Created in 1987, Photoshop was originally written on the Macintosh Plus of PhD student Thomas Knoll who wanted to display grayscale images on a monochrome screen. The earliest version of the ...

Part 1 of a 2 part Photoshop CC tutorial showing how to make a great-looking, classic, radar screen display including a grid background, radar sweeps, glowing blips, and radiating concentric circles.