int pinLed [] = {0,1,2,3,4,5,6,7};
int i,j;
void nhapnhay()
{
for (i=0;i<=7;i++)
digitalWrite(pinLed[i], LOW);
delay(300);
for(i=0;i<=7;i++)
digitalWrite(pinLed[i], HIGH);
delay(300);
}
void setup()
{
for(i=0;i<=7;i++)
pinMode(pinLed[i], OUTPUT);
}
void loop()
{
nhapnhay();
}