user can set the display content in the display setup ,as shown in the picture 6.8-4, if all the value is 0 then will automatic to display all digit value(notes: if the digit is not enough ,then add 0 in front of the value ,when not display date,then can transfer the date into hours and accumulation as shown in the picture 6.8-5, when there is no hour display ,then will transfer the hour into minutes and so on)