Epson 500 Series - Manual (Page 108)

LED
Light Emmitting Diode. An indicator light such as those used for the
Action Note power, disk drives, and keyboard settings.
Local bus
An internal group of wires that sends information from the
microprocessor to the video controller in the ActionNote. Local bus
video provides increased performance.
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 l,048, 576 bytes or 1024KB.
Memory module
An optional card that adds 4MB of extended memory to your
computer. (Also called an extension memory module.)
MHz
Megahertz. A unit used to measure the oscillation frequenty 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.
Modern
MOdulator / DEModulator. A serial device that allows the computer to
send and received data over the telephone lines.
4. Glossary