CN111292565A - Multipurpose adjustable economic management teaching display device - Google Patents
Multipurpose adjustable economic management teaching display device Download PDFInfo
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- CN111292565A CN111292565A CN202010105426.9A CN202010105426A CN111292565A CN 111292565 A CN111292565 A CN 111292565A CN 202010105426 A CN202010105426 A CN 202010105426A CN 111292565 A CN111292565 A CN 111292565A
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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
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/004—Repeatedly-usable boards or tablets for writing or drawing with illuminating devices
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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
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/18—Book-keeping or economics
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Abstract
The invention belongs to the technical field of economic management teaching devices, and discloses a multipurpose adjustable economic management teaching display device, which comprises a base, a supporting rod, a display device, a left teaching board and a right teaching board, wherein the supporting rod is arranged on the base; the display device comprises a base, a display device and a supporting rod, wherein the base is fixedly provided with the supporting rod, the upper part and the bottom of the interior of the display device are provided with limiting cylinders, and the upper ends of the supporting rods extend into the interior of the display device and are in limiting connection with the limiting cylinders; the display device is provided with a left teaching board and a right teaching board, and the movable transparent writing board is installed on the front sides of the left teaching board and the right teaching board through sliding rails. The display device controls the rotation of the first gear and the second gear through the motor, so that the lifting of the display device is realized; the upper end of the color band is inserted into the limiting through hole on the guide rod through the limiting insertion block, so that the color band is adjusted up and down; the teaching display screen is arranged, so that a teacher can conveniently display electronic teaching contents; the extension display panel is arranged, so that a teacher can conveniently write or display the extension content.
Description
Technical Field
The invention relates to the technical field of economic management teaching devices, in particular to a multipurpose adjustable economic management teaching display device.
Background
In the economic management teaching process, the analysis and explanation of some data and information by using the column diagrams are frequent and necessary processes for teaching, so that the comparison can be conveniently conducted to students for detailed explanation, however, the traditional mode is that teachers manually draw the column diagrams on a blackboard and wipe the column diagrams after use, the column diagrams need to be redrawn when needed, burden is added to the teaching of the teachers, and limited time of class is delayed, so that a plurality of teachers teach by using some existing column diagram demonstration teaching aids in the teaching process, but most of the existing demonstration teaching aids are disposable models, great waste is caused in the using process, some reusable demonstration teaching aids are available, the teaching aids are inaccurate, the demonstration can be conducted only according to a set distance, and the contrast between the column diagrams is poor, the accuracy is low, and the operability is poor; the utility model provides an economic management teaching display device, like chinese patent CN201711192840.2, including the teaching board, be equipped with the demonstration board on the teaching board, the left side of demonstration board is equipped with scale Y axle, and the higher authority side of demonstration board is equipped with scale X axle, the preceding bottom of demonstration board is equipped with horizontal back shaft, the wired axle sleeve of back shaft upper shield cover, every spool is sheathe in and is rolling up the typewriter ribbon, and the higher authority level correspondence of demonstration board is provided with the rotating groove, and the top end of typewriter ribbon passes the rotating groove and is provided with the clip, and the typewriter ribbon divide into has two sections of difference sign, and one section is located the demonstration board, another section is drawn into the spool cover, the back of demonstration board still is provided with a fixed band corresponding with the typewriter ribbon from the higher authority edge to. However, this device needs to be used for fixing the clip when adjusting the length of the ribbon, and on one hand, the clip is easy to lose, and on the other hand, this operation mode is too cumbersome and needs to be improved.
In the display device used for the economic management professional teaching, when the display device is applied to a step classroom, the height of the display device needs to be adjusted according to the size of the step classroom, but the display devices are fixed at one position and have no height adjusting function, so that the display device is not suitable for the step classrooms with various sizes; moreover, when the display devices are operated, the internal power circuit is lack of a feedback detection function, so that the output voltage is unstable and fluctuates, and the working stability of the display devices is reduced.
Disclosure of Invention
The invention mainly aims to provide a multipurpose adjustable economic management teaching display device; the display device controls the rotation of the first gear and the second gear through the motor, and the lifting of the display device is realized, so that the lifting function of the display device is realized, and the practicability is improved; a guide rod is arranged in the left teaching board, and the upper end of the color band is inserted into a limiting through hole in the guide rod through a limiting insertion block, so that the color band can be adjusted up and down; the teaching display screen moves up and down in the first accommodating groove through the electric push rod; the teacher can conveniently display the electronic teaching content; the expansion display panel slides left and right in the second accommodating groove through the slide way; the teacher can conveniently write or display the expanded content.
