Abstract
Disabled person who has dysfunctions of upper extremities expands his sphere of activities with the growth of internet technology. They have been used keyboard-cover which was personally made by volunteer of self-help device or physical therapist. However, there is problems of compatibility in keyboard-cover when computer is replaced. In generally, the shape and key arrangement of new keyboard is not same as a former one. Furthermore, the using keyboard-cover has a resistance to move finger. Accordingly, this study was attempted to design and produce a compatible device of key input.
