Arduino Code For seven Segment Display..

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int A = 7;   //Defines all pins on the Arduino Uno board in order of connection.

int B = 6;

int C = 4;  // DOT is pin 5, not used in this example.

int D = 3;

int E = 2;

int F = 8;

int G = 9;

 

byte num0 = 0x3F;  //Hexadecimal format based upon the A-G, 0-9 Chart in excel and the wiring      // of the segment (refer to the on/off table image below).

byte num1 = 0x6;

byte num2 = 0x5B;

byte num3 = 0x4F;

byte num4 = 0x66;

byte num5 = 0x6D;

byte num6 = 0x7C;

byte num7 = 0x7;

byte num8 = 0x7F;

byte num9 = 0x6F;

 

void on(byte num)   // This function turns on the correct pins to display numbers passed to it         // through the variable "num".

{

  int result = bitRead(num, 0);  // Read the first binary entry in num and stores it in result.

 

      if (result == 1)  // Check to see if this segment should be on.

 

    {digitalWrite(A, HIGH);}   // Turns on the segment.

    else   // Otherwise, it turns it off.

    {digitalWrite(A, LOW);}  // Turns segment off.

 

      result = bitRead( num, 1);  // Same thing for the 6 remaining segments.

 

      if (result == 1)

 

    {digitalWrite(B, HIGH);}

    else

    {digitalWrite(B, LOW);}     

    result = bitRead( num, 2);

 

      if (result == 1)

 

    {digitalWrite(C, HIGH);}

    else

    {digitalWrite(C, LOW);}    

   result = bitRead( num, 3);

 

      if (result == 1)

 

    {digitalWrite(D, HIGH);}

    else

    {digitalWrite(D, LOW);}    

   result = bitRead( num, 4);

 

      if (result == 1)

    {digitalWrite(E, HIGH);}

    else

    {digitalWrite(E, LOW);}

    

   result = bitRead( num, 5);  

      if (result == 1)

    {digitalWrite(F, HIGH);}

    else

    {digitalWrite(F, LOW);}    

    

   result = bitRead( num, 6);

      if (result == 1)

    {digitalWrite(G, HIGH);}

    else

    {digitalWrite(G, LOW);}

  }

void setup() {       // Our setup routine         

  pinMode(A, OUTPUT); // Making all pins outputs

  pinMode(B, OUTPUT);

  pinMode(C, OUTPUT);

  pinMode(D, OUTPUT);

  pinMode(E, OUTPUT);

  pinMode(F, OUTPUT);

  pinMode(G, OUTPUT);

  pinMode(10,OUTPUT);

}

void loop() {   // Loops forever

  on(num0);   // Passing "num0" to the function  "on()" defined above to display "0"

 delay(1000);   // Delay for 1 second to see the "0"

  on(num1);  // Change to "1"

  delay(1000); 

  on(num2);  

  delay(1000);

  on(num3);  

  delay(1000);

  on(num4);  

  delay(1000);

  on(num5);  

  delay(1000);

  on(num6);  

  delay(1000);

  on(num7);

  delay(1000);

  on(num8);  

  delay(1000);  

  on(num9);  

  delay(1000);

}