const int dataPin=8;
const int latchPin=10;
const int clockPin=11;

void setup() {
  pinMode(dataPin,OUTPUT);
  pinMode(latchPin,OUTPUT);
  pinMode(clockPin,OUTPUT);
}

void loop() {

    int data = 0B00001111;
    digitalWrite(latchPin,LOW);
    shiftOut(dataPin,clockPin,LSBFIRST,data);
    digitalWrite(latchPin,HIGH);
    delay(500);
}