DSP中，发光二极 管轮流点亮，从下至上(或从右至左)分别点亮,当按键按下时流水灯立即改变方向闪烁，再按 下按键后流水灯又立即改变方向闪烁。-DSP, the light emitting diode ROTATE, bottom to top (or right to left) are lit, when the button is pressed to change the direction of the water lights flashing immediately, then