HackerTube / Video
Colossus - The Greatest Secret in the History of Computing
The Centre for Computing History

Chris Shore of the Centre for Computing History explains how Colossus was built, how it worked, and how it affected the course of World War II. It is an hour-long museum lecture on the codebreaking computer.
HN commenters recommend it as an excellent deep dive on the real Colossus, full of stories about unsung engineers.
3 Hacker News mentions · 2022–2024