IBM 5170 Technical Reference page 408

CCIIT. International Telegraph and Telephone Consultative
Committee.
Celsius (C). A temperature scale. Contrast with Fahrenheit (F).
central processing unit (CPU). Term for processing unit.
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.
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.
Glossary-6