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random-access memory (RAM) — A type of internal memory
used for the temporary storage of information. The contents
of
RAM can be altered, allowing information stored there to
be processed. Unlike read-only memory, information in
RAM
is usually lost when power is turned off. For this reason,
information in
RAM must be saved on a storage device
before the computer is turned off. Also called main memory
and system memory.
read — To access information from a storage device.
read-only memory (
ROM) — A type of internal memory that
contains permanent instructions for your computer. The
contents of
ROM cannot be altered. For this reason,
essential instructions are permanently stored in
ROM.
These instructions, such as those that execute the self-test,
are not lost when the computer is turned off.
resolution — The contrast between the display and the
background on a screen.
ROM — See read-only memory.
self-test — An automatic check the computer performs
every time it is turned on.
set up — See configure.
software — Computer programs, usually supplied on
floppies or on
ROM. Contrast with hardware.
system board — An internal circuit board that holds the
integrated circuits for the microprocessor, memory, and
clock in your computer.
working copy — A copy of a floppy that is used in
day-to-day operations while the original is kept in storage.
This term also can mean a floppy that has both an
operating system and an application on it.
Glossary
Glossary 13