Jobs co-founded Apple Computer in 1976 and, with his childhood friend Steve Wozniak, marketed what was considered the world’s first personal computer, the Apple II. Industry watchers called him a master innovator — perhaps on a par with Thomas Edison — changing the worlds of computing, recorded music and communications.
In 2004, he beat back an unusual form of pancreatic cancer, and in 2009 he was forced to get a liver transplant. After several years of failing health, Jobs announced on Aug. 24, 2011 that he was stepping down as Apple’s chief executive. “I have always said if there ever came a day when I could no longer meet my duties and expectations as Apple’s CEO, I would be the first to let you know,” Jobs wrote in his letter of resignation. “Unfortunately, that day has come.”