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Main memory
The amount of memory in the computer below 1MB that is available
to your operating system and application programs-usually 640KB.
Also called base or conventional memory.
Math coprocessor
See
Coprocessor.
MB
Megabyte. A unit used to measure storage space in a computer’s
memory or on a disk. One megabyte equals 1,048,576 bytes or 1024KB.
Memory
The area where the computer stores data. Memory contents may be
permanent (ROM) or temporary (RAM). See also
ROM
and RAM.
Memory module
An optional card that adds 2MB or 6MB of extended memory to your
computer.
Memory-resident program
A program that remains in RAM so you can access it while another
program is running.
MHz
Megahertz. A unit used to measure the oscillation frequency of a
computer’s internal timing clock. One megahertz is one million cycles
per second.
Microprocessor
A CPU chip, such as the 486SLC. See
CPU.
8 Glossary