//this code is designed by sandeep singh for microcontroller kit
//condition - All 7 segment are common anode
#include <REGX51.H>
#define seg_data P0
sbit cs=P1^0;
sbit rd=P1^1;
sbit wr=P1^2;
sbit intr=P1^3;
sbit seg1=P1^4;
sbit seg2=P1^5;
sbit seg3=P1^6;
void delay();
void display_digit(int);
void main()
{
	unsigned int Adcvalue,Adcvalue1,x;
	char ch1,ch2,ch3;
	seg1=seg2=seg3=1;
{
	while(1)
{
	cs=0;
	rd=1;
	wr=0;
	wr=1;
	if(intr==1)
	{
		cs=0;
		rd=0;
	  Adcvalue=P2;
		for(x=0;x<=100;x++){
		if(Adcvalue>9){
    ch1=Adcvalue/100;
    display_digit(ch1);
	  P3=0xfe;		
    delay();
		P3=0xff;
		delay();	
    Adcvalue1=Adcvalue%100;
    ch2=Adcvalue1/10;
    display_digit(ch2);
		P3=0xfd;
		delay();
    P3=0xff;delay();
    ch3=Adcvalue1-(ch2*10);
    display_digit(ch3);
		P3=0xfb;
		delay();
		P3=0xff;
		delay();
     }
    }
	 }
  }
 }
}
void display_digit(int c)
{ switch(c)
	{ case 0: P0=0x3f;
		break; 
		case 1: P0=0x06;
		break;
		case 2: P0=0x5b;
		break; 
		case 3: P0=0x4f;
		break;
		case 4:P0=0x66;
		break; 
		case 5: P0=0x6d;
    break; 
    case 6:P0=0x7d;
    break; 
    case 7:P0=0x07;
    break;
    case 8:P0=0x67;
    break;
    case 9:P0=0x40;
		break;
		return;
 } 
}
void delay()
{
	unsigned int b;
	for (b=0;b<=400;b++);
}