stm32f4xx_flash

proteus仿真，以LPC2138芯片为核心生成PWM波，控制升压斩波电路（PWM），实现稳定的高电压输出。包含AD转换、串口通信。(proteus simulation. This design use PWM wave generated by LPC2138 to control boost circuit and realized a steady high voltage output. ADC and serial port communication are involved in the design.)

ACR38智能读卡器测试用：芯片IC卡等(ACR38 Smart Card Reader test: IC card, etc.)

好的声文同步程序，值得学习，适合于初学者，给大家共同分享(Good sound text synchronization process, it is worth learning, suitable for beginners, for everyone to share)

抢答器论文及其proteus仿真资料 单片机C51程序(Responder papers and proteus simulation data C51 MCU program)

cc2530zigbee芯片英文资料，数据手册(cc2530zigbee chip information in English, Data Sheet)

学习电子电路，很好的参考资料，可以学到很多东西。(Learning electronic circuits, a very good reference, you can learn a lot.)

at89c52的示例程序，简单的介绍了led的是使用(At89c52 example program, little led is used)

STM32F407信号发生器输入一个正弦波，AD采样，DA输出，系统频率应该是输入的波形的频率的10倍以上保证输出波形的完整性，系统的输出频率可以使用示波器测试出。(Stm32f407 signal generator input a sine wave, AD sampling, Da output and system frequency should is 10 times the frequency of the input waveform to guarantee that the above output waveform of integrity, the output frequency of the system can use oscilloscope to test out. )

说明：  它是关于80C51单片机的原理介绍和使用其开发的过程，有具体的实例。(It was introduced on the 80C51 microcontroller and use the principle of its development process, with specific examples.)

通过WM_DEVICECHANGE来检测u盘的传播者源代码(through WM_DEVICECHANGE to detect u site promoters source code)