按键控制与LED灯联合起来设计程序 第一按键正转同时八盏流水灯从左往右循环流水 第二按键反转同时八盏流水灯从右往左循环流水 第三按键停转同时八盏流水灯全灭 按键之间可任意切换状态-Button control and LED lights together the first key of the design process forward eight water lights from left to right recirculating button reverse at