Abstract: A rack frame includes a bottom frame defining a first opening on an outer side, a strengthening board fixed on the bottom frame, and a strengthening leg fixed on the strengthening board. The strengthening board includes a baseboard and an upright board extending from a edge of the baseboard. The upright board defines a third opening. The upright board is fixed on the outer side of the bottom frame. The strengthening leg includes a diagonal supporting portion fixed on the baseboard, and a received portion horizontally extending from a top edge of the diagonal supporting portion. The received portion is received in the third and first openings. The diagonal supporting portion defines a fourth opening for fixing the strengthening leg on the strengthening board manually.

Abstract: A data cable includes a first connector, two bolts, a number of wires extending from the first connector, and at least one connector electrically connected to the wires. The first connector includes an insulated main body. The main body includes an elongated installing portion and a short connection portion extending from a rear side of the installing portion. Opposite ends of the installing portion each define a through hole, and opposite ends of the connection portion each define a receiving hole. The bolts are configured to be detachably received in the receiving holes, and operable to mount the first connector to an object via the through holes.

Abstract: An illumination apparatus including an LED comprises a battery holder, an AC/DC adapter interface, an LED unit, and a switch unit. The battery holder is configured to receive a battery. The AC/DC adapter interface is connected to an AC/DC adapter. When the AC/DC adapter is not connected to the AC/DC adapter interface, the switch unit is turned on to allow the driving unit to receive power from the battery. When the AC/DC adapter is connected to the AC/DC adapter interface, the switch unit is turned off to allow the driving unit to receive power from the AC/DC adapter. A driving circuit applied in an illumination apparatus is also provided.

Abstract: An exemplary electronic device includes a detecting component and a storage unit. The detecting component generates detecting signals when the electronic device has been disassembled. The storage unit stores disassemble history information based on detecting signals received from the detecting component.

Abstract: An output voltage adjustment circuit for buck circuits includes a microcontroller, first to eighth keys, and a display unit. The first to eighth keys input voltage adjustment signals to the microcontroller. A first input pin of the microcontroller is connected to a voltage output terminal. A second resistor is connected between the first input pin of the microcontroller and ground. A first to a sixth input/output pin of the microcontroller are connected to the display unit. A first to an eighth output pin of the microcontroller are connected to a pulse width modulation (PWM) controller. The first to eighth keys are selectively activated to provide voltage adjustment signals to the microcontroller, sampling output voltages of the voltage output terminal, comparing with a predetermined voltage, controlling the PWM controller to fine tune the duty cycle to output a stable voltage from the voltage output terminal. The display unit displays the voltages on the voltage output terminal.

Abstract: A printed circuit board layout method includes the following steps. A printed circuit board with a signal layer, and a pair of differential transmission lines positioned on the signal layer is provided. A first distance is determined, when the distance between the pair of differential transmission lines is greater or less than the first distance, an eye width and an eye height of an eye diagram obtained at output terminals of the pair of differential transmission lines increases. A second distance less than the first distance is set between the pair of differential transmission lines which makes the eye width and the eye height meet requirement of the differential transmission lines for the eye diagram.

Abstract: An oscillograph can identify signals of a serial data bus. The signal identifying method triggers communication channels of the oscillograph, measures a rise time and a fall time for each captured signal, and sets a sender terminal (ST) and a receiver terminal (RT) for each of the captured signals according to the measured results. The signal identifying method determines the ST and RT for each of the captured signals after the oscillograph is triggered. If the determined ST of each of the acquired signals is identical to the set ST and the determined RT of the each of the acquired signals is identical with the set RT, the signal identifying process is completed and a report is generated to record the signal identifying result.

Abstract: A wireless device triggers pairing or un-pairing between the wireless device and another wireless device. The wireless device further exchanges media access control (MAC) addresses, pairing magic numbers (PMNs), and pairing indices with the another wireless device so as to establish the pairing with the another wireless device upon the condition that the wireless device triggers the pairing. The wireless device further exchanges the MAC addresses, the PMNs, and the pairing indices with the another wireless device so as to establish the unpairing with the another wireless device upon the condition that the wireless device triggers the unpairing. The pairing magic numbers are operable to identify the pairing between the wireless device and the another wireless device. The pairing indices are operable to launch the MAC addresses, the PMNs, and the pairing indices.

Abstract: A display includes an outer frame defining an circumferential opening in a center, a protective glass accommodated in the opening, an inner frame mounted to the outer frame below the glass, and a liquid crystal display panel mounted to the inner frame. The inner side of the outer frame bounding the opening defines a latching slot to receive sides of the protective glass. The protective glass protects the liquid crystal display panel from being scraped or scratched.

Abstract: A hinge mechanism includes a fixing member, a rotary member, a rotary member, an adjusting member and a support member, all of which are interconnected. The rotary member is capable of being positioned in a preset manner to form an acute angle relative to the fixing member, the adjusting member is capable of being positioned in a preset manner to form an acute angle relative to the rotary member; and the support member is capable of being positioned in a preset manner to form an obtuse angle relative to the adjusting member. An electronic device using the hinge mechanism is also provided.

