Downvoted for plagiarised content, in addition to posting the same piece to two different accounts in order to generate additional potential reward: https://www.scienceabc.com/innovation/the-imitation-game-how-did-the-enigma-machine-work.html

https://steemit.com/technology/@lifestylentrprnr/how-does-the-enigma-machine-from-the-imitation-game-work-or-movie-tech