设计一个洗衣机控制器，要求洗衣机有正转、反转、暂停三种状态。设定洗衣机的工作时间，要洗衣机在工作时间内完成：定时启动正转20秒暂停10秒反转20秒暂停10秒定时未到回到“正转20秒暂停10秒……”，定时到则停止，同时发出提示音。-Design a washing machine controller, requirements for washing machines have forward, reverse, pause, three states. Set the washing machine working hours, washing machine during working hours to complete: time to start forward pause 10 seconds 20 seconds 20 seconds pause 10 seconds reversing timed yet to come back to the " Forward 20 seconds pause 10 seconds ......" , timed to stop, while beep.