在日常生活中，我们对液晶显示器并不陌生。液晶显示模块已作为很多电子产品的通过器件，如在计算器、万用表、电子表及很多家用电子产品中都可以看到，显示的主要是数字、专用符号和图形。在单片机的人机交流界面中，一般的输出方式有以下几种：发光管、LED数码管、液晶显示器。发光管和LED数码管比较常用，软硬件都比较简单，在前面章节已经介绍过，在此不作介绍，本章重点介绍字符型液晶显示器的应用。-In their daily lives, we are no stranger to liquid crystal displays. LCD module has a lot of electronic products as the adoption of devices, such as in calculators, multimeter, electronic forms and a lot of home electronics products could be seen, showing the main figure are, special symbols and graphics. SCM communicate in human-machine interface, the general has the following types of output modes: LED, LED digital tubes, liquid crystal displays. LED and LED digital tube commonly used, hardware and software are relatively simple, in the previous chapters have introduced, and I shall not introduce, this chapter focuses on character liquid crystal display applications.