Hand gesture based learning and emergency for mute people

#include<reg51.h>

sbit ALE=P1^4;
sbit SOC=P1^0;
sbit OE=P1^2;
sbit EOC=P1^1;
sbit SET0=P1^5;
sbit SET1=P1^6;
sbit SET2=P1^7;
sbit CLOCK=P1^3;

void tx(unsigned char num)
{ 
  SBUF = num;
  while(TI == 0);
  TI = 0;
}

void clock_adc()
{
 unsigned int b;
 for(b=0;b<=5000;b++)
 CLOCK=~CLOCK;
 }

void delay()
{
unsigned int z;
for(z=0;z<8000;z++);
}

 void main()
{ 
unsigned char first_finger,second_finger,third_finger,fourth_finger,thumb;
 SCON=0x50;
  TMOD=0x20;
  TH1=0xfd;
  TR1=1;
  SOC=0;
  OE=0;
  EOC=1;
  
while(1)
{				   	
tx('A');
delay();

SET2=0;SET1=1; SET0=1;      //for the select line
ALE=1;    SOC=1;
clock_adc();
SOC=0;   ALE=0;
clock_adc();
while(EOC==0);
OE=1;
first_finger=P2;
tx(((first_finger/100)%10)+0x30);	 
delay();
tx(((first_finger/10)%10)+0x30);	 
delay();
tx((first_finger%10)+0x30);
delay();


SET2=0;SET1=1; SET0=0;      //for the select line
ALE=1;    SOC=1;
clock_adc();
SOC=0;   ALE=0;
clock_adc();
while(EOC==0);
OE=1;
second_finger=P2;
tx(((second_finger/100)%10)+0x30);
delay();
tx(((second_finger/10)%10)+0x30);	 
delay();
tx((second_finger%10)+0x30);
delay();

SET2=0;SET1=0; SET0=1;      //for the select line
ALE=1;    SOC=1;
clock_adc();
SOC=0;   ALE=0;
clock_adc();
while(EOC==0);
OE=1;
third_finger=P2; 	   
tx(((third_finger/100)%10)+0x30);	
delay();
tx(((third_finger/10)%10)+0x30);
delay();
tx((third_finger%10)+0x30);
delay();
	
SET2=0;SET1=0; SET0=0;      //for the select line
ALE=1;    SOC=1;
clock_adc();
SOC=0;   ALE=0;
clock_adc();
while(EOC==0);
OE=1;
fourth_finger=P2; 			
tx(((fourth_finger/100)%10)+0x30);
delay();
tx(((fourth_finger/10)%10)+0x30);	 
delay();
tx((fourth_finger%10)+0x30);
delay();

SET2=1;SET1=0; SET0=0;      //for the select line
ALE=1;    SOC=1;
clock_adc();
SOC=0;   ALE=0;
clock_adc();
while(EOC==0);
OE=1;
thumb=P2; 	   
tx(((thumb/100)%10)+0x30);	
delay();
tx(((thumb/10)%10)+0x30);
delay();
tx((thumb%10)+0x30);
delay();
}
}