Procedure
- Connect Pin-7 (Ground) of ICBase-3 (74LS04) to GND Port.
- Connect Pin-20 (VCC) of ICBase-3 (74LS04) to VCC Port.
- Connect Pin-4 (Output) of ICBase-3 (74LS04) to Output-1.
- Add IC 74LS04 into ICBase-3 (74LS04).
- Connect Input-4 to Pin-1 (Input) of ICBase-3 (74LS04).