VIDEO DISPLAY DEVICES

The computer monitor is by far the most common computer output device in use today. It is the window to the electronic world. Think about it: how many people around the world are staring at a computer screen at this very moment?

A computer monitor is a vehicle by which information that has been processed is presented to the end user. The components involved in producing a final image from a computer system are a video adapter (or video card) and a monitor. The computer monitor has had many names since its inception. In the early (DOS) days of computing, the monitor was called a console, or CON for short. It has also been called a CRT, which is an acronym for Cathode Ray Tube.

Computer monitors are categorized into two main groups: CRTs and Liquid Crystal Displays (LCDs).

Before we continue, here are a few important tips for the test. A computer monitor uses a DB-15 pin-style male connector to attach to the 15-pin female connector on the back of a computer. If one of these pins is bent or broken, the display screen may flicker, turn many strange colors, or show nothing at all. In addition, it is essential to know that most of today’s video adapters contain their own BIOS chip, which interacts between the video card and the system processor.