串口通信

这是XMODEM传输协议原代码,测试只能证明错误的存在，而不能表明程序中没有错误。 测试的两个作用是：确定程序中缺陷的存在；有助于判断该程序在实际上是否可用。 软件测试最困难的问题之一是知道何时停止测试(When to stop testing? ) 自己测试自己的程序是不可能的。 当一个软件被测出的缺陷数目增加时，更多的未被发现的缺陷存在的概率也随之增加。 -This XMODEM transfer protocol source code, the test can only be proved wrong there and not show anything wrong procedure. The two test role is : procedures for determining the existence of defects; Contribute to the judge whether the procedure can be used in practice. Software testing the most difficult one of the problems is to know when to stop testing (When to stop testing) testing their own procedures is not possible. When a software detected the increase in the number of defects, more undiscovered flaws in the probability has increased.

串口之间通信的源代码。使用C++开发，对初学者有用。

用c实现的列车运行情况记录程序，包括gps，键盘，lcd，gprs-train condition recorder by c language，to realise gps，key，lcd and gprs

精美记事本,超强功能,定能使你爱不释手!- The fine memorandum, the ultra strong function, decides can cause you to be unable to put down!

am的解调程序，基于matlab的通信系统仿真系列。供刚接触到matlab的朋友使用-am demodulation process, Matlab-based communications system simulation series. For begin to friends using Matlab

关于ＩＳＡＧ网关相关的协议文档，该规范为电信的综合接入网关协议-ISAG gateway on the agreement related documents, the specification for the Telecom Integrated Access Gateway Protocol

(2,1,3)卷积码搭建了简单的系统来进行纠错展示,可以实现从编码,加入错误,译码,输入输出码字对比等基本功能,另外加入了交互模块,用户可以自己设定错误比特的数目和位置,使纠错功能显而易见.-(2,1,3) Convolutional Codes built a simple system for correcting display can be realized from coding, joined errors, decoding, the input and output code contrast basic functions, adding to its interactive modules, Users can set their own errors and the number of bits, so that error-correcting functions obvious.

使用softAP实现多方聊天通讯的例子源码，首先把多部手机连接到一个局域网中，在一个手机上安装服务端，然后服务端会自动显示一个可访问的IP地址并等待客户端连接，在其他手机上安装客户端，输入服务端显示的IP地址点击连接就可以与服务端进行连接，不需要改动源码里面的任何东西，亲测有效。

讲述为什么使用网络模拟器. 如协议验证. 控制试验条件. 花费低，耗时少，协同工作和复杂性好. 以及为什么使用NS.-talk about why the use of the network simulator. If agreement certification. Control test conditions. Low-cost and less time-consuming. teamwork and good complexity. and why the use of NS.

通过添加MapObjects组建,完成图层添加,图层管理,图层操作等一些最基本的功能-MapObjects formed by adding to complete the added layer, layer management, layer operations, such as some of the most fundamental function of