Integrated Circuits Used 74LS00 Procedure Add IC 74LS00 into ICBase-1 (74LS00).Connect Pin-3 (Output) of ICBase-1 (74LS00) to Output-11.Connect Output-14 to Pin-3 (Output) of ICBase-1 (74LS00).Connect Pin-4 (Input) of ICBase-1 (74LS00) to Input-13.