Integrated Circuits Used 74LS90 74LS08 74LS14 Procedure Add IC 74LS90 into ICBase-1 (74LS90).Add IC 74LS08 into ICBase-2 (74LS08).Add IC 74LS14 into ICBase-3 (74LS14).Connect Clock port of 1Hz frequency to Pin-1 (Input) of ICBase-3 (74LS14).
