//#include <SPI.h>
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(7, 8); // RX, TX
#define mySerial Serial
#define dataPin  4
#define latchPin 5
#define clockPin 6
unsigned long sa = 88888UL;

const uint8_t digit[] =
{
  //  uGFEDCBA  Segments      7-segment map:
  0b00111111, // 0   "0"          AAA
  0b00000110, // 1   "1"         F   B
  0b01011011, // 2   "2"         F   B
  0b01001111, // 3   "3"          GGG
  0b01100110, // 4   "4"         E   C
  0b01101101, // 5   "5"         E   C
  0b01111101, // 6   "6"          DDD
  0b00000111, // 7   "7"
  0b01111111, // 8   "8"
  0b01101111,  // 9   "9"
  0b00000000
};
void setup() {
  //  Serial.begin(9600);
  mySerial.begin(9600);
  pinMode(latchPin, OUTPUT);
  pinMode(dataPin, OUTPUT);
  pinMode(clockPin, OUTPUT);
  Display(sa);
  delay(1000);
  Display(0);
  mySerial.println();
}

void loop() {
  if (mySerial.available() > 0) // Do we have any data?
  {
    delay(10);
    sa = mySerial.parseInt();
    while (mySerial.available() > 0)mySerial.read();
    Display(sa);
    delay(1000);
  }
}

void Display(uint32_t num) {
  byte seq[5];
  num %= 100000UL; // number bigger as 99999 show only last 5 digits
    mySerial.println(num);
  for (byte i = 0 ; i < 5 ; i++)  { // reverse digit order
    seq[i] = num % 10;
    num /= 10;
  }
  if (!seq[4]) {
    seq[4] = 10;
    if (!seq[3]) {
      seq[3] = 10;
      if (!seq[2]) {
        seq[2] = 10;
        if (!seq[1])seq[1] = 10;
      }
    }
  }
  // Display the data in our array now.
  for (byte i = 0 ; i < 5 ; i++)
    shiftOut(dataPin, clockPin, MSBFIRST, digit[seq[i]] << 1);
  digitalWrite(latchPin, 0);
  digitalWrite(latchPin, 1);
}