On power up, the firmware starts executing code at address 0h. After some housekeeping tasks it will determine whether it is attached to a USB or a PS2 interface. From that, it will branch either to USB_Main or PS2_Main. -On power up, the

PS2键盘控制c源码，经调试，非常可靠稳定,可直接使用-PS2 keyboard control c source code, after debugging, very reliable, stable and can be used directly

ps2键盘在c51中的程序源码， ps2键盘在c51中的程序源码-Ps2 keyboard in the c51 program source code, ps2 keyboard in the c51 program source code