In recent years, control systems have come to play an important role in the development and in the progress of technology. Control systems help in the management and in the regulation of other systems. They can be found in appliances such as refrigerators, air conditioners, geysers, etc. as well as in industrial plants. They mainly consist of two classes of systems, open loop control systems and closed loop control systems. The ever growing need of advanced technology is the reason that has fueled the research in the field of control systems. The objective of this book is to give a general view of the different areas of this field and its applications. It is appropriate for students seeking detailed information in this area as well as for experts. It will help the readers in keeping pace with the rapid changes in this field.