Question #3 (6 marks): Design a priority encoder with three inputs W, X, Y, Z, and three outputs A, B and C. The truth table for the circuit is shown below. a) [2 marks] Drive the minimized logic equations for A and B (use Karnaugh maps). b) [2 marks] Draw the logic circuit diagram for A and B. W X Y ZI 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0 0 1 1 1 1 0 0 0 1 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 A B C 0 0 0 0 0 1 0 1 0 0 1 0 0 1 1 0 1 1 0 1 1 0 1 1 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 0 Question #7 (6 marks): Construct a ROM memory with the size 1024 x 8 ROM, knowing that in the lab, you only have ROM chips with the size of 256 x 8 chips with an enable input. You can construct the memory with the given chips and a decoder. a) [1 mark] How many ROM chips are needed to construct the required memory? b) [1 mark) How many address lines are needed for the required memory? c) [1 mark] How many address lines in one chip? d) [1 mark] What is the size of the decoder used? (number of inputs and outputs) e) [2 mark] Draw the organization of the constructed memory, showing the external connections necessary to construct the required memory