I2C总线在多机通信中的应用介绍了I2C总线的结构、工作原理、数据传输方式，讨论了基于I2C总线的多机通信软硬件设计，实现了程控交换多机通信调度指挥系统。 -I2C bus in the multi-machine communication introduced I2C bus structure, working principle, data transmission methods are discussed based on the I2C bus multi-machine co