WITCH News

The Harwell Dekatron Computer - the book

New TNMOC book tells the story of the world's oldest working digital computer

WITCH recognised by Guinness World Records

The Harwell Dekatron / WITCH computer has been recognised by Guinness World Records as the world's oldest original working digital computer.

The Video of the Reboot

Twenty minute video of the reboot of the world's oldest working digital computer, the Harwell Dekatron / WITCH.

Restoration complete!

The world's oldest original working digital computer springs back into action at TNMOC

Harwell Dekatron / WITCH restoration during 2012

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.

Harwell Dekatron / WITCH Restoration - 2010

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.

Harwell Dekatron / WITCH Restoration - 2009

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.