OPAMP-classical-information

我们常常会在各类的技术文章中见到诸如135、137、139、443之类的“端口”，可是这些端口究竟有什么用呢？它会不会给我们的计算机带来潜在的威胁呢？究竟有多少端口是有用的？想要了解的话，就跟我来吧-We often in various technical articles seen as 135,137,139. 443 like the "port" However, these ports whether what is the use? It will give us the potential of computer threat? How many ports are useful? Want to find out more, come with me

MS12864J的C51显示程序，这两个程序我改了好久，可是总显示不了，那位高手帮帮忙吧，谢谢，谢谢。-Two C programs of MS12864J,not compiled.Anyone help me?

印刷电路板式换热器 直通道有限元分析 印刷电路板式换热器(Finite element analysis of straight channel of printed circuit board heat exchanger)

VC++ 窗口透明的实现还有放大镜功能,简单研究CDC,实现透明窗口或放大镜窗口效果,适用于新手上路.

图形化计算器 可实现加减乘除功能 可实现小数功能-graphic calculator can achieve the arithmetic function can be realized decimal function

一个求解车辆路径问题的粒子群算法的源码，用C++编写。(Solving a vehicle routing problem with the particle swarm algorithm source code, using C++ Prepared.)

I have uploaded 5 source code

说明：  因子分析:包括案例和对应的R语言代码，代码中地址需要自行修改后使用(Factor analysis: including a case and corresponding R language code, the address in the code needs to be modified by itself)

货物订单管理系统-goods orders Management System

Oreilly.Learning.XML.2nd.Edition.eBook-LiB.chm XML 的帮助文档-Oreilly.Learning.XML.2nd.Edition.eBook-LiB.chm XML help files