modbus

BK9520是用于无线麦克风的芯片组，包括V段发射芯片BK9521、V段接收芯片BK9522、U段发射芯片BK9523和U段接收芯片BK9524。V段频率覆盖160~270MHz，U段频率覆盖500~980MHz。 BK9520采用数字调制和高性能音频ADC和DAC，配合极低延迟的音频编码器，实现了高保真的数字音频传输，可以应用于视唱、舞台演出以及教学系统。由于BK9520在单芯片上实现了从射频到基带的完全集成，同时省却了压扩器，这样可以显著减小系统的PCB尺寸，极大的提高生产可靠性。(BK9520 is a chip set used for wireless microphone, including V segment transmitter BK9521, V segment receiver chip BK9522, U segment transmitter chip BK9523 and U segment receiver chip BK9524. The frequency of the V segment covers 160~270MHz, and the frequency of the U segment covers 500~980MHz. BK9520 uses digital modulation, high-performance audio ADC and DAC, and very low latency audio encoder to achieve high fidelity digital audio transmission. It can be applied to solfeggio, stage performance and teaching system. Because BK9520 realizes the integration from radio frequency to baseband on single chip, and saves the companding device, so that the PCB size of the system can be significantly reduced, and the production reliability can be greatly improved.)

stm32 实用。CAN是控制器局域网络(Controller Area Network, CAN)的简称，是由以研发和生产汽车电子产品著称的德国BOSCH公司开发的，并最终成为国际标准（ISO 11898），是国际上应用最广泛的现场总线之一。 在北美和西欧，CAN总线协议已经成为汽车计算机控制系统和嵌入式工业控制局域网的标准总线，并且拥有以CAN为底

A simple implementation in C language of the Minimax algorithm. /! Code is commented in french.

qml实现绘图功能，qml嵌入qwidget中实现在widget中调用qml进行绘图,,,,绘图颜色可选

这本书延伸科学畅销书“全球定位系统 - 理论与实践”，以涵盖全球导航卫星系统（GNSS），包括俄罗斯GLONASS，欧洲伽利略系统，以及其他系统。书是指在一般意义到GNSS来描述各种现有参考系统的坐标和时间，卫星轨道，卫星信号，可观察，数学模型的定位，数据处理，和数据转换。本书是一本大学级入门教材，目的是作为学生的参考以及为专业人士和科学家在大地测量领域，测量工程，导航和相关学科。(This book extends the scientific bestseller GPS- Theory and Practice to cover Global Navigation Satellite Systems (GNSS) and includes the Russian GLONASS, the European system Galileo, and additional systems. The book refers to GNSS in the generic sense to describe the various existing reference systems for coordinates and time, the satellite orbits, the satellite signals, observables, mathematical models for positioning, data processing, and data transformation. This book is a university-level introductory textbook and is intended to serve as a reference for students as well as for professionals and scientists in the fields of geodesy, surveying engineering, navigation, and related disciplines.)

c语言开发的简单粒子系统，粒子系统模拟室内下雨特效，(Particle system simulation rain special effects )

说明：  这个解决方案包含了一些简单的布局方法，供有需要的。朋友学习。(This solution includes some simple layout methods for needy friends to learn.)

Stuts 2.3 api,非常适合程序员参考使用。(Stuts 2.3 api)

学生成绩管理系统，包括人名分类，成绩录入，成绩分析等内容。(Student achievement management system, including the names of persons classification, performance recording, performance analysis, etc..)

fbx 模型加载 opengl 动画渲染(fbx module opengl animation render)