Abstract: A computer includes a keyboard, a PCB, a south bridge chip, a BIOS chip, a buffer circuit, and a USB switch. The PCB includes a USB connector connected to the keyboard. The BIOS chip is connected to the south bridge. The USB switch includes a control pin and a first output pin. The BIOS chip sends a dormancy command to the keyboard via the south bridge chip after the computer receives a shut-down signal. The south bridge chip sends a first control signal to the control pin to enable the USB switch to turn on the first output pin after the computer is powered off. The keyboard sends a triggering signal to the USB switch. The first output pin sends the triggering signal to the south bridge chip via the buffer circuit to enable the computer to start up.

Abstract: A power on/off control system includes a microcontroller, a setting module connected to the microcontroller, a photoelectric coupler connected to the microcontroller, and a relay connected to the microcontroller. The setting module is used to set parameters, and the parameters include a power-on time and a power-off time. The relay is used to receive alternating current and connected to an electronic device. When the power-on time is ended, the microcontroller is used to send a power-off signal to the photoelectric coupler for turning on the relay, and the relay stops supplying power to the electronic device. When the power-off time is ended, the microcontroller is further configured to send a power-on signal to the photoelectric coupler for turning off the relay, to supply power for the electronic device. The disclosure further offers a power on/off control method.

Abstract: A vending machine includes a casing with an opening, a door assembly slidably attached to the casing, and a door opening/closing assembly. The door opening/closing assembly includes a mounting bracket attached to an inner wall of the casing, a gear rod slidably attached to the mounting bracket, and a driving device engaging with the gear rod. One end of the gear rod is secured to the door assembly. The driving device is capable of sliding the gear rod along the mounting bracket between a closed position, where the door assembly shields the opening, and an open position, where the door assembly is disengaged away from the opening for exposing the opening.

Abstract: A voltage detecting system is configured for detecting a voltage supplied to an electronic device. The voltage detecting system includes a voltage measuring circuit configured to measure the voltage, a voltage converting circuit electrically coupled to the voltage, and a voltage comparing circuit. The voltage measuring circuit has a first measuring range and a second measuring range that is wider than the first measuring range. The voltage converting circuit is capable of the converting the voltage to an output voltage according to a predetermined ratio. The voltage comparing circuit compares the output voltage with a reference voltage. If the output voltage is greater than the reference voltage, the voltage comparing circuit informs the voltage measuring circuit to select the second measuring range. If the output voltage is not greater than the reference voltage, the voltage comparing circuit informs the voltage measuring circuit to select the first measuring range.

Abstract: A power supply detecting circuit for detecting a power supply status of a controlling system of a vending machine, includes a port equipped on the controlling system, a power supply unit, an alarming unit, and a switch unit. The port outputs a high level voltage signal when a normal power is supplied to the controlling system. The power supply unit provides power to the alarming unit. The switch unit is connected between the alarming unit and ground. The switch unit is controlled by the port. The switch unit is turned off to switch off the alarming unit when the high level voltage signal is outputted from the port. The switch unit is turned on to switch on the alarming unit when the normal power is not supplied to controlling system and the high level voltage signal is not outputted from the port.

Abstract: A system for detecting the level of coins in a coin box of a vending machine includes a voltage output circuit, a coin detecting circuit, and an indication circuit. The voltage output circuit receives a DC voltage, and provides a stable reference voltage. The coin detecting circuit receives the stable reference voltage, and detects the resistance of the coins in the coin box on the basis that the aggregate of accumulated coins creates an electrical connection across the coin box in parallel with known-value resistors in the coin detecting circuit. An amplification of the reference voltage takes place and the indication circuit receives the amplified reference voltage, to indicate by display or otherwise that the coin box is filled with coins or is not yet filled with coins.

Abstract: A central control frame includes a main frame, an installation frame slidably mounted in the main frame, and a power supply protector. The installation frame includes a first bracket and a secured bracket. A computer is secured to the first bracket. A power supply protector is secured to the second bracket. An input port of the power supply protector connects to an AC power supply, an output port of the power supply protector connects to the computer, and the power supply protector provides power to the computer when the AC power supply is cut off suddenly, preventing files in the computer from being damaged or lost.

Abstract: In a method for integrating a thunderbolt (TBT) chip on a motherboard of a computing device, the motherboard includes a PCIe slot, and a platform controller hub (PCH) chip. The computing device includes a PCIe card plugged into the PCIe slot. The PCIe card includes a micro controller unit (MCU), and an EEPROM. The TBT chip, the MCU, and the EEPROM are integrated into the PCIe card. The PCH chip communicates with the TBT chip and the MCU through a system management bus of the motherboard. The method defines a TBT protocol parameter list used in the TBT chip, and sets GPIO parameters to support the TBT chip to perform various TBT protocol functions according to the TBT protocol parameter list. The TBT chip executes a TBT protocol function according to a GPIO signal output from the MCU.

Abstract: A water-level detecting system includes a water receiving module located in an electronic device, a first sliding rheostat, a varicap, a frequency-to-voltage converter, a comparing module, and an indicator module. The water receiving module includes a water tank, a floating block received in the water tank, and a connecting portion. The floating block is moved by the rising water level in the water tank to slide the first sliding rheostat. A voltage of the varicap is changeable when the first sliding rheostat slides, and a voltage of the frequency-to-voltage converter is changeable according to the voltage of the varicap. The comparing module compares the voltage of the frequency-to-voltage converter with a predetermined voltage, and the indicator module lights up when the voltage of the frequency-to-voltage converter is greater than the predetermined voltage. The disclosure further offers a water-level detecting method.

