Procedure
- Connect Pin-7 (Input & Output) of ICBase-3 to Output-1.
- Connect Pin-13 (Input & Output) of ICBase-3 to Pin-18 (Input & Output) of ICBase-4.
- Connect Output-0 to Pin-11 (Input & Output) of ICBase-4.
- Connect Output-3 to Pin-14 (Input & Output) of ICBase-3.
- Connect Pin-13 (Input & Output) of ICBase-2 to VCC Port.