液晶显示器件（LCD）是一种高新技术的基础元器件，它是利用液晶的各种电光效应，把液晶对电场、磁场、光线和温度等外界条件的变化，在一定条件下转换为可视信号而制成的显示器。液晶显示器具有低电压、低功耗的特点，与CMOS集成电路相匹配。文章通过对液晶显示模块12232F的具体分析研究，给出了该液晶显示模块与单片机AT89S52如何实现并串口的连接方案。

Liquid Crystal Display (LCD) is a high-tech infrastructure components. It uses the liquid crystal electro-optic effect, LCD put on electric and magnetic fields. light and temperature changes in the external conditions under certain conditions for the conversion made visual signals to the display. LCD with a low voltage, low power consumption, and CMOS IC match. Through the common LCD module 12232F specific analysis, given the LCD module with SCM AT89S52 how to achieve serial link.