Numeric Keypad; Operating System - Epson Endeavor User Manual

Multifrequency monitor
A monitor that accepts input at different frequencies and can
display in a variety of resolutions.
Multitasking
The ability of a computer and an operating system to work on
more than one command or task at a time. The tasks are
actually not performed at the same time, but they are assigned
priorities and rapidly processed by the computer in sequential
order. See also OS/2 and UNIX.

Numeric keypad

The number and cursor control keys grouped together on the
right side of the keyboard. The operation of the dual-use keys
on the numeric keypad is controlled by the
Operating speed
The speed at which the computer's processor can execute
commands, usually expressed in megahertz (MHz), such as
33 MHz. See also Megahertz.

Operating system

A collection of programs that manage a computer's operations,
such as interpreting input, managing files, and reading and
writing data to disk. The operating system (such as MS-DOS,
OS/2, or UNIX) provides the foundation for the other
programs you use and controls the usage of the hardware
resources.
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