The present disclosure relates to an electronic device which is sensitive to touch, and an electronic note system using the same. An electronic device according to one exemplary embodiment includes a wireless communication unit to receive color information from an external touch tool via a wireless communication, a display unit to output an image object displayed with a color corresponding to the received color information, and a controller to activate an electronic note function in response to a touch input applied onto the image object, wherein the controller controls the display unit to display information with a color corresponding to the color information, the information being input by a touch input applied onto the display unit.