Integrated Circuits Used 74LS191 74LS04 74LS02 Procedure Add IC 74LS191 into ICBase-3 (74LS191).Add IC 74LS04 into ICBase-4 (74LS04).Connect GND Port to Pin-1 (Input) of ICBase-3 (74LS191).Add IC 74LS02 into ICBase-1 (74LS02).
