Procedure
- Connect Pin-7 (Input & Output) of ICBase-2 to GND Port.
- Connect Pin-1 (Input & Output) of ICBase-2 to Input-0.
- Connect Pin-20 (Input & Output) of ICBase-2 to VCC Port.
- Connect VCC Port to Pin-1 (Input & Output) of ICBase-2.
- Connect Pin-10 (Input & Output) of ICBase-3 to Pin-7 (Input & Output) of ICBase-1.