Integrated Circuits Used 74LS86 Procedure Add IC 74LS86 into ICBase-1 (74LS86).Connect Output-3 to Pin-3 (Output) of ICBase-1 (74LS86).Connect Output-2 to Pin-6 (Output) of ICBase-1 (74LS86).Connect Output-1 to Pin-17 (Output) of ICBase-1 (74LS86).