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Tuesday 4 November 2014

Arduino Program to Display 0 to 99 in Two SSDs - 7490 + Two 4511 ICs (Part 8 of 9)

by realfinetime  |  in Seven Segment Display at  12:21

<<<<  Read Previous Part (Part 7)

          Arduino program to display from 0 to 99 in one second delay, in the seven segment displays, is given below. Complete the circuit and upload the following program to your arduino board.

int INPUT_A = 13;
int R01_and_R02 = 12;
int LE1 = 10;
int LE2 = 9;

int i=0, j=0, k=0, first_digit=10, second_digit=10;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(INPUT_A, OUTPUT);     
  pinMode(R01_and_R02, OUTPUT);
  pinMode(LE1, OUTPUT);
  pinMode(LE2, OUTPUT);
}

// the loop routine runs over and over again forever:
void loop() { 
  for(k=0;k<second_digit;k++)
  {
    for(j=0;j<first_digit;j++)
    {
      digitalWrite(R01_and_R02, HIGH);  
      digitalWrite(LE1, LOW);
      digitalWrite(R01_and_R02, LOW);
      for(i=0;i<k;i++)
      {
        digitalWrite(INPUT_A, HIGH);
        digitalWrite(INPUT_A, LOW);   
      }
      digitalWrite(LE1, HIGH);
  
      digitalWrite(R01_and_R02, HIGH);  
      digitalWrite(LE2, LOW);
      digitalWrite(R01_and_R02, LOW);
      for(i=0;i<j;i++)
      {
        digitalWrite(INPUT_A, HIGH);
        digitalWrite(INPUT_A, LOW);   
      }
      digitalWrite(LE2, HIGH);  
      delay(1000); 
    }
  }
}

Output will be 0 - 99 displayed in the seven segment displays.


Next : Watch the Video Demonstration >>>>

1 comment:

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