P
PAL
Phase alternating line. Describes the color phase change in a PAL color signal. PAL is a European color TV system featuring 625 lines per frame, 50 fields per second and a 4.43361875- MHz sub-carrier. Used mainly in Europe, China, Malaysia, Australia, New Zealand, the Middle East and parts of Africa.
PCI
Peripheral Component Interconnect. A personal computer local bus designed by Intel, which runs at 33 MHz and supports Plug and Play.
PCI Express
An emerging (2004/2005) standard for high-speed graphics, likely to result in a 20 % boost over 2003-era AGP 8x performance.
PC reset relay
The PC reset relay is a component of the watchdog installed on Euresys frame grabbers. It is closed when the PC has to be reset.
Pulse-code modulation
It is a digital representation of an analog signal in a numeric code, usually in binary code. This is achieved by sampling the signal at a regular interval and then convert it into a digital signal.