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这是一个AVR开发板的所有必需的源码，包括原理图，PCb图以及调试用的C例程-This is an AVR development board of all the necessary source code, including schematics, PCb map and debug using the C routines

STM32F103VBT6 实现 USART PRINTF -STM32F103VBT6 achieve USART PRINTF

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介绍240X64分辨率的液晶显示模块，该模块使用简单方便，编程容易，-240X64 introduced resolution liquid crystal display module, the module is simple and convenient to use, programming easy,

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