void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(4, OUTPUT);
  pinMode(25, INPUT);
  pinMode(26, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  int taster1 = digitalRead(25);
  int taster2 = digitalRead(26);
  Serial.print("Taster 1: ");
  Serial.println(taster1);
  Serial.print("   Taster 2: ");
  Serial.println(taster2);
  delay(100);
}