Dorothy Du Boisson (left) and Elsie Booker (right) were both members of the Women's Royal Naval Service and worked as Colossus Operators.

Colossus was the world’s first practical electronic digital information processing machine - a forerunner of today’s computers.


  • Title: Colossus 10
  • Date: 1943/1945
  • Location: Bletchley Park
  • Rights: Source: Bletchley Park Trust

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