Procedure
- Connect Pin-15 (Input & Output) of ICBase-1 to Input-6.
- Connect Pin-18 (Input & Output) of ICBase-1 to Pin-16 (Input & Output) of ICBase-1.
- Connect Pin-7 (Input & Output) of ICBase-1 to Pin-4 (Input & Output) of ICBase-1.
- Connect Pin-5 (Input & Output) of ICBase-1 to Input-13.
- Connect Input-12 to Pin-3 (Input & Output) of ICBase-1.
- Connect Input-4 to Pin-17 (Input & Output) of ICBase-2.