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Scoop.it!
La pantalla LCD es el componente o dispositivo de salida que nos permite leer la información y mostrarla por pantalla. 
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Scoop.it!
In this tutorial we will see how an LCD screen works and how to use it more easily with the I2C module
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Scoop.it!
Since the use of an LCD requires many microcontroller pins, we will reduce that number using serial communication, which is basically sending "packages" of data one after another, using only two pins of our microcontroller , pins SDA and SCL which are the analog pins A4 and A5 of the Arduino NANO or pro mini.
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