int segmentPins[] = {2, 3, 4, 5, 6, 7, 8}; 
int commonAnodePin = 9; 

int digit [10] = { 
B11000000, //0
B11111001, //1
B10100100, //2
}; 

void setup() { 
	for (int i = 0; i < 7; i++) { 
		pinMode(segmentPins[i], OUTPUT); 
	}
	pinMode(commonAnodePin, OUTPUT); 
} 

void loop() { 
	for (int i=0; i<3; i++) { 
		displayDigit(i); 
		delay(1000); 
	} 
} 

void displayDigit(int number) { 
	digitalWrite(commonAnodePin, LOW); 
	for (int i = 0; i <7; i++) { 
		digitalWrite(segmentPins[i], bitRead(digit[number], i)); 
	}
	digitalWrite(commonAnodePin, HIGH);
}