An up-down counter is a combination of an up-counter and a down-counter. It can count in both directions, increasing as well as decreasing. The project is about a 4bit up-down counter which starts from '0' and counts up-to '15' and then counts down-to '0'.
Xilinx ISE 14.7 and programmed in VHDL.
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.