It is written for the individual who wishes to learn the Microcontroller. The material in this book is appropriate for an introductory course in digital logic in either a computer or an electronic program. It is also appropriate for the self study and as reference for individuals working in this field.At the end of each chapter have review questions, called self tests, which are intended to be a self check of key ideas and concepts. In any subject area, there are many terms and concepts to be learned.