Introduction In the world of computer engineering and electrical engineering, few subjects are as fundamental as digital logic design. It is the language of ones and zeros, the hidden grammar behind every microprocessor, smartphone, and embedded system. Among the many textbooks that have educated generations of engineers, John M. Yarbrough’s Digital Logic: Applications and Design holds a special place. Known for its application-driven approach, clear explanations, and robust problem sets, this book remains a go-to resource for students and practitioners alike.