In this paper, first, Outline of NETBIOS including network control block, command and call was introduced. then, The design idea of dual-computer system based on NETBIOS communication was discussed.

• 本文首先简要介绍了NETBIOS的概貌、网络控制块、命令和调用，接着论述了基于NETBIOS通信的双机系统的设计思想。