Enigma Machine

The Enigma Maching

the enigma machine is a machine which was invented by a German ans used by Germans to send coded messages, the British then invented their own version of the enigma machine to decipher the messages the Germans were sending.
The enigma machine was vrtually impossible to crack because it had so many settings which were changed daily, Overall there were 150,000,000,000,000 - that is, 150 million million - possible combinations of 10 pairs of 26 letters on the plug board.