A computer monitor is an output device that displays information in visual form. It is also called a video display terminal, or a VDU. The three most common types of computer monitors are Cathode Ray Tube (CRT), Liquid Crystal Display (LCD), and Plasma Display.

A CRT monitor is the traditional type of monitor. It uses an electron gun to shoot beams of electrons at a phosphor-coated screen. The beams cause the phosphor to glow, and the image is then projected onto the screen. CRT monitors are known for their high image quality and accurate color reproduction. However, they are also …