Completely revised and updated, Computer Systems, Fourth Edition offers a clear, detailed, step-by-step introduction to the central concepts in computer organization, assembly language, and computer architecture. It invites students to explore the many dimensions of computer systems through a top-down approach to levels of abstraction. By examining how the different levels of abstraction relate to one another, the text helps students look at computer systems and their components as a unified concept. The new Fourth Edition is based on the Pep/8 assembler and simulator, which was designed to teach the basics of the classic von Neumann machine. Pep/8 now includes a new symbolic trace feature that displays global variables and the run-time stack in real time as the student single steps through the program. Throughout the text Warford emphasizes the importance of mastering fundamental computer concepts, which provides a basis for understanding both current and future technology, while also stressing the importance of keen problem solving skills. Computer Systems, Fourth Edition covers all of the core topics in the Architecture and Organization category of the ACM-IEEE Curriculum 2001 Guidelines for Computer Science.

J. 斯坦利·沃法德（J. Stanley Warford），現為美國佩珀代因大學（Pepperdine University）大學計算機科學係教授。Warford教授在進入學術界前是航空工程師，他任教30餘年，曾擔任佩珀代因大學計算機科學係主任。他從倫斯勒理工學院獲得碩士學位，從加州大學洛杉磯分校獲得博士學位。由於傑齣的教學成果，Warford教授獲得瞭Luckman奬。

龔奕利，本科畢業於武漢大學，在中國科學院計算技術研究所獲得博士學位，曾在美國印第安納大學從事博士後工作和美國密歇根大學從事訪問學者工作，現為武漢大學計算機學院副教授。主要研究方嚮為高性能計算和分布式係統，包括雲計算和廣域文件係統。翻譯過《深入理解計算機係統》（第一、二版）等計算機專業書籍。