1602液晶显示器的头文件，主要功能是进行lcd的初始化，及写指令、写数据、检测忙碌状态、读数据、输出字符和字符串子函数程序。主函数中写出显示的光标地址和要显示的字符串就可进行仿真。用于初学lcd的朋友，可进行简单的显示字符串。-1602 LCD header file, the main function is to carry out lcd initialization, and write commands, write data, detect busy state, read data, the output character string Functions and procedures. The main function of the cursor display address and write string to be displayed can be simulated. Lcd friends for beginners, the display can be a simple string.