# include < mega16.h > 
# include  < delay.h >
//8 led darim ke be soorate yeki dar mian cheshmak mizanand
void main()
{
DDRA=0XFF;//8 paye ra khoruji mikoim
while(1)
{
PORTA=0XAA;//led haye fard roshan mishavand
delay_ms(500);
PORTA=0X55;//led haye zoj roshan mishavand
delay_ms(500);
}
}