I recommend as well the comic The Thrilling Adventures of Lovelace and Babbage: The (mostly) true story of the first computer: https://www.amazon.co.uk/Thrilling-Adventures-Lovelace-Babba...

Very funny read with great art.

Last Christmas, I was given and then bought for others:

The Thrilling Adventures of Lovelace and Babbage: The (Mostly) True Story of the First Computer

( https://www.amazon.co.uk/Thrilling-Adventures-Lovelace-Babba... )

It's a halfway house between a graphic novel and a proper book, and is written in a very entertaining way. I can thoroughly recommend it for anyone who is interested in Computer History, and normally struggles through dry tomes of non-fiction (which this is most definitely not!)