半加器電路練習

void setup()
{
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
Serial.begin(9600);
}
void loop()
{
digitalWrite(2, LOW);
digitalWrite(3, LOW);
Serial.println("A=0, B=0");
delay(2000);
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
Serial.println("A=0, B=1");
delay(2000);
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
Serial.println("A=1, B=0");
delay(2000);
digitalWrite(2, HIGH);
digitalWrite(3, HIGH);
Serial.println("A=1, B=1");
delay(2000);
}