To solve a problem that, at the present, the most excellent system as a Chinese vocal sound input system is one for dividing a final keyboard which is unfamiliar with automatic alternation by a one-time key stroke and a two-time key stroke of an initial keyboard in a dual-use system for automatically alternating the initial keyboard and the final keyboard, however, the case that an input of one Chinese sound is performed by two key strokes, and the case that the input is performed by three key strokes are mixed, thus causing a rhythm disturbance of the input.SOLUTION: There is employed a system for dividing a final keyboard by a key stroke of an initial code key 1 and a key stoke of an initial code key 2, thus eliminating a rhythm disturbance of an input.SELECTED DRAWING: Figure 1
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