This book covers complete syllabus on the subject "digital electronics" , it is a compulsary subject in all engineering degree and diploma courses. The book includes the following chapters - Number systems and codes - Logic Gates - Boolean Algebra - Design of combinational logic circuits - Arithmetic Circuits - Decoder, Encoder, Multiplexer, De Multiplexer - Sequential Circuit Design - Shift Registers - Counters - A/D and D/A Converters - Logic Family