I've posted a new revised version of chapter 2 about Charles Babbage and the Analytical Engine. Many thanks to my friend Duncan Campbell for proof reading the chapter. This chapter is now ready to be mailed out to an agent if they ask. Can you believe in 2011 that quite a few agents want you to send hard copy and an SAE for any reply! I've decided not to contact any of these agents as I doubt they'd want a book on computers.