自己画的基于ZLG7290的I2C通讯的人机扩展应用原理图，想利用ZLG7290 I2C通讯的朋友可以下来参考参考-Their paintings of the I2C-based communication ZLG7290 to expand the application of human-machine schematic, I would like to use a friend ZLG7290 I2C communications can refer to reference it!