There aren't many books about this. Instead there are papers that describe historic systems at particular points in time, or describe (part of) the history of a particular system.
For programming languages, the canonical papers appeared in the three History of Programming Languages (HOPL) conferences:
https://en.wikipedia.org/wiki/History_of_Programming_Languag...
For Unix and C history, start with Dennis Ritchie's page (scroll down to Unix papers):
https://www.bell-labs.com/usr/dmr/www/
For the Internet, there is this review of classic papers on the Internet and some alternatives:
http://named-data.net/publications/main/
There are also some popular books on Internet history - a good one is Where Wizards Stay Up Late by Katie Hafner and Mathew Lyon.
You might find something interesting among these links on computing history:
http://jon-jacky.github.io/home/links.html#history
and Unix/Linux history (scroll down to Unix heritage society):
http://jon-jacky.github.io/home/links.html#linux
still more here about Unix and other systems:
http://jon-jacky.github.io/home/links.html#design-examples
Historical descriptions of a few influential systems and many obscure ones:
https://github.com/jon-jacky/Piety/blob/master/doc/precursor...