Data Sheet

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#include "Arduino.h"
const int s1_pin = 3;
const int s2_pin = 2;
void setup(){
pinMode (s1_pin, INPUT);
pinMode (s2_pin, INPUT);
Serial.begin (9600);
}
void loop (){
if(digitalRead (s1_pin)){
Serial.println ("buttom_1 have been hold down!");
}
delay (50);
if(digitalRead (s2_pin)){
Serial.println ("buttom_2 have been hold down!");
}
delay (50);
}