1. A combinational network is divided into two sub-networks, N1 and N2, shown in FIGURE Q1 a. Design sub-network Ni such that the output D, E, and F are as shown in TABLE Q1 [10 marks] b. If input combinations of ABC 011 and ABC 110 will never occur, change as many of the values D, E, and F to don't cares as you can without changing the output Z. (If either E or F but not both can be a don't care, arbitrarily choose E to be the don't care) [4 marks] Does sub-network N1 changed if condition stated in part (b) occur? If it does, re-design sub-network N1 c. [6 marks] TABLE Q1 ABC DEF 0 0 0110 0 01 01 0 0 10 0 01 01 1 0 0 0 1 0 0 01 0 1 01 0 01 1 1 0 0 01 11 1 1 0 1 FIGURE Q1