Abstract: A fixing device for securing a circuit board to a plate member includes a spacer, a nut member, and a fastener. A coupling hole is defined through the spacer. A female thread is formed on a part of an interior surface of the coupling hole at an end thereof. A nut member comprises a pressing portion and a coupling portion extending from the pressing portion. A male thread is formed on a part of an exterior surface of the coupling portion at a free end thereof, corresponding to the female thread of the coupling hole of the spacer such that the coupling portion is capable of being movably retained in the coupling hole. A threaded hole is defined in the nut member. A fastener includes a head and a threaded rod extending from the head for being screwed in the threaded hole of the nut member.

Abstract: An elastic grounding clip, set between a PCB and a housing of an electronic device, includes two first main pieces, a first connection piece connected between the two first main pieces, a second main piece adjacent one of the first main pieces, and a second connection piece connected between the one of the first main pieces and the second main piece. The two first main pieces and the first connection piece bound a first clamping part configured for clamping the PCB, and the corresponding first main piece, the second connection piece, and the second main piece bound a second clamping part configured for clamping a protruding portion of the housing of the electronic device.

Abstract: An airflow detection apparatus includes an enclosure defining a through hole therein, a conductive pole received in the through hole of the enclosure, a first conductive board electrically connected to a first end of the conductive pole and an electrode of a power source, and a second conductive board electrically connected to the other electrode of the power source. The first and second conductive boards are respectively attached to a top end and a bottom plate of the enclosure. The second conductive board defines a through hole therein to make an end of the conductive pole to pass therethrough, and a diameter of the through hole of the second conductive board is greater than that of the conductive pole. When the conductive pole is driven by an airflow, it will swing to contact with a side bounding the through hole of the second conductive board.

Abstract: An elastic grounding clip, set between a PCB and a housing of an electronic device, includes two first main pieces, a first connection piece connected between the two first main pieces, a second main piece adjacent one of the first main pieces, and a second connection piece connected between the one of the first main pieces and the second main piece. The two first main pieces and the first connection piece bound a first clamping part configured for clamping the PCB, and the corresponding first main piece, the second connection piece, and the second main piece bound a second clamping part configured for clamping a protruding portion of the housing of the electronic device.

Abstract: A wireless mouse includes a main body, a cover disposed above the main body, a circuit board mounted in the main body, a power switch disposed on the circuit board configured for controlling power supply from a power source to the circuit board, and a trigger mounted on the cover and movable relative to the cover. When a user depresses the cover, the trigger actuates the power switch to allow the power source providing power to the wireless mouse; when the user releases the cover, the trigger releases the power switch to interrupt power to the wireless mouse.

Abstract: A fixing device for securing a circuit board to a plate member includes a spacer, a nut member, and a fastener. A coupling hole is defined through the spacer. A female thread is formed on a part of an interior surface of the coupling hole at an end thereof. A nut member comprises a pressing portion and a coupling portion extending from the pressing portion. A male thread is formed on a part of an exterior surface of the coupling portion at a free end thereof, corresponding to the female thread of the coupling hole of the spacer such that the coupling portion is capable of being movably retained in the coupling hole. A threaded hole is defined in the nut member. A fastener includes a head and a threaded rod extending from the head for being screwed in the threaded hole of the nut member.

Abstract: A computer enclosure of an embodiment of the present invention includes a chassis (30) and a hood (20). The chassis includes two side walls (32) and a front wall (34). The side walls each define a number of receiving holes (38) to slidably receive pins (28) of the hood. The front wall defines a number of V-shaped notches (33). The hood forms a number of retaining posts (24) corresponding to the notches of the chassis. Each retaining post defines a slanted side face. When the hood is pushed horizontally, the retaining posts and the notches cooperate to drive the hood downwardly so that the hood tightly abuts against the chassis.

Abstract: One embodiment provides a system to assist setting a state of a latch system. The system includes a latch system connected to a node, the latch system residing in one of a first state and a second state. A charge storage device is coupled to maintain the node at a first voltage according to an amount of stored charge. A write assist system is connected between the node and a second voltage. The write assist network is configured, when the node is selected, to discharge the charge storage device and to pull the node from the first voltage to a discharge voltage that is outside a range defined by the first voltage and the second voltage to facilitate setting the latch system to another of the first state and the second state.

