A pixel

If we zoom in or get close to a screen we can see pixels. Pixels allow our displays to represent color. Just like ASCII symbols are represented by bits, in similar way work displays. Each pixel will be illuminated with certain amount of red color, green and blue. Absence of a color means black, and light up these color to the max gives us white color. It is possible to have different colors by lighting up certain RGB colors. For example if colors red and green are turned off, and only blue is light up, then color blue will be illuminated. It is possible to have light or dark blue color depending on how much power is provided to this color element. You are probably familiar with this definition. Screen size is so many pixels horizontally and so many pixels vertically. Number of pixels, represent resolution of a screen. Typically the more pixels you have in a screen, the better quality that screen is.

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