Interleave factor

The number of physical sectors on a disk drive that the computer skips when reading consecutive logical sectors the same track. An interleave factor of 1:1 indicates that the data is stored on the drive in adjacent sectors. Larger ratios indicate that the data is not stored sequentially.

A small device that connects two pins on an option card, a disk drive, or the main system board to activate a particular function.

Key disk

A diskette containing a copy-protected program that must remain in the diskette drive while you are using the program.

Kilobyte (KB)

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

LIM 4.0 EMS

Version 4.0 of the Lotus/Intel/Microsoft Expanded Memory Specification-a protocol that allows certain application programs to use memory that MS-DOS cannot use.

Main system board

The board built into your computer containing the circuitry that the computer requires to operate.

Math coprocessor

An optional device that enables the computer to process certain mathematical calculations faster.