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jianpan
- 键盘的驱动。3X3的键盘。调试成功。 at89s51 .
led_51
- 本程序是4位七段显示、3x3键扫实验，正确无误。-4 This procedure is the seventh show, 3x3 keys sweep experiments are correct.
3X3
- ８０５１内核单片机外界３Ｘ３矩阵键盘的驱动程序，并且可实现每个按键的及时扫描-8051 microcontroller core outside the 3X3 matrix keyboard driver, and can achieve the timely scanning each key