用 C 语言来开发单片机系统软件最大的好处是编写代码效率高、软件调试直观、维护升级方便-Using C language to develop the software of the single chip microcomputer system is the biggest advantage of code efficiency is high, intuitive, convenient maintenance and upgrade software debugging

pic单片机，PIC16-MCD2升级程序，pic单片机，PIC16-MCD2升级程序。-pic microcontroller, PIC16-MCD2 upgrade program, pic microcontroller, PIC16-MCD2 upgrade program.

这个程序是关于80c51单片机的简易计算器升级版的实现-This program is an upgraded version of the simple calculator on 80c51 microcontroller to achieve