17. An apparatus comprising a touch screen and a controller, the controller being configured to: display on the touch screen a vowel that is selected based on a length of a dragging gesture, such that a count of strokes in the vowel is proportional to the length of the dragging gesture, wherein: (a) when the length of the dragging gesture is equal to or less than a preset first length, one of “ ” or “ ” is displayed; (b) when the length of the dragging gesture is larger than the preset first length and equal to or less than a second length, one of “ ”, “ ”, “ ”, and “ ” is displayed; and (c) when the length of the dragging gesture is larger than the second length, one of “ ” or “ ” is displayed.
17. An apparatus comprising a touch screen and a controller, the controller being configured to: display on the touch screen a vowel that is selected based on a length of a dragging gesture, such that a count of strokes in the vowel is proportional to the length of the dragging gesture, wherein: (a) when the length of the dragging gesture is equal to or less than a preset first length, one of “ ” or “ ” is displayed; (b) when the length of the dragging gesture is larger than the preset first length and equal to or less than a second length, one of “ ”, “ ”, “ ”, and “ ” is displayed; and (c) when the length of the dragging gesture is larger than the second length, one of “ ” or “ ” is displayed. 18. The apparatus of claim 17 , wherein: when the length of the dragging is equal to or less than the preset first length and the dragging gesture is performed in a horizontal direction “ ” is displayed, and when the length of the dragging is equal to or less than the preset first length and the dragging gesture is performed in a vertical direction, “ ” is displayed.