Integrated Circuits Used 74LS76 Procedure Add IC 74LS76 into ICBase-1 (74LS76).Add IC 74LS76 into ICBase-2 (74LS76).Connect GND Port to Pin-7 (Input) of ICBase-1 (74LS76).Connect GND Port to Pin-7 (Input) of ICBase-2 (74LS76).