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Wednesday, February 24, 2016

Electronic surveillance

Will the NSA Finally Build Its Superconducting Spy Computer?

opener image for frozen supercomputer feature
Today, silicon microchipsunderlie every aspect of digital computing. But their dominance was never a foregone conclusion. Throughout the 1950s, electrical engineers and other researchers explored many alternatives to making digital computers.
One of them seized the imagination of the U.S. National Security Agency (NSA): a superconducting supercomputer. Such a machine would take advantage of superconducting materials that, when chilled to nearly the temperature of deep space—just a few degrees above absolute zero—exhibit no electrical resistance whatsoever. This extraordinary property held the promise of computers that could crunch numbers and crack codes faster than transistor-based systems while consuming far less power.

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