Procedure
- Connect Input-15 to Pin-1 (Input & Output) of ICBase-1.
- Connect Input-15 to Pin-2 (Input & Output) of ICBase-1.
- Connect Input-12 to Pin-3 (Input & Output) of ICBase-1.
- Connect Pin-20 (Input & Output) of ICBase-1 to Pin-6 (Input & Output) of ICBase-2.