stm32f1xx_hal.h,这是stm32的HAL库，请需要的人下载

这是fft和fht的示例程序，经测试，可以使用，欢迎下载(Hi, this is an example for fft and fht. It works perfectly just like the result in matlab.)

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利用串口或者蓝牙的通信方式将采集到的心电数据绘制成波形，并与matlab混合编程实现小波分析(Using serial or Bluetooth communication will be collected ECG data plotted waveform, and Hybrid Programming with matlab wavelet analysis)

主要用遗传算法求解微分方程组，编程实现用c语言，matlab环境下，决策变量为连续性的，范围在0-1之间变化，使用交叉变异操作进化种群

脉冲宽度调制是一种模拟控制方式，根据相应载荷的变化来调制晶体管基极或MOS管栅极的偏置，来实现晶体管或MOS管导通时间的改变，从而实现开关稳压电源输出的改变。这种方式能使电源的输出电压在工作条件变化时保持恒定，是利用微处理器的数字信号对模拟电路进行控制的一种非常有效的技术。脉冲宽度调制是利用微处理器的数字输出来对模拟电路进行控制的一种非常有效的技术，广泛应用在从测量、通信到功率控制与变换的许多领域中。(Pulse width modulation (PWM) is an analog control method, which modulates the bias of transistor base or MOS gate according to the change of load, so as to change the turn-on time of transistor or MOS and realize the change of output of switching regulated power supply. This method can keep the output voltage of the power supply constant when the working conditions change. It is a very effective technology to control the analog circuit by using the digital signal of the microprocessor. Pulse width modulation (PWM) is a very effective technology to control analog circuits by using the digital output of microprocessors. It is widely used in many fields, from measurement, communication to power control and conversion.)

this program change title of menu of windows

《ARM嵌入式Linux系统开发技术详解》完整版本，该书由浅入深、通俗易懂地讲解了嵌入式Linux的系统设计与开发。全书共25章，从嵌入式处理器ARM开始，讲解了ARM处理器的资源、ARM的指令集、ADS开发工具、嵌入式系统硬件环境的构建、Boot Loader、Linux内核移植、嵌入式文件系统、嵌入式Linux多任务程序开发、嵌入式Linux设备驱动开发、嵌入式Linux网络程序开发、MiniGUI图形界面开发、设备驱动开发案例、综合案例等内容。书中通过大量的例程来讲解知识要点，并提供了大量极有参考价值的开发案例，读者可以通过这些例程和开发案例对嵌入式Linux开发有一个系统的学习和提高。(" ARM embedded Linux system development techniques explain the full version of the book easy-to-digest, simple to explain the embedded Linux system design and development. The book is 25 chapters to explain the ARM processor resources, starting from the embedded processor ARM, the ARM instruction set, ADS development tools, embedded system hardware environment, Boot Loader, Linux kernel porting embedded file system, multitasking embedded Linux application development, embedded Linux device driver development, embedded Linux network program development, the MiniGUI graphical interface development, device driver development stories, comprehensive case. Book by the large number of routines to explain the knowledge points, and provides a large number of very valuable possibilities for development through these routines and development case, the reader can learn and improve a system for embedded Linux development.)

基于Arduino的蓝牙控制小车，利用手机蓝牙，控制电机的正反转等功能。(Based on the Arduino bluetooth control the car, mobile phone bluetooth, control motor and reversing, and other functions.)

说明：  这个解决方案包含了一些简单的布局方法，供有需要的。朋友学习。(This solution includes some simple layout methods for needy friends to learn.)

When faced with the task of solving a partial differential equation computationally, one quickly realizes that there is quite a number of different methods for doing so. Among these are the widely used finite difference, finite element, and finite volume methods, which are all techniques use