Understanding Digital Electronics -- Radio Shack
Copyrighted 1978 by Texas Instruments Learning Center
ISBN # 0-89512-017-8
One of a series of "Understanding" Books by Radio Shack.
It is in mint condition -- this book does not look like it has ever been opened.
"This book clearly explains a wide range of digital electroonic devices, circuits and systems -- what they are, what they do and how they can be used -- by making reference to a common digital system -- the handheld calculator."