Without computer clubs there would probably be no Apple computers. Our club in the Silicon Valley, the Homebrew Computer Club, was among the first of its kind. It was in early 1975, and a lot of tech-type people would gather and trade integrated circuits back and forth. You could have called it Chips and Dips. We had similar interests and we were there to help other people, but we weren't official and we weren't formal. Our leader, Lee Felsenstein, who later designed the Osborne computer, would get up at every meeting and announce the convening of "the Homebrew Computer Club which does not exist" and everyone would applaud happily.

    The theme of the club was "Give to help others." Each session began with a "mapping period," when people would get up one by one and...