Photoshop, a popular image editing tool started in 1987 when Thomas Knoll, a PhD student at the University of Michigan began writing a program on his Macintosh Plus to display grayscale images on a monochrome display. This program is called Display who later on renamed to ImagePro then Photoshop.
Photoshop does magic in images that isn’t possible with processed images. It makes image editing easy that is why developers and even photographers love to use this tool. If you’ve been using Photoshop for years then you might be interested on how this revolutionary image editing software was developed and how it all began.