Given a ring counter that goes through the following sequence: 000 100 110 111 011 001 000 100 ..... The counter has an input X which works like an enable for the circuit. That means when X=1 the circuit counts, but when X=0 the circuit stops at the last number it reached. a) Give a complete design procedure using JK flip-flops and simulate it using EWB or Logisim. b) Implement and test your design on the circuit board.