Monitor

A monitor is the screen on which words, numbers, and graphics can be seem.  The monitor is the most common output device.

                    In computers, a monitor is a computer display and related parts packaged in a physical unit that is separate from other parts of the computer. Notebook computers don't have monitors because all the display and related parts are integrated into the same physical unit with the rest of the computer. In practice, the terms monitor and display are used interchangably.