In order to achieve the purpose, the multipurpose adjustable economic management teaching display device comprises a base, a supporting rod, a display device, an electric push rod, a teaching display screen, a movable transparent writing board, an expansion display panel, a left teaching board and a right teaching board; the display device comprises a base, a display device and a supporting rod, wherein the base is fixedly provided with the supporting rod, the upper part and the bottom of the interior of the display device are provided with limiting cylinders, and the upper ends of the supporting rods extend into the interior of the display device and are in limiting connection with the limiting cylinders; the inner side of the upper end of the supporting rod is provided with driving teeth, the inner side of each driving tooth is in meshed connection with a first gear arranged in the display device, a second gear is in meshed connection above one side of each first gear, a driving rack is in meshed connection between the two second gears, and the bottom end of the driving rack is in driving connection with a motor;
the last left teaching board and the right teaching board that are provided with of display device, install the transparent clipboard of removal through the slide rail in left teaching board and right teaching board front side, the inside fixed mounting of left side teaching board has a plurality of guide arms, is provided with the ribbon box at every guide arm bottom front side, and the ribbon box is inside to be provided with the typewriter ribbon, typewriter ribbon upper end rigid coupling has spacing inserted block, and evenly arranged is provided with spacing through-hole on the every guide arm, the typewriter ribbon upper end is through spacing inserted block insert in the spacing through-hole of guide arm.
Optionally, a first accommodating groove is formed in the top of the display device, an electric push rod is installed at the bottom in the first accommodating groove, and a teaching display screen is fixedly connected to the telescopic end of the electric push rod; the teaching display screen moves up and down in the first accommodating groove through the electric push rod.
Optionally, the display device is provided with a second accommodating groove on the left side surface, the second accommodating groove is provided with an extension display panel in a sliding manner through a slide way, and the extension display panel slides left and right in the second accommodating groove through the slide way.
Optionally, a transparent display board is arranged on the movable transparent writing board corresponding to the guide rod, and scale marks are arranged on the side edge of the transparent display board.
Optionally, the bottom of the base is provided with a movable caster.
Optionally, the upper end of the display device is provided with a lighting lamp above the left teaching board and the right teaching board.
Optionally, a PLC controller is installed below the right end of the display device and is electrically connected with the electric push rod and the motor respectively.
Optionally, the display device is driven by a motor to move up and down through the first gear and the second gear.
Optionally, an antenna and a power module are arranged inside the PLC controller, and a control panel, a key and an indicator light are arranged on the PLC controller; the power supply module comprises a power supply circuit, the power supply circuit comprises an integrated circuit, a capacitor, a first resistor, a second resistor, a third resistor, an adjustable resistor and a voltage regulator tube, the model of the integrated circuit is BG602, the second end of the integrated circuit is connected with the third end of the integrated circuit, the third end of the integrated circuit is connected with the cathode of a voltage-stabilizing tube through a first resistor, the anode of the voltage-stabilizing tube is grounded, the fourth end of the integrated circuit is grounded, the seventh end of the integrated circuit is connected with the sixth end of the integrated circuit through a capacitor, the sixth end of the integrated circuit is respectively connected with the adjustable resistor and the third resistor, the eighth end of the integrated circuit is respectively connected with the second resistor and the adjustable resistor, the first end of the integrated circuit is connected with the eighth end of the integrated circuit through the second resistor, and the eighth end of the integrated circuit is grounded through a series circuit formed by the adjustable resistor and the third resistor.
Optionally, the electric push rod is an NH32-900 electric push rod.
According to the technical scheme, the display device controls the first gear and the second gear to rotate through the motor, so that the display device is lifted, the lifting function of the display device is realized, and the practicability of the display device is improved; moreover, in the power supply circuit, the output voltage can be sampled through the adjustable resistor and the third resistor, and meanwhile, the integrated circuit performs acquisition and feedback, so that the stable work of the power supply circuit is realized, and the stability of the device is improved;
the display device is provided with a left teaching board and a right teaching board, wherein the front sides of the left teaching board and the right teaching board are provided with a movable transparent writing board through a sliding rail, a guide rod is arranged in the left teaching board, and the upper end of a color band is inserted into a limiting through hole in the guide rod through a limiting insertion block, so that the color band is adjusted up and down;
according to the invention, the top of the display device is provided with the first accommodating groove, the bottom in the first accommodating groove is provided with the electric push rod, and the telescopic end of the electric push rod is fixedly connected with the teaching display screen; the teaching display screen moves up and down in the first accommodating groove through the electric push rod; the teacher can conveniently display the electronic teaching content; a second accommodating groove is formed in the side face of the display device, an expansion display panel is arranged in the second accommodating groove in a sliding mode through a sliding way, and the expansion display panel slides left and right in the second accommodating groove through the sliding way; the teacher can conveniently write or display the expanded content.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a multipurpose adjustable economic management teaching display device according to the present invention;
FIG. 2 is a schematic top view of a multipurpose adjustable economic management teaching display apparatus according to the present invention;
FIG. 3 is a schematic view of the left side of a display device of a multipurpose adjustable economic management teaching display device of the present invention;
FIG. 4 is a schematic cross-sectional view of a left longitudinal display slot of a multipurpose adjustable economic management teaching display device according to the present invention;
FIG. 5 is a schematic view of a movable transparent writing board in the multipurpose adjustable economic management teaching display device of the present invention;
fig. 6 is a schematic structural view of the multipurpose adjustable economic management teaching display device after being stored.
