Abstract: Disclosed are a multi-mode virtual serial port chip, an implementation method, and a firmware downloading system and method thereof. The multi-mode virtual serial port chip comprises a normal operating mode and an enhanced operating mode, which are selected by a multiplexed auxiliary signal pin according to that whether there is a pull-down resistor connected thereto. The normal operating mode is compatible with the prior art and applications, and one-click automatic MCU firmware downloading can also be realized in the enhanced operating mode. In the present invention, no peripheral circuit is needed, the MCU also cannot unintentionally enter other modes, and the effects of automatically downloading firmware, improving downloading efficiency, reducing costs, reducing power consumption and decreasing product volume are achieved.

Abstract: Disclosed are a multi-mode virtual serial port chip, an implementation method, and a firmware downloading system and method thereof. The multi-mode virtual serial port chip comprises a normal operating mode and an enhanced operating mode, which are selected by a multiplexed auxiliary signal pin according to that whether there is a pull-down resistor connected thereto. The normal operating mode is compatible with the prior art and applications, and one-click automatic MCU firmware downloading can also be realized in the enhanced operating mode. In the present invention, no peripheral circuit is needed, the MCU also cannot unintentionally enter other modes, and the effects of automatically downloading firmware, improving downloading efficiency, reducing costs, reducing power consumption and decreasing product volume are achieved.

Abstract: A waterway switching structure for a multifunctional shower head includes a water diversion seat, a water outlet body, a switching assembly, and a driving assembly. The driving assembly includes a rotating shaft, a driving wheel, a master wheel, and a slave wheel. The driving wheel is rotatably connected to the rotating shaft, the master wheel and the slave wheel are linked to the rotating shaft. A first end of the driving wheel is movably provided with a driving detent which fits into the notch of the master wheel, the slave wheel is provided with water inlet holes. The switching assembly is rotatably connected to the driving wheel. A second end of the driving wheel is connected to a resetting member to move the driving wheel backward. The slave wheel is driven to enable the water inlet holes selectively switch on the water diversion holes communicating with the respective waterway.

Abstract: Disclosed is a preparation method of a plant biomass-based active tanning agent. Under a low-temperature reaction condition, cyanuric chloride and a plant biomass compound are used to synthesize an environment-friendly plant biomass-based active tanning agent through a nucleophilic substitution reaction. The active tanning agent obtained in the present disclosure appears as a white or light brown emulsion at room temperature, and has substantial active groups such as hydroxyl groups, carboxyl groups and ester groups introduced into its structure, thus endowing leathers with desirable hydrothermal stability and physical properties and having a desirable synergistic effect with metal tanning agents. Meanwhile, health and environment risks caused by hexavalent chromium and free formaldehyde in leathers are avoided.

Abstract: The present disclosure provides a switching device for shower system and a shower system including same. The switching device for shower system includes a shell main body, a valve, a handle kit, and a sealing cover. The shell main body is internally provided with a partition, the partition is provided with a plurality of water passing holes, and a side of the partition is provided with a plurality of water chambers. The valve is located inside the shell main body, and a first end of the valve abuts on a side of the partition and communicates with the water passing holes. The handle kit is connected to a second end of the valve. The sealing cover is configured to block the water chambers at an outer end.

Abstract: An anti-fuse memory cell and a data read-write circuit thereof. The anti-fuse memory cell comprises a base, the base is provided with an N-well and a non-N-well region; the non-N-well region is provided with a first NMOS transistor; a gate of the first NMOS transistor is used for inputting a first selection signal; the N-well is provided with a PMOS transistor and a varactor; a gate of the PMOS transistor and a gate of the varactor are both connected to a drain of the first NMOS transistor; and a drain, a source and a substrate of the PMOS transistor and a drain, a source, and a substrate of the varactor are all connected to a controllable power supply.

Abstract: A light bulb apparatus includes a glass housing, a sleeve housing, a light source plate, a sleeve connector wrapping and an Edison cap. The glass housing defines a tubular part and a trumpet part. The sleeve housing includes a neck part and a protruding part. The neck part is enclosed by the tubular part of the glass housing. The protruding part is exposed outside tubular part. The light source plate is fixed to the sleeve housing. The sleeve connector wraps an exterior surface of the protruding part. The Edison cap is attached to the sleeve connector.

Abstract: The present invention provides a shower assembly with an adjustable water delivery angle, including: an inlet water pipe, having an inlet water channel and a first water outlet and a second water outlet, both of which are in communication with the inlet water channel; a top spray support arm, rotatably mounted on the inlet water pipe; a movable piece, movably disposed on the inlet water pipe and connecting the top spray support arm to the inlet water pipe in a limiting manner, wherein when the movable piece moves to a first position, the top spray support arm rotates around the inlet water pipe; when the movable piece moves to a second position, the top spray support arm is limited along a circumference of the inlet water pipe, wherein the movable piece is provided with a first magnetic attraction element.

