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Ushna AjmalParticipant#include <reg51.h>#define msec 1unsigned int num=0;sbit dig_ctrl_4=P1^3; //declare the control pins of seven segmentssbit dig_ctrl_3=P1^2;sbit dig_ctrl_2=P1^1;sbit dig_ctrl_1=P1^0;unsigned int digi_val[10]={0x40,0xF9,0x24,0x30,0x19,0x12,0x02,0xF8,0x00,0x10};unsigned int dig_1,dig_2,dig_3,dig_4,test=0;unsigned char dig_disp=0;sbit up=P3^5; //up pin to make counter count upsbit down=P3^6; //down pin to make counter count downvoid init() // to initialize the output pins and Timer0{up=down=1;dig_ctrl_4 = 0;dig_ctrl_3 = 0;dig_ctrl_2 = 0;dig_ctrl_1 = 0;TMOD=0x01;TL0=0xf6;TH0=0xFf;IE=0x82;TR0=1;}void delay() //To provide a small time delay{TMOD=0x01;TL0=0x36;TH0=0xF6;TR0=1;while(TF0==0);TR0=0;TF0=0;}void display() interrupt 1 // Function to display the digits on seven segment.{TL0=0x36;TH0=0xf6;P2=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:P2= digi_val[dig_1];dig_ctrl_1 = 1;break;case 1:P2= digi_val[dig_2];dig_ctrl_2 = 1;break;case 2:P2= digi_val[dig_3];dig_ctrl_3 = 1;break;case 3:P2= digi_val[dig_4];dig_ctrl_4 = 1;break;}}void main(){init();while(1){if(up==0&&down==1) //check if up pin is pressed{test++;num=test;dig_4=num%10;num=num/10;dig_3=num%10;num=num/10;dig_2=num%10;dig_1=num/10;if(test==9999)test=0;}if(up==1&&down==0) //check if down pin is pressed{test–;num=test;dig_4=num%10;num=num/10;dig_3=num%10;num=num/10;dig_2=num%10;dig_1=num/10;if(test==0)test=9999;}}}Ushna AjmalParticipant
(104): warning A41: MISSING 'END' STATEMENT
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