一个使用ActiveX实现的串口通讯测试程序，有一定的实用性。-use ActiveX to achieve a serial communications test procedure, a certain degree of practicality.

这本来就是个非常简单的网路程序，只是演示如何进行UDP的内网穿透而已。本人所作的修改 主要是在测试UDP穿透不同的NAT时为了方便使用而已。因此改动也不大，加了一个函数和几参数， 多打印了原来没有的一些信息，如此而已。看源码吧-It' s actually a very simple network program, but demonstrates how the internal network through UDP only. I made changes primaril

此程式为DOS下的串口的通信测试程式，通过中断方式来接收数据并打印出来。可带数在DOS下测试，附源程序和测试程式。-Under this program for the DOS serial communications test program, through an interrupt to receive data and print them out. Can be tested with a number of the DOS, with a source and test progr

Java编写的读取二维码的软件，在文件夹中已经附上一个测试二维码了，打印出来即可-Software to read the two-dimensional code, written in Java in the folder have enclosed a test of the two-dimensional code, print it out to