// ------------- READS51 generated header -------------- 
// module  : C:\Rigel\Reads51\Work\Count\count.c
// created : 18:26:23, Monday, November 12, 2001
// ----------------------------------------------------- 

#include <sfr51.h> 

void pulse(void){
  while(P1_0);
  while(!(P1_0));
}


main(){
  int n;
  n=0;
  while(1)
    {
     while (n<10)
     {
       pulse();
       n=n+1;
     }
     P1_1=1;
     while (n<20)
     {
       pulse();
       n=n+1;
     }
     P1_1=0;
     n=0;
    }
}