Space does not permit me to go into detail on WW2 computers except to say that Konrad Zuse invented the first electro-mechanical type with a computer language by 1936 in his parent's apt- the Zuse Z-1. During the war with the Allies unaware, Zuse built many more computers of the Z-series as well as two of the S-series that were used by the Henschel aircraft company to design advanced swept wings for jet fighters and designs for missile aerodynamics. In 1945 the most advanced German computer the Z-4 was hidden in a barn in Germany right under Allied noses and then secretly transported by truck across the border to Switzerland, temporarily hidden on a Swiss farm protected by nothing more than a Swiss farm girl!! It later was used in the Swiss banking industry.

Drawing of simple 1940s little Swiss girl: http://www.flickr.com/photos/jackr/4594343/ Now, the Zuse Z-4 computer: http://www.weller.to/mus/img_dm/zuse-z4-lr.jpg