Photoshop was developed in 1987 by two brothers Thomas and John Knoll, who sold the distribution license to Adobe
Systems Incorporated in 1988. Thomas Knoll, a Ph.D.
student at the University of Michigan, began writing a program on
his Macintosh Plus to display grayscale images on a monochrome display.
This program (at that time called Display)
caught the attention of his brother John, an Industrial Light & Magic employee, who recommended that Thomas turn it into
a
full-fledged image editing program. Thomas took a six-month break from his studies in 1988 to collaborate with his
brother on the program. Thomas renamed the program
ImagePro, but the name was already taken.
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