CN113724537A - Demonstration device for English word teaching and use method - Google Patents
Demonstration device for English word teaching and use method Download PDFInfo
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- CN113724537A CN113724537A CN202110950976.5A CN202110950976A CN113724537A CN 113724537 A CN113724537 A CN 113724537A CN 202110950976 A CN202110950976 A CN 202110950976A CN 113724537 A CN113724537 A CN 113724537A
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- 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
- G09B1/00—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways
- G09B1/02—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements
- G09B1/04—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols
- G09B1/06—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols and being attachable to, or mounted on, the support
- G09B1/08—Manually or mechanically operated educational appliances using elements forming, or bearing, symbols, signs, pictures, or the like which are arranged or adapted to be arranged in one or more particular ways and having a support carrying or adapted to carry the elements the elements each bearing a single symbol or a single combination of symbols and being attachable to, or mounted on, the support by means of magnets
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- 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
- G09B5/065—Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
The invention relates to a demonstration device for English word teaching, which comprises a base, wherein shaft seats are respectively arranged at two ends of the base, rotary columns are respectively rotatably arranged at the inner sides of the shaft seats, a demonstration board is rotatably arranged at the top end between the two rotary columns, a display screen is arranged on the top side of the base through a supporting arm and is positioned above the demonstration board, a storage box is arranged at the bottom end of the outer side of the demonstration board, the rotary boards are rotatably arranged on the storage box, a plurality of magnetic stripes are arranged on the outer side of the demonstration board, and letter blocks are respectively arranged on the outer side of the magnetic stripes and inside the storage box; after the teaching is completed, the threaded rod is driven to rotate through the second motor, then the slider driving the threaded connection moves in the sliding groove, the protective cover plate for protecting eyes is moved, the protective cover plate is cleaned through the rectangular sleeve connected by the connecting arm at the moment, the outer wall of the protective cover plate is cleaned through the cleaning sponge, the display screen is protected through the protective cover plate, and automatic cleaning is performed on the protective cover plate regularly.
Description
Technical Field
The invention relates to the technical field of English teaching, in particular to a demonstration device for English word teaching and a using method.
Background
English is the official language used in most countries, and english is also the second most widespread language in the world, and is also one of the official languages of the european union, most international organizations and the english federal countries, and english is also one of the important subjects of education in schools in China.
When the English words are subjected to teaching demonstration, the letter words are combined and then are installed or written on the blackboard, but the interaction between a student and a teacher is inconvenient, and the practical ability of the student cannot be improved; when supplementary display screen was taught simultaneously, can be stained with on the display screen and attach dust and impurity, need regularly clear up specially, nevertheless directly wipe and cause the screen to damage easily.
Disclosure of Invention
The invention provides a demonstration device for English word teaching and a use method thereof, which solve the problems that when English words are taught and demonstrated, letter words are combined and then installed or written on a blackboard, but the interaction between students and teachers is inconvenient, and the practical ability of the students cannot be improved; when supplementary display screen was taught simultaneously, can be stained with on the display screen and attach dust and impurity, need regularly clear up specially, but directly wipe the technical problem who causes the screen to damage easily.
In order to achieve the purpose, the invention adopts the following technical scheme:
a demonstration device for English word teaching comprises a base, wherein shaft seats are respectively installed at two ends of the base, rotating columns are respectively installed on the inner sides of the shaft seats in a rotating mode, a demonstration board is installed between the two rotating columns in a rotating mode, a display screen is installed on the top side of the base through a supporting arm, and the display screen is located above the demonstration board;
the bottom end of the outer side of the display board is provided with a storage box, the storage box is rotatably provided with a rotating board, the outer side of the display board is provided with a plurality of magnetic stripes, and the outer side of the magnetic stripes and the inside of the storage box are both provided with letter blocks;
the display screen is characterized in that a rectangular sleeve is installed at one end of the display screen through a connecting arm, cleaning sponge is arranged inside the rectangular sleeve, a protective cover plate is slidably installed on the outer side of the display screen, the protective cover plate penetrates through the rectangular sleeve, and the outer side face of the protective cover plate is in contact with the cleaning sponge.
Preferably, one end a first motor is installed on the outer side of the shaft seat, a first rotating shaft is installed at the output end of the first motor, the first rotating shaft penetrates through the shaft seat and the bottom end of the rotating column and is provided with a first chain wheel, and the first rotating shaft is fixedly connected with the rotating column.
Preferably, show board both ends middle part and all install first pivot, and first pivot is connected with rotary column top bearing respectively, and the first pivot of one end runs through the rotary column and installs the second sprocket, and the number of teeth of second sprocket is the half of first sprocket number of teeth.
Preferably, one end the third pivot is installed to the rotary column outside mid bearing, two drive sprocket are installed to third pivot outer end, and two drive sprocket pass through chain drive with first sprocket and second sprocket respectively and are connected.
Preferably, the lug seat is all installed at bin both ends top, and installs the motor in the one end lug seat outside, the fourth pivot is installed to the motor output, the fourth pivot runs through the lug seat and changes the board, and the fourth pivot is connected with the lug seat bearing, and fourth pivot and commentaries on classics board fixed connection.
Preferably, the letter block internally mounted has magnet, and the letter block passes through magnet and adsorbs on the magnetic stripe.
Preferably, the spout has been seted up on the display screen top side, the second motor is installed to the display screen other end, and the second motor output is located the spout and installs the threaded rod, threaded rod outside screw thread cover is equipped with the slider, and the slider is close to second motor end top side with the safety cover board and is connected.
A use method of a demonstration device for English word teaching comprises the following specific operation steps:
the method comprises the following steps: the first motor drives the first rotating shaft and the first chain wheel to rotate, so as to drive the rotating column to rotate between the shaft seats until the rotating column in a vertical state rotates to a horizontal state, and at the moment, the first chain wheel and the chain drive the driving chain wheel to rotate, thereby realizing the synchronous rotation of the third rotating shaft and the other transmission chain wheel, realizing the rotation of the second chain wheel through chain transmission, and when the first chain wheel rotates 90 degrees, the second chain wheel rotates 180 degrees, then the display board in the vertical state is rotated to the horizontal state through the second rotating shaft, the motor on the storage box drives the rotating plate to rotate at the same time, the rotating plate is driven to rotate for 135 degrees, the opening of the storage box is ensured to be always upward, at the moment, the corresponding letter blocks in the storage box are taken out and adsorbed on the magnetic stripes to be combined into different English words, then the first motor and the motor start to work, and the display board rotates to a vertical state for word display;
step two: carry out animation and pronunciation broadcast supplementary teaching through the display screen on the support arm simultaneously, after the teaching is accomplished, it is rotatory to drive the threaded rod through the second motor, and then drives threaded connection's slider and remove in the spout, will protect the safety cover board of eyes to remove, and the protection cover board clears up the protection cover board outer wall through the rectangle cover that the linking arm is connected this moment, through the clearance sponge.
The invention has the beneficial effects that: the first motor drives the first rotating shaft and the first chain wheel to rotate, the rotating column is further driven to rotate between the shaft seats until the rotating column in a vertical state rotates to a horizontal state, at the moment, the first chain wheel and the chain drive one transmission chain wheel to rotate, further, synchronous rotation of the third rotating shaft and the other transmission chain wheel is realized, rotation of the second chain wheel is realized through chain drive, when the first chain wheel rotates 90 degrees, the second chain wheel rotates 180 degrees, further, the display board in the vertical state rotates to the horizontal state through the second rotating shaft, a student can conveniently take out corresponding letter blocks in the storage box to be adsorbed onto a magnetic stripe, different English words are combined, manual operation of the student is facilitated, manual operation capability of the student is improved, learning experience is enhanced, then the first motor rotates until the display board rotates to the vertical state, visual comparison with English on the display screen is facilitated when the student watches are facilitated, the impression of students can be deepened conveniently;
meanwhile, in the rotating process of the display board, the motor on the storage box drives the rotating board to rotate simultaneously to drive the rotating board to rotate, so that the opening of the storage box is always upward, and the letter blocks can be conveniently taken and stored in different states while being stored;
after the teaching is completed, the threaded rod is driven to rotate through the second motor, then the slider driving the threaded connection moves in the sliding groove, the protective cover plate for protecting eyes is moved, the protective cover plate is cleaned through the rectangular sleeve connected by the connecting arm at the moment, the outer wall of the protective cover plate is cleaned through the cleaning sponge, the display screen is protected through the protective cover plate, and automatic cleaning is performed on the protective cover plate regularly.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a schematic view of a rectangular sleeve according to the present invention.
Illustration of the drawings:
1. a base; 2. a shaft seat; 3. turning the column; 4. a display board; 5. a support arm; 6. a display screen; 7. a first motor; 8. a first rotating shaft; 9. a first sprocket; 10. a second rotating shaft; 11. a second sprocket; 12. a third rotating shaft; 13. a drive sprocket; 14. a storage tank; 15. an ear mount; 16. a motor; 17. rotating the plate; 18. a magnetic strip; 19. a letter block; 20. a protective cover plate; 21. a chute; 22. a threaded rod; 23. a second motor; 24. a slider; 25. a connecting arm; 26. a rectangular sleeve; 27. cleaning the sponge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Specific examples are given below.
Referring to fig. 1 to 4, the demonstration device for teaching english words comprises a base 1, wherein shaft seats 2 are respectively installed at two ends of the base 1, rotating columns 3 are respectively installed on the inner sides of the shaft seats 2 in a rotating mode, a demonstration board 4 is installed between the two rotating columns 3 in a rotating mode, a display screen 6 is installed on the top side of the base 1 through a supporting arm 5, and the display screen 6 is located above the demonstration board 4;
the bottom end of the outer side of the display board 4 is provided with a storage box 14, the storage box 14 is rotatably provided with a rotating board 17, the outer side of the display board 4 is provided with a plurality of magnetic stripes 18, and the outer sides of the magnetic stripes 18 and the inside of the storage box 14 are both provided with letter blocks 19;
As an embodiment of the present invention, a first motor 7 is installed outside the shaft seat 2 at one end, and a first rotating shaft 8 is installed at an output end of the first motor 7, the first rotating shaft 8 penetrates through the shaft seat 2 and a bottom end of the rotating column 3 and is installed with a first chain wheel 9, the first rotating shaft 8 is fixedly connected with the rotating column 3, and the first rotating shaft 8 and the first chain wheel 9 are driven to rotate by the first motor 7, so as to drive the rotating column 3 to rotate between the shaft seats 2.
As an embodiment of the invention, the middle parts of both ends of the display board 4 are provided with the first rotating shafts 8, the first rotating shafts 8 are respectively connected with the top end bearings of the rotating columns 3, and the first rotating shafts 8 at one end penetrate through the rotating columns 3 and are provided with second chain wheels 11, the number of teeth of the second chain wheel 11 is half of that of the first chain wheel 9, a third rotating shaft 12 is arranged at the middle part of the outer side of the rotating column 3 at one end, two transmission chain wheels 13 are arranged at the outer end of the third rotating shaft 12, and the two transmission chain wheels 13 are respectively connected with the first chain wheel 9 and the second chain wheel 11 through chain transmission, one transmission chain wheel 13 is driven to rotate through the first chain wheel 9 and the chain transmission, and then the synchronous rotation of the third rotating shaft 12 and the other transmission chain wheel 13 is realized, the rotation of the second chain wheel 11 is realized through chain transmission, and the rotation angle of the second chain wheel 11 is 2 times of the rotation angle of the first chain wheel 9.
As an embodiment of the present invention, the top of both ends of the storage box 14 is provided with the ear seat 15, the outer side of one end of the ear seat 15 is provided with the motor 16, the output end of the motor 16 is provided with a fourth rotating shaft, the fourth rotating shaft penetrates through the ear seat 15 and the rotating plate 17, the fourth rotating shaft is in bearing connection with the ear seat 15, the fourth rotating shaft is fixedly connected with the rotating plate 17, the motor 16 on the storage box 14 drives the rotating plate 17 to rotate simultaneously, the rotating plate 17 is driven to rotate 135 degrees, and it is ensured that the opening of the storage box 14 is always upward.
In one embodiment of the present invention, a magnet is installed inside the letter block 19, and the letter block 19 is attracted to the magnetic stripe 18 by the magnet, so that the letter block 19 is assembled on the magnetic stripe 18.
As an implementation mode of the invention, a sliding groove 21 is formed on the top side of the display screen 6, a second motor 23 is mounted at the other end of the display screen 6, a threaded rod 22 is mounted at the output end of the second motor 23 and positioned in the sliding groove 21, a sliding block 24 is sleeved on the outer side of the threaded rod 22 in a threaded manner, the sliding block 24 is connected with the top side of the protective cover plate 20 close to the end of the second motor 23, the threaded rod 22 is driven to rotate by the second motor 23, and the sliding block 24 in threaded connection is driven to move in the sliding groove 21.
