介绍如何利用Ｉ２Ｃ总线技术设计报警系统，提供了Ｉ２Ｃ总线与电话的接口，以及利用电话线连网，组成区域报警网等方法，并为传统的并行总线系统设计者和用户提供了一种串行总线设计思路。 Describes how to use I2C bus technology to design alarm system, provides I2C bus and telephone interface, as well as the use of telephone line network, regional alarm network and other methods, and for the traditional parallel bus system designers and users with a serial Bus design ideas.