Changes

The new machines, codenamed "Tunny", were to be fed with an enciphered message tape, and after being set up according to the Colossus data, were to produce a printed output on a teleprinter in clear German. To facilitate the testing of Tunny, one of the design engineers devised a certain set of code wheel patterns, and on his next visit Flowers was invited to type in the message "Now is the time for all good men to come to the aid of the party". He and his team worked a 12- or 14-hour day throughout the war without complaint.

The new machines, codenamed "Tunny", were to be fed with an enciphered message tape, and after being set up according to the Colossus data, were to produce a printed output on a teleprinter in clear German. To facilitate the testing of Tunny, one of the design engineers devised a certain set of code wheel patterns, and on his next visit Flowers was invited to type in the message "Now is the time for all good men to come to the aid of the party". He and his team worked a 12- or 14-hour day throughout the war without complaint.

==Later Career

==Later Career==

After the war, Flowers continued his work at Dollis Hill, applying his expertise of electronics to telephone switching and signalling systems.

After the war, Flowers continued his work at Dollis Hill, applying his expertise of electronics to telephone switching and signalling systems.

Flowers was awarded an MBE in 1943. He died in London on 28 October 1998.

Flowers was awarded an MBE in 1943. He died in London on 28 October 1998.

==Personal Life and Posthumous Repuation==

==Personal Life and Posthumous Reputation==

In 1935 Flowers married Eileen Green and they had two sons. one of the war;s "unsung heroes". He is Until recently he remained virtually unknown and has never received the public recognition he deserves.

In 1935 Flowers married Eileen Green and they had two sons. one of the war;s "unsung heroes". He is Until recently he remained virtually unknown and has never received the public recognition he deserves.