This is a book about software engineering, more specifically, software construction. However, unlikesimilar books, the fundamental principle driving this book is the idea that high-quality construction requires understanding of the foundations of computer systems. Therefore, we use an approach that puts software construction concepts in context, using both embedded and PC environments, to engage readers and to make clear why these concepts are important. The book provides sufficient coverage of the hardware underpinnings of computer systems to help develop students in electrical, computer science, and engineering, thus, bridging the gap between hardware and software engineering.