Design the following: a. an up/down wraparound counter with four states (O, 1,2,3) using clocked JK flip-flops. A control signal x is to be used as follows: When x0 the circuit counts forward (up); when x1, backward (down) b. a decimal counter that goes through the sequence 0 1 234567890 using four JK flip flops. Note that there will be a number of don't care conditions in your design