/*
Programmer = Devil Snare;
Code       = Seven Segment Display;
Date	   = 31/07/2016;
*/

/*
I have connected my seven segment pins of a to g on Arduino pins 2 to 8; 
You have to replace value of variable pin in function display to 'a' pin of your Arduino;
Also you have to replace the i value in the for loop in setup function to match your pins;
*/

byte display[10][7] = 					//Multi-Dimensional Array for numbers 0 to 9 on SSD;
	{ 
		{1, 1, 1, 1, 1, 1, 0},
		{0, 1, 1, 0, 0, 0, 0},
		{1, 1, 0, 1, 1, 0, 1},
		{1, 1, 1, 1, 0, 0, 1},
		{0, 1, 1, 0, 0, 1, 1},
		{1, 0, 1, 1, 0, 1, 1},
		{1, 0, 1, 1, 1, 1, 1},
		{1, 1, 1, 0, 0, 0, 0},
		{1, 1, 1, 1, 1, 1, 1},
		{1, 1, 1, 0, 1, 1, 1},
	};
void display(byte digit)				//Function for displaying the numbers;
{
	byte pin = 2;					//Starting pin of your connected segment 'a' on Arduino;
	for(byte sC = 0; sC < 7; sC++)
	{
		digitalWrite(pin, disp[digit][sC]);
		pin++;
	}
}
void setup()
{
	Serial.begin(9600);				//Setting up the Arduino to communicate with computer at 9600 Baudrate;
	for(int i = 2; i <= 8; i++)			//Declaring segment pins connected from 2 to 8 as output pins;
	{
		pinMode(i, OUTPUT);
	}
}
void loop()						//Checking for input from processing;
{
	if(Serial.available() > 0)
	{
		int display = Serial.read();
		display(display);			//Function call to display function passing the variable display;
	}
}