$7)$ Implement and test a $4-$bit counter

a$.$ Look at the circuit implementation given on the component document.

b$.$ Open Counter$\_4$bit in Vivado. Change the header comment to make it your own.

c$.$ There is a $4-$bit adder and a $4-$bit register in the implementation. Copy the

Reg$\_$LOAD$\_$CLR$\_4$bit component from your previous lab into your project directory, add it to

your project, and declare it in the architecture.