1. An electronic apparatus for inputting Chinese characters by utilizing a phonetic input method, comprising: a plurality of input keys divided into three groups: initial consonant keys, compound vowel keys, and medial vowel keys; and a switch circuit used for switching the function of some of the initial consonant keys into that of tone keys after an user presses one of the plurality of input keys to determine a first phonetic symbol of a phonetic symbol combination.
1. An electronic apparatus for inputting Chinese characters by utilizing a phonetic input method, comprising: a plurality of input keys divided into three groups: initial consonant keys, compound vowel keys, and medial vowel keys; and a switch circuit used for switching the function of some of the initial consonant keys into that of tone keys after an user presses one of the plurality of input keys to determine a first phonetic symbol of a phonetic symbol combination. 2. An electronic apparatus according claim 1 , wherein the electronic apparatus comprises 6 of the initial consonant keys, 3 of the compound vowel keys, and 3 of the medial vowel keys.