#define sw1 digitalRead(12)

int seg[]={27,26,25,33,32,2,4};
int tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7c,0x07,0x7f,0x67,0x00};

int s1=23;
int s2=5;
int s3=18;
int s4=19;
int i,j,k=0,s,t,f;
unsigned current_time;
int t1;
void setup()
{
  pinMode(s1, OUTPUT);
  pinMode(s2, OUTPUT);
  pinMode(s3, OUTPUT); 
  pinMode(s4, OUTPUT);

for(i=0;i<7;i++)
{
  pinMode(seg[i], OUTPUT);
  digitalWrite(seg[i], HIGH);
}

}

void display(int a)
{
  for(i=0;i<7;i++)
  {
    if(a%2==0)
    {
      digitalWrite(seg[i], HIGH);
    }
    else
    {
      digitalWrite(seg[i], LOW);
    }
    a=a/2;
  }
}
void out()
{
  digitalWrite(s4,1);
  digitalWrite(s3,0);
  digitalWrite(s2,0);
  digitalWrite(s1,0);
  display(tab[k%10]);
  delay(1);
  display(tab[10]);

  digitalWrite(s4,0);
  digitalWrite(s3,1);
  digitalWrite(s2,0);
  digitalWrite(s1,0);
  display(tab[k/10%10]);
  delay(1);
  display(tab[10]);

  digitalWrite(s4,0);
  digitalWrite(s3,0);
  digitalWrite(s2,1);
  digitalWrite(s1,0);
  display(tab[k/100%10]);
  delay(1);
  display(tab[10]);

  digitalWrite(s4,0);
  digitalWrite(s3,0);
  digitalWrite(s2,0);
  digitalWrite(s1,1);
  display(tab[k/1000]);
  delay(1);
  display(tab[10]);
}

void loop()
{
  k++;
  if(k>9999)k=0;
  for(t=0;t<100;t++)  out();
}