A dekatron was the simplest base-10 counter able to add and subtract while generating carry digits. Common dekatrons were based on decimal counting, and could switch reliably at speeds in excess ...

One of those was the dekatron: a combination memory and display tube that saw some use in the 1950s and ’60s but became obsolete soon after. Their retro design and combined memory/display ...

We’ll take a look at the Witch-E project which is building a replica of the famous Dekatron-based computer. And finish up with the surprise hit of the meetup. It was a pleasure to meet Larry ...

This is the Harwell Dekatron, also known as the Wolverhampton Instrument for Teaching Computation or the WITCH computer. It was built in 1951, which makes it the oldest working digital computer in ...

“In 1951 the Harwell Dekatron (the other, less-amazing name for the WITCH) was one of perhaps a dozen computers in the world, and since then it has led a charmed life surviving intact while its ...

But it runs, dammit. On Tuesday, volunteers at Britain’s National Museum of Computing rebooted the Harwell Dekatron — a 2.5-metric-ton monster from the early 1950s — making it the oldest ...

Harwell Dekatron: The Harwell Dekatron, also known as the Wolverhampton Instrument for Teaching Computing from Harwell (WITCH), is an early British relay­based computer created in the 1950s.

His images and captions, below. The Harwell Dekatron The Harwell Dekatron, also known as the Wolverhampton Instrument for Teaching Computing from Harwell (WITCH), is an early British relay-based ...

The Harwell Dekatron, at the National Museum of Computing, Bletchley Park, Buckinghamshire, first run in 1951. Built for the Atomic Energy Research Establishment in Oxfordshire, it replaced work ...

“In 1951 the Harwell Dekatron (the other, less-amazing name for the WITCH) was one of perhaps a dozen computers in the world, and since then it has led a charmed life surviving intact while its ...

The Harwell Dekatron, at the National Museum of Computing, Bletchley Park, Buckinghamshire, first run in 1951. Built for the Atomic Energy Research Establishment in Oxfordshire, it replaced work ...