In a case where a predetermined region to perform a next operation on an operation screen relative to a touch position onto a touch panel is made a destination, a guide device makes a force sense presenter generate a guide-use virtual force sense directed to the destination by using relative position information, received from a main body apparatus, up to the destination relative to the touch position.

In a case where a predetermined region to perform a next operation on an operation screen relative to a touch position onto a touch panel is made a destination, a guide device makes a force sense presenter generate a guide-use virtual force sense directed to the destination by using relative position information, received from a main body apparatus, up to the destination relative to the touch position.

Disclosed is a button having variable Braille modules. The button is structured such that a plurality of protrusions is moved up and down to display information such as Braille words, figures, and images so that visually impaired people can read the information through tactile sensation of their fingers.

The present invention provides a key structure and a manufacturing method thereof. The key structure includes a keycap made of a first material and a graphics made of a second material. A part of the graphics is filled in a groove that extends downwards from an upper surface of the keycap, and an other part of the graphics is exposed outside the groove for press, and the graphics is molded by means of a resin dispensing process. In addition, the present invention further provides a keyboard devices that applies the foregoing key structure.