4) (6 pts) Using only an 8 x 3 ROM, implement a logic circuit that has the following truth table. In this implementation, a,b,c,d are the inputs and Y1, Y2, Y3, Y4 are the outputs. Label your inputs and outputs clearly and give the truth table to be stored in this ROM 9 9 a b cd Y1 Y2 Y3 Y4 0000 01 0 0 000 1100 00100110 00111 0 0 010 00 01 0 0100 01100 0 0 011100 0 0 100 0 01 01 10 0110 11 101 00111 1 01 1 101 1 10 00 0 11 11101 0 0 1 111100 01