This paper introduces the work principle of gas density testing system based on SCM AT89C51, and gives the hardware structure and software flow of testing system.
本文介绍了基于AT 89 C 51单片机气体浓度测试仪的工作原理，给出了测试仪的硬件结构及软件流程。
This paper introduces the work principle and structure of the gasoline density Control system based on SCM AT89C52, and gives the hardware structure and software flow of testing system.
本文介绍了基于AT89C52单片机控制的油气浓度监测系统的组成及工作原理．给出了系统的硬件结构及软件流程。
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