Add More topics.... 11.Digital Arithmetic Operations and Circuits 12.Counters 13.Shift Registers 14.Code Converters and Multiplexers 15.Memory and Storage 16.Programmable Logic Device 17.Interfacing to the Analog World 18.Logic Families and Their Characteristics 19.Integrated Circuit Technologies 20.MSI Logic Circuits 21.Digital System Projects Using HDL 22.Digital Design etc etc.......