This is a fantastic, technically oriented book from MIT Press that I heartily recommend to
anyone seriously interested in the history of computers:
The First Computers--History and Architectures
http://www.amazon.com/First-Computers--History-Architectures-History-Comput…
An excerpt from it comparing the ENIAC with the ENIAC-on-a-chip is found, along with an
image of the ENIAC chip, at the bottom of my web page here:
http://diephotos.blogspot.com/