Epson 4SLC2-50 - Manual (Page 136)

CMOS ROM
A special type of low-power memory in your ActionNote that
records information about your system configuration. Unlike
RAM, CMOS ROM is backed up by a battery and is not erased
when you turn off the computer.
COM1
The name that MS-DOS uses to identify the primary serial port.
COM2
The name that MS-DOS uses to identify the secondary serial port.
CONFIG.SYS file
A special system file that MS-DOS executes each time you turn on
or reset the computer. You use this file to customize your system
by installing device drivers, setting limits for files and buffers, and
specifying MS-DOS commands to be run during startup.
Control code
A command (generated by holding down Ctrl and pressing
another key on the keyboard) that instructs the computer to
perform a specific function.
Controller
A hardware component of your computer that manages the
operation of the display, hard disk, or diskette drive.
Conventional memory
The amount of memory in the computer below lMB that is
available to MS-DOS and application programs-usually 640KB.
Also called base memory or main memory.
Glossary 3