这个源码是帮助你连接数据库和管理网格和网络的

矢量量化程序，采用C语言实现，希望对这方面学习的同学有所帮助(vectors quantification，a very good program)

新编MCS-51单片机应用 完本。 希望对大家有用(New MCS-51 microcontroller applications complete this. I hope useful)

利用ffmpeg制作一个简单的播放器；one step by step(how to make a simple player using ffmpeg; here are one simple example;)

基于数字地球的车载卫星导航定位的设计与实现(Digital Earth s satellite navigation and positioning the vehicle design and implementation)

花了大量时间找到的ICP算法领域中外论文集，里面包括最经典的那些ICP算法，以及其他一些改进的ICP算法。这些资料对于研究这个领域的人员应该会有很大的帮助。(Spent a lot of time to find the areas of foreign proceedings ICP algorithm, which includes the most classic ones ICP algorithm, as well as other improvements ICP algorithm. These data for the study of the field staff should be of great help.)

基于SDL2的C语言下的开心消消乐游戏。(Based on SDL2 xiaoxiaole)

说明：  聊天工具,可以实现悄悄话功能,此是改动网上的小程序(Chat tools, whispering function can be achieved, this is a small program changes online)

1.整个装置的输入电源为直流24V，并通过7812和7805输出12V逆变控制电压和5V STM32电源。 2.逆变由STM32的TIM2和TIM3的PWM功能，通过查表法输出SPWM脉冲信号到IR2104控制MOS管输出功率脉冲，经过滤波后成为三相正弦波输出。输出电压高低由电压、电流电位器来调节。电位器输出电压通过AD转换后控制SPWM脉宽，实际输出范围为0-10V三相交流电压。 3.最终输出是电压源输出还是电流源输出由隔离变压器来控制，最终输出电压源0-160V和电流源0-6A。电流源0-6A是模拟电流互感器的输出，实际输出电压是0-1V，短路输出后电流是0-6A. 4. 电流和电压由于有时候会同时接入测量装置回路中，因此必须使用隔离变压器。 5. 电流和电压的相位由相位电位器来控制，来调节输出的功率因素。 6. 由于没有使用电路内部的测量回路，实际输出值需要外部测量，因此也没有做显示功能，因此没有做按键直接数控，用电位器来做调节，简化控制。

poj 3941 Hideyuki is allowed by his father Ujisato some 1000 yen bills every month for his pocket money. In the first day of every month, the number of bills is decided as follows. Ujisato prepares n pieces of m-sided dice and declares the cutback k. Hideyuki rolls these dice. The number of bills given is the sum of the spots of the rolled dice decreased by the cutback. Fortunately to Hideyuki, Ujisato promises him to give at least one bill, even if the sum of the spots does not exceed the cutback. Each of the dice has spots of 1 through m inclusive on each side, and the probability of each side is the same. In this problem, you are asked to write a program that finds the expected value of the number of given bills. (poj 3941 Hideyuki is allowed by his father Ujisato some 1000 yen bills every month for his pocket money. In the first day of every month, the number of bills is decided as follows. Ujisato prepares n pieces of m-sided dice and declares the cutback k. Hideyuki rolls these dice. The number of bills given is the sum of the spots of the rolled dice decreased by the cutback. Fortunately to Hideyuki, Ujisato promises him to give at least one bill, even if the sum of the spots does not exceed the cutback. Each of the dice has spots of 1 through m inclusive on each side, and the probability of each side is the same. In this problem, you are asked to write a program that finds the expected value of the number of given bills.)

这是 关于STM32单片机 PWM电机调速的 例程文件(this is about stm32 pwm )