lowpass gửi vào
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byte led=13;
byte button1=2;
byte button2=3;
void setup()
{
pinMode(button1, INPUT_PULLUP);
pinMode(button2, INPUT_PULLUP);
pinMode(led, OUTPUT);
}
void loop()
{
if((digitalRead(button1)==LOW)&&(digitalRead(button2)==LOW))
{
digitalWrite(led, HIGH);
}
digitalWrite(led, LOW);
}


