某银行营业厅共有6个营业窗口，设有排队系统广播叫号，该银行的业务分为公积金、银行卡、理财卡等三种。公积金业务指定1号窗口，银行卡业务指定2、3、4号窗口，理财卡业务指定5、6号窗口。但如果5、6号窗口全忙，而2、3、4号窗口有空闲时，理财卡业务也可以在空闲的2、3、4号窗口之一办理。

客户领号、业务完成可以作为输入信息，要求可以随时显示6个营业窗口的状态。-A banking hall a total of six business window, provident fund, bank cards, financial cards with queuing system radio to tell the number of the bank' s business is divided into three kinds. Fund business specified window, bank card business specified window 2,3,4, financial card business specified window 5,6. But if all busy window 5,6 2,3,4 window free time, the financial card business can also be one of the idle window 2,3,4 handle. Customers collar number, the business is completed can be used as input information the six operating state of the window can be displayed at any time.