Shuqin Lou & Chunling Yang 
Digital Electronic Circuits [PDF ebook] 
Principles and Practices

This book presents three aspects of digital circuits: digital principles, digital electronics, and digital design. The modern design methods of using electronic design automation (EDA) are also introduced, including the hardware description language (HDL), designs with programmable logic devices and large scale integrated circuit (LSI).The applications of digital devices and integrated circuits are discussed in detail as well.