Which machine started the computer revolution? Some say the ABC at Iowa State was the first computer, but it never got used in a practical way. Others credit Eniac, which wasn't technically first but got the public and government excited about computing.
It's hard to underestimate the influence of Colossus, however. The British-built programmable system at Bletchley Park, England, helped crack the secret codes of the Third Reich and speed the end of World War II.
The MK 1 Colossus was built in 1943 and used 1,500 vacuum tubes to calculate. By June 1944, subsequent Colossus machines … Read more