Abstract: A system for hyper-chaos secure communication, for conveying data confidentially from a transmitter to a receiver, includes: (1) a hyper-chaotic signal generator, for carrying a message into a first signal of the hyper-chaotic signal generator; (2) a transmitter's adjusting parameter device, for adjusting a first inner coupling parameter of the hyper-chaotic signal generator, causing the hyper-chaotic signal generator transforming the message and the first signal into a hyper-chaotic message; (3) a hyper-chaotic synchronization receiver, for adjusting a second inner coupling parameter of the hyper-chaotic synchronization receiver via a receiver's adjusting parameter device, causing the hyper-chaotic synchronization receiver generating a second signal to realize simplex-coupling asymptotical synchronization with the first signal after the receiver receiving the hyper-chaotic message; and (4) a recovery device, for obtaining a difference between the hyper-chaotic message and the second signal, inputting the dif

Abstract: A robust hyper-chaotic encryption-decryption system, for digital secure-communication from a transmitter to a receiver, utilizing two robust hyper-chaotic means in the transmitter and receiver respectively, wherein the transmitter includes a hyper-chaotic signal generator and a transmitter's adjusting parameter device, and the receiver includes a hyper-chaotic synchronization receiver and a receiver's adjusting parameter device. A method is also disclosed, comprising an encryption and a decryption process wherein the encryption process including steps of decomposing a plaintext message into a sequence and carrying the sequence into a masking sequence of a hyper-chaotic signal via an XOR operation for generating a hyper-chaotic ciphertext, and the decryption process including steps of generating unmasking sequence of a hyper-chaotic signal to realize synchronization with the masking sequence after receiving the ciphertext and transforming the ciphertext into a decrypted plaintext massage via an XOR operation.

Abstract: A computer component mounting apparatus includes a bracket assembly (200) secured in a computer chassis (10), and a top panel (30) attached to the bracket assembly. The bracket assembly includes a first bracket for receiving fans (50) therein. The first bracket includes a pair of side panels (21), and a number of spaced beams (25) connecting top extremities of the side panels. A pair of retaining tabs (26) depends from opposite side edges of each beam. A number of supporting tabs (24) are formed from inner surface of the side panels in the bottom. The fans are disposed in the first bracket, held by the supporting tabs and the retaining tabs. The top panel is covered on the top of the bracket assembly by fasteners to hold fans in the computer chassis.

Abstract: A computer enclosure of an embodiment of the present invention includes a chassis (30) and a hood (20). The chassis includes two side walls (32) and a front wall (34). The side walls each define a number of receiving holes (38) to slidably receive pins (28) of the hood. The front wall defines a number of V-shaped notches (33). The hood forms a number of retaining posts (24) corresponding to the notches of the chassis. Each retaining post defines a slanted side face. When the hood is pushed horizontally, the retaining posts and the notches cooperate to drive the hood downwardly so that the hood tightly abuts against the chassis.

Abstract: A computer component mounting apparatus includes a bracket assembly (200) secured in a computer chassis (10), and a top panel (30) attached to the bracket assembly. The bracket assembly includes a first bracket for receiving fans (50) therein. The first bracket includes a pair of side panels (21), and a number of spaced beams (25) connecting top extremities of the side panels. A pair of retaining tabs (26) depends from opposite side edges of each beam. A number of supporting tabs (24) are formed from inner surface of the side panels in the bottom. The fans are disposed in the first bracket, held by the supporting tabs and the retaining tabs. The top panel is covered on the top of the bracket assembly by fasteners to hold fans in the computer chassis.

Abstract: A sense amplifier that is capable of sensing small differential voltage between two inputs with full voltage range includes a first inverter 305 and 306; a second inverter 307 and 308 cross coupled with the first inverter; a first transmission gate 301 coupled between a reference node REF and an input of the first inverter; a second transmission gate 302 coupled between a data node RD and an input of the second inverter; a pull-up enable switch 303 coupled between a high side voltage source node VDD, and the first and second inverters; and a pull-down enable switch 304 coupled between a low side voltage source node, and the first and second inverters.

Abstract: A sense amplifier that is capable of sensing small differential voltage between two inputs with full voltage range includes a first inverter 305 and 306; a second inverter 307 and 308 cross coupled with the first inverter; a first transmission gate 301 coupled between a reference node REF and an input of the first inverter; a second transmission gate 302 coupled between a data node RD and an input of the second inverter; a pull-up enable switch 303 coupled between a high side voltage source node VDD, and the first and second inverters; and a pull-down enable switch 304 coupled between a low side voltage source node, and the first and second inverters.

Abstract: An integrated circuit (IC). The integrated circuit comprises an array (14) of data cells arranged in a plurality of rows and a plurality of columns. Each of the data cells comprises an electrically programmable fuse (40), and each electrically programmable fuse comprises a current path for providing a first digital state when the current path is left intact and for providing a second digital state when the current path is destroyed. Each row of the plurality of rows comprises at least one cell reserved for providing a protection indicator for the row, wherein the protection indicator is selected from a set consisting of read protection and write protection. The integrated circuit also comprises control circuitry (12) for selectively destroying the programmable fuse in selected ones of the data cells in a programmation mode. The integrated circuit also comprises control circuitry (12) for reading selected ones of the data cells in a read mode.