Integrated Circuits Used 74LS153 Procedure Connect VCC Port to Pin-20 (VCC) of ICBase-1 (74LS153).Connect GND Port to Pin-7 (Output) of ICBase-1 (74LS153).Connect Input-15 to Pin-6 (Input) of ICBase-1 (74LS153).Add IC 74LS153 into ICBase-1 (74LS153).