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Here is a new thing that I just came up with. This is a traffic light with seven segment displays. The blue LEDs represent the current binary state of the counter, and the other three represent the red, yellow, and green on the traffic light itself. So, with this arrangement, you can see both the traffic light itself and what the control panel might look like inside the control box. Also, if you don't want to have the circuit run automatically, you can flip the SPDT switch and use the push button to change the light manually.
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