You might also like the book CODE: The Hidden Language of Computer Hardware and Software http://www.charlespetzold.com/code/index.html http://www.charlespetzold

You might also like the book CODE: The Hidden Language of Computer Hardware and Software http://www.charlespetzold.com/code/index.html http://www.charlespetzold.com/code/index.html It starts with sending signals using flashlights and follows the evolution of computers from the ground up (mostly hardware).