Modern computer technology requires professionals of every computing specialty to understand both hardware and software. The interaction between hardware and software at a variety of levels offers a framework for understanding the concepts that are the basis for current computers. Computer Organization and Design, the leading, award-winning textbook from Patterson and Hennessy, used by more than 40,000 students per year, continues to present the most comprehensive and readable introduction to this core computer science topic. Improvements to the new 6^th edition, including new sections in each chapter on Domain Specific Architectures (DSA) and updates of all of the real-world examples in the book, will help to keep it fresh and relevant for a new generation of students.