The author has degrees in mathematics and electrical engineering. He is a professional engineer and member of IEEE. After honorable discharge from U.S. Navy (Seabees), he worked For The U.S. Government and its contractors. His experience also includes teaching mathematics at San Diego City College and developing high-performance computers. He also published three other books "Power, Testing, and Grounding of Electronic Systems", "Control Systems Analysis and Realization", and "Design, Analysis, and Maintenance of Electrical and Electronic Systems in Facilities".