int zero = 0b1000000;
int one = 0b11111001;
int tow = 0b0010010;
int three= 0b0110000;
int four = 0b0011001;
int five = 0b0010010;
int six = 0b0000011;
int seven = 0b1111000;
int eight = 0b0000000;
int nine = 0b0010000;
int x=0;
int displaynum[] = {zero,one,tow,three,four,five,six,seven,eight,nine};
void setup() {
  // put your setup code here, to run once:
  DDRD|=0x7F;
  //abcdefg
  

}

void loop() {
  // put your main code here, to run repeatedly:
  //0=abcdef
  PORTD=displaynum[x];
  delay(1000);
  x++;
  if(x==9){
    for(int j=0;x<10;j++){
  PORTD=displaynum[x];
  delay(1000);
  x--;
  }

  }
  
 /* PORTD=zero;
  delay(1000);
  //1=bc
  PORTD=one;
  delay(1000);
  //2=abged
  PORTD=tow;
  delay(1000);
  //3=abgcd
  PORTD=three;
  delay(1000);
  //4=bcfg
  PORTD=four;
  delay(1000);
  //5=acdfg
  PORTD=five;
  delay(1000);
  //6=cdefg
  PORTD=six;
  delay(1000);
  //7=abc
  PORTD=seven;
  delay(1000);
  //8=abcdefg
  PORTD=eight;
  delay(1000);
  //9=abcdfg
  PORTD=nine;
  delay(1000);
  //8=abcdefg
  PORTD=0b0000000;
  delay(1000);
  //7=abc
  PORTD=0b1111000;
  delay(1000);
   //6=cdefg
  PORTD=0b0000011;
  delay(1000);
  //5=acdfg
  PORTD=0b0010010;
  delay(1000);
  //4=bcfg
  PORTD=0b0011001;
  delay(1000);
  //3=abgcd
  PORTD=0b0110000;
  delay(1000);
  //2=abged
  PORTD=0b0010010;
  delay(1000);
  //1=bc
  PORTD=0b11111001;
  delay(1000);*/



}