TNMoC
Home to the world's largest collection of working historic computers.
Follow the development of computing: from the Turing-Welchman Bombe and Colossus of the 1940s through the large systems and mainframes of the 1950s, 60s and 70s, to the rise of personal computing and the rise of mobile computing and the internet.
Recognised as one of England’s top 100 ‘irreplaceable places’, we welcome corporate and group visits, schools and individuals from all over the world.
The National Museum of Computing (TNMOC) is located on the Bletchley Park Estate but is independent of the Bletchley Park Trust.

Supporters Day 2025 - Large Systems Gallery - update

The computer that ran a nuclear power station | Ferranti Argus 500 | TNMOC Talks

TNMOC Honorary Fellow 2024 | TNMOC Talks

Linux Demystified | Virtual Talk

Introducing Colossus | Virtual Talk

A.I. for Inclusivity | TNMOC Talks

DEC 60th Anniversary Exhibition | Gallery Opening and Talks

Angela Shore | DEC UK 60th Anniversary

The Ukrainian Personal Computers that Rebooted the USSR | TNMOC Talks

Gerald Marsh | DEC UK 60th Anniversary

Kevin Murrell | DEC UK 60th Anniversary

Richard Briggs | DEC UK 60th Anniversary

David Lawrence | DEC UK 60th Anniversary

David Probert | DEC UK 60th Anniversary

Ken Salmon | DEC UK 60th Anniversary

Pete Lomas | DEC UK 60th Anniversary

Angela Shore | DEC UK 60th Anniversary

Horsforth - HMS Aubrietia, Enigma and Ultra | TNMOC Talks

MEOM: Ukraine’s Iron-Curtain computer | TNMOC Talks

"20 GOTO 10" Retro Computer Facts | TNMOC Talks

Personal Recollections of Brigadier John Tiltman | TNMOC Talks

Using Colossus with Russian teleprinter traffic | Virtual Talk

Kino and Kinder: A Family’s Journey in the Shadow of the Holocaust | TNMOC Talks

Kathleen Booth - British Computing Pioneer | Virtual Talk

Urgent Call to Preserve Computing History!

White Elephant Technology - Five Unusual Inventions | Virtual Talk

TNMOC Mate | Accessible learning at TNMOC with Version 1

Vint Cerf | TNMOC Roof Restoration Appeal

What would Alan Turing think of ChatGPT? TNMOC experts' Q&A | Virtual Talk

Alan Turing's Manchester | Virtual Talk