Merge pull request '调整章节,补充内容.' (#3) from dev into master

Reviewed-on: #3
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lion187 2020-11-26 10:29:09 +08:00
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# 6.2 MCU
MCU 是指微控制器单元Microcontroller UnitMCU

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# 7.1 MCU 与 RTOS
在第 6 章中提到 MCU 是 Microcontroller Unit 的缩写,即微控制器单。没有接触过 MCU 的人可能很难理解微控制器这个概念,它与 CPU 又有什么差别呢?