To link a standard 16×2 LCD directly with the microcontroller, for instance Arduino, you would need atleast 6 I/O pins to talk to the LCD. However, if you use an LCD module with I2C interface, you ...

and of course the LCD, we can povide our Arduino board with at least a 16×2 alphanumeric LCD display that we will use in all our future applications. This project consumes only three I/O pins, no ...