该工程包含了用51驱动lcd1602的常用函数，如显示字符、字符串、整数、小数等。应用时只需要修改控制引脚即可，已调试成功。-The project includes the drive lcd1602 with 51 commonly used functions, such as character, string, integer, decimal. Only need to modify the application of the control pin can debug succe