摘要:
Provided is a case for a portable electronic device. The case includes an outer part; an inner part coupled to an inner surface of the outer part and including a plurality of holes; and fastening members, each including a main body having an outer diameter corresponding to an inner diameter of the hole in the inner part and a flange portion, wherein the flange portion is connected to an end portion of the main body, has an outer diameter greater than the outer diameter of the main body to be depressed into the inner part.
摘要:
Provided is a case for a portable electronic device. The case includes an outer part; an inner part coupled to an inner surface of the outer part and including a plurality of holes; and fastening members, each including a main body having an outer diameter corresponding to an inner diameter of the hole in the inner part and a flange portion, wherein the flange portion is connected to an end portion of the main body, has an outer diameter greater than the outer diameter of the main body to be depressed into the inner part.
摘要:
A semiconductor memory device, a semiconductor memory module, and a semiconductor memory system including the same, the semiconductor memory device including a command/address input buffer that receives a command/address signal and a command/address reference voltage signal, wherein the command/address input buffer is configured to amplify a difference between the command/address signal and the command/address reference voltage signal, and is further configured to output the amplified difference between the command/address signal and the command/address reference voltage signal, and a chip selection input buffer that receives a chip selection signal and a chip selection reference voltage signal, wherein the chip selection input buffer is configured to amplify a difference between the chip selection signal and the chip selection reference voltage signal, and is further configured to output the amplified difference between the chip selection signal and the chip selection reference voltage signal, wherein a voltage level of the command/address reference voltage signal is different from a voltage level of the chip selection reference voltage signal.
摘要:
Disclosed is an automatic purification apparatus for isolating target substances from multiple biological samples, and more particularly to an automatic biological sample purification apparatus equipped with a magnetic field applying part, in which the magnetic field applying part for purifying biological samples and a heating part are integrally formed with each other so as to be movable up and down.Further, disclosed is a method of extracting a target substance from the biological sample using the automatic biological sample purification apparatus equipped with the magnetic field applying part.
摘要:
A memory system is disclosed with first, second, and third connectors located on a system board, the third connector including pins connected to the pins of the first and second connectors through channels, and a memory controller connected to the pins of the third connector through channels. The memory system, as configured in a first memory capacity, comprises; dummy memory modules and a first memory module connected to the memory controller by installing the dummy memory modules in the first and second connectors and installing the first memory module in the third connector. The memory system, as alternately configured in a second memory capacity larger than the first memory capacity, comprises second memory modules connected to the memory controller by installing the second memory modules in only the first and second connectors.
摘要:
A spread spectrum clock generator includes a plurality of delay cells, wherein each delay cell includes at least one delayer receiving an external clock signal and causing a predetermined propagation delay to the received clock signal, and a controller transmitting a control signal to the delayer to control the propagation delay of the delayer according to a state value of the control signal. With this configuration, the spread spectrum clock generator using a delayer can have a simple circuit configuration and effectively attenuate an EMI.
摘要:
A semiconductor memory device, a semiconductor memory module, and a semiconductor memory system including the same, the semiconductor memory device including a command/address input buffer that receives a command/address signal and a command/address reference voltage signal, wherein the command/address input buffer is configured to amplify a difference between the command/address signal and the command/address reference voltage signal, and is further configured to output the amplified difference between the command/address signal and the command/address reference voltage signal, and a chip selection input buffer that receives a chip selection signal and a chip selection reference voltage signal, wherein the chip selection input buffer is configured to amplify a difference between the chip selection signal and the chip selection reference voltage signal, and is further configured to output the amplified difference between the chip selection signal and the chip selection reference voltage signal, wherein a voltage level of the command/address reference voltage signal is different from a voltage level of the chip selection reference voltage signal.
摘要:
A memory system is disclosed with first, second, and third connectors located on a system board, the third connector including pins connected to the pins of the first and second connectors through channels, and a memory controller connected to the pins of the third connector through channels. The memory system, as configured in a first memory capacity, comprises; dummy memory modules and a first memory module connected to the memory controller by installing the dummy memory modules in the first and second connectors and installing the first memory module in the third connector. The memory system, as alternately configured in a second memory capacity larger than the first memory capacity, comprises second memory modules connected to the memory controller by installing the second memory modules in only the first and second connectors.
摘要:
The present invention relates to a novel diaryl 1,2,4-triazole derivative of the following formula 1 as a highly selective cyclooxygenase-2 inhibitor: Wherein, R1, R2, R3, R4, R5, W and A is as defined in this specification.
摘要翻译:本发明涉及作为高选择性环加氧酶-2抑制剂的新型的下式1的二芳基-1,2,4-三唑衍生物:其中R 1,R 2, R 3,R 4,R 5,W和A如本说明书中所定义。
摘要:
A probe card to connect a semiconductor device to test equipment includes a Printed Circuit Board (PCB) in which an electrical wiring pattern is formed, a first connector fixed on an upper surface of the PCB to connect the test equipment to the PCB, probe needles connected to electrode pads of the semiconductor device, and a Flexible PCB (FPCB) to connect the PCB to the probe needles. Accordingly, a signal transmission characteristic can be enhanced, test expenses can be reduced, and ground noise can be reduced.