CN219016998U

CN219016998U - USB flash disk capable of circularly lighting LED lamp

Info

Publication number: CN219016998U
Application number: CN202222439590.0U
Authority: CN
Inventors: 庄曦林
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-05-12
Anticipated expiration: 2032-09-15

Abstract

The application discloses USB flash disk of LED lamp can be lighted in circulation relates to USB flash disk technical field, including USB flash disk, clock generation circuit and digital circuit, the interface of USB flash disk is 5V direct current power supply, and can light the LED lamp in turn according to the time sequence, the USB flash disk comprises main control chip, memory chip, pilot lamp and crystal oscillator, clock generation circuit comprises operational amplifier, resistance and electric capacity, and the resistance effect of wherein is pull-up resistance to prevent that the output current of chip pin is too little and be insufficient to drive LED and lighten, clock generation circuit is provided with zener diode, and operational amplifier adopts single power, and the input part of operational amplifier fortune amp adopts VDD/2, and only 0, 1 clock signal of two kinds of states, digital circuit comprises shift register chip and LED lamp, and digital circuit uses 8 bit D trigger chips to constitute time sequence logic circuit, and the initial input of digital circuit is high level, and the state of every trigger is 0 under the initial state.

Description

USB flash disk capable of circularly lighting LED lamp

Technical Field

The application belongs to the technical field of USB flash discs, and particularly relates to a USB flash disc capable of circularly lighting an LED lamp.

Background

USB flash drive, english name "USB flash disk". The USB interface is used as a miniature high-capacity mobile storage product without a physical driver, and is connected with a computer through the USB interface to realize plug and play. The name of the U disk is first from a novel storage device produced by Langerhans technology, namely a U disk, and the U disk is connected by using a USB interface. After the USB flash disk is connected to the USB interface of the computer, the data of the USB flash disk can be exchanged with the computer. The devices of similar technology produced later cannot be called "U disk" anymore because of the patent registration by Langerhans, and are modified to be "U disk" of harmonic sound. In the following, the term "usb disk" is widely known for its simplicity and ease of recording, and is one of the mobile storage devices.

Some U discs are provided with LED lamps, but the circuit structure of the U disc is complex, the driving capability is low, and a plurality of pull-up resistors are needed. Therefore, the structure of the USB flash disk and the LED lamp needs to be improved, and the USB flash disk capable of circularly lighting the LED lamp is provided, so that the problems are solved better.

Disclosure of Invention

The purpose of the present application is: in order to solve the above-mentioned problem, a USB flash disk capable of circularly lighting an LED lamp is provided.

The technical scheme adopted by the application is as follows:

the utility model provides a but LED lamp's USB flash disk is lighted in circulation, includes USB flash disk, clock generation circuit and digital circuit, the USB flash disk comprises main control chip, memory chip, pilot lamp and crystal oscillator, clock generation circuit comprises operational amplifier, resistance and electric capacity, digital circuit comprises shift register chip and LED lamp.

In a preferred embodiment, the USB interface of the USB flash disk is powered by 5V dc, and the LED lamps can be turned on in turn according to the time sequence.

In a preferred embodiment, the clock generation circuit is provided with a zener diode and the operational amplifier employs a single power supply.

In a preferred embodiment, the input portion of the op-amp employs VDD/2 and only clock signals in both states 0 and 1.

In a preferred embodiment, the digital circuit is configured as sequential logic circuits with 8-bit D flip-flop chips, with the output of each D flip-flop being connected to the next D flip-flop.

In a preferred embodiment, the digital circuit has an initial input of high level and the state of each flip-flop in the initial state is 0.

By adopting the technical scheme, when the rising edge of the clock signal exists, the D trigger carries out the setting, the logic of the output end is changed from 0 to 1, and the LED connected with the D trigger is lighted.

In summary, due to the adoption of the technical scheme, the beneficial effects of the application are as follows:

1. in the application, the D trigger is changed into a shift register chip, so that wiring can be greatly simplified; the chip with strong driving capability is selected, so that a plurality of pull-up resistors can be omitted.

2. In this application, when there is a rising edge of a clock signal, the D flip-flop counts, the output logic changes from 0 to 1, and the LED connected thereto is turned on.

Drawings

FIG. 1 is a diagram of a clock generation circuit of the present application;

fig. 2 is a digital circuit diagram of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

A detailed description of a usb flash disk capable of circularly lighting an LED lamp according to an embodiment of the present application will be provided below with reference to fig. 1-2.

The application discloses a USB flash disk that circulated light LED lamp. Referring to fig. 1-2, the device comprises a USB disk, a clock generation circuit and a digital circuit, wherein a USB interface of the USB disk is 5V dc power supply, and can alternately light up LED lamps according to time sequence, and the USB disk is composed of a main control chip, a memory chip, an indicator light and a crystal oscillator.

Referring to fig. 1, the clock generating circuit is composed of an operational amplifier, a resistor and a capacitor, wherein the resistor acts as a pull-up resistor to prevent the output current of a chip pin from being too small to drive the LED to light up, the driving capability is increased, the clock generating circuit is provided with a zener diode, the operational amplifier adopts a single power supply, the input part of the operational amplifier adopts VDD/2, and only clock signals in two states of 0 and 1 are adopted.

Referring to fig. 2, the digital circuit is composed of a shift register chip and an LED lamp, the digital circuit is a sequential logic circuit formed by 8-bit D flip-flop chips, the output of each D flip-flop is connected to the next D flip-flop, the initial input of the digital circuit is at a high level, and the state of each flip-flop in the initial state is 0.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims

1. The utility model provides a but cyclic lighting LED lamp's USB flash disk, includes USB flash disk, clock generation circuit and digital circuit, its characterized in that: the USB flash disk is composed of a main control chip, a storage chip, an indicator lamp and a crystal oscillator, the clock generating circuit is composed of an operational amplifier, a resistor and a capacitor, and the digital circuit is composed of a shift register chip and an LED lamp.

2. The usb flash disk capable of cyclically lighting an LED lamp of claim 1, wherein: the USB interface of USB flash disk is 5V direct current power supply, and can light the LED lamp in turn according to the chronogenesis.

3. The usb flash disk capable of cyclically lighting an LED lamp of claim 1, wherein: the clock generation circuit is provided with a zener diode, and the operational amplifier adopts a single power supply.

4. A usb disk capable of cyclically lighting an LED lamp according to claim 3, wherein: the input part of the operational amplifier adopts VDD/2, and only clock signals in two states of 0 and 1 are adopted.

5. The usb flash disk capable of cyclically lighting an LED lamp of claim 1, wherein: the digital circuit forms a sequential logic circuit by using 8-bit D flip-flop chips, and the output of each D flip-flop is connected with the next D flip-flop.

6. The usb flash disk capable of cyclically lighting an LED lamp of claim 5, wherein: the digital circuit has an initial input of high level and the state of each flip-flop in the initial state is 0.