/*BlinkTurns on an LED on for one second, then off for one second, repeatedly.
This example code is in the public domain.*/
// Pin 13 has an LED connected on most Arduino boards.// give it a name:int led = 13;
// the setup routine runs once when you press reset:void setup() { // initialize the digital pin as an output.pinMode(led, OUTPUT); }
// the loop routine runs over and over again forever:void loop() {digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)delay(1000); // wait for a seconddigitalWrite(led, LOW); // turn the LED off by making the voltage LOWdelay(1000); // wait for a second}

/*BlinkTurns on an LED on for one second, then off for one second, repeatedly.
This example code is in the public domain.*/

// Pin 13 has an LED connected on most Arduino boards.// give it a name:復(fù)制代碼"http://"，這是另一種注釋方法，表示這個符號所在行之后的文字將被注釋掉。

int?led?=?13;

void setup() { // initialize the digital pin as an output.pinMode(led, OUTPUT); }

pinMode(led, OUTPUT);

void loop() {digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)delay(1000); // wait for a seconddigitalWrite(led, LOW); // turn the LED off by making the voltage LOWdelay(1000); // wait for a second}

digitalWrite(led, HIGH);

delay(1000);

digitalWrite(led, LOW);delay(1000);