Fundamentals of Digital Electronic Technology is a book that introduces the related knowledge of digital electronic technology. This book is one of the series of teaching materials for electronic technology skills training in higher vocational education, and it is also a textbook for the "Twelfth Five-Year Plan" project of national industrial and information vocational colleges. "Digital Electronic Technology Foundation" has skills training, picture reading exercises, comprehensive training, quick reference to practical materials, summary of this chapter, self-test questions and reference answers, thinking questions and exercises, etc. To meet the needs of readers' practice and training.