Abstract
This paper describes support-equipment of operating a personal computer for users who have an obstacle on the regions of upper limb. The user wore a head set device with an angle sensor on the top of head and a distance sensor in front of mouth. Angle sensor could measure the roll and pitch angles of head, and distance sensor could confirm whether mouth was opened or not. In mouse operations, cursor could be moved according to the direction and magnitude of the tilted head angle. Click operation mode were started by opening the mouth for two seconds, and then each functions were executed by tilting the head.
