三层结构实体类

Symotion是一种用于运动控制的实时工业总线，基于10/100M以太网物理层，应用层使用canopen及精简协议。可应用于运动控制器，电机驱动器，PLC，编码器光栅尺与其它工业现场执行器互连。symotion总线提供安全、开放、低成本及高性能应用。(Symotion is a synchronous real-time FieldBus for Motion control . Build on a 10/100M Ethernet physical layer , and Canopen or reduced protocol Layer. interconnect between motion controllers, Motor drives, I/O modules, encoder devices and other actuators. Symotion provides Safety , Open , low cost and high performance in all applications.)

基于STM32 F1编写的MPU6500+dmp的驱动代码，包括I2C.c。(Based on STM32 F1 written MPU6500+dmp driver code, including I2C.c.)

linux elf的加壳工具，需要的可以参考参考(linux elf packers tools need to refer to the reference)

表单自动填写，使用MSHTML，有效自动填写(Automatically fill in the form, the use of MSHTML, effective automatically fill in)

用c++求折线的长度，程序可以改变输入点的个数,包含所有的代码.(C++ line with the length requirements, the program can change the number of input points, including all of the code.)

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.

AVR frequency meter with Proteus model

FX2.H和FX2REGS.H，cy7c68013芯片的固件程序需要include这两个头文件，应该对usb开发的有些用(FX2.H and FX2REGS.H, cy7c68013 chip firmware files need to include these two heads, there should be some development with usb)

XP形式的窗体,分模式与非模式两种,附加文件功能非常强大,只要添加一条语句就可以实现,非常值得学习,很经典,()

CH376DS1说明文档、USB开发、枚举等(CH376DS1 documentation, USB development, enumerations, etc.)