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The Unbelievable Zombie Comeback of Analog Computing


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“A lot of Silicon Valley companies have secret projects doing analog chips,” said Lyle Bickley, a founding member of the Computer History Museum.

Credit: Khyati Trehan

When old tech dies, it usually stays dead. No one expects rotary phones or adding machines to come crawling back from oblivion. Floppy diskettes, VHS tapes, cathode-ray tubes—they shall rest in peace. Likewise, we won't see old analog computers in data centers anytime soon. They were monstrous beasts: difficult to program, expensive to maintain, and limited in accuracy.

Or so I thought. Then I came across this confounding statement:

Bringing back analog computers in much more advanced forms than their historic ancestors will change the world of computing drastically and forever.

Seriously?

I found the prediction in the preface of a handsome illustrated book titled, simply, Analog Computing. Reissued in 2022, it was written by the German mathematician Bernd Ulmann—who seemed very serious indeed.

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