y4.c Jacobi方法

说明：  班级作业成绩管理系统，可以管理班级内同学的成绩信息，并筛选出不及格的同学。(Class operating performance management system, students can manage class performance within the information and filter out failing students.)

基于单片机的定时器开关，mcu+LCD1602+继电器+按键，有源码，原理图，PCB设计文件，毕业论文，仿真文件(Based on single-chip timer switch, mcu+ LCD1602+ relay+ button, there is source code, schematics, PCB design documents)

autocad插件，批量注记多边形边长，一键调整字体高度(Autocad plug-in, batch note polygon edge length, one key to adjust font height)

循环冗余校验16位的，c语言编程环境，能够正常运行，程序详细注释(16 bit cyclic redundancy check, C language programming environment, normal operation, procedures detailed notes)

本音乐播放器实现了音乐播放器的基本功能，而且具有网络功能，当好友上线时就会知道好友在听什么歌曲。网络功能采用UDP协议。

说明：  量化投资模型,期货品种量化策略源码.1.海龟图,2.机器学习(股票) 量化策略源码.3.做市商交易(期货) 量化策略源码.4.跨期套利(期货) 量化策略源码.5.跨品种套利(期货)量化策略源码.6.网格交易(期货) 量化策略源码. 7.alpha对冲(股票+期货) 量化策略源码(Quantitative investment model)

说明：  c# winform开源自定义控件，支持直接拖拉精美控件(C # WinForm from the definition of controls, support direct drag and drop beautiful controls)

包含C语言指针数组等关键知识，供初学者学习C语言基础知识。(For beginners to learn the basic knowledge of C language)

IEC 60870-5-103 英文版通信规范(IEC 60870-5-103 Telecontrol equipment and systems Part 5-103 Transmission protocols)

说明：  图形化界面，简易航线查询系统，数据源为压缩包内的.csv文件 求任意两个机场之间的最短飞行时间。 仅限直飞或 1 次中转，求任意两个机场的航线（航班 ID 顺序表）。 给定起飞时段或者降落时段或者机型要求，求任意两个机场的多个备选航线（航班 ID 顺序表）。 给定起飞时段或者降落时段或者机型要求，求任意两个机场之间的航费（机票价格）最低的路径。(Find the shortest flight time between any two airports. Only direct flights or one transit are allowed, and the routes of any two airports (flight ID sequence table) are obtained. Given the take-off time or landing time or aircraft type requirements, find multiple alternative routes (flight ID sequence table) for any two airports. Given the take-off time or landing time or aircraft type requirements, find the lowest route between any two airports (ticket price).)