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How Computers Work, Ninth Edition by Timothy Edward Downs, Ron White

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Chapter 18. How a Computer Display Works

How a Computer Display Works

WHEN you read the Sunday funnies, you’re looking at a hardcopy version of the way a computer displays graphics. Put a magnifying glass to the color comics and you’ll see that they are made up of hundreds of dots of red, blue, yellow, and black ink. Different colors and shades are created by varying the sizes of the dots, called Ben Day dots. Large red and yellow dots and small blue dots create a shade of orange. Increase the size of the blue dots in the same area, and the color becomes brown.

If you look at a comic strip too closely, you see the dots themselves rather than the image they are creating. But ...

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