This textbook covers digital design, fundamentals of computer architecture, and assembly language. Intended for an undergraduate course, the book starts by covering basic number systems and coding, basic knowledge in digital design, and components of a computer. It goes on to cover topics such as information representation in computing; Boolean algebra and logic gates; sequential logic; input/output; and CPU performance. The author also covers ARM architecture and ARM assembly language, including how the ARM processor is used in a variety of devices such as cell phones, digital TV, automobiles, routers, and switches. The book contains a set of laboratory experiments related to digital design using LogicWorks software; in addition, each chapter features objectives, summaries, key terms, review questions and problems. The book is targeted to students majoring Computer Science, Information System and IT and follows the ACM/IEEE 2013 guidelines. Comprehensive textbook covering digital design, computer architecture, and ARM architecture and assembly Covers basic number system and coding, basic knowledge in digital design, and components of a computer Features laboratory exercises in addition to objectives, summaries, key terms, review questions, and problems in each chapter.