#include <reg51.h>
#include <math.h>
float x;
unsigned char xdata y[100],i;
main()
{
i=0;
for(x=0;x<1;x+=0.01)
y[i++]=P3=tan(x)*100+100;
while(1)
{
 i=0;
 for(x=0; x<1; x+=0.01)
 {tan(x);P3=y[i++];}
}
}