In this book, the author provides a comprehensive treatment of the Intel MCS-51 microcontroller. By progressively developing topics, starting with the simple and moving to the complex, he strikes a balanced introduction to the theoretical topics and the design and implementation issues of the MCS-51 microcontroller. Numerous design examples and exercises illustrate the concepts presented. The book is an ideal introduction to microcontroller and microprocessor based design, while containing enough rigour and depth to provide in depth knowledge of the MCS-51 microcontroller. It is intended as a textbook for a first course on microprocessorsU or microcontrollersU, but is also suitable for anyone who needs to learn about the MCS-51 microcontroller. It includes a supplemental CD and will also have a solutions manual available only to adopters of the main text.