int latchPinRed = 5;	// Latch pin of 74HC595 is connected to Digital pin 5
int clockPinRed = 6;	// Clock pin of 74HC595 is connected to Digital pin 6
int dataPinRed = 4;	// Data pin of 74HC595 is connected to Digital pin 4

int latchPinGreen = 9;	// Latch pin of 74HC595 is connected to Digital pin 5
int clockPinGreen = 10;	// Clock pin of 74HC595 is connected to Digital pin 6
int dataPinGreen = 8;

byte ledsRed = 0;// Variable to hold the pattern of which LEDs are currently turned on or off
byte ledsGreen =0;
int pb = 2;
int a =0;

/*
 * 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(latchPinRed, OUTPUT);
  pinMode(dataPinRed, OUTPUT);  
  pinMode(clockPinRed, OUTPUT);
  
    pinMode(latchPinGreen, OUTPUT);
  pinMode(dataPinGreen, OUTPUT);  
  pinMode(clockPinGreen, OUTPUT);

pinMode(pb, INPUT_PULLUP);
}


void loop() 
{
a = digitalRead(pb);

if (a == LOW){
  bitSet(ledsRed, 0);
  updateShiftRegister();
}else{
  bitClear(ledsRed, 0);
  updateShiftRegister();
}





}


void updateShiftRegister()
{
   digitalWrite(latchPinRed, LOW);
   shiftOut(dataPinRed, clockPinRed, MSBFIRST, ledsRed);
   digitalWrite(latchPinRed, HIGH);
  
     digitalWrite(latchPinGreen, LOW);
   shiftOut(dataPinGreen, clockPinGreen, MSBFIRST, ledsGreen);
   digitalWrite(latchPinGreen, HIGH);
}