Epson 3865X Plus - Manual (Page 313)

Configuration
The particular setup of a group of components. For example, a
typical system configuration consists of a computer with one
diskette drive, one hard disk drive, and a monitor, connected to
a printer.
Control code
A command (generated when you hold down Ctrl and press
another key on the keyboard) that instructs the computer to
perform a specific function.
Conventional memory
The memory in your computer (up to 640KB) used by MS-DOS
and application programs. Also called base memory or main
memory.
Coprocessor
An optional device that enables the computer to process certain
mathematical calculations faster.
Copy-protected program
A type of program that cannot be copied. Some copy-protected
programs require you to leave the program diskette in the
diskette drive while you are using it. Some also require the
computer to be running at low speed (simulated 8 MHz) instead
of high speed (16 MHz). See also Automatic speed.
CPU
Central Processing Unit. The primary unit of the computer that
interprets instructions, performs the tasks you indicate, keeps
track of stored data, and controls all input and output
operations.
4 G l o s s a r y