Procedure
- Connect Pin-1 (Input & Output) of ICBase-4 to Pin-20 (Input & Output) of ICBase-2.
- Connect Pin-2 (Input & Output) of ICBase-4 to Pin-19 (Input & Output) of ICBase-2.
- Connect Pin-3 (Input & Output) of ICBase-4 to Pin-18 (Input & Output) of ICBase-2.
- Connect Pin-4 (Input & Output) of ICBase-4 to Pin-17 (Input & Output) of ICBase-2.