Megahertz

See MHz.

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 6MB of extended memory to your computer. (Also called an extension memory module.)

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 also CPU.

Modem

MOdulator/DEModulator. A serial device that allows the computer to send and receive data over the telephone lines.

Monitor

A device that contains a screen and displays keyboard input and other information. See also CRT.

8Glossary