// set an array to store character of “0”
unsigned char Text[]={0x00,0x1c,0x22,0x22,0x22,0x22,0x22,0x1c};

void Draw_point(unsigned char x,unsigned char y) { 
  clear_();
  digitalWrite(x+2, HIGH);
  digitalWrite(y+10, LOW);
  delay(1);
} 
void show_num(void) {
  unsigned char i,j,data;
  for(i=0;i<8;i++) {
    data=Text[i];
      for(j=0;j<8;j++) {
        if(data & 0x01)
          Draw_point(j,i);
          data>>=1;
      }
  }
} 
void setup(){
  int i = 0 ;
  for(i=2;i<18;i++) {
    pinMode(i, OUTPUT);
  } 
  clear_();
}

void loop() { 
  show_num();
} 
void clear_(void) {
  for(int i=2;i<10;i++)
    digitalWrite(i, LOW);
      for(int i=0;i<8;i++)
        digitalWrite(i+10, HIGH);
}