Multiple-display method, machine-readable storage medium and electronic device

According to an embodiment of the present invention, a multiple-display method on a first electronic device includes: a step of executing a first and a second applications; a step of transmitting screen data of the second application among the first and the second applications to a second electronic device; a step of receiving user input data from the second electronic device; and a step of changing the screen data of the second application based on the user input data, and transmitting the changed screen data of the second application to the second electronic device.