CCITT. 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
r".,
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
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