I 2 C as many of you know, is a simple serial interface for many peripheral devices ... The author uses a pretty standard to most of us Arduino, with software written in AVR C and a nifty little ...
Standards like UART, USB2, I2C, SPI, PS/2, CAN, RS232, SWD (an interface to program MCUs), RS485, DMX, and many others, all are a testament to that. In particular, I2C is such a powerful standard ...