在 Ångström 第一次引导时，它会检查系统上的总线，初始化键盘、显示器、鼠标、以太网适配器和所有其他外设，然后寻找要使用的驱动程序。
The first time Ångström boots, it inspects the buses on the system and initializes the keyboard, display, mouse, Ethernet adapter, and any other peripherals, then finds the correct drivers to use.
本文采用USB总线取代传统的接口总线，通过对usb协议和设备构架的理解，实现了对鼠标系统进行了硬件和软件设计。
In this article, Universal Serial Bus replaces traditional ones, and through the understanding for USB agreement and equipment frame to realize the hardware and software design for mouse.
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