Digital Apollo, by David Mindell (development of Apollo guidance and avionics generally)
The Dream Machine by Mitchell Waldrop (technical development leading up to the Arpanet, thence to the Internet)
Colossus, the secrets of Bletchley Park's codebreaking computers, by Jack Copeland et al.
Unfortunately, there's a lot more of the technically unsophisticated junk that Knuth is complaining about, and the excuses offered here rather badly miss the point. ("The history of software is not the history of computer science". Yes, and so? How does a history of software from which all technical detail has been drained away contribute anything of value?)