问题的提出：编写一个长途电话计费程序，计费规则是每6秒钟0.06元，要求能输入发话地、收话地，输出话费。...

学习的时候自己创建的Rational小类,供学习参考.

一个朋友给的最新的uc/os-ii源代码(A friend to the latest uc/os-ii source code)

ht1261 STM32 驱动，亲测可用(ht1621 driver for STM32.tested.)

制作了一个可以通过对话框输入地址的浏览器，如同IE一样，点击浏览按钮就可以浏览网页(produced a dialog can be imported through the browser address, as Internet Explorer, click on the Browse button can visit the website)

read protel SDF file to perform offline analyse

提取并保存应用程序图标。本代码实现了从其他应用程序中提取其应用程序图标的功能！(Extract and save the application icon. The code from other applications to extract the application icon of its features!)

基于DSP的单相光伏并网逆变器全部源代码，包括锁相环PLL,mppt,pid控制程序,希望对大家有帮助!(DSP single-phase photovoltaic grid-connected inverter with full source code, including the phase-locked loop PLL, mppt, pid control procedures, we hope to help!)

C++运行环境vcredist_x64，运行时(C++ running environment)

用C语言编写的ElGama 算法，可以运行(ElGama algorithm)

说明：  视觉算法原理：背景提取 　　1. 打开视频(文件或摄像头) 　　2. 从视频中提取当前帧 　　3. 计算背景：以前多帧求取平均 　　4. 根据背景得到运动目标(当前帧 - 背景) 　　5. 返回2，程序不断循环(Principle of visual algorithm: background extraction 1. Open video (file or camera) 2. Extract the current frame from the video 3. Calculation background: before, the average of multiple frames was calculated 4. Get the moving target according to the background (current frame - background) 5. Return 2, the program loop)