Abstract: A tidying device to facilitate the securing of a cable to a tidying slot of an enclosure includes a controller and a gripping module mounted to the controller. A gap is defined for receiving the cable. A pressing module is slidably mounted to the controller. An end of the cable is secured to the enclosure. The tidying device is movable relative to the enclosure to move the cable to be aligned with the tidying slot. The pressing module is slidable relative to the controller to engage the cable in the tidying slot under a control of the controller.

Abstract: A button assembly includes a keycap, a washer, a positioning member, and a fixing member. The keycap includes a resisting member and an operating member. The operating member extends through a through hole of a sidewall of an electronic device and extends external to the sidewall of the electronic device. The washer is provided between the resisting member and the sidewall to seal a gap between the resisting member and the sidewall. The washer pivots on the operating member. The positioning member is fixed to a bottom of the electronic device. The positioning member separates from the sidewall of the electronic device by a preset distance. The fixing member affixes a flexible circuit board of the electronic device to the positioning member. The fixing member is provided to position a switch of the flexible circuit board abutting against the resisting member at a position opposite to the keycap.

Abstract: A power on circuit is connected between a video graphics array (VGA) connector of a display and a super input output (SIO) chip of a motherboard. The power on circuit includes first to fourth electronic switches and a timer. When a power button of the display is pressed, a serial data line pin of the VGA connector outputs a high level signal to turn on the first electronic switch, the second electronic switch is turned on, the fourth electronic switch is turned on, and the timer outputs a periodic pulse signal. When the pulse signal outputted from the timer is at a high level, the third electronic switch is turned on, the SIO chip receives a low level signal from the fourth and third electronic switches, and the motherboard is turned on.

Abstract: An electronic device includes a housing and an electronic card connector. The housing includes a supporting wall and a number of peripheral sidewalls. The supporting wall and the number of peripheral sidewalls define an accommodating space. The peripheral sidewall defines a first through hole and a second through hole. The electronic card connector includes a tray being received in the accommodating space, a first geared rack being received in the second through hole, a cylinder gear being rotatably coupled to the supporting wall and meshed with the first geared rack, and a second geared rack being coupled to the supporting wall and meshed with the cylinder. The tray is supported by the second geared rack. The cylinder gear and the second geared rack can be both driven to move to eject the tray ejected from the accommodating space.

Abstract: An electronic card connector includes a tray, a press member and a fixing member. The tray defines a defined space for accommodating an electronic card and a notch. The press member is slidably attached to a supporting wall. The press member includes a press body and a geared rack fixed to the press body. The geared rack includes a number of first gears protruding therefrom. The fixing member is rotatably attached to the supporting wall. The fixing member includes a geared portion and a hook protruding from the geared portion. The geared portion includes a number of second gears meshing with the first gears. The hook is capable of being received in the notch to engage the tray with the housing. The fixing member is driven to rotate by the press member to move out from the notch to disengage the tray from the housing.

Abstract: An electronic device includes a housing and an electronic card connector. The peripheral sidewall defines a through hole. The electronic card connector includes a tray, a fixing member, a push rod and a connecting rod. The tray defines a defined space for receiving an electronic card and at least one notch. The fixing member includes at least one elastic arm having a hook. The push rod partially passes through the through hole and protrudes from of the housing. The at least one connecting rod connects the second end to the at least one elastic arm. When the at least one hook engages with the at least one notch, the tray is engaged with the housing, and when the push rod is driven to disengage the at least one hook from the at least one notch, the tray is disengaged from the housing.

Abstract: A power chip detecting device, applied in a server, includes a power chip, a power sequence control module, a base management controller, a GPIO module, and a signal detecting module. The power sequence control module sends an initial power enable signal to the power chip after the server is switched on, and the power sequence control module receives an initial power good signal from the power chip after the power chip receives the initial power enable signal. The signal detecting module sends a time abnormal result to the GPIO module after determining that time difference between sending out of the initial power enable signal and the initial power good signal is less than a reference value. The GPIO module sends the time abnormal result to the base management controller.

Abstract: A laser machining device includes a laser emitting device, a supporting device including a supporting surface, a controller, and optical detecting units mounted on the supporting surface. The laser machining device sets an X-Y coordinates having an original point and moves to being substantially above one of the optical detecting units. A laser beam is emitted at a plurality of microscopically-close positions and the values of the luminous flux of the received laser beams are detected, the values being sent to the controller. The controller compares the detected values to determine the greatest value, and corrects the position of the original point to accord with the position of the greatest detected value.

Abstract: An audio output circuit applied in an electronic device includes a filter capacitor and a transistor. A base of the transistor is connected to an audio processing unit, an emitter of the transistor is connected to a voltage port, a processor and an earphone detecting unit of the electronic device is electrically connected to a collector of the transistor. The filter capacitor is connected between the base of the transistor and the ground. The filter capacitor filters the audio signals generated by the audio processing unit, to ensure that and the transistor is always turned on.

Abstract: Electronic device enclosure includes a base plate, a bracket, and a sliding pole slidably mounted to the bracket. The base plate includes a number of protrusion portions. A locking hole is defined in each of the number of protrusion portions. The locking hole includes two opposite first sides and two opposite second sides. A resisting block extends from the sliding pole. The resisting block includes two opposite third sides and two opposite fourth sides. The third sides are aligned to the corresponding first sides. The resisting block is passed through and rotated in the locking hole. The third sides are misaligned to the corresponding first sides. The resisting block is locked in the locking hole to mount the bracket to the base plate.

