multiplexing 7 segment

[suga]

hi...
I have to write program counter for four 7 segment.In that program 1st segment has to display 0 t0 9.after that 2 segment and 1 segment both has to display 0 to 9 after that 1st,2nd,3rd segments has to display 1 to 9.like that.....4 segemnts should display.0001 to 9999 has to display.

 

[aameer]

Which micro controller you are using and what type of 7 segment you are using.. Have you tried to display 0-9 in 7 segment.
This Forum is to help Who is facing difficulty in middle not for ready made Programs..
First try and post the code then sure help you ..

All the best

 

[suga]

ya...I had tried 7 segment 0 to 9.now output is coming from 0000 t0 0099.I have to get 0000 to 9999.and am using 8051 micro controller this is my code

#include<reg51.H>

#define p0 P0
#define p3 P3


 
 unsigned char dig_disp=0;  

sbit dig_ctrl_4=P0^7;        //Declaring control pins of the seven segments
 sbit dig_ctrl_3=P0^6;
 sbit dig_ctrl_2=P0^5;
 sbit dig_ctrl_1=P0^4;
int min2;
 int min1;
 int sec2;
 int sec1;
 char digi_val[10]={0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09};

void delay()        //Function to provide a time delay of approx. 1 second. using Timer 1.
{
    int i;
    for(i=0;i<20;i++)
    {
        TL1=0xFD;
         TH1=0x4B;
         TR1=1;
         while(TF1==0);
         TR1=0;
         TF1=0;
    }
}

void display() interrupt 1        //Function to display the number using seven segmnet multiplexing. For more details refer seven segment multiplexing.
{
    TL0=0x36;        //Reloading Timer0
    TH0=0xf6;
    P0=0xFF;
    dig_ctrl_1 = dig_ctrl_3 = dig_ctrl_2 = dig_ctrl_4 = 0;
    dig_disp++;
    dig_disp=dig_disp%4;
    switch(dig_disp)
    {
        case 0:
        P0=digi_val[sec1];
        dig_ctrl_1 = 1;
        break;
   
        case 1:
        P0=    digi_val[sec2];
       dig_ctrl_2 = 1;
        break;
   
        case 2:
        P0=    digi_val[min1];
        dig_ctrl_3 = 1;
        break;
   
        case 3:
        P0=    digi_val[min2];
        dig_ctrl_4 = 1;
        break;
    }
}

void main()
{
    TMOD=0x11;        //Intialize Timer 0
    TL0=0x36;
    TH0=0xF6;
    IE=0x82;        // Enable Timer 0 interrupt
    TR0=1;        //Start Timer 0
    while(1)        //Start clock
    {
          min2=min1=sec2=sec1=0;
		 for(min2=0;min2<=9;min2++)
	for(min1=0;min1<=9;min1++)

	

       for(sec2=0;sec2<=10;sec2++)
                   
				if(sec2==0)
                 	for(sec1=0;sec1<10;sec1++)
                     
                        delay();
						else if (sec2==1)
						
						for(sec1=1;sec1<=9;sec1++,sec2++)
						delay();


						
						

 						
}
}