part4\bdc_7seg.vhd .....\circuit_a.vhd .....\circuit_b.vhd .....\comparator.vhd .....\full_adder.vhd .....\lab2part4.qpf .....\lab2part4.qsf .....\lab2part4.vhd .....\mux_4bit_2to1.vhd part4