Setup guide

Glossary–8
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.
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.
port A channel used for receiving data from or transmitting data to one
or more external devices.
portrait Printed parallel to the short edge of a page.
Postnet A bar code standard defined by the U. S. Postal Service.
print mode Font.
proportion, character See character proportion.
proportional See font, proportional.
protocol A set of rules or conventions governing the exchange of
information between computer systems, or between a printer and
a host computer. For computer printers, a protocol is the coding
convention used to convey and print data. A printer protocol
includes codes for printing text and graphics, as well as codes
instructing the printer to perform special operations, and
machine-to-machine communication codes.
See also compatibility and emulation.
R
RAM Acronym for random-access memory. Also called “main memory”
or “working memory.” RAM is the active memory of a printer,
into which programs are loaded. This memory can be read from
or written to at any time. RAM is also termed “volatile” because
whatever information is in RAM is lost when power is turned off
or interrupted.
See also NVRAM and ROM.