// Lab Practice #2.5 : Multiple LED Blink At The Same Time
// define devices pin //

# define LED1 7 // External LED1 on pin 7
# define LED2 8 // External LED2 on pin 8
void setup() 
{
 pinMode (LED1, OUTPUT); // External LED1 as Output
 pinMode (LED2, OUTPUT); // External LED2 as Output
}
void loop() 
{
 digitalWrite (LED1, HIGH); // LED1 On 
digitalWrite (LED2, HIGH); // LED2 On
delay (1000); // Delay for 1 second
digitalWrite (LED1, LOW); // LED1 Off 
digitalWrite (LED2, LOW); // LED2 Off
delay(1000); // Delay for 1 second
}