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