说明：  PS/2接口协议详解，其中对PS2键盘核鼠标的命令作了详细介绍，可以供广大想作单片机键盘鼠标接口的同志学习
(PS/2 interface protocol Hi, PS2 keyboard to the mouse nuclear order, was introduced in detail. to be available to all for a keyboard and mouse interface MCU comrades learning. .)