说明：  超声波测距1602LCD显示，C编写的51单片机控制电路，主要是一个超声波模块显示程序，包含了几个模块函数：延时函数、判断液晶模块的忙碌状态函数、将模式设置指令或显示地址写入液晶模块函数、指定字符显示的实际地址、将数据(字符的标准ASCII码)写入液晶模块函数、对LCD的显示模式进行初始化设置函数、数据显示及转换程序函数等。
(Ultrasonic Ranging 1602LCD show, C 51 single-chip write control circuit, an ultrasonic module displays the main program module contains several functions: delay function to determine the busy state function LCD module, set the mode to display the address written instructions or LCD module functions, the actual address of the specified character display, the data (the standard ASCII character) LCD module function is written on the LCD display mode set function to initialize the data display and conversion program functions and so on.)