To provide a display and an image forming device, capable of restraining unfamiliar feeling of a worker in maintenance or the like, and capable of enhancing working efficiency.

A copying machine 100 detects an orientation of a display screen of the display 2, and changes an image to be displayed on the display screen, when the orientation of the display screen changes, while matched with the change. A state of the copying machine 100 viewed from the worker is determined therein, and the screen is displayed to make the copying machine viewed from the worker get viewed same to a drawing of the copying machine 100 to be displayed on the display 2.