지정품명부호 검색

상부가 개방된 소형 상자내에 장치된 구체 가 포함된 장치로서 이장치가 고정된 위치 에서 이구체를 전면,후면,측면 방향으로 수동 회전할수 있다.이 구체의 운동으로 신호를 발생시킨다

A device which includes a sphere mounted in a small open-topped box. The sphere is hand-operated by rotating it in a backward, a forward, or a sideway direction while maintaining the device in a fixed location. The movement of the sphere generates a signal which may be used to move a cursor and/or tracking symbol on the face of a display, such as a cathode ray tube; to input data into an electronic system; and/or to control the operation of a system. It may or may not include additional input devices, such as switches or variable resistors.