To enable a user to memorize hardly visible character positions and key arrangement with fingers in operating a keyboard of a personal computer and to early learn a blind touch to type characters without viewing the keyboard and to impart such a function and structure as to allow the effective utilization of the entirely new space by using this appliance even after the learning to the appliance.

The front surface of the keyboard is provided with a virtual keyboard stuck with the print or keyboard seal exactly the same as the keyboard of the personal computer in order to enable the user to be get used to key operation without viewing the keyboard of the personal computer as far as possible, by which the user is made to eventually touch the keyboard while making the check of the key positions and arrangement by the eyes and fingers and the training of touch sensation. The appliance is thus provided with the function to enable the fingers to learn the key positions of themselves.