摘要:
A method for burning MAC address is used to burn a MAC address into a network card in the course of making a network card. The method includes the following steps: Stores a plurality of MAC addresses in a burning platform. The burning platform sends a MAC address to a burning device, and then burns the MAC address to a network card through the burning device. When the burning process finishes, the burning platform reads the contents of the network card, and compares the reading contents to the burning contents. If the result is correct, the burning platform sends the MAC address and a serial number of the network card to a server, and compares them to serial numbers and MAC addresses being stored in the server to prevent the MAC address being reused.
摘要:
A chip burning system includes a burning device (10) with a plurality of burning files stored therein, a transforming circuit (30) for connecting to chips via serial interfaces, a control unit (20) interconnecting the burning device and the transforming circuit via parallel interfaces, and two chips (40,50) for burning. The transforming circuit includes a parallel-to-serial conversion module (301). The control unit includes a terminal (28) configured to output a chip choosing signal to the transforming circuit for choosing one chip from the two chips. The burning device transmits a parallel type burning file to the transforming circuit via the control unit. The transforming circuit transforms the burning file into serial type with the parallel-to-serial conversion module, and the transformed burning file is burned into the chosen chip.
摘要:
A heat dissipation device adapted for cooling a heat-generating electronic component includes a heat sink (30), a fan (40) mounted on the heat sink (30), a fan duct (70) mounted on the fan (40) and a clip (50) securing the fan duct (70) on the fan (40). The fan (40) is sandwiched between a top of the heat sink (30) and a bottom of the fan duct (70). The clip (70) includes an axis (51) pivotably mounted on to a bottom of the fan duct (70), a locking portion (52) extending from an end of the axis (51) and buckled with the fan duct (70), and a pressing portion (53) bent from the axis (51) and engaging with a bottom surface of the top plate (42) of the fan (40).
摘要:
A fastener, for assembling a fan to a bracket, includes a shaft, and an expanding head extending from an end of the shaft. The shaft has a bulge formed at an opposite end thereof. A handle extends from the bulge of the shaft. The handle is used for facilitating an operator to manipulate the fastener to secure the fan and the bracket together. By pulling the handle of the fastener, the shaft of the fastener extends through the fan and the bracket to reach a position where the head and the bulge of the shaft of the fastener tightly sandwich the fan and the bracket therebetween.
摘要:
The present invention provides a method of identifying a human subject having increased or decreased sensitivity to warfarin, comprising detecting in the subject the presence of a single nucleotide polymorphism in the VKOR gene, wherein the single nucleotide polymorphism is correlated with increased or decreased sensitivity to warfarin, thereby identifying the subject having increased or decreased sensitivity to warfarin.
摘要:
Joint erasure marking Viterbi algorithm (JEVA), decoder schemes, methods, and systems are provided which perform robust trellis decoder techniques. The provided JEVA decoding schemes are shown to be maximum likelihood decoding schemes that find the most likely transmitted code sequence with a set of symbol erasures, without knowledge of the impulsive noise probability distribution function, and can be implemented sequentially such that they are well suited for dynamically changing impulsive noise channels. In addition, the disclosed details enable various refinements and modifications according to decoder and system design considerations. For example, truncated JEVA is provided for continuous transmission and long frame applications.
摘要:
A polyvinylidene difluoride copolymer with a fluoroolefin selected from 2,3,3,3-tetrafluoropropene, 1,1,3,3,3-pentafluoropropene, 2-chloro-pentafluoropropene, hexafluoropropylene, trifluoroethylene, chlorotrifluoroethylene, 3,3,3-trifluoro-2-trifluoromethylpropene and a mixture thereof, wherein the stoichiometry of the co-monomers defines the barrier properties of the copolymer. Such polymers include moisture barrier copolymers and oxygen barrier copolymer. Processes for preparing such moisture barrier copolymers and oxygen barrier copolymers are also provided.
摘要:
A differential signal driver includes a pre-driver configured to generate a constant charging current and a constant discharging current. A first capacitor of the pre-driver is charged with the charging current when a differential input signal has a first state, and discharged with the discharging current when the differential input signal has a second state, thereby developing a first output control voltage on the first capacitor. A second capacitor of the pre-driver is discharged with the discharging charging current when the differential input signal has the first state, and charged with the charging current when the differential input signal has the second state, thereby developing a second output control voltage on the second capacitor. An output driver circuit generates a differential output signal in response to the first and second output control voltages. The slew rate of the differential output signal is controlled by the charging and discharging currents.
摘要:
A heat dissipation assembly comprises a mounting seat, a heat sink and a clip for fastening the heat sink in the mounting seat. The mounting seat defines an opening and is provided with a first and second protrusions. The heat sink is accommodated in the opening of the mounting seat. The clip comprises an elongated pressing member for pressing the heat sink and a clamping leg connected to one end of the pressing member and attached to the first protrusion of the mounting seat. An operating member, defining a notch, is pivotably attached to the other end of the pressing member and is rotatable relative to the pressing member and the second protrusion of the mounting seat slides in the notch of the operating member so that the clip switches between a release status and locking status.
摘要:
A heat dissipation device includes a heat sink including a heat conducting portion and a plurality of fins extending from the heat conducting portion. The heat conducting portion has a base portion for contacting a heat generating device, and two wing portions extending from the base portion. The heat sink has two slits extending through two opposite sides thereof. A fan holder having a fan mounted thereon is attached to a face of the heat sink. The fan holder includes two brackets each having a rib engaged in a corresponding slit of the heat sink to thereby attach the fan holder to the heat sink, and a faceplate having the fan thereon. The faceplate has an ear secured to a corresponding wing portion of the heat sink by a screw and a tab extending upwardly beyond a top end of the heat sink.