Concept information
Preferred term
ultra and enigma
Definition(s)
- In the early 1920s a German manufacturer advertised an enciphering machine that it declared unbreakable. The machine, called the Enigma, used a series of rotors and electrical plugs to encipher a message before transmission. [Source: Encyclopedia of War & American Society; Ultra and Enigma]
Broader concept(s)
Belongs to group
URI
http://data.loterre.fr/ark:/67375/N9J-RH4GTFMJ-H
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