Thursday, 9 February 2012

Monitor


Dear Members,
      This is our first lesson related to Output Devices Session...
In this lesson we give you knowledge about the Monitor and its types.
SO FRIENDS LETS START OUR LESSON
  • Monitor :-
Monitor is an output device which used to display your data coming from the computer. It is just like a TV. The most important aspect of a monitor is its screen size. Like television, screen sizes are measured in diagonal inches, the distance from one corner to the opposite corner diagonally.
                             It can be any size like 14 inch 17 inch 21 inch etc. The resolution of a monitor indicates how densely packed the pixels are. In general, the more pixels (often expressed in dots per inch), the sharper the image. Most modern monitors can display 1024 by 768 pixels, the SVGA Standard. Some high end models can by 1200. With respect to color.
  • Types of Monitor :-
There are many types of Monitor some are mentioned below :-
  • Monochrome:-
Monochrome monitors actually display two colors, one for the background and one for the foreground. The colors can be black and white, green and black, or amber and black.
  • Gray-scale :-
   A gray-scale monitor is a special type of monochrome monitor capable of displaying different shades of gray.
  • Color Monitor :-
                        Color monitors can display anywhere from 16 to over 1 million different colors. Color monitors are sometimes called RGB monitors because they accept three seprate signals - -red, green, blue.
  • CRT Monitors :-
                            
                                 Abbreviation of cathode ray tube, the technology used in most televisions and computer display screen. A CRT works by moving an electron beam back and forth across the back of the screen. Each time the beam makes a pass across the screen, it lights up phosphor dots on the inside of the glass tube, thereby illuminating the active portions of the screen. 
By drawing many such lines from top to the bottom of the screen, it creates an entire screen full of images.



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