Read Switch and Display on LED

objectif :  Blink the LED when the Switch Button is press 

Arduino Read Switch and Display on LED.JPG


digital 2 is declared as the input port to read the values from the switch.
digital 13 is the output LED for our board in this experiment
wait 0.1 is the delay timing


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Our experiment can be resume as :

when Button is clicked forever  when (if)  digital 2  send the value 1 to the digital 13 ,
it receives it and ON the LED for 0.1 sec then OFF when it is released
hence digital 13 receives 0 for 0.1 sec
and it will keep repeating until stop is clicked