Design an up / down counter with four states (0, 1, 2, 3) using clocked J-K flip-flops. A control signal x is used as follows: When x = 0 the machine counts forward (up), when x = 1, backward (down).
also determine the following:
1. State Table
2. State Diagram
3. Flip-Flop Excitation Tables
4. K-Map Simplification and resulting diagram