Integrated Circuits Used 74LS04 74LS00 Procedure Add IC 74LS04 into ICBase-1 (74LS04).Add IC 74LS00 into ICBase-2 (74LS00).Connect Pin-1 (Input) of ICBase-1 (74LS04) to Input-15.Connect Manual clock Port to Pin-2 (Input) of ICBase-2 (74LS00).