Build Your Own Computer: From Scratch, Paperback/Richard Whipple

In this book, I begin with first principles (AND, OR, and NOT logic) and carry out a basic computer design finishing with a working computer using a Field Programmable Gate Array. A knowledge of computer science or electronics is not needed to follow along. Each step will rely on supplied information and simple reasoning. Whether novice or computer professional, knowing how a computer works allows you to take full advantage of its capabilities.