The Motorola MC 68000 family of microprocessors is used in many microcomputers ranging from single board development systems up to professional workstations. It continues to be employed in business and industrial applications. The second edition of this introduction has been totally revised to cover the latest advances in microprocessor technology. It includes recent input/output devices as well as newer 32bit processors and exercises in 68000 programming, solutions and chapter summaries. It summarizes good programming practice through use of modular and structured programming techniques.