For many years I have recommended "Code" by Charles Petzold and published by microsoft. It's a great bathroom reader, reading on a road trip, or over a spaghett

For many years I have recommended "Code" by Charles Petzold and published by microsoft. It's a great bathroom reader, reading on a road trip, or over a spaghetti dinner. It covers bottom up how computers work, starting out with - well what the heck are numbers and works up from there.