Hardware is designed based on portable industrial PC, data communication card and data acquisition card. Software is developed with virtual instrument development platform.

硬件采用便携式工控机、通信接口卡和数据采集接口卡，软件基于虚拟仪器开发平台开发。

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The advantages of PC instruments depend to a large extent on development of the system software.

PC仪器的优点在很大程度上取决于其系统软件的开发。

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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。

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After the launch of the IBM PC in 1981, UNESCO became a pioneer for supporting the development of advanced well documented software working in different languages and distributed free-of-charge (freeware) to its Member States.

UNESCO: Communication and Information