Abstract: A scoring system of automatically detecting body motion includes a storage, a first motion sensor, and a processor. The storage is configured to store standard motion signal data corresponding to a multimedia signal, which the standard motion signal data includes a plurality of scoring segments, and the plurality of scoring segments are generated according to beat data of the multimedia signal and the standard motion signal data. The first motion sensor is configured to receive a first sensing signal, which the first sensing signal is generated by a set of user-motion according to the multimedia signal. The processor is configured to recognize user's motion signal of the first sensing signal and acquire to-be-scored-motion signal data corresponding to the plurality of scoring segments; and compare the to-be-scored-motion signal data corresponding to each of the plurality of scoring segments with the standard motion signal data to generate a score.

Abstract: A connector comprises a supporting member, a movable member and a contact. The movable member is supported by the supporting member so as to be movable in an up-down direction. The movable member is provided with a reference surface and a protection protrusion. The protection protrusion protrudes upward from the reference surface in the up-down direction. The protection protrusion is provided with a protection portion. The contact has a contact portion. The contact portion protrudes upward through the reference surface of the movable member in the up-down direction. The contact portion is positioned inward of the protection portion in a front-rear direction perpendicular to the up-down direction. The movable member moves the contact portion of the contact downward in the up-down direction when a force along an intersecting direction is applied to the protection portion. The intersecting direction intersects with the up-down direction.

Abstract: A connector comprises a supporting member, a movable member and a contact. The movable member is supported by the supporting member so as to be movable in an up-down direction. The movable member is provided with a reference surface and a protection protrusion. The protection protrusion protrudes upward from the reference surface in the up-down direction. The protection protrusion is provided with a protection portion. The contact has a contact portion. The contact portion protrudes upward through the reference surface of the movable member in the up-down direction. The contact portion is positioned inward of the protection portion in a front-rear direction perpendicular to the up-down direction. The movable member moves the contact portion of the contact downward in the up-down direction when a force along an intersecting direction is applied to the protection portion. The intersecting direction intersects with the up-down direction.