This book introduces microprocessors and microcomputers' architecture, programming, and design. It utilizes the popular MC68000 microprocessor as a model to cover the subject. The book is prepared for courses in microprocessors, microcontrollers, computer architecture, microprocessor systems design, and assembly language; in addition, the book is a great reference for practicing engineers, scientists and professionals who may be involved with the design of microprocessor systems, digital systems, VLSI circuits, printed circuit boards, multi-chip modules, and computer hardware circuits and systems.