LED

Published Tuesday, 4 October 2011 by gk in  

#include<reg51.h>
void delay(unsigned int a);
void main()
{
P2=0XFF;
while(1)
{
P2=0xAA;
delay(10);
P2=0x55;
delay(10);
}
}
void delay(unsigned int a)
{
  int i,j;
  for(i=0;i=a;i++)
  for(j=0;j=125;j++);
}

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