用开关做中断源输入部分，发光二极管显示输出结果，当分别拨动开关KK1、KK2、KK3、KK4时发光二极管相应作左、右、由中间向两边和反显流水灯显示-With the switch as interrupt source input section, light-emitting diode display output, respectively, when the toggle switch KK1, KK2, KK3, KK4 when the corresponding light-emitting diodes for left, right, from the middle to both sides and anti-water light show display