Technoarchaeology: Bringing The Oldest Digital Computer Back

Two-tonne Witch computer gets a reboot, BBC

"The world's oldest original working digital computer is going on display at The National Museum of Computing in Buckinghamshire. The Witch, as the machine is known, has been restored to clattering and flashing life in a three-year effort. In its heyday in the 1950s the machine was the workhorse of the UK's atomic energy research programme. A happy accident led to its discovery in a municipal storeroom where it had languished for 15 years."

World's oldest original digital computer WITCH returns to life, ZDnet

"WITCH has 828 flashing Dekatron valves, 480 relays, 18 switches, and consumes 1.5kW of power. Remarkably, the restoration team said that the majority of parts in the machine are original. "The restoration was quite a challenge requiring work with components like valves, relays and paper tape readers that are rarely seen these days and are certainly not found in modern computers," said Delwyn Holroyd, a TNMOC volunteer."

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