Patent attributes
A display region of an electronic device is enlarged. Alternatively, a display region of an electronic device is protected. Alternatively, a display device for extending a display region is provided. A system includes an electronic device including a first display portion positioned on a first surface including an upper surface of a housing and a second display portion positioned on a second surface including a first side surface of the housing, and a display device including a third display portion positioned on a third surface of a support portion and a connection portion having a function of connecting with the housing and a function of reversibly changing the relative positions of the support portion and the housing between a first configuration and a second configuration. The first configuration is a configuration in which the support portion covers the first display portion such that the second display portion is visible. The second configuration is a configuration in which the support portion and the housing are opened such that the first display portion, the second display portion, and the third display portion are visible.