基于AT89C852单片机的8位竞赛抢答器(原理图+代码)

上传者: 39421779 | 上传时间: 2019-12-21 20:50:53 | 文件大小: 93KB | 文件类型: zip
输入为8个按键输入,分别代表8位选手,开始后,数码管显示倒计时,可自行设置时长。当有选手抢答按下按键后,触发外部中断,音频输出,倒计时停止,另外两个数码管显示选手编号

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