Before Steve Wozniak co-founded Apple Computers, he was just a super-nerdy kid who loved to operate HAM radios. In a new video interview detailing the most formative moments in his totally geeky life, Woz explains how he went from tinkering with electronics to teaching himself binary by 5th grade, and then made a machine that played tic-tac-toe in 6th grade.
Woz eventually got so good with machines that he could design a mini-computer in two days. Those skills led to his creation of the Apple II computer, which put his and Steve Jobs’ fledgling company on the map.
Watch as Woz recounts his childhood obsession with computers, during the humble beginnings of Silicon Valley, below: