CN108415684A - A kind of intelligent blackboard list Driver Card - Google Patents
A kind of intelligent blackboard list Driver Card Download PDFInfo
- Publication number
- CN108415684A CN108415684A CN201810434158.8A CN201810434158A CN108415684A CN 108415684 A CN108415684 A CN 108415684A CN 201810434158 A CN201810434158 A CN 201810434158A CN 108415684 A CN108415684 A CN 108415684A
- Authority
- CN
- China
- Prior art keywords
- signal processing
- processing chip
- circuit board
- connect
- ports
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G3/2096—Details of the interface to the display terminal specific for a flat panel
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The present invention provides a kind of intelligent blackboard list Driver Card, belongs to board technical field, including：Circuit board；Signal processing chip；Audio and video port, the audio and video port are arranged on the circuit board and connect the signal processing chip；Analog signal output mouth, the analog signal output mouth are arranged on the circuit board and connect the signal processing chip；Digital signal output end mouth, the digital signal output end mouth are arranged on the circuit board and connect the signal processing chip；The ports VBY1, the ports VBY1 are arranged on the circuit board and connect the signal processing chip；Power amplifier output port, the power amplifier output port are arranged on the circuit board and connect the signal processing chip；Power input port.Beneficial effects of the present invention：Board is single driving, and signal handling capacity is stronger, and working performance is preferable.
Description
Technical field
The present invention relates to board technical field more particularly to a kind of intelligent blackboard list Driver Cards.
Background technology
In mathematics education and market application field, it is black usually to use the intelligence with audio and/or video playback capability
Plate, smart card signal handling capacity in the prior art is weaker, and working performance is poor.
Invention content
For problems of the prior art, the present invention proposes a kind of intelligent blackboard list Driver Card.
The present invention adopts the following technical scheme that：
A kind of intelligent blackboard list Driver Card, including：
Circuit board；
Signal processing chip, the signal processing chip are arranged on the circuit board；
Audio and video input port, the audio and video input port are arranged on the circuit board and connect the signal processing
Chip；
Analog signal output mouth, the analog signal output mouth are arranged on the circuit board and connect the signal
Processing chip；
Digital signal output end mouth, the digital signal output end mouth are arranged on the circuit board and connect the signal
Processing chip；
The ports VBY1 2, the ports VBY1 2 are arranged on the circuit board and connect the signal processing chip；
Power amplifier output port, the power amplifier output port are arranged on the circuit board and connect the signal processing core
Piece；
Power input port, the power input port are arranged on the circuit board and connect the signal processing core
Piece.
Preferably, the audio and video input port includes：
First ports HDMI, the first ports HDMI are arranged on the circuit board and connect the signal processing core
Piece；
First ports DVI, the first ports DVI are arranged on the circuit board and connect the signal processing chip；
First ports DP, the first ports DP are arranged on the circuit board and connect the signal processing chip；
First VGA port, first VGA port are arranged on the circuit board and connect the signal processing chip；
First USB port, first USB port are arranged on the circuit board and connect the signal processing chip.
Preferably, the digital signal output end mouth includes：
2nd ports HDMI 8, the 2nd ports HDMI are separately positioned on the circuit board and connect at the signal
Manage chip；
2nd ports DVI, the 2nd ports DVI are arranged on the circuit board and connect the signal processing chip；
2nd ports DP, the 2nd ports DP are arranged on the circuit board and connect the signal processing chip；
Second USB port, second USB port are arranged on the circuit board and connect the signal processing chip.
Preferably, the intelligent blackboard list Driver Card further includes：
Third USB port, the third USB port are separately positioned on the circuit board and connect the signal processing core
Piece.
Preferably, the intelligent blackboard list Driver Card further includes：
Backlight port, the backlight port is arranged on the circuit board and the connection signal processing chip.
Preferably, the intelligent blackboard list Driver Card further includes：
Card agriculture seat port, the card agriculture seat port is arranged on the circuit board and the connection signal processing chip.
Preferably, the intelligent blackboard list Driver Card further includes：
The ports IR, the ports IR are arranged on the circuit board and the connection signal processing chip.
Preferably, the intelligent blackboard list Driver Card further includes：
Key-press module, the key-press module is arranged on the circuit board and the connection signal processing chip, for carrying
Supply user inputs the operating instruction and the operating instruction is sent to the processor, and the processor is according to the fortune
Row instruction is operated accordingly.
Preferably, the intelligent blackboard list Driver Card further includes：
Wireless microphone module, the wireless microphone module is arranged on the circuit board and the connection signal processing core
Piece, the wireless microphone module is for being supplied to user's input speech signal and the voice signal being delivered at the signal
Chip is managed to carry out audio frequency process to the voice signal by the signal processing chip, the signal processing chip is according to pre-
If processing strategy carries out digital audio processing to the voice signal and analogue audio frequency is handled to obtain mixing sound signal and export,
The wireless microphone module be additionally operable to receive the mixing sound signal and according to default output policy to the mixing because signal into
Row digital audio exports and analogue audio frequency output.
Beneficial effects of the present invention：Board is single driving, and signal handling capacity is stronger, and working performance is preferable.
Description of the drawings
Fig. 1 is the structural schematic diagram of intelligent blackboard list Driver Card in a preferred embodiment of the present invention.
Specific implementation mode
It should be noted that in the absence of conflict, following technical proposals can be combined with each other between technical characteristic.
The specific implementation mode of the present invention is further described below in conjunction with the accompanying drawings：
As shown in Figure 1, Fig. 1 is only schematic diagram, when specifically used, the installation site of each component is adjusted according to actual needs
It is whole, a kind of intelligent blackboard list Driver Card, including：
Circuit board 1；
Signal processing chip 15, above-mentioned signal processing chip 15 are arranged on foregoing circuit plate 1；
Audio and video input port 10, above-mentioned audio and video input port 10 are arranged on foregoing circuit plate 1 and connect above-mentioned letter
Number processing chip 15；
Analog signal output mouth, above-mentioned analog signal output mouth are arranged on foregoing circuit plate 1 and connect above-mentioned letter
Number processing chip 15；
Digital signal output end mouth, above-mentioned digital signal output end mouth are arranged on foregoing circuit plate 1 and connect above-mentioned letter
Number processing chip 15；
The ports VBY1 2, the above-mentioned ports VBY1 2 are arranged on foregoing circuit plate 1 and connect above-mentioned signal processing chip 15；
Power amplifier output port, above-mentioned power amplifier output port are arranged on foregoing circuit plate 1 and connect above-mentioned signal processing core
Piece 15；
Power input port 3, above-mentioned power input port 3 are arranged on foregoing circuit plate 1 and connect above-mentioned signal processing
Chip 15；
Lotus seat port 12, setting on 1 and connect above-mentioned signal processing chip 15 on circuit boards.
In the present embodiment, board is single driving, and signal handling capacity is stronger, and working performance is preferable.
Further, this driving plate major function is as follows：LOGO pictures, boot LOGO.Support 2k and 4k resolution ratio.With group
It closes key and enters menu.General purpose O SD menus：Common-mode is only open (total volume+- and channel selecting).Remote control menu has Universal Die
The professional 2 kinds of patterns of formula and factory (including brightness, contrast, microphone item menu can select microphone, bass, 3 middle pitches, 4 high pitchs
Adjust etc.).User's open port needs：1 road DP, 3 road HDMI, 1 tunnel USB interface, audio input 3.25, remixed audio is defeated
Go out RCA.Access internal stereo process port：Ops left and right audio channels are input to mainboard phoenix end interface, microphone signal
Input will card agriculture female seat.It is output to horn designs：Through power amplification after all total stereo process of audio signal, left and right acoustic channels is divided to hinder
Resist and exported for 4 Europe, is exported with row's interface.2*10W, 2*30W (big power amplifier) power supply can select power with wire jumper.OPS HDMI,
Usb (board upgrading is spare).
This driving plate is mainly used for supporting the TFT LCD liquid crystal displays of VBY1 interfaces, and driving plate band 1 road VGA and 1 road DVI connect
Mouth 1 road HDMI and 1 road DP, supports VBY1 output interfaces.Mainboard uses signal processing chip 15, and processing function is powerful, can prop up
Hold the standard and non-standard signal of various specifications.Using the device of high standard, there is good working performance.It is integrated 2*2 high
Quality image zooming engine can handle 4 4K2K@30Hz video input streams simultaneously.Built-in VBY1 interfaces, highest support resolution ratio
For the LCD Panel of 4096x2150@60Hz.Support the control of large-size screen monitors external power supply, super-low standby power consumption.Support PIP/PBP windows
Mouthful.Support L/R stereo audio input/output.* 4 digital composite interfaces are integrated, can support HDMI/DVI/DP/MHL interfaces,
In addition 1 tunnel simulation input port is integrated, PC (VGA) is supported to input.
In preferred embodiment, above-mentioned audio and video input port 10 includes：
First ports HDMI (not shown), above-mentioned first ports HDMI are arranged on foregoing circuit plate 1 and connect
State signal processing chip 15；
First ports DVI (not shown), above-mentioned first ports DVI are arranged on foregoing circuit plate 1 and connect above-mentioned
Signal processing chip 15；
First ports DP (not shown), above-mentioned first ports DP are arranged on foregoing circuit plate 1 and connect above-mentioned letter
Number processing chip 15；
First VGA port (not shown), above-mentioned first VGA port are arranged on foregoing circuit plate 1 and connect above-mentioned
Signal processing chip 15；
First USB port (not shown), above-mentioned first USB port are arranged on foregoing circuit plate 1 and connect above-mentioned
Signal processing chip 15.
In preferred embodiment, above-mentioned digital signal output end mouth includes：
Multiple 2nd ports HDMI 8, each above-mentioned 2nd ports HDMI 8 are separately positioned on foregoing circuit plate 1 and connect
Above-mentioned signal processing chip 15；
2nd ports DVI (not shown), the above-mentioned ports DVI are arranged on foregoing circuit plate 1 and connect above-mentioned signal
Processing chip 15；
2nd ports DP 9, above-mentioned 2nd ports DP 9 are arranged on foregoing circuit plate 1 and connect above-mentioned signal processing chip
15.；
Second USB port (not shown), above-mentioned second USB port are arranged on the circuit board 1 and connect above-mentioned
Signal processing chip 15.
In preferred embodiment, above-mentioned intelligent blackboard list Driver Card further includes：
Multiple third USB ports 14, each above-mentioned third USB port 14 are separately positioned on foregoing circuit plate 1 and connect
Above-mentioned signal processing chip 15.
In preferred embodiment, above-mentioned intelligent blackboard list Driver Card further includes：
Backlight port 4, above-mentioned backlight port 4 are arranged on foregoing circuit plate 1 and connect above-mentioned signal processing chip 15.
In preferred embodiment, above-mentioned intelligent blackboard list Driver Card further includes：
Card agriculture seat port 13, above-mentioned card agriculture seat port 13 is arranged on foregoing circuit plate 1 and the above-mentioned signal processing core of connection
Piece 15.
In preferred embodiment, above-mentioned intelligent blackboard list Driver Card further includes：
The ports IR 7, the above-mentioned ports IR 7 are arranged on foregoing circuit plate 1 and connect above-mentioned signal processing chip 15.
In preferred embodiment, above-mentioned intelligent blackboard list Driver Card further includes：
Key-press module 6, above-mentioned key-press module 6 is arranged on foregoing circuit plate 1 and the above-mentioned signal processing chip 15 of connection, uses
In being supplied to user to input above-mentioned operating instruction and above-mentioned operating instruction being sent to above-mentioned processor, above-mentioned processor is according to upper
Operating instruction is stated to be operated accordingly.
In preferred embodiment, above-mentioned intelligent blackboard list Driver Card further includes：
Wireless microphone module 9, above-mentioned wireless microphone module 9 is arranged on foregoing circuit plate 1 and the above-mentioned signal processing of connection
Chip 15, above-mentioned wireless microphone module 9 is for being supplied to user's input speech signal and being delivered to above-mentioned voice signal above-mentioned
Signal processing chip 15 to above-mentioned voice signal by above-mentioned signal processing chip 15 to carry out audio frequency process, above-mentioned signal processing
Chip 15 carries out digital audio processing and analogue audio frequency processing to be mixed according to default processing strategy to above-mentioned voice signal
Sound signal simultaneously exports, and above-mentioned wireless microphone module 9 is additionally operable to receive above-mentioned mixing sound signal and according to default output policy to upper
Mixing is stated because signal carries out digital audio output and analogue audio frequency output.
In the present embodiment, including wireless microphone audio port and two-way speaker etc..Wireless microphone audio port, institute
Wireless microphone audio port is stated to be arranged on the circuit board and connect the signal processing chip.Wireless microphone voice signal institute
It connects the processor and carries out speech audio processing function, digital audio processing mixes after processing with analog audio signal processing
Sound signal exports, sudden and violent to detain digital audio output and analog audio signal output.It acquires all audio signals and is transported to audio frequency process
Power amplification is output to two-way speaker after system.
In preferred embodiment, have analog signal VGA output interfaces, digital signal output interface (HDMI, DVI, DP,
USB)。
With menu function key (power, menu, auto, up, down).
With connection terminal (POWER power interfaces, KEY BOARD keystroke interfaces, 8chVX1 output interfaces, SPEAKER loudspeakers
Interface, HDMI input interfaces, backlight interface, IR interfaces, DP interfaces, audio input interface, power amplifier output interface, USB
TYPE-A interfaces, USB TYPE-A interfaces, USB TYPE-B interfaces, card agriculture seated connection mouth).
By description and accompanying drawings, the exemplary embodiments of the specific structure of specific implementation mode are given, based on present invention essence
God can also make other conversions.Although foregoing invention proposes existing preferred embodiment, however, these contents are not intended as
Limitation.
For a person skilled in the art, after reading above description, various changes and modifications undoubtedly will be evident.
Therefore, appended claims should regard the whole variations and modifications for covering the true intention and range of the present invention as.It is weighing
The range and content of any and all equivalences within the scope of sharp claim, are all considered as still belonging to the intent and scope of the invention.
Claims (9)
1. a kind of intelligent blackboard list Driver Card, which is characterized in that including：
Circuit board；
Signal processing chip, the signal processing chip are arranged on the circuit board；
Audio and video input port, audio and video input port port are arranged on the circuit board and connect the signal processing
Chip；
Analog signal output mouth, the analog signal output mouth are arranged on the circuit board and connect the signal processing
Chip；
Digital signal output end mouth, the digital signal output end mouth are arranged on the circuit board and connect the signal processing
Chip；
The ports VBY1, the ports VBY1 are arranged on the circuit board and connect the signal processing chip；
Power amplifier output port, the power amplifier output port are arranged on the circuit board and connect the signal processing chip；
Power input port, the power input port are arranged on the circuit board and connect the signal processing chip.
2. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the audio and video input port includes：
First ports HDMI, the first ports HDMI are arranged on the circuit board and connect the signal processing chip；
First ports DVI, the first ports DVI are arranged on the circuit board and connect the signal processing chip；
First ports DP, the first ports DP are arranged on the circuit board and connect the signal processing chip；
First VGA port, first VGA port are arranged on the circuit board and connect the signal processing chip；
First USB port, first USB port are arranged on the circuit board and connect the signal processing chip.
3. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the digital signal output end mouth includes：
2nd ports HDMI, the 2nd ports HDMI are separately positioned on the circuit board and connect the signal processing core
Piece；
2nd ports DVI, the 2nd ports DVI are arranged on the circuit board and connect the signal processing chip；
2nd ports DP, the 2nd ports DP are arranged on the circuit board and connect the signal processing chip；
Second USB port, second USB port are arranged on the circuit board and connect the signal processing chip.
4. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the intelligent blackboard list Driver Card also wraps
It includes：
Third USB port, the third USB port are separately positioned on the circuit board and connect the signal processing chip.
5. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the intelligent blackboard list Driver Card also wraps
It includes：
Backlight port, the backlight port is arranged on the circuit board and the connection signal processing chip.
6. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the intelligent blackboard list Driver Card also wraps
It includes：
Card agriculture seat port, the card agriculture seat port is arranged on the circuit board and the connection signal processing chip.
7. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the intelligent blackboard list Driver Card also wraps
It includes：
The ports IR, the ports IR are arranged on the circuit board and the connection signal processing chip.
8. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the intelligent blackboard list Driver Card also wraps
It includes：
Key-press module, the key-press module is arranged on the circuit board and the connection signal processing chip, for being supplied to
User inputs the operating instruction and the operating instruction is sent to the processor, and the processor refers to according to the operation
Order is operated accordingly.
9. intelligent blackboard list Driver Card according to claim 1, which is characterized in that the intelligent blackboard list Driver Card also wraps
It includes：
Wireless microphone module, the wireless microphone module is arranged on the circuit board and the connection signal processing chip, institute
Wireless microphone module is stated for being supplied to user's input speech signal and the voice signal being delivered to the signal processing core
Piece to the voice signal by the signal processing chip to carry out audio frequency process, and the signal processing chip is according to default place
Reason strategy carries out digital audio processing to the voice signal and analogue audio frequency is handled to obtain mixing sound signal and export, described
Wireless microphone module be additionally operable to receive the mixing sound signal and according to default output policy to the mixing because signal is into line number
Word audio output and analogue audio frequency output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434158.8A CN108415684A (en) | 2018-05-08 | 2018-05-08 | A kind of intelligent blackboard list Driver Card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810434158.8A CN108415684A (en) | 2018-05-08 | 2018-05-08 | A kind of intelligent blackboard list Driver Card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108415684A true CN108415684A (en) | 2018-08-17 |
Family
ID=63138251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810434158.8A Pending CN108415684A (en) | 2018-05-08 | 2018-05-08 | A kind of intelligent blackboard list Driver Card |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108415684A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986684A (en) * | 2020-09-08 | 2020-11-24 | 广州视源电子科技股份有限公司 | Audio and video processing circuit and electronic equipment |
| CN113535636A (en) * | 2021-06-30 | 2021-10-22 | 成都中微达信科技有限公司 | Computing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780745A (en) * | 2009-12-29 | 2010-07-21 | 朱诚 | Flat-panel display and multimedia integrated combined blackboard |
| CN201910866U (en) * | 2010-12-30 | 2011-07-27 | 北京加维通讯电子技术有限公司 | High-definition television board card with various digital video receiving functions |
| CN201928387U (en) * | 2011-01-18 | 2011-08-10 | 厦门大学 | Integrated course recording device |
| CN106454153A (en) * | 2016-09-08 | 2017-02-22 | 青岛海信电器股份有限公司 | Touch terminal and display method thereof |
-
2018
- 2018-05-08 CN CN201810434158.8A patent/CN108415684A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780745A (en) * | 2009-12-29 | 2010-07-21 | 朱诚 | Flat-panel display and multimedia integrated combined blackboard |
| CN201910866U (en) * | 2010-12-30 | 2011-07-27 | 北京加维通讯电子技术有限公司 | High-definition television board card with various digital video receiving functions |
| CN201928387U (en) * | 2011-01-18 | 2011-08-10 | 厦门大学 | Integrated course recording device |
| CN106454153A (en) * | 2016-09-08 | 2017-02-22 | 青岛海信电器股份有限公司 | Touch terminal and display method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111986684A (en) * | 2020-09-08 | 2020-11-24 | 广州视源电子科技股份有限公司 | Audio and video processing circuit and electronic equipment |
| CN113535636A (en) * | 2021-06-30 | 2021-10-22 | 成都中微达信科技有限公司 | Computing device |
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