This revision is a succinct introduction to basic electric circuit analysis with balanced emphasis on time domain and frequency domain methods. The Fifth Edition has retained the format and features that have been well received in previous editions, while being thoroughly revised to reflect recent trends and advances. New features include presentation of the op amp as a versatile linear circuit element, the highly motivational use of op amps with SPICE for exploratory active circuit design, and new chapter summaries throughout. Students on introductory circuit theory analysis courses should benefit from this book.