Computer devices such as mice, printers, scanners and speakers are known as peripheral hardware. These peripherals are further split into two categories, input devices and output devices.

Monitor - The main output device of a computer. It forms images by converting electrical energy into light in the form of tiny dots on the screen called pixels.

An output device is one that allows data to leave a computer, most often in a form intelligible to a human user. Some devices, such as touch screens, are hybrid devices and can do both. Examples ...