7 Segment Display

Arduino Code:
---------------Arduino---------------
void setup() {
  Serial.begin(9600);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
  digitalWrite(9, 0);
}
void loop()
{
  int serialdengelen = Serial.read();
  if (serialdengelen == '0')
  {
    sifir();
  }
   if (serialdengelen == '1')
  {
    bir();
  }
   if (serialdengelen == '2')
  {
    iki();
  }
   if (serialdengelen == '3')
  {
    uc();
  }
   if (serialdengelen == '4')
  {
    dort();
  }
   if (serialdengelen == '5')
  {
    bes();
  }
   if (serialdengelen == '6')
  {
    alti();
  }
   if (serialdengelen == '7')
  {
    yedi();
  }
   if (serialdengelen == '8')
  {
    sekiz();
  }
   if (serialdengelen == '9')
  {
    dokuz();
  }
}
void dokuz ()
{
   digitalWrite(2, 1);
 digitalWrite(3, 1);
 digitalWrite(4, 1);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 1);
 digitalWrite(8, 1);
}
void sekiz ()
{
 digitalWrite(2, 1);
 digitalWrite(3, 1);
 digitalWrite(4, 1);
 digitalWrite(5, 1);
 digitalWrite(6, 1);
 digitalWrite(7, 1);
 digitalWrite(8, 1);
}
void yedi ()
{
  digitalWrite(2, 1);
 digitalWrite(3, 1);
 digitalWrite(4, 1);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 0);
 digitalWrite(8, 0);
}
void alti ()
{
  digitalWrite(2, 1);
 digitalWrite(3, 0);
 digitalWrite(4, 1);
 digitalWrite(5, 1);
 digitalWrite(6, 1);
 digitalWrite(7, 1);
 digitalWrite(8, 1);
}
void bes ()
{
  digitalWrite(2, 1);
 digitalWrite(3, 0);
 digitalWrite(4, 1);
 digitalWrite(5, 1);
 digitalWrite(6, 0);
 digitalWrite(7, 1);
 digitalWrite(8, 1);
}
void dort ()
{
 digitalWrite(2, 0);
 digitalWrite(3, 1);
 digitalWrite(4, 1);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 1);
 digitalWrite(8, 1);
}
void uc ()
{
 digitalWrite(2, 1);
 digitalWrite(3, 1);
 digitalWrite(4, 1);
 digitalWrite(5, 1);
 digitalWrite(6, 0);
 digitalWrite(7, 0);
 digitalWrite(8, 1);
}
void iki ()
{
 digitalWrite(2, 1);
 digitalWrite(3, 1);
 digitalWrite(4, 0);
 digitalWrite(5, 1);
 digitalWrite(6, 1);
 digitalWrite(7, 0);
 digitalWrite(8, 1);
}
void bir ()
{
 digitalWrite(2, 0);
 digitalWrite(3, 1);
 digitalWrite(4, 1);
 digitalWrite(5, 0);
 digitalWrite(6, 0);
 digitalWrite(7, 0);
 digitalWrite(8, 0);
}
void sifir ()
{
  digitalWrite(2, 1);
 digitalWrite(3, 1);
 digitalWrite(4, 1);
 digitalWrite(5, 1);
 digitalWrite(6, 1);
 digitalWrite(7, 1);
 digitalWrite(8, 0);
}
------------------------------------------------------------

All Files: (Connection,Arduino Code,C# Project Source Code)

http://s3.dosya.tc/server30/2qG2pR/7SegmentDisplay.rar.html
http://dosya.co/80f2a93e854c29cc/7_Segment_Display.rar