各种各样的矩阵键盘扫描程序集 矩阵键盘的扫描对初学者来说是不可避免的,然而也相对来说有点难度. 鉴于此,我整理了一下,我所遇到的矩阵键盘扫描程序集-Variety of matrix keyboard scanning matrix keyboard scanning assembly is inevitable for beginners, but also relatively little difficulty. In view of this, I organize a l