Any one can help me on how to operate this thing correctly?? I want it to count in BCD/UP. I tried to test it and connecting it as ff: (pin 16=9v(Vdd); pin 15=input from a dc supply (3v) with spdt switch; pin 13&12=gnd; pin 10&9= Vdd; pin 8=gnd; pin 5= gnd; pin 3&4=gnd; pin 1=gnd..) Need Reply ASAP!! Im using this in my robot project...