plz help me to get 8051 intuction of c code below #include <REGX51.H> void display(unsigned int); sbit control=P2^7; sbit in=P2^0; sbit out=P2^1; void main(void) { unsigned int z=0; //set counter at zero P1=0XC0; //display zero in all 7segnent display P3=0XC0; P0=0XC0; P2=0X03; control=0; while(1) //repeat forever { if(in==0) // is anybody going inside { while(out==1); while(out==0); z++; //increase the counter display(z); //display no of person control=1; //turn on light } else if(out==0) //is anybody coming outside { while(in==1); while(in==0); z--; //decrease the counter display(z); //display no of person if(z==0) // counter=0? { control=0; //turn off light } } } } void display(unsigned int m) { unsigned int digit[10]={0XC0,0XF9,0XA4,0XB0,0X99,0x92,0x82,0XF8,0X80,0X90}; unsigned int i,j,k; i=m%10; j=m/10; k=m/100; j=j-k*10; P1=digit[i]; //display lsb P3=digit[j]; //display middle digit P0=digit[k]; //display msb }