Integrated Circuits Used 74LS08 Procedure Add IC 74LS08 into ICBase-2 (74LS08).Connect Pin-1 (Input) of ICBase-2 (74LS08) to Input-1.Connect Pin-2 (Input) of ICBase-2 (74LS08) to Input-2.Connect Pin-3 (Output) of ICBase-2 (74LS08) to Output-3.