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1·The scheme of circuit switching of two control machines in real-time control system that adopted dual machine thermal back-up and give priority to data choice chip are introduced simply.

文章简要介绍了在采用双机热备份实时控制系统中，以数据选择芯片为主，为系统热备份的两套控制机器进行切换选择的切换电路设计方案。

2·The article has corrected the mistakes in an example and provided a correct method on how to produce the priority encoder of circuit 32-5 by T4148.

更正了教材中一道例题的错误，给出了用T4148实现32线—5线优先编码器的正确方法。

3·Put priority on introducing integrated circuit industry and the relevant supporting industries and the research and development projects.

重点引进集成电路产业及相关配套产业、研发项目。