得到计算机网卡信息的小程序有利于初学者的网络编程学习-computer card information to be small procedures are conducive to beginners learning network programming

取得计算机网卡物理地址的步骤：1）列举所有的网卡2）分别重置每块卡以取得它的正确信息3）查询网卡，取得MAC地址-made computer card physical address steps : 1) lists all the card 2), respectively replacement every piece of card to obtain the correct information 3) card inquiries made MAC address