I recently read a popular science book called "The Information: A History, A Theory, A Flood" by James Gleick. The book is basically a biography of Claude Shannon and is about information theory. It covers, what is quite a challenging subject, in a very approachable way; giving examples from African talking drums to modern digital communication. Other people also feature such as: Robert Caudrey, the compiler of the first English dictionary; Samuel Morse, the inventor of the eponymous code, and people more familiar to this blog, Charles Babbage, Ada Lovelace and of course Alan Turing.
I really enjoyed this book - 5 stars.