1. A control device for a display device including a plurality of scanning lines, a plurality of data lines traversing the plurality of scanning lines, and a plurality of pixels disposed at positions corresponding to intersections between the plurality of scanning lines and the plurality of data lines, the control device comprising: displaying a first character inputted in a predetermined region of the display device; and thereafter, displaying a second character different from the first character, superposed on the first character displayed in the predetermined region.