You will need the Arduino Board, a 560Ω resistor, and LED and the code example below. We set the pinButton variable as integer 8 and we connect the button at pin 8 on the Board. Then the LED is ...

I made this Arduino 8 bit binary ... each time the momentary push-button is pressed. For example the number 0 is 00000000 in binary so no leds must be ON, number 1 is 00000001 so only the rightmost ...