从硬件上阐述了紧耦合策略，以及网络接口电路通过配置协处理器和较大容量存储器的策略。
In the hardware, tight coupling tactics and methods of deploying assist processor and big capacity memory in the network interface board are provided.
分析了网络协议测试仪的串行通信接口功能，设计了一种可编程多协议串行接口电路。
The function of serial communication port in protocol tester was analyzed and a programmable multi-protocol serial communication interface circuit was designed.
通过适当地修改接口电路和增删软件模块，可以很方便地把所提出的系统方案移植到其它类似的应用领域中，如传真加密、IP电话加密、专用网络的数据加密等。
We can easily transplant the system into other domains such as faxes encrypting, IP Phone and private data network by changing the interfacing circuit and adding or deleting software modules.
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