此程序是1602液晶的源码，可用keil c 直接编译，适合单片机开发者直接调用，或者初学者学习用。此代码简便强大执行效率很高。-1602 this process is the source of liquid crystal can be used directly keil c compiler, suitable for single-chip developers to directly call, or for beginners to learn. This code is sim