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Digital Cache: The Evolution of Computers

A computer museum in Silicon Valley offers some perspective on the next new thing.

The mass of wiring and circuitry built into the wall of the Minuteman I rocket, just below the warhead, is the first digital flight computer for nuclear missiles. Earlier guidance systems relied on radio links to ground computers and were vulnerable because atmospheric explosions during a nuclear war would have disrupted radio transmissions.

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Once they were huge, the electronic equivalents of Zeus on Mount Olympus, cumbersome, cranky, and commanding constant care. More recently, they have become abstract and ethereal, shrinking into mote-size microprocessors and vanishing into wireless networks yet retaining the power to awe, chasten, and grant blessings. In their seventh decade, electronic computers have morphed again. They are not just tools but objects worthy of contemplation in their own right. And now they have their own museum, a secular temple, if you will, devoted to explaining how and why they came to be.

A day spent at the new Computer History Museum in Mountain View, California, rekindles the wonder the big old machines must have inspired in their postwar creators. “People reach a point—it can be at age 16 or 60—when they realize there is more to life than the next new thing,” says John Toole, executive director of the museum. “It’s ...

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