功能:windows下直接检测键盘的扫描码， 语言：asm 特色：它是对bios低层的中断调用的很好应用实例，对ps/2键盘的处理很有参考价值-functions : windows under the direct detection of the keyboard scan code, language : asm2 characteristics : It is the low-level disruption bi

键盘状态扫描函数 /* 键盘扫描函数 读取当前键盘的状态 有按键按下返回相应按键值 无按键按下返回"0x00" */ -Keyboard status scan function/* keyboard scan function to read the current state of the keyboard keys have a corresponding button press to ret