Abstract: The present disclosure provides a tube support assembly capable of arbitrary adjustment, which includes a valve seat assembly. The valve seat assembly has a water inlet and at least two water outlets, the water outlets are respectively connected to a water outlet component, and the valve seat assembly is switchable to selectively connect the water inlet with any of the water outlet component; one of the water outlets is provided with a steering structure, and the steering structure enables the water outlet component connected to the steering structure to be adjusted at any angle and/or in any direction. Such humanized design can meet the shower requirements of most people with a simple and ingenious structure and good operability.

Abstract: An anti-fuse memory cell and a data read-write circuit thereof. The anti-fuse memory cell comprises a base, the base is provided with an N-well and a non-N-well region; the non-N-well region is provided with a first NMOS transistor; a gate of the first NMOS transistor is used for inputting a first selection signal; the N-well is provided with a PMOS transistor and a varactor; a gate of the PMOS transistor and a gate of the varactor are both connected to a drain of the first NMOS transistor; and a drain, a source and a substrate of the PMOS transistor and a drain, a source, and a substrate of the varactor are all connected to a controllable power supply.

Abstract: A light bulb apparatus includes a glass housing, a sleeve housing, a light source plate, a sleeve connector wrapping and an Edison cap. The glass housing defines a tubular part and a trumpet part. The sleeve housing includes a neck part and a protruding part. The neck part is enclosed by the tubular part of the glass housing. The protruding part is exposed outside tubular part. The light source plate is fixed to the sleeve housing. The sleeve connector wraps an exterior surface of the protruding part. The Edison cap is attached to the sleeve connector.

Abstract: A basin faucet with filter includes a faucet tube base, a faucet cover, and a filtering device. The faucet tube base is provided with a water outlet channel and a switch mechanism for controlling conduction state of the water outlet channel. The faucet cover is detachably arranged on the faucet tube base, a side of the faucet cover is provided with an annular engaging groove, and a center surrounding by the annular engaging groove forms a water passing hole. The filtering device is detachably arranged on the faucet cover and is located between the switch mechanism and the water outlet channel. The filtering device includes a tubular filter core and a sealing member matching with an open end of the tubular filter core. Two ends of the tubular filter core are respectively fixed with the annular engaging groove and the sealing member.

Abstract: The present disclosure relates to the field of bathroom products and in particular to a shower head with rotary jet water, including a shower head body, where the shower head body is provided with a water distribution mechanism and a plurality of first water outlet holes, and the water distribution mechanism is used to control a water delivery state of the first water outlet hole; a water partition disk and a plurality of rotary mechanisms are fixedly disposed in the shower head body, a plurality of pressurizing mechanisms are disposed on the water partition disk, the pressurizing mechanism includes a plurality of water guide holes annularly arranged, a flow guide surface inclined toward the first water outlet hole is disposed inside the water guide hole, and the inclination direction of the flow guide surfaces of each pressurizing mechanism is co-directionally disposed in a circumferential direction.

Abstract: The present invention provides a shower assembly with an adjustable water delivery angle, including: an inlet water pipe, having an inlet water channel and a first water outlet and a second water outlet, both of which are in communication with the inlet water channel; a top spray support arm, rotatably mounted on the inlet water pipe; a movable piece, movably disposed on the inlet water pipe and connecting the top spray support arm to the inlet water pipe in a limiting manner, wherein when the movable piece moves to a first position, the top spray support arm rotates around the inlet water pipe; when the movable piece moves to a second position, the top spray support arm is limited along a circumference of the inlet water pipe, wherein the movable piece is provided with a first magnetic attraction element.

Abstract: A flexible printed circuit and manufacturing method thereof, and a displaying device. A wiring layer is arranged on a flexible substrate, a reinforcing layer is arranged on a side of the flexible substrate away from the wiring layer, the wiring layer comprises a plurality of signal wirings arranged along a first wiring area, a second wiring area, a third wiring area and a fourth wiring area, and the reinforcing layer comprises a first reinforcing structure located in the second wiring area and a second reinforcing structure located in the fourth wiring area. The impact strength of the flexible printed circuit is increased by arranging the first reinforcing structure in the second wiring area of the flexible substrate and arranging the second reinforcing structure in the fourth wiring area of the flexible substrate.

Abstract: The present disclosure provides a rotary sheet-shaped water structure, including a shell assembly and a gear assembly disposed inside the shell assembly. The shell assembly includes a water inlet and a water outlet. Water flows through the gear assembly through the water inlet and is sprayed out of the water outlet. The water inlet has a plurality of oblique surfaces and the water outlet has a water delivery nozzle having a long conical section. In this case, water enters obliquely to impact the gear assembly and flows toward the water delivery nozzle of long conical section at a lower speed, so as to ensure the water sprays can flow out in the form of rotary sheet-shaped structures. The rotary sheet-shaped water structure features less parts, simple structure, easy assembling, stable water delivery, beautiful water sprays and impact comfort.