From an article on the invention of the mouse and computer printer in the new New Yorker....
Jobs was given a couple of tours, and he ended up standing in front of a Xerox Alto, PARC’s prized personal computer. Describes the innovations the Alto featured, including the mouse, icons, and “windows.” Xerox soon began selling a version of the Alto. It was slow and underpowered—and Xerox withdrew from personal computers. Jobs, meanwhile, raced back to Apple, and demanded that the team working on the company’s next generation of personal computers change course. He wanted menus on the screen. He wanted windows. He wanted a mouse. The result was the Macintosh, perhaps the most famous product in the history of Silicon Valley.