Integrated Circuits Used 74LS08 Procedure Add IC 74LS08 into ICBase-1 (74LS08).Connect Pin-1 (Input) of ICBase-1 (74LS08) to Input-15.Connect Pin-2 (Input) of ICBase-1 (74LS08) to Input-14.Connect Output-14 to Pin-3 (Output) of ICBase-1 (74LS08).