基于44B0 arm7的USB HOST驱动程序源代码，采用的是SL811 USB芯片。-44B0 ARM7 based on the USB HOST driver source code, using the SL811 USB chip.

SL811做的USB-HOST的鼠标键盘驱动代码，是原厂自带的程序，。(SL811 do USB-HOST mouse, keyboard driver code, is the original factory comes with procedures,.)