1. An automatic spelling correction apparatus with a plurality of cycled buttons corresponding with the Zhu Yin Fu Hao phonetic symbol system, wherein the sum of the cycled buttons is less than the sum of a plurality of characters, comprising: a display unit; a storage device capable of storing a character group table and a plurality of character combination records, the character group table storing a character sequence associated with each cycled button, each character combination record being composed of the characters representing valid spelling; and a processing unit configured to receive an original character combination and a first character corresponding to a first of the cycled buttons; determining whether the last character of the original character combination and the first character correspond to different cycled buttons; if the last character of the original character combination and the first character correspond to different cycled buttons, executing the following steps: generating a first character combination by appending the first character to the original character combination, determining whether the first character combination is valid spelling; displaying the first character combination on the display unit if the first character combination is valid spelling, and if the first character combination is not valid spelling, searching a second character following the first character along the stored character sequence associated with the first cycled button, generating a second character combination by appending the second character to the original character combination, and displaying the second character combination on the display unit, if the last character of the original character combination and the first character correspond to identical cycled buttons, executing the following step: generating a third character combination by replacing the last character of the original character combination with a relevant character according to the character sequence and the first character until the third character combination matches the character combination record.
3. The apparatus as claimed in claim 1 wherein the apparatus is a handheld communication device.