文件名称:VHDL_keyboard-scan
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实验内容：设计一个BCD码到LED的七段译码器 DICEDIS，非BCD值时仅G段亮（输出为一。然后下载验证键盘显示实验。接着改写程序，将1-6的数据固定地显示在1-6位数码管上。进而将F键功能改为换向键，即可以控制数字滚动显示的方向。
-Experiment: Design a BCD code to the LED seven segment decoder DICEDIS, non-BCD value G segment only bright (output is a. Then download keyboard display validation experiments. Then rewrite the program, the data will be permanently displayed 1-6 In the 1-6 digital tube. then changed the F key functions commutation button, you can control the digital scroll direction.
-Experiment: Design a BCD code to the LED seven segment decoder DICEDIS, non-BCD value G segment only bright (output is a. Then download keyboard display validation experiments. Then rewrite the program, the data will be permanently displayed 1-6 In the 1-6 digital tube. then changed the F key functions commutation button, you can control the digital scroll direction.
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VHDL_keyboard scan.doc