The book is written as per the syllabus of the subject Microprocessors and Interfacing Techniques for S. E. (Computer Engineering), Semester-II of University of Pune. It focuses on the three main parts in the study of microprocessors – the architecture, the programming and the system design. The 8086 microprocessor is described in detail along with glimpses of 8088, 80186 and 80188 microprocessors. The various peripheral controllers for 8086/88 are also discussed. Other topics that are related to the syllabus but not explicitly mentioned are included in the appendices. Key Features — Programs are given and the related theory is discussed within the same section, thereby maintaining a smooth flow and also eliminating the need for a separate section on the practical experiments for the subject of Microprocessors and Interfacing Laboratory — Both DOS-based programs as well as kit programs are given — Algorithms and flowcharts are given before DOS-based programs for easy understanding of the program logic