Steve Jobs and Steve Wozniak started Apple in a garage in the 1970s. Today, the maker of MacBooks, iPhones, and AirPods is valued at nearly $4 trillion Apple is one of the world’s most iconic brands.

July 20, 1978: Apple DOS makes its debut on the Apple II, giving Apple its first official operating system. A command line interface with green text prompts on a black background, Apple DOS looks ...