WIKI Arduino

Código en c (arduino)

 /*
  Blink
  Comentario
*/


// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}

Código en java

/** 
 * The HelloWorldApp class implements an application that
 * simply displays "Hello World!" to the standard output.
 */
class HelloWorldApp {
    public static void main(String[] args) {
        System.out.println("Hello World!"); //Display the string.
    }
}

Código en html

<html>
Esto es <font color="red" size="+1">HTML</font>
</html>

html

Esto es HTML

Código en php

<php>
echo 'Un logo generado por PHP:';
echo '<img src="' . $_SERVER['PHP_SELF'] . '?=' . php_logo_guid() . '" alt="PHP Logo !" />';
</php>