Monitors

 The monitor is the most frequently used soft copy output device. A computer screen, that is, monitor, is a TV like display unite attached to the computer on which the output can be displayed and viewed. Images on the monitor are created by the collection of dots. These dots are known as pictures' elements or pixels. More the pixels on the monitor, sharper the picture is. The computer screen can be either a monochrome display or a color display. A monochrome screen uses only one color to display text on a contrasting background. A color screen commonly displays 256 colors.

Nowadays, users are increasingly viewing video clips, animated objects, and complex graphics. Due to this, Monitors are becoming more popular. Monitors are available in various screen sizes like 14, 15,17,19,21 inches. Notebook- computer screen sizes are usually smaller, typically ranging from 12-15 inches. Most of the monitors are made up of CRT (Cathode Ray Tube) in which the image is formed, whose pixels are coated with phosphorus, causing them to glow when hit by electron beam. CRT monitors require a lot of power to run, therefore, they are not practical to use with notebook computers. LCD monitors are flat panel monitors which create images with a special kind of liquid crystal. LCD monitors consume very less power. So, they are used in hand held computers, laptop and calculators. There are different types of display adapters that can be used in the monitor. They are classified on the basis of resolution, color, and displayed mode.

1. MDA( Monochrome Display Adapter)

2. CGA (Color Graphic Adapter)

3. EGA ( Enhanced Graphic Adapter)

4. VGA (Video Graphic Array)

5. SVGA (Super Video Graphic Array)