The Harwell Dekatron / WITCH computer has been recognised by Guinness World Records as the world's oldest original working digital computer.
Twenty minute video of the reboot of the world's oldest working digital computer, the Harwell Dekatron / WITCH.
The world's oldest original working digital computer springs back into action at TNMOC
The Harwell Dekatron computer was used at Harwell from 1951-57 and then won by Wolverhampton College, renamed the WITCH and used for teaching computing until 1973.
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