Abstract: According to one embodiment, an electronic device communicates with display devices configured to be combined with each other to display single image data. The electronic device includes an input controller and a transmitter. The input controller receives image data including both images of the display devices and images of identification information displayed on screens of the display devices. The transmitter transmits a first instruction for assigning at least one of display positions, rotation angles, and reduction and enlargement ratios of display ranges of the single image data to be displayed on the display devices. The first instruction is determined by using the image data.