HelloWorld

帮助解决数学问题，同时内部包含诸多神经网络训练文件帮助参考(Test the simple function of the Mathmethetic.)

说明：  使用altium designer软件，绘制的STM32F103RCT6的最小系统板 有flash 有稳压模块(Using Altium designer software, the minimum system board of stm32f103rct6 drawn has flash and voltage stabilizing module)

电器控制系统与电机是制冷设备中最容易出现问题的部分。本书从最基础的电路知识入手，介绍电冰箱，冷藏柜，窗式空调，汽车制冷，小型冷库等制冷系统的电路原理。-Electric motor control system and refrigeration equipment are the most vulnerable part of the problem. This book from the most basic knowledge of the circuit to start, introduction of refrigerators, freezers, window air-conditioning, auto refrigeration, cold storage, such as small-scale refrigeration system circuit.

说明：  使用PI在matlab搭建的永磁同步电机模型，能够使转速稳定。（现代永磁同步电机控制原理及MATLAB仿真__袁雷编著）(The permanent magnet synchronous motor model built by PI in Matlab can make the speed stable.)

STM8L15系列的I2C通信实例程序,有三种模式的范例,分别是master,slaver ,poll(STM8L15 series I2C communication procedures example, there are three modes of examples, namely master, slaver, poll)

在nuc505内部codec直入直出的官方demo修改，简单的对声音进行延时(In the nuc505, codec directly into the direct demo official revision, a simple delay for the voice.)

说明：  js贪吃蛇小游戏，代码简单可自行修改，主要部分都有注释(JS snake game, simple code can be modified by itself, the main part has comments)

说明：  击图片旋转效果，图片叠加轮播效果，图片叠加轮播旋转切换代码。(Click on the image rotation effect, the image superimposed rotation effect, the image superimposed rotation switching code.)

Ericsson 3G Trial Network Optimization

说明：  网页地图的放大、缩小、移动、定位，中心点已经设置好，定位点也一样，可以复位(Map zooming, zooming, moving and positioning)