The term pixel is short for “Picture Element”. A pixel is the smallest unit of an image. Pixels are usually round, rectangular or square and typically arranged into a square 2-dimensional grid but can sometimes be staggered as well. For LCD screens, most pixels will have 3 sub-pixels each with one of the primary colors of red, green or blue. By combining the 3 primary colors together at varying intensity, you can then produce the many other colors in the picture.
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