Epson EQUITY 3865X/20 PLUS - Manual (Page 251)

MGA
Multi-mode Graphics Adapter. A type of display adapter card
that can display monochrome text and color graphics on the
screen.
Microprocessor
A small version of a CPU contained on one semiconductor
chip.
Modem
A device that allows a computer to transmit signals over
telephone lines so it can send and receive data. Modem stands
for MOdulator/DEModulator.
Monitor
The piece of hardware that contains the screen and displays
information.
Monochrome monitor
A monitor that displays in only one color, such as green or
amber, as opposed to a color monitor which can display in
several colors.
Mouse
A hand-held pointing device with one or more buttons. When
you slide the mouse over a flat surface in a certain direction, the
cursor moves in the same direction on the screen.
MS-DOS
Microsoft Disk Operating System. The operating system most
commonly used with your computer. See Operating system.