FIG. 7 is a schematic circuit diagram of a power supply circuit in a multipurpose adjustable economic management teaching display of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
2 | |
| 3 | |
4 | Display device |
| 5 | |
6 | |
| 7 | Movable transparent writing board | 8 | Lighting lamp |
| 9 | |
10 | |
| 11 | |
12 | |
| 13 | Limiting |
14 | |
| 15 | |
16 | |
| 17 | |
41 | |
| 42 | |
43 | Limiting through |
| 44 | Color band | 45 | Guide rod |
| 46 | Spacing plug block | 47 | A first |
| 48 | The second |
71 | |
| 72 | Graduation mark |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1-7, the present invention provides a multipurpose adjustable economic management teaching display device, which comprises a base 1, a support rod 2, a display device 4, an electric push rod 5, a teaching display screen 6, a movable transparent writing board 7, an extension display panel 9, a left teaching board 42 and a right teaching board 12; the base 1 is fixedly provided with a support rod 2, the upper part and the bottom part inside the display device 4 are provided with a limiting cylinder 13, and the upper end of the support rod 2 extends into the display device 4 and is mutually limited and connected with the limiting cylinder 13; the inner side of the upper end of the supporting rod 2 is provided with driving teeth, the inner side of each driving tooth is in meshed connection with a first gear 15 arranged in the display device 4, a second gear 14 is in meshed connection above one side of each first gear 15, a driving rack 16 is in meshed connection between the two second gears 14, and the bottom end of the driving rack 16 is in driving connection with a motor 17;
be provided with left teaching board 42 and right teaching board 12 on display device 4, install removal transparent clipboard 7 through slide rail 11 in left teaching board 42 and right teaching board 12 front side, the inside fixed mounting of left side teaching board 42 has a plurality of guide arms 45, is provided with ribbon cartridge 41 at every guide arm 45 bottom front side, and ribbon cartridge 41 is inside to be provided with typewriter ribbon 44, typewriter ribbon 44 upper end rigid coupling has spacing inserted block 46, and evenly arranged is provided with spacing through-hole 43 on every guide arm 45, typewriter ribbon 44 upper end is inserted in the spacing through-hole 43 of guide arm 45 through spacing inserted block 46.
Specifically, a first accommodating groove 47 is formed in the top of the display device 4, an electric push rod 5 is mounted at the bottom in the first accommodating groove 47, and a teaching display screen 6 is fixedly connected to the telescopic end of the electric push rod 5; the teaching display screen 6 moves up and down in the first accommodating groove 47 through the electric push rod 5.
Specifically, the second storage groove 48 has been seted up on the 4 left surfaces of display device, the second storage groove 48 slides through the slide and is provided with the extension display panel 9, and the extension display panel 9 slides from side to side in the second storage groove 48 through the slide.
Specifically, a transparent display plate 71 is arranged on the movable transparent writing board 7 corresponding to the guide rod 45, and scale marks 72 are arranged on the side edge of the transparent display plate 71.
Specifically, the bottom of the base 1 is provided with a movable caster 3.
Specifically, the upper end of the display device 4 is provided with a lighting lamp 8 above the left teaching board 42 and the right teaching board 12.
Specifically, install PLC controller 10 in display device 4 right-hand member below department, PLC controller 10 respectively with electric putter 5 and motor 17 electric connection.
Specifically, the display device 4 is driven by a motor 17 to move up and down through a first gear 15 and a second gear 14.
