IBM XT 5160 Technical Reference page 377

channel. A path along which signals can be sent; for example,
data channel, output channel.
character generator. (1) In computer graphics, a functional unit
that converts the coded representation of a graphic character into
the shape of the character for display. (2) In word processing,
the means within equipment for generating visual characters or
symbols from coded data.
character set. (1) A finite set of different characters upon which
agreement has been reached and that is considered complete for
some purpose. (2) A set of unique representations called
characters. (3) A defined collection of characters.
characters per second (cps). A standard unit of measurement for
the speed at which a printer prints.
check key. A group of characters, derived from and appended to
a data item, that can be used to detect errors in the data item
during processing.
clipping. In computer graphics, removing parts of a display image
that lie outside a window.
closed circuit. A continuous unbroken circuit; that is, one in
which current can flow. Contrast with open circuit.
CMOS. Complementary metal oxide semiconductor.
code. ( 1) A set of unambiguous rules specifying the manner in
which data may be represented in a discrete form. Synonymous
with coding scheme. (2) A set of items, such as abbreviations,
representing the members of another set. (3) To represent data
or a computer program in a symbolic form that can be accepted
by a data processor. (4) Loosely, one or more computer
programs, or part of a computer program.
coding scheme. Synonym for code.
collector. An element in a transistor toward which current flows.
color cone. An arrangement of the visible colors on the surface
of a double-ended cone where lightness varies along the axis of
Glossary-6