Kilobyte (KB)

A unit used to measure storage space in a computer’s memory or on a disk. One kilobyte equals 1024 bytes. See also Byte.

LIM EMS 4.0

Version 4.0 of the Lotus/Intel/Microsoft Expanded Memory Specification- a description of a capability your computer has for supporting programs that use expanded memory. See also Expanded memory.

Main system board

The circuit board inside your computer containing the circuitry and components your computer needs to operate.

Math coprocessor

A device that enables the computer to process mathematical calculations faster by using floating point numbers instead of whole numbers. This speeds up certain math and graphics operations performed by programs that use this type of calculation.

MCGA

Multi-color Graphics Array. A type of display adapter that emulates a color graphics adapter (CGA). MCGA provides two additional modes: 640 x 480 in two colors and 320 x 200 in 256 colors. See also CGA.

MDA

Monochrome Display Adapter. A type of display adapter that displays in 80 column by 25 line text mode in only one color, such as green or amber.

12Glossary