Integrated Circuits Used 74LS04 74LS153 74LS32 Procedure Add IC 74LS04 into ICBase-1 (74LS04).Add IC 74LS153 into ICBase-2 (74LS153).Add IC 74LS32 into ICBase-3 (74LS32).Connect Input-13 to Pin-7 (Ground) of ICBase-1 (74LS04).
