I class myself as a bit of a computer historian. I have written a book on the subject, I teach classes about it, etc. I feel qualified to discuss this subject.
It appears tho that we were all wrong. I have conclusive proof that the Germans had the IBM PC in World War 2. This picture clearly shows a WW2 U-boat in dry dock. If you look carefully at the bow (sharp end of the boat) you can see a PC! Weighing in at 50lb they make a damn fine boat anchor.
This picture clearly shows that the germans knew that PC's were 'Boat Anchors' in the 1930's.
History could be changed based on this historic picture.