Epson Powerspan 2 User Manual page 207

Conventional memory
The memory in the computer below 1MB that is available to
MS-DOS and application programs-usually 640KB. Also
called base memory or main memory.
Coprocessor
See Math coprocessor.
Copy-protected program
A program containing a software "lock" that prevents it from
being copied. Some of these programs require you to leave the
program diskette in the drive while you use it. See also Key disk.
CPU
Central Processing Unit. The integrated circuit (chip)
responsible for integrating program instructions, performing
calculations, and controlling all input and output operations.
See also Microprocessor.
Default
Any value or setting choice that the computer or a program
makes when the user does not specify an alternative. A default
value stays in effect unless you override it temporarily by
changing the value or you reset the default value itself.
Device driver
A file containing instructions that allow your computer to
recognize and communicate with a device. The device may be a
printer, monitor, or other type of device.
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