IBM QMS 4525 - Manual (Page 162)

Page Description
Language (PDL)
QMS 4525 Print System User's Guide G-12
portraits of people, which are usually vertical in format. Printing across the
length of a page is called landscape orientation printing. The word
“landscape” is derived from pictures of the landscape, which are usually
horizontal in format.
Page Description Language (PDL)
A programming language, such as PostScript, that is used to describe
output to a printer or a computer monitor.
Paper Jam
See jam.
Paper Path
The path the paper follows in its journey through the printer. It begins at the
paper cassette pick-up point and ends where it exits the printer.
Parallel
A data transmission technique that sends each bit simultaneously over
separate lines. It is normally used to send 1 byte (8 bits) at a time between
computers and local peripheral devices.
Parallel Interface
A connection between the computer and the printer in which character
information is transferred simultaneously over a path through multiple lines.
Parallel configuration data transfer is generally faster than serial
configuration data transfer. See also
serial interface.
Parity, Parity Check
The addition of overhead bits to ensure that the total number of 1s in a
grouping of bits is either always even (for even parity) or always odd (for
odd parity). This permits detection of single errors. It may be applied to
characters, transmission blocks, or any convenient bit grouping.
Persistent
Referring to printer parameters which remain in the printer's memory after
you turn off the printer. They appear each time you turn on the printer.
Pin
A slender prong on a male connector. See also connector.
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