A use method of a demonstration device for English word teaching comprises the following specific operation steps:
the method comprises the following steps: the first motor 7 drives the first rotating shaft 8 and the first chain wheel 9 to rotate, and then the rotating column 3 is driven to rotate between the shaft seat 2 until the rotating column 3 in a vertical state rotates to a horizontal state, at the moment, the first chain wheel 9 and chain transmission drive one transmission chain wheel 13 to rotate, and further synchronous rotation of the third rotating shaft 12 and the other transmission chain wheel 13 is realized, rotation of the second chain wheel 11 is realized through chain transmission, and when the first chain wheel 9 rotates by 90 degrees, the second chain wheel 11 rotates by 180 degrees, and then the display board 4 in the vertical state rotates to the horizontal state through the second rotating shaft 10, at the moment, the motor 16 on the storage box 14 drives the rotating board 17 to simultaneously rotate, the rotating board 17 is driven to rotate by 135 degrees, the opening of the storage box 14 is ensured to be always upward, at the moment, the corresponding letter block 19 in the storage box 14 is taken out and adsorbed on the magnetic stripe 18 to be combined into different English words, and then the first motor 7 and the motor 16 start to work, the display board 4 is rotated to a vertical state for word display;
step two: carry out animation and pronunciation broadcast auxiliary teaching simultaneously through display screen 6 on the support arm 5, after the teaching is accomplished, it is rotatory to drive threaded rod 22 through second motor 23, and then drives threaded connection's slider 24 and remove in spout 21, will protect the safety cover board 20 of eyes to remove, and protection cover board 20 clears up the outer wall of safety cover board 20 through the rectangle cover 26 that linking arm 25 is connected this moment, through clearance sponge 27.
The first motor 7 drives the first rotating shaft 8 and the first chain wheel 9 to rotate, so as to drive the rotating column 3 to rotate between the shaft seat 2 until the rotating column 3 in a vertical state rotates to a horizontal state, at the moment, the first chain wheel 9 and chain transmission drive one transmission chain wheel 13 to rotate, so as to realize synchronous rotation of the third rotating shaft 12 and the other transmission chain wheel 13, the second chain wheel 11 rotates through chain transmission, and when the first chain wheel 9 rotates 90 degrees, the second chain wheel 11 rotates 180 degrees, so that the display board 4 in the vertical state rotates to the horizontal state through the second rotating shaft 10, so that students can take out corresponding letter blocks 19 in the storage box 14 to be adsorbed onto the magnetic strip 18 to be combined into different words, thereby facilitating manual operation of the students, improving the manual capability of the students, enhancing the learning experience, and then the first motor 7 until the display board 4 rotates to the vertical state, the English can be visually compared with English on the display screen 6 conveniently while being watched conveniently, so that the impression of students can be deepened conveniently;
meanwhile, in the rotating process of the display board 4, the motor 16 on the storage box 14 drives the rotating plate 17 to rotate at the same time, so that the rotating plate 17 is driven to rotate by 135 degrees, the opening of the storage box 14 is ensured to be always upward, and the letter blocks 19 can be conveniently taken and stored in different states while being stored;
after the teaching is accomplished, it is rotatory to drive threaded rod 22 through second motor 23, and then drives threaded connection's slider 24 and remove in spout 21, will protect eyes's protection cover plate 20 and remove, and protection cover plate 20 clears up protection cover plate 20 outer wall through clearance sponge 27 through rectangle cover 26 that linking arm 25 is connected this moment, protects display screen 6 through protection cover plate 20, and regularly carries out automatic clearance to protection cover plate 20.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The demonstration device for teaching English words is characterized by comprising a base (1), wherein shaft seats (2) are mounted at two ends of the base (1), rotating columns (3) are rotatably mounted on the inner sides of the shaft seats (2), a demonstration board (4) is rotatably mounted at the top end between the two rotating columns (3), a display screen (6) is mounted on the top side of the base (1) through a supporting arm (5), and the display screen (6) is located above the demonstration board (4);
the bottom end of the outer side of the display board (4) is provided with a storage box (14), the storage box (14) is rotatably provided with a rotating plate (17), the outer side of the display board (4) is provided with a plurality of magnetic stripes (18), and the outer side of the magnetic stripes (18) and the inside of the storage box (14) are both provided with letter blocks (19);
rectangle cover (26) is installed through linking arm (25) to display screen (6) one end, rectangle cover (26) inside is provided with clearance sponge (27), display screen (6) outside slidable mounting has protection cover plate (20), protection cover plate (20) run through rectangle cover (26), and protection cover plate (20) lateral surface and clearance sponge (27) contact.
2. The demonstration device for teaching English words according to claim 1, wherein a first motor (7) is installed at one end of the shaft seat (2) on the outer side, a first rotating shaft (8) is installed at the output end of the first motor (7), the first rotating shaft (8) penetrates through the shaft seat (2) and the bottom end of the rotating column (3) and is provided with a first chain wheel (9), and the first rotating shaft (8) is fixedly connected with the rotating column (3).
