// Filename = 7segDisp.ino
// Sequences through the seven-segment display numbers 
// 0 through 9 and decimal point
// Common Anode Display: LED Segments turn ON when LOW

int aSeg = 2;   int bSeg = 3;  int cSeg = 4;  int dSeg = 5;  
int eSeg = 6;   int fSeg = 7;  int gSeg = 8;  int dpSeg = 9;

void setup ( ) {
	for (int i=2; i<10; i++) {  pinMode (i, OUTPUT);	} } 

void loop( ) {
	numbers( );	blank( ); }

void blank( ) {
// Delay 1 second; Turn OFF all segments
	delay(1000);
	for (int i=2; i<10; i++) 
	{  digitalWrite (i, HIGH); }
} 

void numbers( ) {

//  0 = a, b, c, d, e, f:	write decimal “0”
	digitalWrite(2, LOW); digitalWrite(3, LOW); 
	digitalWrite(4, LOW); digitalWrite(5, LOW); 
	digitalWrite(6, LOW); digitalWrite(7, LOW);
	blank( );

//  1 = b, c:			write decimal “1”
	digitalWrite(3, LOW); digitalWrite(4, LOW);
	blank( );

//  2 = a, b, d, e, g:		write decimal “1”
	digitalWrite(2, LOW); digitalWrite(3, LOW); 
	digitalWrite(5, LOW); digitalWrite(6, LOW); 
	digitalWrite(8, LOW);
 	blank( );

//  3 = a, b, c, d, g:		write decimal “3”
	digitalWrite(2, LOW); digitalWrite(3, LOW); 
	digitalWrite(4, LOW); digitalWrite(5, LOW); 
	digitalWrite(8, LOW);
 	blank( );

//  4 = b, c, f, g:		write decimal “4”
	digitalWrite(3, LOW); digitalWrite(4, LOW); 
	digitalWrite(7, LOW); digitalWrite(8, LOW); 
	blank( );


//  5 = a, c, d, f, g:		write decimal “5”
	digitalWrite(2, LOW); digitalWrite(4, LOW); 
	digitalWrite(5, LOW); digitalWrite(7, LOW); 
	digitalWrite(8, LOW);
 	blank( );


//  6 = a, c, d, e, f, g:	write decimal “6”
	digitalWrite(2, LOW); digitalWrite(4, LOW); 
	digitalWrite(5, LOW); digitalWrite(6, LOW); 
	digitalWrite(7, LOW); digitalWrite(8, LOW);
 	blank( );

//  7 = a, b, c:		write decimal “7”
	digitalWrite(2, LOW); digitalWrite(3, LOW); 
	digitalWrite(4, LOW);
 	blank( );

//  8 = a, b, c, d, e, f, g:	write decimal “8”
	digitalWrite(2, LOW); digitalWrite(3, LOW); 
	digitalWrite(4, LOW); digitalWrite(5, LOW); 
	digitalWrite(6, LOW); digitalWrite(7, LOW); 
	digitalWrite(8, LOW);
 	blank( );

//  9 = a, b, c, d, f, g:	write decimal “9”
	digitalWrite(2, LOW); digitalWrite(3, LOW); 
	digitalWrite(4, LOW); digitalWrite(5, LOW); 
	digitalWrite(7, LOW); digitalWrite(8, LOW); 
	blank( ); 
}