What is Contrast ratio

The ratio of brightest white to the darkest black on TV or computer monitor. it is used to measure a difference between the brightest white and the darkest black. The contrast ratio will be measured as y:z, where 'y' is the brightest white, and 'z' is the darkest black. the contrast ratio for LCD and computer monitor is 200:1, a number higher than this, such as 600:1, has a brighter display.

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