Design a counter with an external control, x, to count the sequence of even numbers (i.e., 0-2-4-6 and repeat) when the control is 0, and odd numbers (i.e., 1-3-5-7 and repeat) when the control is 1. When the control value changes, the first clock should drive the output to the first value in the appropriate count-e.g., if the circuit has been counting odd numbers and the control switches to 0, the first clock should drive the output to 0 (or if you've been counting even numbers and the control switches to 1, the first clock pulse should make the output 1). Use flip- flops available in the lab cabinet in your design. For input and output circuits, you may use any chip:s available in the lab but you must justify your choice, both of your design and of the flipflops you use. You must demonstrate your counter using your programmed chip and the 7-segment display from Lab 4