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Update README.md
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@ggangliu
ggangliu authored Mar 24, 2022
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Expand Up @@ -11,4 +11,6 @@ CPU的bootloader程序将存储在ROM中，也是CPU启动后运行的第一个
## RAM
由于程序运行过程中需要堆栈，因此RAM也是必不可少的部件


## PIN
1. 用于连接UART串口，从而支持串口输出/输入
2. 用于控制外接LED，进行外部LED的点亮

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