Abstract: An apparatus for processing coating material includes a crucible having a receptacle for receiving coating material, a drive member having a drive shaft, a cover coupled to the drive shaft, and a monitor system including a light source and a camera module. The cover includes a flat surface, a slot defined in the flat surface, a first through hole and a second through hole respectively communicating with opposite ends of the slot. The drive shaft drives the cover to rotate between a closed position where the cover covers the receptacle, and the flat surface presses and flattens the coating material, and an open position where the cover is moved away from the receptacle. The light source is for emitting light through the first through hole to illuminate the coating material. The camera module is for capturing images of the illuminated coating material through the second through hole.

Abstract: A broadband antenna printed on a substrate. The substrate includes a first surface, a second surface perpendicular to the first surface, and a third surface parallel to the first surface. The broadband antenna includes a grounding portion, a feeding portion, and a radiating portion. The grounding portion is located on the first surface. The feeding portion feeds electromagnetic signals and includes a first feeding section printed on the third surface and a second feeding section printed on the second surface. The radiating portion includes a first radiating section, a second radiating section, and a third radiating section. The first radiating section is printed on the first surface. The second radiating section comprises a first radiating segment and a second radiating segment. The third radiating section is printed on the second surface and formed a ladder portion.

Abstract: A power supply unit includes a box, a circuit board, and a power connector. A first connector is set on the sidewall of the box and electrically connected to a rectifier of the box. The circuit board includes a number of output terminals set on a first side, and a second connector set on a second side and electrically connected to the first connector. Each of the output terminals is connected to the second connector. The power connector is selectively connected to some of the output terminals via a cable and connected to a power interface, the power connector is connected to the first end of the cable, and the second end of the cable is selectively connected to corresponding output terminals according to a required input voltage of different motherboards, the power connector outputs power signals to the motherboard and receives control signals from the motherboard.

Abstract: A field emission display includes an insulating substrate, a number of first electrode down-leads, a number of second electrode down-leads, and a number of electron emission units. The first electrode down-leads are set an angle relative to the second electrode down-leads to define a number of cells and a number of intersections. Each electron emission unit is located at one of the plurality of intersections and in at least two adjacent cells. The electron emission unit includes a first electrode, a second electrode, and a plurality of electron emitters. The second electrode extends surrounding the first electrode. The plurality of electron emitters located on and electrically connected to at least one of the first electrode and the second electrode. A field emission display is also provided.

Abstract: A connecting mechanism includes a first connecting member, a second connecting member, a first conduit and a second conduit. The first connecting member includes a first cylinder and a first piston movably accommodated within the first cylinder to divide the first cylinder into a first space on the one side of the first piston and a second space on the opposite side of the first piston. The second connecting member includes a second cylinder and a second piston movable accommodated within the second cylinder to divide the second cylinder into a third space on the one side of the second piston and a fourth space on the opposite side of the second piston. The first conduit communicates the first space with the third space. The second conduit communicates the second space with the fourth space. An electronic device using the connecting mechanism is also provided.

Abstract: An enclosure of an electronic device includes a chassis and a cover plate. An opening is defined in the chassis. The chassis includes a top plate and a flange substantially perpendicular to the top plate. A groove is defined in the flange. The groove extends along a direction substantially parallel to a plane defined by the top plate. The cover plate covers the opening of the chassis and partially covers the groove.

Abstract: The present invention relates a binder composition and a photosensitive composition including the binder composition. In one embodiment, a binder composition includes a copolymer of monomer M1, M2, M3, M4, an iso octyl 3-mercaptopropionate and a thermal initiator, wherein the monomer M1 can be represented by the following formula: the monomers M2, M3 and M4 can be represented by the following formula, however the monomers M2, M3 and M4 are different from each other, wherein R1, R2, R3 can be selected from the group consisting of hydrogen and alkyl group, R4 is an aromatic group, R5 can be selected from the group consisting of hydrogen, aromatic groups, alkyl groups, substituted alkyl groups and alkyl groups interrupted by an oxygen atom. The copolymer has good developing ability and a black matrices made therefrom has good mechanical properties.

Abstract: A field emission electron source having carbon nanotubes includes a CNT string and a conductive base. The CNT string has an end portion and a broken end portion. The end portion is contacted with and electrically connected to the surface of the conductive base. The CNTs at the broken end portion form a tooth-shape structure, wherein some CNTs protrude and higher than the adjacent CNTs. Each protruded CNT functions as an electron emitter.

Abstract: In a method of managing process factors that influence electrical properties of printed circuit boards (PCBs), n process factors are arranged in an order according to different influence to one kind of electrical property of the PCBs. The different influence is determined by first experiments designed using the Taguchi method. M process factors that have important influence to the electrical property are obtained from the n process factors according to the order to design second experiments. A computing formula for the electrical property is fitted using the m process factors according to simulated results of the second experiments, and a variation range of each of the m process factors is computed according to the computing formula.

Abstract: A loudspeaker module includes a hollow main body, two rotatable connecting portions, and two loudspeakers. The hollow main body includes two opposite sidewalls. Each of the opposite sidewall defines a first opening, an inner sidewall of the first opening defines an annular rotating slot. One end of the connecting portion extends an annular flange shaped corresponding to the rotating slot. The two rotatable connecting portions are respectively rotatably connected to the main body via the flange rotating about the rotating slot. Two loudspeakers are disposed in an end of the corresponding rotatable connecting portion away from the main body.