采用静态显示，显示器由9个共阳极数码管组成。方案一：使用液晶屏显示时间。液晶显示屏（LCD）具有轻薄短小、低耗电量、无辐射危险，平面直角显示以及影像稳定不闪烁等优势，可视面积大，

Packet : 电子智能抢答器（单片机）_secret.doc filelist

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