This device is an example of the serial protocol and can be used with other electronic devices to communicate through serial communication. The I2C is a serial communication protocol, it has two terminals, one is of the clock and the other is for serial data communication.
In this write-up, the I2C is explained, and also the method by which it is used with LCD to interface it with Arduino is explained. The I2C uses serial communication using the SDA and SCL terminals of Arduino and transfers the data on an LCD. We know that if we interface LCD with Arduino by connecting 4 data lines, it needs at least six digital I/O pins for a successful connection. The LCD can be interfaced with Arduino Uno using the I2C which will utilize fewer Arduino digital I/O pins.
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