R1....4= 10Kohms R5....11= 820 ohms R12....21= 15Kohms C1= 100nF 63V MKT C2= 47uF 25V D1.....20= 1N4148 IC1= 4511 IC2= 4028 Q1-10= BD679 DSP1= Display 7 segment Common Cathode S1= 1X10 Step Selector RL1....10= 6V or 12V Relay