I'm trying to turn an LCD screen ON or OFF upon pushing a button. In this thread, it is mentioned that a digital pin could be used as an output connected to the backlight pin of the LCD in order to turn it on or off. In some tutorials however, it was suggested to use an analog pin. Since I'm only using HIGH or LOW this doesn't matter the least, right?
So, what do you think would be the most effective but simple way to save power? Only cutting the backlight or shutting the whole LCD down and setting it up again? The application is intended to last during a whole day and the screen is only necessary a couple of minutes per day, just to change settings or check process.