Specifically, an antenna and a power module are arranged inside the PLC controller 10, and a control panel, keys and an indicator lamp are arranged on the PLC controller 10; the power supply module comprises a power supply circuit, the power supply circuit comprises an integrated circuit U1, a capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, an adjustable resistor RP1 and a voltage regulator tube VD1, the model number of the integrated circuit U1 is BG602, the second end of the integrated circuit U1 is connected with the third end of the integrated circuit U1, the third end of the integrated circuit U1 is connected with the cathode of the voltage regulator tube VD1 through a first resistor R1, the anode of the voltage regulator tube VD1 is grounded, the fourth end of the integrated circuit U1 is grounded, the seventh end of the integrated circuit U1 is connected with the sixth end of the integrated circuit U1 through a capacitor C1, the sixth end of the integrated circuit U1 is respectively connected with the adjustable resistor RP1 and the third resistor R1, the eighth end of the integrated circuit U1 is respectively connected with the second resistor R1 and the adjustable resistor R1, the eighth end of the integrated circuit U1 is connected with the second end of the integrated circuit U1, the eighth end of the integrated circuit U1 is grounded through a series circuit consisting of an adjustable resistor RP1 and a third resistor R3; in the power supply circuit, a working power supply is input from the third end of the integrated circuit U1, the working power supply is output from the eighth end of the integrated circuit U1 after internal voltage stabilization output, then sampling is carried out by the adjustable resistor RP1 and the third resistor R3, and sampling voltage is fed back and collected by the sixth end of the integrated circuit U1, so that the output regulation of the power supply voltage is carried out, the stable output of the power supply circuit is improved, and the working stability of the display device is improved.
The power supply circuit has a feedback acquisition function, can realize feedback acquisition and further realize the function of stabilizing and adjusting the output voltage, the type of the integrated circuit is BG602, the types and the parameters of all components in a peripheral circuit are set values, and the parameters and the types of all peripheral components can be known by a person skilled in the art.
Specifically, the electric push rod 5 is an NH32-900 electric push rod.
The working principle and the using process of the invention are as follows: when the device is used, a teacher pushes the device to move to a teaching position through the supporting caster wheels 3, when the height is required to be adjusted, the motor 17 controls the driving rack 16 to lift, the driving rack 16 can control the second gears 14 on two sides to rotate, the second gears 14 can control the first gears 15 on the side to rotate, the first gears 15 can be in transmission with the supporting rods 2 on the side, and the lifting of the display device 4 is realized;
when a teacher needs to perform economic management analysis and explanation teaching on some data and information by using a bar chart, a movable transparent writing board 7 is installed on the front sides of a left teaching board 42 and a right teaching board 12 through a sliding rail 11, the movable transparent writing board 7 is moved to the right side, then a limit inserting block 26 is grasped by a hand to drive a color ribbon 44 to be drawn out from a ribbon box 41 and pulled to a required position, the limit inserting block 26 is inserted into a limit through hole 43 on a guide rod 45, after the positions of each guide rod 45 and the color ribbon 44 are adjusted, the movable transparent writing board 7 is moved to the left side, so that the transparent display board 71 and each guide rod 45 are superposed with the position of the color ribbon 44, a scale mark 72 is arranged on the side of the transparent display board 71, the height scales of each color column can be visually seen, and the teacher can write and carve on the movable transparent writing board; the ribbon 44 also facilitates up and down adjustment;
a first accommodating groove 47 is formed in the top of the display device 4, an electric push rod 5 is installed at the bottom in the first accommodating groove 47, and a teaching display screen 6 is fixedly connected to the telescopic end of the electric push rod 5; the teaching display screen 6 moves up and down in the first accommodating groove 47 through the electric push rod 5; the teacher can conveniently display the electronic teaching content; a second accommodating groove 48 is formed in the side surface of the display device 4, the second accommodating groove 48 is provided with an extended display panel 9 in a sliding manner through a slide way, and the extended display panel 9 slides left and right in the second accommodating groove 48 through the slide way; the teacher can conveniently write or display the expanded content.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A multipurpose adjustable economic management teaching display device is characterized by comprising a base (1), a supporting rod (2), a display device (4), an electric push rod (5), a teaching display screen (6), a movable transparent writing board (7), an expansion display panel (9), a left teaching board (42) and a right teaching board (12); the display device is characterized in that a supporting rod (2) is fixedly arranged on the base (1), limiting cylinders (13) are arranged above and at the bottom of the interior of the display device (4), and the upper ends of the supporting rods (2) extend into the interior of the display device (4) and are in limiting connection with the limiting cylinders (13); the inner side of the upper end of the supporting rod (2) is provided with driving teeth, the inner sides of the driving teeth are in meshed connection with first gears (15) arranged in the display device (4), a second gear (14) is in meshed connection above one side of each first gear (15), a driving rack (16) is in meshed connection between the two second gears (14), and the bottom end of the driving rack (16) is in driving connection with a motor (17);
be provided with left teaching board (42) and right teaching board (12) on display device (4), install removal transparent clipboard (7) through slide rail (11) at left teaching board (42) and right teaching board (12) front side, the inside fixed mounting of left side teaching board (42) has a plurality of guide arms (45), is provided with ribbon box (41) at every guide arm (45) bottom front side, and ribbon box (41) inside is provided with typewriter ribbon (44), typewriter ribbon (44) upper end rigid coupling has spacing inserted block (46), and evenly arranged is provided with spacing through-hole (43) on every guide arm (45), typewriter ribbon (44) upper end is inserted in spacing through-hole (43) of guide arm (45) through spacing inserted block (46).
