The layering thought of development of data acquisition unit is adopted. The protocol on application level and the PC software are designed.
数据采集器采用了分层开发的思想，设计了完善的应用层协议，同时设计了简明易用的PC机软件。
Secondly, it keeps the low coupling and high cohesion virtue of layers in protocol stack after adding cross-layer design, so as to keep the OSI layering architecture.
其次，它使加入跨层设计后的网络协议栈每个层仍具有高内聚、低耦合的特征，从而保持了网络协议栈良好的软件架构。
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