This technical learning book provides a broad foundational knowledge of microcontrollers and their connections to microcomputers. After working through the book, you will be able to design controller boards for automation technology as well as development systems for program development. Hardware and software development are closely intertwined. You will learn the programming commands for each functional unit of the controller and write practical user programs. The book is aimed at students of technical schools and universities of applied sciences, as well as interested electronics professionals who want to further their education in the field of microcontroller technology. The complex knowledge of microcontrollers is divided into small, building-block units in this learning book. Examples and exercises reinforce the learned content and allow for self-assessment.