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