Steve Jobs, who passed away aged 56, started Apple Computer with a high school friend in a Silicon Valley garage in 1976, was forced out a decade later, and then returned to rescue the company.
During his second stint, Apple grew into the most valuable technology company in the world.
Jobs invented and masterfully marketed ever-sleeker gadgets that transformed everyday technology, from the personal computer to the iPod and iPhone.
Cultivating Apple's countercultural sensibility and a minimalist design ethic, he rolled out one sensational product after another, even in the face of the late-2000s recession and his own failing health.
Jobs helped change computers from a geeky hobbyist's obsession to a necessity of modern life at work and home, and in the process he upended not just personal technology but the cellphone and music industries.