Liquid crystal display and RTC have more application in the design and using of the system, so a detailed introduction about them is given in the text.
液晶显示器和日历时钟在系统的设计和使用中有较多的应用，所以在本文中也有关于它们的详细介绍。
Liquid crystal display and RTC have more application in the design and using of the system, so a detailed introduction about them is given in the text.
液晶显示器和日历时钟在系统的设计和使用中有较多的应用，所以在本文中也有关于它们的详细介绍。
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