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The following code is the code running in the above screenshot

/*



   Small recursive program that calculates Fibonacci numbers.

  

   This program was originally featured in the "Embedded Systems Magazine"

   April 1989



*/

   

#include <8051.h>

#include <stdio.h>



void putchar(char ch)

{

	TI=0;

	SBUF=ch;

	while(!TI);

}



unsigned fib (int n)

  {

    if (n <= 2) return 1;

    return fib(n-1) + fib(n-2);

  }



unsigned results[11];



main()

  {

    int loop;

    

  	SCON=2;		//set serial mode 0

    for (loop=1; loop < 10; loop++)

      {

        results[loop] = fib(loop);

        printf("fib(%d) = %d\n",loop,results[loop]);

      }

  }

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