Check the links below for the films (via YouTube)
Testimonials from the last living engineers who worked on the wartime code-cracking machine Colossus have been gathered for a film celebrating their work.
The codes cracked by the device helped ensure the success of the Normandy invasion that led to the Allied victory in World War II.
The Colossus film is the second that Google produced about historical computers and those who created them. In November 2011, it published a film about the Leo, the world's first business computer.