2. The multipurpose adjustable economic management teaching display device according to claim 1, wherein a first accommodating groove (47) is formed in the top of the display device (4), an electric push rod (5) is installed at the bottom in the first accommodating groove (47), and a teaching display screen (6) is fixedly connected to the telescopic end of the electric push rod (5); the teaching display screen (6) moves up and down in the first accommodating groove (47) through the electric push rod (5).
3. The multipurpose adjustable economic management teaching display device according to claim 1, wherein a second storage groove (48) is formed in the left side surface of the display device (4), the second storage groove (48) is provided with an extended display panel (9) in a sliding manner through a slide way, and the extended display panel (9) slides left and right in the second storage groove (48) through the slide way.
4. The multipurpose adjustable economic management teaching display device according to claim 1, wherein the movable transparent writing board (7) is provided with a transparent display board (71) corresponding to the guide rod (45), and the side edge of the transparent display board (71) is provided with scale marks (72).
5. A multipurpose adjustable economic management teaching display device according to claim 1, characterized in that the base (1) is provided with castors (3) mounted on the bottom.
6. The multipurpose adjustable economic management teaching demonstration device according to claim 1 wherein the upper end of the demonstration device (4) is mounted with a lighting lamp (8) above the left teaching board (42) and the right teaching board (12).
7. The multipurpose adjustable economic management teaching display device according to claim 1, wherein a PLC controller (10) is installed below the right end of the display device (4), and the PLC controller (10) is electrically connected with the electric push rod (5) and the motor (17) respectively.
8. Multipurpose adjustable economic management teaching demonstration apparatus according to claim 1 characterized in that said demonstration apparatus (4) is driven by a motor (17) to move up and down through a first gear (15) and a second gear (14).
9. The multipurpose adjustable economic management teaching display device according to claim 7, wherein the PLC controller (10) is internally provided with an antenna and a power supply module, and the PLC controller (10) is provided with a control panel, keys and an indicator light; the power supply module comprises a power supply circuit, the power supply circuit comprises an integrated circuit, a capacitor, a first resistor, a second resistor, a third resistor, an adjustable resistor and a voltage regulator tube, the model of the integrated circuit is BG602, the second end of the integrated circuit is connected with the third end of the integrated circuit, the third end of the integrated circuit is connected with the cathode of a voltage-stabilizing tube through a first resistor, the anode of the voltage-stabilizing tube is grounded, the fourth end of the integrated circuit is grounded, the seventh end of the integrated circuit is connected with the sixth end of the integrated circuit through a capacitor, the sixth end of the integrated circuit is respectively connected with the adjustable resistor and the third resistor, the eighth end of the integrated circuit is respectively connected with the second resistor and the adjustable resistor, the first end of the integrated circuit is connected with the eighth end of the integrated circuit through the second resistor, and the eighth end of the integrated circuit is grounded through a series circuit formed by the adjustable resistor and the third resistor.
10. The multipurpose adjustable economic management teaching demonstration device according to claim 1 wherein the electric push rod (5) is an NH32-900 electric push rod.
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| CN202010105426.9A CN111292565A (en) | 2020-02-20 | 2020-02-20 | Multipurpose adjustable economic management teaching display device |
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| CN202010105426.9A CN111292565A (en) | 2020-02-20 | 2020-02-20 | Multipurpose adjustable economic management teaching display device |
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| CN112767833A (en) * | 2020-12-29 | 2021-05-07 | 衡阳师范学院 | Data presentation device of economy statistics |
| CN114758574A (en) * | 2022-05-24 | 2022-07-15 | 沈阳航空航天大学 | Mechanical engineering transmission device |
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