A clock with two D flip-flops.
Multisim design can be found here.
Video of the project in action can be found here.

As a part of building our knowledge on electronics, I independently created a breadboard circuitry of a 4-bit counter, which was the project objective. First, I designed a circuit using Multisim, and implemented it on a breadboard. In this project, I used my knowledge on series and parallel circuits, to practical use, creating my first circuit. I learned what an integrated circuit was, and used 2 D flip-flops to handle byte steps and storage, displayed with LEDs on the breadboard. I also learned how to use NI circuit software to send digital signals to my breadboard, showing byte cycling periodically. I plan to work on this further, to automate it with a constant power supply, instead of a digital signal, and other more complex digital electronics projects.