-date-term]
PCS - Personal Communications Services
PCS - plastic-clad silica [fiber]
PCSR - parallel channels signaling rate
PD - photodetector
PD - Pulse Duration [PD definition]
PDF - Portable Document Format
PDH - Plesiochronous Digital Hierarchy
PDM - pulse-duration modulation, pulse delta modulation
PDN - Power Distribution Network
PDN - public data network
PDP - Programmed Data Processor
PDS - power distribution system, protected distribution system
PDS - program data source
PDT - programmable data terminal
PDU - protocol data unit [Protocol definitions]
PE - phase-encoded [recording]
PEP - peak envelope power (radio transmitter)
pF - picofarad, power factor
PFC - Power Factor Correction [PFC Converters]
PFM - pulse-frequency modulation
PGA - Pin Grid Array [PGA Graphic]
PGA - Programmable Gain Amplifier
PHEMT - pseudomorphic high electron mobility transistor
PHY - Physical Layer
PI - 3.1415927, protection interval
PIB - Processor in a Box
PIC - plastic insulated cable
PIN - Part Identifying Number
ping - packet Internet groper
PIR - Passive IR [Infrared]
PISA - PC Expansion Bus [PCI + ISA], [Card Manufacturers]
PIV - Peak Inverse Voltage
PLA - programmable logic array
PLC - Power Line Communication
PLC - Printer Control Language [HP Printer Language]
PLC - Programmable Logic Controller [PLC Manufacturers]
PLCC - Plastic Leaded Chip Carrier [Package Types]
PLD - Programmable Logic Device [PLD IC Manufacturers]
PLL - phase-locked loop
PLMR - Private Land Mobile Radio
PLN - private line network
PL/I - programming language 1
PLR - pulse link repeater
PLS - physical signaling sub-layer
PC motherboard

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