#include<reg51.h>
sbit wr = P3^4;
sbit intr = P3^3;
void msdelay(unsigned int time);
void main()
{
intr=1;
wr = 0;
msdelay(10);
wr=1;
P1=P2;
}
void msdelay(unsigned int time)
{
unsigned int i,j;
for(i=0;i<time;i++)
for(j=0;j<1275;j++);
}