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Explain how a monitor works.

      

Explain how a monitor works.

  

Answers


Kavungya
The inner surface of the screen is coated with a Phosphorus material that emits/ produces light when struck by an electron beam. Whenever the electrons hit the phosphor, it glows, producing images.
When the Monitor is plugged into the Video card, it gets a scan frequency (or a signal) giving the timing of the screen redraws.
The electron beam must cross the screen in synchronization with the scan signal of the Video card. The beam starts at the top left of the screen, crossing to the right. As it does this, it excites the phosphor dots. On reaching the right side of the screen, it returns to the left side in order to refresh the line of pixels underneath the first one. It continues this process down the screen, returning to the top to do it over again when it has finished the entire screen.
During the process, the beam excites those phosphor dots, which the video card tells it to. Therefore, the card gives instructions to the electron gun to excite some pixels; hence, forming pictures.
On a Colour monitor, each pixel contains 3 separate dots, one for each of the primary colours of light; Red, Yellow, & Blue. Combining these colours together produces the range of colours that we all know.
Kavungya answered the question on April 2, 2019 at 06:47


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