Abstract: A delivery detecting system includes a Schmidt trigger circuit for receiving a periodic signal, a differential circuit connected to the Schmidt trigger circuit, and a monostable circuit connected to the differential circuit. The Schmidt trigger circuit is used to convert the periodic signal to a first square signal. The differential circuit is used to convert the first square signal to a triangular signal. The monostable circuit is used to convert the triangular signal to a second square signal. The invention further offers a delivery detecting method.

Abstract: A control circuit for an optical disk drive includes a microphone, an analog-to-digital (A/D conversion) module, a control module, and a processing module configured to compare a digital representation of a spoken command from a user against the operation representation of the control module. If the processing module determines that a spoken command in the analog form, is equal to the digital signal, the control module acts on the command and controls the optical disk drive to change its status.

Abstract: A power supply switch apparatus includes a voltage decreasing circuit, a rectification circuit, a comparison circuit, and a control circuit. The voltage decreasing circuit receives a first alternating voltage output from a power supply and converts the first alternating voltage to a second alternating voltage. The rectification circuit receives the second alternating voltage and converts the second alternating voltage to a first direct voltage. The voltage regulating circuit receives the first direct voltage and converts the first direct voltage to a second direct voltage. The comparison circuit receives the second direct voltage, compares the second direct voltage with a reference voltage, and outputs a control signal. The control circuit receives the control signal and connects the power supply to different circuits according to the control signal.

Abstract: A cooling system includes a first detection module, a second detection module, a control module connected to the first detection module and the second detection module, and a fan connected to the control module. The first detection module is used to detect a first temperature value and input a first voltage value to the control module according to the first temperature value. The second detection module is used to detect a second temperature value and input a second voltage value to the control module according to the second temperature value. The control device is used to control the fan according to a difference value between the first voltage and the second voltage.

Abstract: A connector assembly includes a first connector, at least one second connector, and a plurality of cables. The first connector includes a plurality of conducting member. A plurality of cables connects the first connector and the at least one second connector. Each of the plurality of cables includes a metal conductor and an insulator. An extending direction of the plurality of cables is substantially perpendicular to a plugging direction of the first connector. Each of the plurality of conduction blades pierces each insulator of the plurality of cables and conducts with the metal conductor of the plurality of cables.

Abstract: An electronic device enclosure includes a cabinet, a door movably mounted to the cabinet, and a limiting block rotatably mounted to the door. The cabinet includes a first side plate. The door defines a limiting slot. The door is movable relative to the cabinet between a closed position and an open position. When the door is located in the closed position, the door is substantially perpendicular to the first side plate and covers the cabinet. When the door is located in the open position, the door is substantially parallel to the first side plate, and the limiting block is engaged in the limiting slot, which prevents the door from dropping.

Abstract: An alternating current phase detecting system includes a first arithmetic circuit, a second arithmetic circuit, and an inverted output module connected to the second arithmetic circuit. The first arithmetic circuit receives any first alternating current signal and the second arithmetic circuit receives a second alternating current signal. The first alternating current signal is converted to a first output signal and is output to the second arithmetic circuit. The second arithmetic circuit outputs a second output signal to the inverted output module which is fed by the second alternating current signal and the first output signal. The inverted output module obtains a phase value difference between the first alternating current signal and the second alternating current signal to establish 120 degree sequentiality between the two, or otherwise, to enable correct electrical connections to be made to a powered device.

Abstract: A dispensing device includes a cabinet, a door, a catching assembly, and a driving assembly. The cabinet includes a plurality of product boxes for receiving products. The door is pivotably mounted to the cabinet. The catching assembly includes a catch portion, a shipping portion, and a connecting portion connected between the catch portion and the shipping portion; and the connecting portion defining a goods channel communicating with the catch portion, the shipping portion, and the receiving opening. The connecting portion is scalable in a vertical direction. The catch portion is slidable relative to the cabinet. The driving assembly is capable of driving the catch portion to slide to a selected product box of the plurality of product boxes to catch a corresponding product.

Abstract: A mounting apparatus includes a bracket, a cage and a cushion. The bracket includes a mounting plate and two limiting plates located on the mounting plate. The cage is secured to the mounting plate and surrounds the two limiting plates. The cage includes a restricting piece. The two limiting plates are adapted to receive a data storage device. A plurality of cushions are interposed between the two limiting plates and the data storage device, in such manner that the data storage device is held captive in the cage but is protected from external jolts or physical shocks.

Abstract: A server enclosure includes an enclosure body, a connecting member, and a loading member. The enclosure body includes a bottom wall and two sidewalls extending from the bottom wall. The two sidewalls is substantially parallel to each other. The connecting member includes a top panel and two resisting panels extending from the top panel. The top panel is substantially parallel to the bottom wall. The loading member includes a bottom panel substantially parallel to the top panel and two connecting panels extending from the bottom panel. A cross section of the loading member, taken along a plane parallel to the sidewall, is U-shaped. The bottom panel is secured on the top panel. The loading member is secured between the two sidewalls.

Abstract: A positioning tool includes an actuating member and a rotating member rotatably attached to the actuating member. The actuating member includes a supporting lump. Two positioning pins are located on the supporting lump. The rotating member includes a rotating plate located between the two positioning pins. Three latching pins are located on the rotating plate.