PURPOSE: To freely input data in the same manner as keyboard input at the time of operation by inputting recognized data from a voice and character recognizing device to a keyboard data input part.

CONSTITUTION: Key input data obtained from a keyboard 3 is temporarily inputted to a character recognizing device or a voice recognizing device 2, and character data or voice data is added to this data, and it is sent to a host computer 1. In this case, key input data and character data or voice data look equal when viewed from the host computer 1. Voice data from the voice recognizing device or character data from the character recognizing device 2 is handled in the same manner as key input data in this manner. Thus, data is inputted in the same manner as keyboard input without changing an already prepared application at the time of application operation.