Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The best book that tells you exactly how computers work

This is definitely the best book I have ever read on how computers work. I could not put it down just after the first chapter. The author is definitely a master in how he builds up the material. He makes no assumptions that the reader may already know something, but explains everything in details and in a very easy to understand way even for non technical people. In a way this is the book that I have been looking for for a long long time. As a programmer and a non CS graduate, this book has enabled me to understand in a great detail how a computer works and why it does some things a certain way. To quote another commenter "Charles Petzold (1999), Code: The Hidden Language of Computer Hardware and Software does a much better job than anything else I have ever seen in explaining computers--what they really are, and how they really work."