int latchPin = 5;      // Latch pin of 74HC595 is connected to Digital pin 5
int clockPin = 6;      // Clock pin of 74HC595 is connected to Digital pin 6
int dataPin = 4;       // Data pin of 74HC595 is connected to Digital pin 4
int t=0;
byte leds = 0;         // Variable to hold the pattern of which LEDs are currently turned on or off
int num1[10][7] = {  { 1,1,1,1,1,1,0 },    // 0
                          { 0,1,1,0,0,0,0 },    // 1
                          { 1,1,0,1,1,0,1 },    // 2
                          { 1,1,1,1,0,0,1 },    // 3
                          { 0,1,1,0,0,1,1 },    // 4
                          { 1,0,1,1,0,1,1 },    // 5
                          { 1,0,1,1,1,1,1 },    // 6
                          { 1,1,1,0,0,0,0 },    // 7
                          { 1,1,1,1,1,1,1 },    // 8
                          { 1,1,1,0,0,1,1 }};   // 9

int num[16][1] = {        { 63},    // 0
                          {48 },    // 1
                          { 109 },  // 2
                          { 121 },  // 3
                          {114 },   // 4
                          { 91 },   // 5
                          { 95 },   // 6
                          { 49},    // 7
                          {127 },   // 8
                          { 115 },  // 9 
                          {119 },   //A 
                          {94 },   //b 
                          {15 },   //C
                          {124 },   //D
                          {79 },   //E
                          {71 },   //F
                          } ;
                                            
/*
 * setup() - this function runs once when you turn your Arduino on
 * We initialize the serial connection with the computer
 */
void setup() 
{
  // Set all the pins of 74HC595 as OUTPUT
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  Serial.begin(9600);


}



/*
 * loop() - this function runs over and over again
 */
void loop() 
{
  /*leds = 0;        // Initially turns all the LEDs off, by giving the variable 'leds' the value 0
  updateShiftRegister();
  delay(100);
  for (int i = 0; i < 5; i=i+1)        // Turn all the LEDs ON one by one.
  {
    bitSet(leds, i);                // Set the bit that controls that LED in the variable 'leds'
    updateShiftRegister();
    delay(100);
  }
  digitalWrite(latchPin, HIGH);
    */
    //count up routine
  for (int j = 0; j < 16; j=j+1) {
    //ground latchPin and hold low for as long as you are transmitting
    //digitalWrite(latchPin, LOW);
    //shiftOut(dataPin, clockPin, LSBFIRST, j);
  leds=num[j][0];

   //leds=63;
    //bitSet(leds,3);
    //t=bitSet(leds,j);
    Serial.print( leds);
    Serial.print( " ");
    Serial.print(j);
    Serial.print(" ");
    Serial.println( leds,BIN);
    
    
    updateShiftRegister();
    //return the latch pin high to signal chip that it
    //no longer needs to listen for information
    //digitalWrite(latchPin, HIGH);
    delay(500);
  }
}

/*
 * updateShiftRegister() - This function sets the latchPin to low, then calls the Arduino function 'shiftOut' to shift out contents of variable 'leds' in the shift register before putting the 'latchPin' high again.
 */
void updateShiftRegister()
{
   
   digitalWrite(latchPin, LOW);
   shiftOut(dataPin, clockPin, LSBFIRST, leds);
   digitalWrite(latchPin, HIGH);
}