Keil + proteus
2016-08-22
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Parallel Port numeric keypad test requirements: master the dynamic display, dynamic scan the keyboard works and the hardware and software design, debugging the means to acquire 80C51 interface hardware circuit design methods and software programming approach to understanding the 80C51 external interrupts use and programming methods Experimental subjects: parallel port for digital 0 ~ 9, A ~ F, L, U, P, n total of 20 keyboard, the result will be keys to use 7-segment digital tube display.
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单片机
软件
调试
工作
原理
键盘
方法
设计
数字
显示
扫描
实验
动态
掌握
要求
并行口
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