DOS

Short for MS-DOS. The Disk Operating System that controls the computer’s input and output functions. See Operating system.

Double-density

A type of diskette. Double-density, 3 ‘/z-inch diskettes have a capacity of 720KB.

Drive identifier

The letter name of a diskette drive or hard disk, followed by a colon (for example, A: or C:).

ECD

Enhanced Color Display.

E G A

Enhanced Graphics Adapter. A type of video monitor that can display graphics.

Executable file

A file containing program instructions. In MS-DOS, executable files must have an extension of .BAT, .COM, or .EXE. To perform the instructions in the file, type its name at the command prompt (with or without the extension).

Execution speed

The speed at which the CPU can execute commands. The Equity LT-286e can run at 8 MHz or 12 MHz. Also called clock speed or operating speed.

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