I'm still working thru "The Innovators"! and so far it has been a delight. One of the main points of the book was the importance of teamwork. It's a great take on the idea that in the shadow of great figures, like Steve Jobs and IBM, lie hundreds of lesser known innovators.
+1 for Turing's Cathedral. As mentioned, it's a lot about von Neumann. Slightly dense writing style but does a great job of explaining some of the key intellectual breakthroughs behind development of the computer. It's most about the 1940s-50s but it sets the historical context well (both contemporary and going back to Gottfried Leibnitz).