用C语言实现的学生信息管理系统

含浮动工具栏、左右侧可隐藏面板等源码，可以直接使用，效果超好。和VS2005的界面相似。(With a floating toolbar, left and right side panels, etc. to hide source code, you can be used directly, the effect super-good. And an interface similar to VS2005.)

测量单片机频率，可以测量周期波的频率，最大可以测到60khz(Measuring Frequency of Single Chip Microcomputer)

QT串口助手 458通信 232通信QT串口助手 458通信 232通信QT串口助手 458通信 232通信QT串口助手 458通信 232通信QT串口助手 458通信 232通信QT串口助手 458通信 232通信

说明：   思想：控制端向服务器端发送一段控制代码，6位的控制代码，服务器根据控制码的要求，完成指定操作。完成操作后，服务器发送反馈控制码，为3位。 服务器端程序后台运行(Thought: Control client to the server-side send a control code, control code 6, the server control code in accordance with the requirements of the completion of the specified operation. After the completion of the operation, the server code to send feedback control for three. Server-side program running in the background)

tf–idf, short for term frequency–inverse document frequency, is a numerical statistic that is intended to reflect how important a word is to a document in a collection or corpus.[1]:8 It is often used as a weighting factor in information retrieval and text mining. The tf-idf value increases proportionally to the number of times a word appears in the document, but is offset by the frequency of the word in the corpus, which helps to control for the fact that some words are generally more common than others. Variations of the tf–idf weighting scheme are often used by search engines as a central tool in scoring and ranking a document s relevance given a user query. tf–idf can be successfully used for stop-words filtering in various subject fields including text summarization and classification. One of the simplest ranking functions is computed by summing the tf–idf for each query term many more sophisticated ranking functions are variants of this simple model.

LOD地形的一个例子·近远摄像机观察三角面得不同个数(hellow)

This source code is used to controll the PC parllel port.

嗨计算器项目 visualstudio 2013 标准计算器 os 7Mostafa

基于12C5A60S2可移植性应用[红外遥控的数字时钟](Based on the application of infrared remote digital clock in the 12C5A60S2 portability])

说明：  OpenCV 3计算机视觉 Python语言实现(第二版)(OpenCV 3 Computer Vision Python Language Implementation (Second Edition))