题目详情

以下哪种措施无助于降低嵌入式系统的功耗设计()。

  • A.设计外部中断唤醒电路
  • B.使用UPS稳压电源
  • C.采用DVS技术
  • D.动态调整微处理器的时钟频率和电压

正确答案及解析

正确答案
B
解析

降低嵌入式系统功耗设计的措施有:①采用低功耗器件;②采用高集成度专用器件;③动态调整微处理器的时钟频率和电压,例如采用动态电压调整技术(DVS技术);④利用“节电”工作方式;⑤实行电源管理;⑥设计外部中断唤醒电路等。

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