This book includes the following chapters 1.Number Systems and Codes 2. Logic Gates 3. Boolean algebra and logic simplification 4. Design of Combinational Logic Circuits 5. Arithmetic Circuits 6. Decoder, Encoder, Multiplexer, Demultiplexer 7. Sequential Circuit Design 8. Shift Registers 9. Counters 10. A/D and D/A Converters 11. Logic Family