For Enigma fans

[Ian Batten]

On 29 Mar 2009, at 13:52, Dave Howe wrote:

> Pete Mitchell wrote:
>> http://www.dailymail.co.uk/news/worldnews/article-1165535/The-Wider-View-Nazi-codebreaker-shortened-Second-World-War-years.html
>
> I was under the impression that the bombe was not "based on" the  
> bomba,
> but was an near-exact duplicate.

I think the diagonal board makes it rather more than a `near-exact  
duplicate'.  Conversely, had Turing and Welchman not had the basic  
device to work with, they might not have had time to work on the  
diagonal board.

ian