World’s oldest digital computer restarted

One of the world’s oldest digital computers to replace the handwritten calculations of human “computors” is getting an official reboot.

The 61-year-old Harwell Dekatron — about the size and weight of an SUV — was originally hailed as a slow, steady machine capable of delivering error-free calculations while running for 90 hours a week. It has survived to become the oldest original working digital computer following the announcement of its completed restoration by The National Museum of Computing in the U.K. on Tuesday.


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