Well, it is true, you can do this! Leaving the joke aside, let me show how you can achieve this. You will need the Arduino Board, a 560Ω resistor, and LED and the code example below. Related products: ...

The code (Arduino sketch) allows push button increment of the counter from 0 to 9. The whole circuit can be powered from a standard 9V PP3/6F22 battery, or from any suitable Arduino power adaptor. ...