This book has been written for the person who wishes to learn the principles of modern Basic Electrical Engineering and use those principles to make intelligent and practical use of electronic components, circuits, and instruments. DeAsigned for students who have no previous background in circuit theory or electronics, the text provides a sufficiently broad and thorough exposure to practical electronics to permit the immediate application of electronic circuits and instruments to laboratory and research work. Because these applications involve increasingly sophisticated concepts in signal processing, we have included practical introductions to network theory, linear system theory, modulation and detection, noise, guarding and shielding, and analog and digital instrumentation. Thus, this book can be used either as a textbook for an introductory first course in Basic Electrical Engineering, as a textbook for a one-semester or two-semester "e;Electronics for Scientists and Engineers"e; survey course or as a self-study primer for the professional scientist or engineer who needs additional background in the theory and practice of electronics.