Abstract: A magnetoresistive random access memory (MRAM) device includes a first array region and a second array region on a substrate, a first magnetic tunneling junction (MTJ) on the first array region, a first top electrode on the first MTJ, a second MTJ on the second array region, and a second top electrode on the second MTJ. Preferably, the first top electrode and the second top electrode include different nitrogen to titanium (N/Ti) ratios.

Abstract: A direct drive electric lawn mower includes a driving device using an outer rotor electric motor formed of a stator, a rotor, a holder base, a bottom cap and a shaft, a cutting device connected to the shaft of the driving device outside the bottom cap and rotatable with the shaft and the bottom cap to cut a lawn at an even height, and an operating device including a tubular handle connected to the driving device, an electrical connector located on one end of the tubular handle remote from the driving device, a grip affixed to the handle and a switch mounted at the tubular handle and electrically connected with the electrical connector and operable to switch on/off the outer rotor electric motor of the driving device.

Abstract: A printed circuit board includes a sending element, a plurality of receiving elements, and a control unit. The sending element is configured to generate a sending signal. The receiving elements are configured to receive a control signal respectively. The control unit is coupled to the sending element through a first wire and to the receiving elements through a plurality of second wires. The control unit is provided with a comparison table that stores related information of the second wires. When receiving the sending signal, the control unit generates the control signals according the related information of the second wires. At least one of the control signals is transmitted to the corresponding receiving element, and the rest of the control signals are delayed for a preset time and then transmitted to the rest of the receiving elements.

Abstract: A printed circuit board (PCB) includes multiple receiving components and a sending component. Each receiving component includes a receiving unit and a first control unit. The receiving unit receives a radio signal. The first control unit is configured with a first comparison table storing related information of the receiving component, and used for decoding the radio signal according to the first comparison table, to obtain a corresponding control signal. The sending component includes a sending unit and a second control unit. The sending unit sends the radio signals. The second control unit is configured with a second comparison table storing the related information of the receiving components. When the sending component outputs the control signals through the second control unit, the second control unit generates the control signals according to the second comparison table, and encodes the control signals to generate the radio signals.

Abstract: A printed circuit board includes multiple receiving components for respectively receiving control signals and a transmitting component coupled to the receiving component through multiple leads. Given that the lengths of the leads may be different to each other, the control unit generates the control signals to the leads according to the information about the leads, and firstly delivers at least one of the control signals to the corresponding receiving component(s), and then delivers the remaining control signals to the receiving components after a predetermined time. Furthermore, a method for controlling a signal sequence for the printed circuit board includes generating multiple control signals depending on the information about leads and delivering at least one of the control signals to the corresponding receiving component and delivering the remaining control signals to the remaining receiving components after the predetermined time.

Abstract: A printed circuit board includes multiple receiving components for respectively receiving control signals and a transmitting component coupled to the receiving component through multiple leads. Given that the lengths of the leads may be different to each other, the control unit generates the control signals to the leads according to the information about the leads, and firstly delivers at least one of the control signals to the corresponding receiving component(s), and then delivers the remaining control signals to the receiving components after a predetermined time. Furthermore, a method for controlling a signal sequence for the printed circuit board includes generating multiple control signals depending on the information about leads and delivering at least one of the control signals to the corresponding receiving component and delivering the remaining control signals to the remaining receiving components after the predetermined time.

Abstract: A printed circuit board includes a sending element, a plurality of receiving elements, and a control unit. The sending element is configured to generate a sending signal. The receiving elements are configured to receive a control signal respectively. The control unit is coupled to the sending element through a first wire and to the receiving elements through a plurality of second wires. The control unit is provided with a comparison table that stores related information of the second wires. When receiving the sending signal, the control unit generates the control signals according the related information of the second wires. At least one of the control signals is transmitted to the corresponding receiving element, and the rest of the control signals are delayed for a preset time and then transmitted to the rest of the receiving elements.

Abstract: A direct drive electric lawn mower includes a driving device using an outer rotor electric motor formed of a stator, a rotor, a holder base, a bottom cap and a shaft, a cutting device connected to the shaft of the driving device outside the bottom cap and rotatable with the shaft and the bottom cap to cut a lawn at an even height, and an operating device including a tubular handle connected to the driving device, an electrical connector located on one end of the tubular handle remote from the driving device, a grip affixed to the handle and a switch mounted at the tubular handle and electrically connected with the electrical connector and operable to switch on/off the outer rotor electric motor of the driving device.