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 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 transmission system and method may be provided. The transmission system may transmit 2-bit data for each transmission line set and each transmission line set may include first, second and/or third transmission lines arranged in order. The first, second and/or third transmission lines may respectively transmit first, second and/or third signals each having one of first, second and/or third values such that a combination of a first electric field between the first and second transmission lines and a second electric field between the second and third transmission lines may be made depending on a logic state of the 2-bit data. The transmission system may transmit differential signals using a smaller number of transmission lines and the transmission system may transmit a larger number of signals in the same circuit area.
摘要:
A signal transmission circuit and method thereof are provided. The signal transmission circuit may include a plurality of signal transmission lines, each of the plurality of signal transmission lines configured to transfer data via signal currents and a reference transmission plane configured to transfer return currents corresponding to the signal currents, the reference transmission plane separated from each of the plurality of signal transmission lines by an insulating layer, the reference transmission plane including at least one separation slot.
摘要:
A signal transmission circuit and method thereof are provided. The signal transmission circuit may include a plurality of signal transmission lines, each of the plurality of signal transmission lines configured to transfer data via signal currents and a reference transmission plane configured to transfer return currents corresponding to the signal currents, the reference transmission plane separated from each of the plurality of signal transmission lines by an insulating layer, the reference transmission plane including at least one separation slot.
摘要:
A transmission system and method may be provided. The transmission system may transmit 2-bit data for each transmission line set and each transmission line set may include first, second and/or third transmission lines arranged in order. The first, second and/or third transmission lines may respectively transmit first, second and/or third signals each having one of first, second and/or third values such that a combination of a first electric field between the first and second transmission lines and a second electric field between the second and third transmission lines may be made depending on a logic state of the 2-bit data. The transmission system may transmit differential signals using a smaller number of transmission lines and the transmission system may transmit a larger number of signals in the same circuit area.
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.
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:
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:
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.