Ppt

5. 1. Introductio5n
2. Classification of monitor based on colors
 Monochrome
 Gray-Scale
 Color Monitor
3. Types of Monitor
4. Characteristics of Monitor
5. Conclusion

6. A computer monitor is an output device that displays information in pictorial or textual form.
 A discrete monitor comprises a visual display, support electronics, power supply, housing, electrical
connectors, and external user controls.
 Computer monitors were used for data processing while television sets were used for video.
 Modern computer monitors are mostly interchangeable with television sets and vice versa.
 Computer monitors were formerly known as visual display units (VDU).
 The first computer monitor was introduced on 1March 1973, which was part of the Xerox Alto
computer system.

7. MONITORS
Monochrome Gray-Scale Color

8. 1. Monochrome
 Monochrome monitors are computer monitors that display a single color against a solid background.
 A monochrome monitor is a type of CRT that was very popular.
 Monochrome relies on two main colors often black and white as well as the shades in between.
2. Gray-Scale
 Grayscale is a group of shades without any visible color.
 On a monitor, each pixel of a grayscale display carries an amount of light, ranging from the weakest amount
of light, or black to the strongest amount of light or white.
3. Color
 Color monitors implement the RGB color model by using three different phosphors that appear red, green,
and blue when activated.

9. MONITORS
CRT FLAT PANEL LCD LED

10. 1.CRT MONITOR (Cathode Ray Tube)
 A cathode ray tube is a vacuum tube containing one or more electron guns,
which emit electron beams that are manipulated to display image on a
phosphorescent screen.
 The images may represent electrical waveforms, pictures, radar, targets,
phenomena.
 A CRT on a television set is commonly called a picture tube.
2.FLAT PANEL MONITOR
 A flat panel display is a television, monitor or other display appliance that uses
a thin panel design instead of a traditional cathode ray tube design.
3.LCD MONITOR (Liquid Crystal Display)
 A liquid crystal display monitor is a computer monitor or display that uses LCD
technology to show clear images, and is found mostly in laptop computers and
flat panel monitors.
 This technology has replaced the traditional cathode ray tube monitors.
4.LED MONITOR (Light Emitting Diode)

11. 1. RESOLUTION
 The resolution of a monitor indicates how density the pixels are packed.
 Pixel is short for picture element.
 A pixel is a single point in a graphic image.
2. SIZE
 The most important aspect of a monitor is its size.
 Screen sizes are measured in diagonal inches, the distance from one corner to another opposite
corner diagonally.
3.DOT PER INCH
 It is measured for the actual sharpness of the on screen image.
 This depends on both the resolution and the size of the image.
4.REFRESH RATE
 Display monitors must be refresh many times per second.
 The refresh rate of a monitor is measured in Hertz.

12.  Monitor are very important because without them you would not be able to view your
output.
 Monitor were used for data processing while Television sets were use for entertainment.
 Monitors are visual output devices that display computer generated images.