What Is an Image Inside a Computer?
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Computer World
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How text, images, colors, and sound become data.
What Is a Pixel?
A pixel is the smallest image-position unit in a digital bitmap. Each pixel records a color, and many pixels arranged in rows and columns make the photos and screenshots we see.
How Does RGB Create Colors?
RGB is a common way to represent color in digital images and screens. Red, green and blue channels combine to make many colors; with 8 bits per channel, each value usually ranges from 0 to 255.