Problem 1: (20 points) A PN flip-flop has been constructed by using a D Flip-flop, a 2-to-1 multiplexer, NOT, AND, and OR gates as shown in Figure Pl. a) Tabulate the state table (4 points) b) Tabulate the characteristic table (4 points) c) Derive the characteristic equation (4 points) d) Tabulate the excitation table (4 points) e) Show how the PN flip-flop can be converted to a T flip-flop (4 points) 10 D Q 2x1 Y MUX S P CLK Figure P1