在单片机开发中，经常需要用到1602显示器，从而需要开发者对1602的编程有一定的掌握能力，该程序就是一个如何编程实现1602的显示功能-In the single chip microcomputer development, often need to use 1602 displays, which require developers to 1602 programming has certain master ability, the program is a shows how to implement 1602 programming function