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RS-232C
A widely used, standard type of serial communication. You can
connect an RS-232C device to either of the computer's built-in
RS-232C serial ports.
Sector
A small section of a disk track (typically 512 bytes long) that
provides an address at which the computer can store and
retrieve data. See also
Self test
see Power-on diagnostics.
Serial
The type of communication that transmits data from a serial
interface to a serial device, one bit at a time, over a single wire.
See also Interface and Parallel.
Shadow RAM
The feature in your computer that automatically copies the
contents of the system, video, and any external BIOS ROMs
into the RAM area of memory to speed up processing.
SIMM
See Memory module.
Software
The collection of instructions (or programs) that tell your
computer hardware to perform the tasks and functions you
specify. See also Hardware and Program.
20 Glossary
Track.
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