Integrated Circuits Used 74LS11 74LS04 74LS32 Procedure Add IC 74LS11 into ICBase-1 (74LS11).Add IC 74LS04 into ICBase-2 (74LS04).Add IC 74LS32 into ICBase-3 (74LS32).Connect Pin-1 (Input) of ICBase-2 (74LS04) to Input-0.