The Computer That Helped Win World War II

During World War II, the British developed Colossus, the world’s first large-scale programmable electronic digital computer, to decrypt complex German encrypted communications from the Lorenz cipher machine known as Tunny. Designed by engineer Tommy Flowers, Colossus automated and accelerated cryptanalysis at Bletchley Park, enabling the Allies to intercept critical military intelligence that significantly aided their war efforts. The machine’s success marked a pioneering use of digital electronics in computing and is recognized as an IEEE Milestone for its historical and technological significance.

https://spectrum.ieee.org/colossus-computer-ieee-milestone