Abstract: A data processing apparatus includes a hard key, a display, and a display control unit that displays on the display a soft key and an entry field. The display control unit displays a hard key image or a hard key acceptability image in the entry field, when an input with the hard key to the entry field and an input with the soft key to the entry field are both allowed. But the display control unit does not display the hard key image or the hard key acceptability image in the entry field, when the soft key input to the entry field is allowed and the hard key input to the entry field is not allowed.

Abstract: A data processing apparatus includes a hard key, a display, and a display control unit that displays on the display a soft key and an entry field. The display control unit displays a hard key image or a hard key acceptability image in the entry field, when an input with the hard key to the entry field and an input with the soft key to the entry field are both allowed. But the display control unit does not display the hard key image or the hard key acceptability image in the entry field, when the soft key input to the entry field is allowed and the hard key input to the entry field is not allowed.

Abstract: An image forming system includes an image forming apparatus and an upper device connected to the image forming apparatus through a communication path. The upper device includes a service attribution information input unit for inputting service attribution information containing service identification information; a service style table unit for containing a plurality of service styles each formed of a service setting value; and a service style deployment unit for selecting the service style according to the service identification information. The image forming apparatus includes a service attribution information storage unit for storing the service attribution information; and a service setting value storage unit for storing the service setting value. The service style deployment unit selects the service style when the service attribution information is input. Then, the upper device transmits the service setting value and the service attribution information to the image forming apparatus.