PURPOSE: To shorten transaction time by making it possible to remarkably improve operability and to perform an operation in short time by making a customer perform the operation, making him easily understand the portion to be accessed of an operation part.

CONSTITUTION: All the operation items required for a transaction are always displayed altogether on a CRT 1 during a transaction. The operation items are discriminated in colors before and after an operation. The illustration composed of the guide words showing operation contents, the image of the operation part, the image shown by magnifying the portion to be operated in this operation part and the image corresponding both of these images is displayed.