// Global Variables
int latchPin = 11;
int clockPin = 9;
int dataPin = 12;

byte LEDs = 0;
int dt = 250;

byte func(byte);

void setup() {
  // put your setup code here, to run once:
  pinMode(latchPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(latchPin, LOW);
  shiftOut(dataPin, clockPin, LSBFIRST, LEDs);
  digitalWrite(latchPin, HIGH);
  Serial.print(LEDs, DEC);
  Serial.print("    ");
  Serial.print(LEDs, BIN);
  Serial.print("    ");
  Serial.println(LEDs, HEX);
  LEDs++;
  delay(dt);
}