Abstract: A key structure including at least two protruding keys and a key frame is provided. The at least two protruding keys are arrayed adjacently. Each of the at least two protruding keys has a first side edge, a second side edge and a protrusion. The second side edge is opposite to the first side edge. The protrusion has a curved-convex surface, a first side surface and a second side surface. The curved-convex surface is getting protruding inwardly from the first side edge and the second side edge. The top end of the curved-convex surface has a crest line. The first side surface passes through the end points of the first side edge, the second side edge and the crest line in the same side. The second side surface is opposite to the first side surface. The key frame is used for carrying the at least two protruding keys.

Abstract: A key structure including at least two protruding keys and a key frame is provided. The at least two protruding keys are arrayed adjacently. Each of the at least two protruding keys has a first side edge, a second side edge and a protrusion. The second side edge is opposite to the first side edge. The protrusion has a curved-convex surface, a first side surface and a second side surface. The curved-convex surface is getting protruding inwardly from the first side edge and the second side edge. The top end of the curved-convex surface has a crest line. The first side surface passes through the end points of the first side edge, the second side edge and the crest line in the same side. The second side surface is opposite to the first side surface. The key frame is used for carrying the at least two protruding keys.

Abstract: An electronic device. The electronic device comprises a body, a first supporting member, a second supporting member, and a third supporting member. The body is abutted the first supporting member. The second supporting member is detachably connected to the first supporting member, forming a first angle. The third supporting member is detachably connected to the second supporting member, forming a second angle. The electronic device is selectively positioned upright on a horizontal plane or hung on a vertical plane. The first and second supporting members are connected to support the body in an upright position on a horizontal plane. When the first, second, and third supporting members are connected to form a hook for hanging on the vertical plane, the first supporting member is engaged with the body such that the body is hung on the vertical surface.

Abstract: A reproducing apparatus and a retractable feeding apparatus thereof. The reproducing apparatus comprises a body and a retractable feeding apparatus. The body comprises a feeding portion and a feeding opening formed on the feeding portion. The retractable feeding apparatus has a tray movable between a retracted position and a stretched position. The tray includes a rotation shaft and a supporting surface. When the tray is disposed in the retracted position, the tray is received in the feeding portion, and the supporting surface faces the feeding portion. When the tray is disposed in the stretch position, the tray is rotatable between a retracted angle and a feeding angle by the rotation shaft, and the supporting surface aligns to a feeding opening in the feeding angle.

Abstract: An electronic device. A body has an engaging portion. A frame is hinged to the body, rotatable between a first position and a second position. The frame comprises a recess. The engaging portion is disposed in the recess and engages the body and the frame, disposing the frame in the first position, substantially parallel to the body. When the frame is in the second position, the body and the frame form a first angle.