Segment

#include <IRremote.h>
#include<MsTimer2.h>

#define Ssymbol 4
#define digit1 5
#define digit2 6
#define RECV_PIN 7
#define RELAY 8
#define buzzer 13
#define clock A4
#define data A5

IRrecv irrecv(RECV_PIN);
decode_results results;
unsigned long key_value = 0;

int count = 0;

byte zero  = B00010010;
byte one   = B11011110;
byte two   = B00010101;
byte three = B10010100;
byte four  = B11011000;
byte five  = B10110000;
byte six   = B00110000;
byte seven = B11010110;
byte eight = B00010000;
byte nine  = B11010000;
byte clrs  = B11111111;
byte night  = B00000001;
byte timer  = B11111110;

byte Digit[] = {B00010010, B11011110, B00010101, B10010100, B11011000, B10110000, B00110000, B11010110, B00010000, B11010000};
byte symbol[] = {B00000001, B11111110};
int i, j;
int DELAY = 5;
int unit, tens;


void setup() {

  Serial.begin(9600);

  irrecv.enableIRIn();
  irrecv.blink13(false);

  pinMode(clock, OUTPUT);
  pinMode(data , OUTPUT);
  pinMode(digit1, OUTPUT);
  pinMode(digit2, OUTPUT);
  pinMode(RELAY, OUTPUT);
  pinMode(buzzer, OUTPUT);
  MsTimer2::set(5, setDigit_);
  MsTimer2::start();
}

void loop() {
  if (irrecv.decode(&results)) {

    if (results.value == 0XFFFFFFFF)
      results.value = key_value;

    if (results.value == 0x8800347) {
      Serial.println("Button 1");
      beep();
      unit = 8;
      tens = 8;
    }
    if (results.value == 0x88C0051) {
      Serial.println("Button 2");
      beep();
      unit = 0;
      tens = 0;
    }
    if (results.value == 0x88C000C) {
      Serial.println("Button 3");
      beep();
      digitalWrite(RELAY, HIGH);
      unit = 6;
      tens = 6;
    }
    key_value = results.value;
    irrecv.resume();
  }
}

int setDigit_() {

  //  int unit, tens;
  //  unit = D % 10;
  //  tens = D / 10;
    Serial.println("SET DIGIT");
  digitalWrite(digit2, LOW);
  shiftOut(data, clock, LSBFIRST, Digit[tens]);
  digitalWrite(digit1, HIGH);
  delay(DELAY);
  digitalWrite(digit1, LOW);
  shiftOut(data, clock, LSBFIRST, Digit[unit]);
  digitalWrite(digit2, HIGH);
  delay(DELAY);
}

int beep() {
  digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(100);                       // wait for a second
  digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
  delay(100);
}