硬件实验大三课程报告

上传者: i_silence | 上传时间: 2021-09-07 09:05:50 | 文件大小: 24.69MB | 文件类型: RAR
设计任务与要求 (1) 根据实验室提供的设备,完成基本的设计; (2) 利用8255控制4*4键盘,使用键盘的前三行,0到9用于输入频率值,A 用 于提交,B用于清屏重新输入; (3) 为8253提供产生频率的计数初值; (4) 8253产生输出频率并在LED灯上输出实际频率值; (5) 利用 LCD屏显示频率数值。

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