#include"reg51.h"
sbit P1_0=P1^0;
sbit P1_1=P1^1;
sbit P2_0=P2^0;
sbit P2_1=P2^1;
void delay(unsigned int i);
void main()
{
bit left,right;
while(1)
{
left=P2_0;
right=P2_1;
P1_0=left;
P1_1=right;
delay(200);
P1_0=1;
P1_1=1;
delay(200);
}
}
void delay(unsigned int i)
{
unsigned int j,k;
for(k=0;k<i;k++)
for(j=0;j<500;j++);
}
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