11. A method of displaying an available character capacity, comprising: calculating the available character capacity and available character capacity percentage based on characters entered by a user; displaying the entered characters; displaying a background in a first specific color when the calculated available character capacity percentage is between a first value and a second value; displaying the background in a second specific color when the calculated available character capacity percentage is between the second value and a third value, wherein the second value is less than a first value and the second value is greater than the third value; and changing a display type to a text when the available character capacity percentage is zero.
11. A method of displaying an available character capacity, comprising: calculating the available character capacity and available character capacity percentage based on characters entered by a user; displaying the entered characters; displaying a background in a first specific color when the calculated available character capacity percentage is between a first value and a second value; displaying the background in a second specific color when the calculated available character capacity percentage is between the second value and a third value, wherein the second value is less than a first value and the second value is greater than the third value; and changing a display type to a text when the available character capacity percentage is zero. 12. The method according to claim 11 , wherein the third value is zero.