Glossary 3
CD-ROM reader
A computer-controlled device that reads high-capacity optical discs
and sends the output to the computer.
clock
Electronic timer used to synchronize computer operations.
CMOS
Complementary Metal Oxide Semiconductor. A chip that contains
nonvolatile memory in the Versa. CMOS is backed up by an internal
lithium battery that preserves clock/calendar data and system con-
figuration parameters stored in CMOS.
cold boot
Process of starting up the computer by turning on the power. If
power is already on, the process means to turn off the computer
and turn it on again. A cold boot reinitializes all devices.
crt
Cathode-Ray Tube. A type of display screen used in desktop
monitors. It forms the screen image using tiny dots called pixels.
See also LCD.
cursor
A movable image on the display screen that indicates where the
next entered data appears.
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