3. The demonstration device for teaching English words according to claim 1, wherein the middle parts of the two ends of the demonstration board (4) are respectively provided with a first rotating shaft (8), the first rotating shafts (8) are respectively connected with the top end bearings of the rotating columns (3), the first rotating shaft (8) at one end penetrates through the rotating columns (3) and is provided with a second chain wheel (11), and the number of teeth of the second chain wheel (11) is one-half of the number of teeth of the first chain wheel (9).
4. The demonstration device for teaching English words according to claim 1, wherein a third rotating shaft (12) is mounted at the middle bearing of the outer side of the rotating column (3) at one end, two transmission chain wheels (13) are mounted at the outer end of the third rotating shaft (12), and the two transmission chain wheels (13) are respectively connected with the first chain wheel (9) and the second chain wheel (11) through chain transmission.
5. The demonstration device for teaching English words according to claim 1, wherein the top of each end of the storage box (14) is provided with an ear seat (15), the motor (16) is arranged outside one end of each ear seat (15), the output end of the motor (16) is provided with a fourth rotating shaft, the fourth rotating shaft penetrates through the ear seats (15) and the rotating plates (17), the fourth rotating shaft is connected with the ear seats (15) through bearings, and the fourth rotating shaft is fixedly connected with the rotating plates (17).
6. A demonstration device for teaching english words according to claim 1, wherein said letter block (19) has a magnet mounted inside, and said letter block (19) is attached to the magnetic stripe (18) by means of the magnet.
7. The demonstration device for teaching English words according to claim 1, wherein a sliding groove (21) is formed in the top side of the display screen (6), a second motor (23) is installed at the other end of the display screen (6), a threaded rod (22) is installed in the sliding groove (21) at the output end of the second motor (23), a sliding block (24) is sleeved on the outer side of the threaded rod (22) in a threaded manner, and the sliding block (24) is connected with the top side of the protective cover plate (20) close to the second motor (23).
8. Use of a presentation device for english word teaching according to any of claims 1 to 7, characterized in that the specific operating steps of the use are as follows:
the method comprises the following steps: the first rotating shaft (8) and the first chain wheel (9) are driven to rotate through the first motor (7), the rotating column (3) is further driven to rotate between the shaft seat (2) until the rotating column (3) in a vertical state rotates to a horizontal state, at the moment, the first chain wheel (9) and the chain drive one transmission chain wheel (13) to rotate, synchronous rotation of the third rotating shaft (12) and the other transmission chain wheel (13) is further realized, rotation of the second chain wheel (11) is realized through the chain drive, when the first chain wheel (9) rotates 90 degrees, the second chain wheel (11) rotates 180 degrees, further, the display board (4) in the vertical state rotates to the horizontal state through the second rotating shaft (10), at the moment, the motor (16) on the storage box (14) drives the rotating board (17) to rotate simultaneously, the rotating board (17) is driven to rotate 135 degrees, and the opening of the storage box (14) is guaranteed to be upward all the time, at the moment, the corresponding letter blocks (19) in the storage box (14) are taken out and adsorbed onto the magnetic strips (18) to form different English words, then the first motor (7) and the motor (16) start to work, and the display board (4) rotates to be in a vertical state for displaying the words;
step two: carry out animation and pronunciation broadcast auxiliary teaching simultaneously through display screen (6) on support arm (5), after the teaching is accomplished, it is rotatory to drive threaded rod (22) through second motor (23), and then slider (24) that drive threaded connection remove in spout (21), will protect protection cover plate (20) of eyes to remove, protection cover plate (20) are through rectangle cover (26) that linking arm (25) are connected this moment, clear up protection cover plate (20) outer wall through clearance sponge (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950976.5A CN113724537A (en) | 2021-08-18 | 2021-08-18 | Demonstration device for English word teaching and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110950976.5A CN113724537A (en) | 2021-08-18 | 2021-08-18 | Demonstration device for English word teaching and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113724537A true CN113724537A (en) | 2021-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110950976.5A Withdrawn CN113724537A (en) | 2021-08-18 | 2021-08-18 | Demonstration device for English word teaching and use method |
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| Country | Link |
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| CN (1) | CN113724537A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115171491A (en) * | 2022-07-11 | 2022-10-11 | 兰州城市学院 | A presentation device for digital circuit teaching |
-
2021
- 2021-08-18 CN CN202110950976.5A patent/CN113724537A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115171491A (en) * | 2022-07-11 | 2022-10-11 | 兰州城市学院 | A presentation device for digital circuit teaching |
| CN115171491B (en) * | 2022-07-11 | 2024-03-08 | 兰州城市学院 | Demonstration device for digital circuit teaching |
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Application publication date: 20211130 |