Certainly a credit should be given to Polish mathematicians who for the first time worked out the secret of Enigma. These were: Marian Rejewski, Jerzy Rozycki and Henryk Zygalski. In 1932 they already established inner rotors wiring which was probably one of the greatest break trough steps in decrypting messages. The also reconstructed prototype of Enigma itself and designed electromechanical machine called by them "Bomby" to find the keys to daily messages decryptions. Alan Turing did not design first computer. He worked on improved device the "Bomby" which later was further improved by American engineers. Polish Cypher Bureau team gave all the secrets about Enigma machine, the "Bomby" design and other related information to the British crypto-analysts already in July of 1939.