- Alan Turing - pedia
- The Alan Turing Year - 2012 Turing
- Alan Turing Scrapbook - The Enma War
- Enma Machine - Cipher Machines
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Alan Turing - pedia
The German Navy adopted the Enma in 1926 and the Army in 1928.
The Alan Turing Year - 2012 Turing
The typewriter was replaced by a lamp panel, requiring the user to write down the results of ciphering and deciphering a message.
Alan Turing Scrapbook - The Enma War
The first model A and model B machines were heavy at 110 lbs. These first models had a typewriter incorporated into the device but did not have a reflector.The Enma machine was first offered for sale in 1923, but had few takers.
Enma Machine - Cipher Machines
This was in the same time frame that 3 other inventors from 3 other countries also applied for a patent for a rotary cipher machine.
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