Abstract: A clock signal generating apparatus includes a first frequency generating circuit, a second frequency generating circuit, and an output circuit. The first frequency generating circuit is arranged to generate a first clock signal having a first oscillation frequency. The second frequency generating circuit is arranged to generate a second clock signal having a second oscillation frequency. The output circuit is arranged to receive the first and second clock signals. The output circuit is able to output one of the first and second clock signals as an output clock signal according to an oscillation frequency control setting provided by an external bounding pad included within the clock signal generating apparatus.

Abstract: In a system and method for testing a serial port of a computing device, the serial port electronically connects to a test fixture. Test data is sent to a receive data (RXD) pin by a transmit data (TXD) pin. A test result is received from the serial port by the RXD pin. The TXD pin and the RXD pin work normally if the test data is identical to the test result. When voltages of a request to send (RTS) pin and a data terminal ready (DTR) pin are set at high level, the RTS pin, a data carrier detect (DCD) pin, the DTR pin, a ring indicator (RI) pin, a data send ready (DSR) pin and a clear to send (CTS) pin work normally, upon the condition that status values of the serial port indicate the voltages of the above six pins are at high level.

Abstract: A method controls power of a baseboard management controller (BMC). A power control signal of the BMC is generated for powering up or powering down the BMC. An enabling signal is generated according to the power control signal. A power supply device is directed to output one or more voltages to the BMC.

Abstract: A preboot execution environment (PXE) test device includes a microprocessor, one or more indicators, a network interface, a power connector, and a storage device. The network interface connects the PXE test device with a computer. The power connector connects an external power source to supply a voltage to the PXE test device. The storage device stores a boot loader, an embedded operating system, and one or more programs. The microprocessor executes the boot loader and the embedded operating system to start the PXE test device. The one or more indicators indicate a power supply status and a starting status of the PXE test device. The microprocessor further executes the one or more programs to remotely boot the computer for test PXE of a network card in the computer.

Abstract: A clock signal generating apparatus includes a first frequency generating circuit, a second frequency generating circuit, and an output circuit. The first frequency generating circuit is arranged to generate a first clock signal having a first oscillation frequency. The second frequency generating circuit is arranged to generate a second clock signal having a second oscillation frequency. The output circuit is arranged to receive the first and second clock signals. The output circuit is able to output one of the first and second clock signals as an output clock signal according to an oscillation frequency control setting provided by an external bounding pad included within the clock signal generating apparatus.

Abstract: An electrostatic precipitator cell containing a collection assembly, a plurality of collection assembly ground plates disposed in the collection assembly, a plurality of banks disposed in the collection assembly, wherein each bank containing a collection assembly charge plate and a voltage isolator is described. Electrically isolating portions of an electrostatic precipitator cell results in reduced arcing and overall increases in cleaning efficiency. As air cleaner utilizing the electrostatic precipitator with isolated banks is also described.

Abstract: In a method for testing a preboot execution environment (PXE) function of a NIC of a server, an IP address is allocated for the NIC by sending a DHCP offer message to the NIC in response to receiving a DHCP discover message from the NIC. TFTP parameters are provided to the NIC by sending a DHCP ACK message to the NIC in response to receiving a DHCP request message from the NIC. A connection based on a MTFTP or a TFTP between the BMC and the NIC is established according to the TFTP parameters. A PXE image file is provided to the NIC for downloading through the connection in response to receiving a request for downloading the PXE image file from the NIC, and the downloaded PXE image file is executed to test whether the PXE function of the NIC is normal.

Abstract: A preboot execution environment (PXE) test device includes a microprocessor, one or more indicators, a network interface, a power connector, and a storage device. The network interface connects the PXE test device with a computer. The power connector connects an external power source to supply a voltage to the PXE test device. The storage device stores a boot loader, an embedded operating system, and one or more programs. The microprocessor executes the boot loader and the embedded operating system to start the PXE test device. The one or more indicators indicate a power supply status and a starting status of the PXE test device. The microprocessor further executes the one or more programs to remotely boot the computer for test PXE of a network card in the computer.

Abstract: In a system and method for testing a serial port of a computing device, the serial port electronically connects to a test fixture. Test data is sent to a receive data (RXD) pin by a transmit data (TXD) pin. A test result is received from the serial port by the RXD pin. The TXD pin and the RXD pin work normally if the test data is identical to the test result. When voltages of a request to send (RTS) pin and a data terminal ready (DTR) pin are set at high level, the RTS pin, a data carrier detect (DCD) pin, the DTR pin, a ring indicator (RI) pin, a data send ready (DSR) pin and a clear to send (CTS) pin work normally, upon the condition that status values of the serial port indicate the voltages of the above six pins are at high level.

Abstract: A method controls power of a baseboard management controller (BMC). A power control signal of the BMC is generated for powering up or powering down the BMC. An enabling signal is generated according to the power control signal. A power supply device is directed to output one or more voltages to the BMC.

Abstract: A method for assembling a liquid crystal display includes steps of disposing a liquid crystal panel and a backlight module and blowing an ionic flow into the space between the liquid crystal panel and the backlight module to clean the surfaces of them. In addition, the method can be proceeded by an apparatus for assembling the liquid crystal display. The apparatus comprises a fastening device, a hoist platform, and an ionic particle-removal device. The fastening device has several vacuum suckers used to attach the surface of a liquid crystal panel and the panel is held and fixed. The hoist platform is disposed vertically under the fastening device to carry a backlight module and thus to adjust the distance between the liquid crystal panel and the backlight module.

Abstract: A method for assembling a liquid crystal display includes steps of disposing a liquid crystal panel and a backlight module and blowing an ionic flow into the space between the liquid crystal panel and the backlight module to clean the surfaces of them. In addition, the method can be proceeded by an apparatus for assembling the liquid crystal display. The apparatus comprises a fastening device, a hoist platform, and an ionic particle-removal device. The fastening device has several vacuum suckers used to attach the surface of a liquid crystal panel and the panel is held and fixed. The hoist platform is disposed vertically under the fastening device to carry a backlight module and thus to adjust the distance between the liquid crystal panel and the backlight module.

Abstract: A method for assembling a liquid crystal display includes steps of disposing a liquid crystal panel and a backlight module and blowing an ionic flow into the space between the liquid crystal panel and the backlight module to clean the surfaces of them. In addition, the method can be proceeded by an apparatus for assembling the liquid crystal display. The apparatus comprises a fastening device, a hoist platform, and an ionic particle-removal device. The fastening device has several vacuum suckers used to attach the surface of a liquid crystal panel and the panel is held and fixed. The hoist platform is disposed vertically under the fastening device to carry a backlight module and thus to adjust the distance between the liquid crystal panel and the backlight module.