Abstract: A jig for securing a thimble, includes a securing block, a pressing plate, a locking assembly. The securing block defines a step hole and a cutout. The pressing plate presses the thimble in the receiving slot. The pressing plate defines an avoiding hole. A pair of short sides and a pair of long sides bound the avoiding hole. The locking assembly includes a pole and an adjusting nut. The pole is inserted in the step hole and the avoiding hole. The adjusting nut includes a pair of long edges and a pair of short edges. The adjusting nut rotates on the pole to align the long edge with the short side to have the adjusting nut press the pressing plate, and rotate on the pole aligning the long edge to the long side locating the adjusting nut in the avoiding hole.

Abstract: An electronic device includes a power supply, a power consuming module, and a power control module. The power control module includes a capacitor, a detecting unit, and a control unit. A first end of the capacitor is connected to the power supply. Another end of the capacitor is grounded. The control unit includes a switching element. When the electronic device is powered on, the detecting unit controls the switching element to turn off, and the power supply supplies power to the power consuming module to charge the capacitor. When the electronic device is powered off, the capacitor discharges to supply power to the power consuming module. The detecting unit detects whether data storage of the electronic device is completed. When the data storage is completed, the detecting unit controls the switching element to turn on, causing the capacitor to discharge to ground. A power control module is also provided.

Abstract: A keyboard for supporting an electronic device includes a keyboard body and an adjusting device. The keyboard body defines a receiving portion for receiving an electronic device, a first adjusting hole, and a second adjusting hole. The adjusting device includes a stopping plate received in the receiving portion, a first adjusting pole, and a second adjusting pole. The first adjusting pole extends out of the first adjusting hole to abut against the stopping plate. The second adjusting pole extends out of the second adjusting hole to abut against the stopping plate. An angle is defined between the first adjusting pole and the electronic device and the angle is adjustable based on the first adjusting pole and the second adjusting pole being mounted to a plurality of positions.

Abstract: An exemplary protection circuit is provided to provide a controlled, latency-free, steady voltage. The circuit includes a switch module, an induction, a response module, a protection chip, and a sequence controller. The protection chip turns on the switch module when the voltage provided by a capacitor is less than a threshold voltage, thus the connection between the power supply device and the conversion circuit is enabled. The protection chip further outputs a high level signal to the sequence controller upon receiving an induction signal from the induction module. The sequence controller outputs a low level signal to the response module upon receiving the high level signal, to turn off a connection between the first end of the capacitor and ground, otherwise, a high signal is output to turn on the connection between the first end of the capacitor and ground.

Abstract: A motherboard includes a platform controller hub (PCH) chip, a connector, and a switch chip. The PCH chip includes a first group of pins and a second group of pins. The switch chip is connected to either the first group of pins or the second group of pins according to a type of a card connected to the connector.

Abstract: A protection circuit includes a voltage conversion unit, a voltage clamping unit, and a power supply. The voltage conversion unit converts a first voltage from the power supply into a second voltage and outputs the second voltage to an electronic element. The voltage clamping unit stops the power supply from operating if the second voltage is greater than a rated voltage of the electronic element.

Abstract: A printed circuit board (PCB) includes a top outer layer, a bottom outer layer, a signal transmission layer, an inner signal transmission layer, and a via system defined in the PCB. The via system includes two pairs of vias configured to transmit signals from a transmitter to a receiver. A signal transmission pathway is defined in the top outer layer, the signal transmission layer, and the inner signal transmission layer. Signals are sent from the transmitter to a first pair of vias, the signals are transmitted from the first pair of vias to a second pair of vias, and the signals are sent from the second pair of vias to the receiver. The two pairs of vias and the signal transmission pathway provide impedance matching to the signals.

Abstract: An audio control system installed on an electronic device includes a switch switching between a first mode and a second mode, a switching module, a microphone, a microphone control module, a speaker, a speaker control module, a signal radiating module, and a signal receiving module. When the switch is switched to the first mode, the switching module controls the microphone control module to transmit audio data of microphone to the signal radiating module to radiate the audio data via a wireless network. When the switch is switched to the second mode, the switching module controls the microphone control module to transmit the audio data of microphone to the speaker to make sound via the speaker control module.

Abstract: A positioning apparatus includes a computer chassis and a positioning device. The computer chassis secures a plurality of expansion cards and includes a cover. The cover comprises a first flange and a second flange opposite to the first flange. The positioning device includes a securing member and a positioning member secured to the securing member. The securing member is secured to the first flange and a second flange. The positioning member is pressed on the plurality of expansion cards to prevent the plurality of expansion cards from moving.

Abstract: A control circuit for booting a number of devices in a certain order includes two delay circuits and three switch circuits, the first switch circuit and the first delay circuit receiving a power good signal and a voltage signal from a power supply unit and thus allowing a first device to boot and the first delay circuit outputting a first delay signal after a set time, to the second switch circuit and the second delay circuit, which repeat the process of the first delay circuit and switch circuit, to boot the remaining devices.