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Description: 8255扫描键盘、显示程序
利用8255可编程并行口做一个扫描键盘实验，
把按键输入的键码，显示在由8279控制的七段数码管上。
8255PA口做键盘输入线，PB口作扫描线。-8255 scanning keyboard, display program using 8255 as a parallel port programmable keyboard scan experiment, the button input keys code, displayed in the control of the team respectively by 8279 digital tube. 8255PA I do keyboard input line, PB mouth for scan line.
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Size: 1024 |
Author: zhuzhijing |
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