I would also recommend The Elements of Computing Systems: Building a Modern Computer from First Principles http://www.amazon.com/The-Elements-Computing-Systems

I would also recommend The Elements of Computing Systems: Building a Modern Computer from First Principles http://www.amazon.com/The-Elements-Computing-Systems-Principles/dp/0262640686/ http://www.amazon.com/The-Elements-Computing-Systems-Princip... http://www.nand2tetris.org/ http://www.nand2tetris.org/