用于无线收发模块nRF24l01模块的C语言源代码，很实用，是初学者参考的绝佳自=资料。-NRF24l01 module for wireless transceiver module C-language source code, very practical, is an excellent reference for beginners since the = data.

STM32单片机驱动RFID 读卡器的源代码 ，有原理图，有代码说明文件(STM32 MCU driver RFID reader source code, there is a schematic diagram, there is a code descr iption file)

windows系统，c++语言的 通过RS232 （串口）操作RFID读写卡器的源代码(The windows system, the c++ language uses the RS232 (serial port) to operate the source code for the RFID read and write card)