Integrated Circuits Used 74LS05 Description nothing Procedure Add IC 74LS05 into ICBase-2 (74LS05).Connect Input-10 to Pin-5 (Input) of ICBase-2 (74LS05).Connect Pin-3 (Input) of ICBase-2 (74LS05) to Input-13.Connect Input-8 to ICBase-2 (74LS05).