Glossary–10
6400 Line Matrix Printers Setup Guide, Cabinet and Pedestal Models
pitch The number of text characters printed per horizontal inch.
Specified in characters per inch or 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.)
point A unit of length in printing and typography, used to specify type
sizes, heights of font characters, etc. There are 72 points in a
vertical inch; thus, one point equals 1/72 inch, or approximately
0.0139 inch. Some examples of point sizes are:
This is 8 point type.
This manual is printed in 11 point type. This is 14 point
type.
POR Power On Reset.
port A channel used for receiving data from or transmitting data to one
or more external devices.
portrait Printed parallel to the paper motion.
print mode Font.
proportion, character See character proportion.
proportional See font, proportional.
protocol The rules and conventions that govern communication between a
printer and a host computer. A protocol includes codes for
printing text and graphics and codes instructing the printer to
perform special operations. (See also compatibility and
emulation.)
R
RAM Random Access Memory. Can be read from or written to at any
time. RAM is volatile: Whatever information is in RAM is lost
when power is removed or interrupted.
RD Receive Data.
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