基于单片机的多功能转速表的设计_单片机_毕业设计论文网 关键词：转速表，单片机，驱动器MC14499 [gap=1111]Key words: the rotational speed, the Micro Controller Unit ,a decoder MC14499前言
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The application and principle of the Micro Controller Unit has been an important part of our living and production.
单片机原理及应用的关键技术已经成为我们生活生产中不可缺少的部分。
The micro-controller unit (MCU) is the core of the digital part, which still includes keyboard and sound-light notice circuit.
数字部分以微控制器为核心，还包括键盘和声光提示电路。
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