通讯设置程序，主要是串口通讯子函数和控制数据流。

一个AVR单片机的操作系统，有兴趣就看看吧-an operating system, are interested to see it on

8051单片机控制Max7221实现动态显示数据-8051 Dynamic control of display data Max7221

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FM1702的例子程序 Chip type : ATmega16L Program type : Application Clock frequency : 7.372800 MHz Memory model : Small External SRAM size : 0 Data Stack size : 256-FM1702 examples of procedures Chip type: ATmega16LProgram type: ApplicationClock frequency: 7.372800 MHzMemory model: SmallExternal SRAM size: 0Data Stack size: 256

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头件的中的#ifndef，这是一个很关键的东西。比如你有两个C文件，这两个C文件都include了同一个头文件。而编译时，这两个C文件要一同编译成一个可运行文件，于是问题来了-The first pieces of# Ifndef, this is a very key things. For example, you have two C file, the two C files include the same file size. And compile-time, the two C files to compile together into a run file, then issue the

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该程序能捕捉到单片机发出的正确信号，并显示出来