linux下的按键驱动，可用于嵌入式开发之中；具有四个按键的驱动程序源代码。-linux pressed key actuation, may use in to insert during the type development; Has four pressed keys the driver source codes.

关于led流水灯与按键结合的程序，四个按键控制led流水灯-Led lights and buttons on the water of the combination of the program, four key water control led lights