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Computer Monitor

      Computer Monitor or VDUs  

        The Computer Monitor or VDUs is most popular output device is the Visual Display Unit (VDU), which is the standard output device. It is also called the monitor. It is a piece of electrical equipment that displays images and texts as generated by a computer without producing a permanent record. A monitor usually consists of either a cathode ray tube (CRT) or some form of the flat panel such as a TFT LCD display. The following is an image of a CRT monitor.

          Types of Monitors

          • CRT Monitor    
          • TFT LCD Monitor 
          • LED Monitor             

          CRT Monitor

          The CRT stands for Cathode Ray Tube. It displays images into a screen with the help of a vacuum tube which contains electron guns were the electron beam deflects onto the screen to produce an image. Any way CRT is also used as a memory device.

          CRT Monitor


          TFT LCD Monitor

          The TFT LCD stands for Thin Film Transistor Liquid Crystal Display. It improves image quality such as contrast with the help of a Thin Film Transistor technology. A TFT LCD is an active matrix and contrasts to a passive matrix. It also used in computer monitors and mobile phone screens.

          TFT LCD Monitor

          LED Monitor

          A LED stands for Light Emitting Diodes. It contains a flat display panel that uses an array of light-emitting diodes as pixels for display. This also used in public transport vehicles such as bus, car, etc, and direction signs such as toll gate, police instruction in signal place, etc,.

          LED Monitor


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