Option Compare Database
Private Sub 乘法_keypress(keyascii As Integer)
If keyascii < Asc("0") or keyascii > Asc("9") Then
keyascii = 0
   Val(乘数.Value) = 0
   End If
   End Sub

Private Sub 积_gotfocus()
积.Value = Val(乘数.Value) * Val(被乘数.Value)
End Sub
Private Sub 商_gotfocus()
商.Value = Val(Val(除数.Value) / Val(被除数.Value))
End Sub
Private Sub 积商和_gotfocus()
积商和.Value = Val(积.Value) + Val(商.Value)
End Sub
Private Sub 积商差_gotfocus()
积商差.Value = Val(积.Value) - Val(商.Value)
End Sub
Private Sub 积商积_gotfocus()
积商积.Value = Val(积.Value) * Val(商.Value)
End Sub
Private Sub 积商商_gotfocus()
积商商.Value = Val(积.Value) / Val(商.Value)
End Sub