密码锁，这是一个六位的密码锁，双性密码锁，当你按下“change”是可以方便修改密码……
code lock,it is a 6 numbers code lock. it is can double the males and when you change the code then enter "change" (2010-03-26, Visual C++, 2KB, 下载2次)
本程序可实现双机通信，通信可信度号，效率高。
This procedure can achieve the two-plane communication, communication No. credibility, high efficiency. (2008-12-22, Visual C++, 25KB, 下载25次)