Private? Sub？ Command 1_Click()
Timer 1. Interval? =? 1
End? submarine
Private? Sub？ Command2_Click()
Timer 1. Interval? =? 0
End? submarine
Private? Sub？ Timer 1 _ Timer ()
Label 1。 Title? =? k
k？ =? k？ +? 1
What if? k？ & gt？ 9? then what k？ =? 0
End? submarine