This book is compiled based on the curriculum, therefore, the additional explanation relating to the question needs to be added in the classroom. Basic knowledge about electronics is necessary for cadets, especially for engineering study programs as their preparation before undergoing sea practice at merchant ship, if they face some electronic equipment, they will be familiar and able to analyze the problem principally if there is any fundamental problem.

In preparing provision mastery of basic electronics theory, it also needs support skills lessons at the laboratory such as practice. In compiling this book, we have divided it into seven chapters and each chapter has different loading material so that one chapter needs one-two time meeting allocation,