Abstract: A casing of an electronic device including successive pattern structures is provided, including a first body, a second body, a first light emitting pattern, and a second light emitting pattern. The first body includes an outer surface and an inner surface, and the outer surface includes a first side edge. The second body includes an upper surface and a pivoting structure. The upper surface includes a covered area and an exposed area. The first body is pivotally connected to the second body through the pivoting structure, and the pivoting structure is located between the covered area and the exposed area. The first light emitting pattern is located on the outer surface and includes a first end extending to the first side edge. A second light emitting pattern, located on the exposed area, and including a second end. When the inner surface covers the covered area, the first end is aligned with the second end.

Abstract: An electronic system and a control method thereof are provided. The electronic system includes a first device, a second device and a control device. The first device includes a first processor and a first control module, and the first control module is electrically connected to the first processor. The second device is detachably disposed on the first device. The second device includes a second processor and a second control module, and the second control module is electrically connected to the second processor. The control device is detachably connected to the second device, and the first device, the second device and the control device are coupled to each other.

Abstract: An electronic device and a usage method thereof are provided. The electronic device includes a first device, a second device and a control device. The first device includes a first processor and a first control module, and the first control module is electrically connected to the first processor. The second device is detachably disposed on the first device. The second device includes a second processor and a second control module, and the second control module is electrically connected to the second processor. The control device is detachably connected to the second device, and the first device, the second device and the control device are coupled to each other.

Abstract: A waterproof housing including a frame structure and a waterproof structure is provided. The frame structure includes an opening. The waterproof structure is fixed on the frame structure and covers whole of the external surface and the opening of the frame structure. The waterproof structure includes a plurality of ribs extending toward the opening correspondingly and located in the opening. An electronic device is further provided including the waterproof housing and a keyboard module. The keyboard module includes a plurality of keys. The keyboard module is disposed under the waterproof housing and passes into the opening from an underside of the frame structure. The waterproof structure covers the keyboard module disposed in the opening and is fixed between the keys via the ribs. Therefore, the electronic device and the waterproof housing thereof have an improved water-proof function and are convenient in use.

Abstract: A 3-D printing apparatus including a base and a printing head module is provided. The base includes a first supplying platform, a printing bed and a second supplying platform disposed in order along a printing path. The first supplying platform and the second supplying platform carry building powder respectively; the first supplying platform and the second supplying platform are alternately lifted to a printing-reference plane of the base for supplying the building powder to the printing bed. The printing head module is movably disposed above the base and configured to move along a forward direction of the print path to transfer the building powder of the first supplying platform onto the printing bed, and move along a backward direction of the printing path to transfer building powder of the second supplying platform onto the printing bed to form bonded powder layers stacked together to form a 3-D object.

Abstract: A waterproof housing including a frame structure and a waterproof structure is provided. The frame structure includes an opening. The waterproof structure is fixed on the frame structure and covers whole of the external surface and the opening of the frame structure. The waterproof structure includes a plurality of ribs extending toward the opening correspondingly and located in the opening. An electronic device is further provided including the waterproof housing and a keyboard module. The keyboard module includes a plurality of keys. The keyboard module is disposed under the waterproof housing and passes into the opening from an underside of the frame structure. The waterproof structure covers the keyboard module disposed in the opening and is fixed between the keys via the ribs. Therefore, the electronic device and the waterproof housing thereof have an improved water-proof function and are convenient in use.

Abstract: A 3-D printing apparatus including a base and a printing head module is provided. The base includes a first supplying platform, a printing bed and a second supplying platform disposed in order along a printing path. The first supplying platform and the second supplying platform carry building powder respectively; the first supplying platform and the second supplying platform are alternately lifted to a printing-reference plane of the base for supplying the building powder to the printing bed. The printing head module is movably disposed above the base and configured to move along a forward direction of the print path to transfer the building powder of the first supplying platform onto the printing bed, and move along a backward direction of the printing path to transfer building powder of the second supplying platform onto the printing bed to form bonded powder layers stacked together to form a 3-D object.

Abstract: A fitness device includes a chair body carrying a rotating wheel, and parallel support frame bars fixedly mounted at the bottom side of the chair body, each support frame bar defining a first base frame bar portion and a second base frame bar portion that are longitudinally connected in a line and define therebetween a predetermined contained angle facing toward the chair body and smaller than 180 degrees for selectively supporting the fitness device on the floor in two reversed directions for different types of exercises.

Abstract: An illuminating device including a lampshade, a capper, a light source circuit board and a power circuit board is provided. The lampshade has a top surface and an accommodating space, the capper is telescoped on the lampshade, and the top surface of the lampshade is located in the capper. The light source circuit board is disposed at the top surface, having a first inductance coil. The power circuit board is disposed in the accommodating space, having a second inductance coil, wherein the first inductance coil and the second inductance coil are disposed adjacent to each other and spaced apart by a distance. In the illuminating device, power of the power circuit board is generated by induced current from the first inductance coil and the second inductance coil and provided to the light source circuit board for light-emitting.