QUESTION 1 20 points A combinational circuit is divided into two sub-circuits N1 and N2 as shown. The sub-circuit Nl performs the division of the binary number ABC by two. The outputs E and represent the quotient (result of the division and F represents the remainder. The sub-circuit N2 has Z as an output. N2 N, E B- B C 1. Write the expression of Z in terms of D, E, and F as sum of product. (5 marks) 2. Complete the truth table of the circuit. (5 marks) ABC FED Z 3. Write D. E and F as minterms expansion. (5 marks) 4. Write Z as Maxterms expansion in terms of A, B, and C