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int In0=0;
int In1=1;
int In2=2;
int In3=3;
int inval;
void setup()
{
// put your setup code here, to run once:
pinMode(0,INPUT_PULLUP);
pinMode(1,INPUT_PULLUP);
pinMode(2,INPUT_PULLUP);
pinMode(3,INPUT_PULLUP);
Serial.begin(9600);
delay(5000);
Serial.println("start");
}
void loop() {
// put your main code here, to run repeatedly:
inval=digitalRead(In0);
Serial.print("IN0=");
Serial.println(inval);
inval=digitalRead(In1);
Serial.print("IN1=");
Serial.println(inval);
inval=digitalRead(In2);
Serial.print("IN2=");
Serial.println(inval);
inval=digitalRead(In3);
Serial.print("IN3=");
Serial.println(inval);
delay(3000);
}