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 only need 2 lines to process the display information. Now a days, ...

When an air quality display project needed a display, [Inderpreet] looked into small character-based LCDs. [Inderpreet’s] chosen LCD used an I2C interface, which was new to him. Rather than shy ...

The I2C bus or TWI (Two Wire Interface ... connected in series to pin A4 and A5 on the Arduino board. The two 4.7K pull-up resistors must be used when using I2C communication. We use the serial ...