Appendix C

 

P

PA

Program Attention. Used in applications programs.

PAL

Programmable Array Logic

parity (check)

Parity checking is the addition of non-data bits to

 

data, resulting in the number of 1 bits being either

 

always even or always odd. Parity is used to detect

 

transmission errors. Parity represents the value in

 

the check digit of the received or transmitted data.

parsing

Parsing is the process of separating a programming

 

statement into basic units that can be translated into

 

machine instructions. A printer can recover from an

 

erroneous code sequence by performing as much of

 

the function as possible or, parsing the valid

 

parameter from the invalid.

PC

Personal Computer.

PCB

Printed Circuit Board. A PCB is an insulating board

 

on which circuit paths have been printed or etched.

PCBA

Printed Circuit Board Assembly. A PCBA is a PCB

 

that has all of the electrical and mechanical

 

components (resistors, capacitors, ICs, sockets, etc.)

 

mounted on it.

PGL

Printronix Graphics Language. The software version

 

of the old hardware based IGP that is used in the

 

Printronix PSA line of printers. It provides the same

 

forms and barcode generation capabilities as the

 

IGP.

PI

Paper Instruction: A signal from the host with the

 

same timing and polarity as the data lines.

pica

A name indicating a monospaced font with a pitch of

 

10 cpi and usually a 12 point height. Pica is used in

 

typography as a unit of measurement equal to 1/6

 

inch.

pin configuration

Establishes the physical attachment and protocol

 

conversion connections for the host interface.

pitch

The number of text characters printed per horizontal

 

inch. Specified in characters per inch (cpi).

pixel

Derived from picture (PIX) ELement. The smallest

 

displayable picture element on a video monitor or

 

printable unit. In printing, a pixel is a dot.

PMPP

Physical Maximum Print Position. The longest line

 

the printer is capable of printing. This differs from

 

MPP in that the printer may be capable of printing

 

lines 132 characters wide (PMPP), but the print job is

 

only 80 characters wide (MPP). (See also MPP.)

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Printronix ANSI Printer manual Pal, Pcba, Pgl, Pmpp