Abstract: A medical dental grinding apparatus comprises an apparatus body, wherein an air pipeline, a clamping mechanism, and a grinding mechanism are provided in the apparatus body; the air pipeline includes an air inlet pipeline, an air outlet pipeline, and a U-shaped connection pipeline; a silencer is connected to an upper port of the air outlet pipeline; a plane where the air pipeline is located is perpendicular to a plane where the clamping mechanism is located, and the grinding mechanism is provided below the air pipeline; the grinding mechanism is driven by high-pressure air in the air pipeline to operate, so that a hidden danger of electric leakage caused by using an electric apparatus in a fragile oral environment is avoided; and a steel wire is fixed by the clamping mechanism, so that the grinding safety is ensured.

Abstract: A latchup immune microcontroller system with a power supply and a filter designed to eliminate external risks of triggering a latchup of a microcontroller caused by the power supply; a clock circuit with a clock frequency and a layout for eliminating external risks of triggering a latchup of the microcontroller caused by a high-frequency clock signal; a reset circuit that uses an optical triggering mechanism acting as a common power supply and an isolated power supply, the power detection circuit and a discharge circuit react in chain in time, avoid risks of triggering latchups of the microcontroller caused by reset signals; an interrupt with a high priority level and the discharge circuit react in chain in time to enhance data security, and output terminals are turned off in sequence to remove external causes of latchup. An application method of an I/O port to eliminate triggers of latchup of the microcontroller.

Abstract: A latchup immune microcontroller system with a power supply and a filter designed to eliminate external risks of triggering a latchup of a microcontroller caused by the power supply; a clock circuit with a clock frequency and a layout for eliminating external risks of triggering a latchup of the microcontroller caused by a high-frequency clock signal; a reset circuit that uses an optical triggering mechanism acting as a common power supply and an isolated power supply, the power detection circuit and a discharge circuit react in chain in time, avoid risks of triggering latchups of the microcontroller caused by reset signals; an interrupt with a high priority level and the discharge circuit react in chain in time to enhance data security, and output terminals are turned off in sequence to remove external causes of latchup. An application method of an I/O port to eliminate triggers of latchup of the microcontroller.

Abstract: An atomizing nozzle including a nozzle body, a flow orifice plate, a multi-stage decompression sleeve and a dual-conical surface nozzle head. One end of the nozzle body opposite to the dual-conical surface nozzle head is provided with an external thread; one end of the nozzle body close to the dual-conical surface nozzle head is provided with an internal hole and an internal thread. The external thread of the nozzle body is connected to external equipment. The flow orifice plate, the multi-stage decompression sleeve and the dual-conical surface nozzle head are arranged in the internal hole. The flow orifice plate is arranged on one end of the dual-conical surface nozzle close to the external thread of the nozzle body. The multi-stage decompression sleeve is arranged on the flow orifice plate.