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使用同位网格SIMPLE算法计算阶梯流动(Calculation of step flow using SIMPLE algorithm with collocated grids)

说明：  python游戏编程教材 人民邮电出版社第三版(Python game programming textbook, people's Posts and Telecommunications Press, Third Edition.)

用三个按键控制pwm输出 key0控制是选着显示/改变频率或占空比 key1控制增加 key2控制减少 数码管显示频率或占空比 频率单位默认Hz（500-20KHz） 占空比范围（0.1-0.9）(Control PWM output with three keys Key0 controls display/change frequency or duty cycle optionally Key1 controls the increase Key2 controls are reduced Digital tube display frequency or duty ratio Frequency unit default Hz (500-20khz) Duty cycle range (0.1-0.9))

说明：  模糊pid控制，可以用于电机控制系统中，参考改进的pid控制(Fuzzy PID control, can be used in motor control system, reference to the improved PID control)

C#为菜单添加图片功能，工具栏内有几个使用了图片效果的按钮，本实例的图片是随便找的，具体用时候你可以制作一些与窗体想匹配的图片，这样整体窗体效果就更专业了。

大一时做的一个作业，其实很不好玩，又贪吃蛇改编-Freshman to do a job, in fact, very fun, but also adapted Snake

系统可用编辑器1. Overview 2. System Requirements 3. Contents of the Distribution Package 4. List of Available Command Line Flag Options 5. Contents of the Extracted Files 6. Installing the Software in Interactive Mode 7. Installing the Software in Silent Mode 8. Installing the INF Files Prior to OS Installation 8A. Installing the Windows* XP INF Files Prior to OS Installation-system can be an editor. Overview 2. System Requirements 3. Contents of the Distribution Package 4. List of Flag Available Command Line Options 5. Contents of the Extracted Files 6. Installing the Interactive Software in Mode 7. Installing the Software in Silent Mode 8. Installing the INF Files Prior to OS Installation 8A.* Installing the Windows XP Files INF Prior to OS Installation

兼容飞鸽传书vc版本，C#开发的，实现文件传书和即时通讯(Compatible with the vc version of the Flying Pigeon Book, developed by C#, to achieve document circulation and instant messaging)

说明：  LCR测试70 多年来，泰克旗下的吉时利公司一直致力于设计、制造和销售先进的电气测试仪器和系统，以满足电子制造商在高性能生产测试、过程监控、产品研发方面的特殊需求。(LCR meter measureKeithley Products and Application Insights Help Engineers Innovate. For more than 70 years, Keithley, a Tektronix company, has been designing, manufacturing and marketing advanced electrical test instruments and systems for the specialized needs of electronics manufacturers in high performance production testing, process monitoring, product development and research.)