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BSC. Binary synchronous communications.
buffer. (1) An area of storage that is temporarily reserved for
use in performing an input/output operation, into which data is
read or from which data is written. Synonymous with I/O area.
(2) A portion of storage for temporarily holding input or output
data.
bus. One or more conductors used for transmitting signals or
power.
byte. (1) A sequence of eight adjacent binary digits that are
operated upon as a unit. (2) A binary character operated upon
as a unit. (3) The representation of a character.
C. Celsius.
capacitor. An electronic circuit component that stores an electric
charge.
Cartesian coordinates. A system of coordinates for locating a
point on a plane by its distance from each of two intersecting
lines, or in space by its distance from each of three mutually
perpendicular planes.
CAS. Column address strobe.
cathode ray tube (CRT). A vacuum tube in which a stream of
electrons is projected onto a fluorescent screen producing a
luminous spot. The location of the spot call be controlled.
cathode ray tube display (CRT display). (1) A CRT used for
displaying data. For example, the electron beam can be controlled
to form alphanumeric data by use of a dot matrix.
(2) Synonymous with monitor.
CCITT. International Telegraph and Telephone Consultative
Committee.
Celsius (C). A temperature scale. Contrast with Fahrenheit (F).
central processing unit (CPU). Term for processing unit.
Glossary-5
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