pixels

Pixels Short for Picture Element, a pixel is a single point in a graphic image. Graphics monitors display pictures by dividing the display screen into thousands of pixels, put into rows and columns. The pixels are so close together that they appear connected. The number of bits used to represent each pixel determines how many colours or shades can be displayed. A good example is in 8-bit colour mode, the colour monitor uses 8 bits for each pixel. On colour monitors, each pixel is actually composed of three dots a red, a blue, and a green one. Ideally, the three dots should all converge at the same point, but almost all monitors have some error that can make colour pixels appear fuzzy. The quality of a display system depends on its resolution, how many pixels it can display and how many bits are used to represent each pixel. VGA systems display 640 by 480 which is about 300,000 pixels.

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The number of bits used to represent each pixel determines how many colours or shades can be displayed. A good example is in 8-bit colour mode, the colour monitor uses 8 bits for each pixel.On colour monitors, each pixel is actually composed of three dots a red, a blue, and a green one. Ideally, the three dots should all converge at the same point, but almost all monitors have some error that can make colour pixels appear fuzzy.

The quality of a display system depends on its resolution, how many pixels it can display and how many bits are used to represent each pixel. VGA systems display 640 by 480 which is about 300,000 pixels.

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