The National Semiconductor Audio Handbook 1977 is a textbook written by the National Semiconductor Corporation and published by Audio Amateur, Incorporated. It focuses on the subject area of technology and engineering, specifically in the field of electronics and semiconductors. The book is presented in English language and is in trade paperback format, making it a valuable resource for students and professionals interested in audio and radio technology. With a specific focus on National Semiconductor products, this handbook offers detailed information and insights into the world of semiconductors.