Abstract
There are three types of interface. The first that users operate scale variables in every proceures. The second is that users operate name variables. The third is automatic interface. The structure of the each types is defined by common characteristics. There are two types of change in interface history. First type is the change that scale variables exchanged for name variables. This works easy operation and the correspondence of the common objective and dependence on a product. Second type is the change that new scale variables or new name variables are addid. This works difficult operation and the correspondence of the every usre's objective and dependence on a product. This study leads one of the common desgin guides on many interfaces.
