The theory of linear circuits is itself of vast expanse, then comes the ever-expanding subject of electronics. It is a fantastic task to combine them in a single treatise, but the author hopes he has been successful in making an apt and beautiful blend of essential matters.The portion on the theory of linear circuits has been developed from basic ideas to more complex designs. The portion on electronics — both analog and digital, discrete and integrated as well — has been written according to the best possible reasoning and long practical experience.