The standard textbooks by historians are:
A History of Modern Computing by Paul Ceruzzi
There is a completely rewritten version of this with an additional author:
A New History of Modern Computing by Thomas Haigh and Paul Ceruzzi
Also:
Computer: A History of the Information Machine by Martin Campbell-Kelly and William Aspray
There are good books by journalists and popular writers. Favorites on HN are:
The Dream Machine -- you are already reading this. Also:
Hackers: Heroes of the Computer Revolution by Steven Levy
Where Wizards Stay Up Late: The Origins Of The Internet by Katie Hafner and Matthey Lyon
These and many many other books are recomended and described in
this HN thread from a few years ago:
Ask HN: Computer Science/History Books?
https://news.ycombinator.com/item?id=22692281