有關鍵盤，接上ps/2鍵盤，按鍵後，會將scancode和breadcode顯示在led燈-On the keyboard, connected to ps/2 keyboard, keys, the scancode and breadcode will appear in the led lights

键盘控制器VHDL代码 该控制器实时扫描矩阵键盘的行列，当用户有按键按下时，可以定位到对应的按键并产生一个中断信号-Keyboard controller entity -- -- The controller scans the columns, cols, by making a different column logic-0 -- therefor the inputs have to be pull-up high. It processes the input,

C51 keyboard scancode