一个可以看现在计算机上有那些端口已经被打开的程序。利用了Windows提供的IPHelpApi.DLL提供的输出函数来实现端口监视功能。-a computer now can be seen on those ports have been opened up procedures. Use of the Windows IPHelpApi.DLL function for the output port to achieve monitoring capabilities.

matpower环境下进行潮流计算，将潮流计算的导纳矩阵析出，然后编程实现雅克比矩阵的计算。- Under matpower environment flow calculation, the admittance matrix flow calculation of precipitation, then programming Jacobi

系统由单片机、显示器等部分组成，利用显示器来显示密码锁输入的相关信息，密码输入正确则打开密码锁通过PM函数产生而为PM随机海面，产生模拟海面，进而进行计算模拟(The system is made up of single-chip microcomputer, display and other parts. It displays relevant information of the password lock using the display. If the password is e