数字摇奖器 按“开始”数字开始滚动，然后按“停止”，产生一串数字，再把这个数字与后台的数字对比，如符合，就中奖。 -Digital ERNIE device, click " Start"　digital began to roll, then press " stop" , resulting in a string of numbers, then this figure compared with the background figures, who meet to win.