1. A device of inputting characters, comprising: a character storage unit for storing character information; a display unit; a direction indicating unit for performing direction indicating actions in a first direction and a second direction; a detecting unit for detecting a direction indicating action in the direction indicating unit; wherein the character inputting device further comprises: a display area generating unit for generating a character display area through the display unit, the character display area comprising a character browsing region and an input character display region; the character browsing region comprising a first direction sub-region corresponding to a first direction indicating action and a second direction sub-region corresponding to a second direction indicating action, for displaying characters according to the direction indicating actions; a decision unit for making a decision of displaying a character or confirming a current character as an input character according to the direction indicating action in the direction indicating unit detected by the detecting unit; wherein the action of making a decision comprises: upon detecting a change in directions indicated by two successive direction indicating actions between the first direction and the second direction, displaying, in the input character display region, the current character displayed in the character browsing region, switching between the first direction sub-region and the second direction sub-region of the character browsing region according to a direction indicated by the latter direction indicating action, and performing an action of selecting a next character corresponding to the latter direction indicating action in the switched direction sub-region.