CN214504765U - Digital system conversion demonstration device - Google Patents
Digital system conversion demonstration device Download PDFInfo
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- CN214504765U CN214504765U CN202120150073.4U CN202120150073U CN214504765U CN 214504765 U CN214504765 U CN 214504765U CN 202120150073 U CN202120150073 U CN 202120150073U CN 214504765 U CN214504765 U CN 214504765U
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Abstract
The utility model discloses a digital conversion presentation device. The method comprises the following steps: the system comprises a minimum system 1 of the singlechip, a power terminal 2, a one-bit nixie tube 3, a two-bit nixie tube 4 and a four-bit nixie tube 5. In the using process, 16 groups of binary digits from 0 to 15 are generated according to the internal counter of the minimum system 1 of the single chip microcomputer in a circulating mode, the binary counting result is sent into the four-digit nixie tube 5 to be dynamically displayed, the decimal counting result is sent into the two-digit nixie tube 4 to be dynamically displayed, the hexadecimal counting result is sent into the one-digit nixie tube 3 to be statically displayed, and the number system conversion demonstration device can be applied to classroom teaching of a digital circuit and increases the understanding of students on number system conversion among the binary system, the decimal system and the hexadecimal system.
Description
Technical Field
The utility model belongs to the technical field of the electron, a system of numbers conversion presentation device is related to.
Background
The nixie tube is a semiconductor light-emitting device, and the basic unit of the nixie tube is a light-emitting diode. The nixie tube is actually formed by forming an 8-shaped seven luminous tubes, and the number of the added decimal points is 8. These segments are denoted by a, b, c, d, e, f, g, dp, respectively.
The digital tube is required to display normally, each segment code of the digital tube is required to be driven by a driving circuit so as to display required numbers, and therefore, the digital tube can be divided into a static type and a dynamic type according to different driving modes of the digital tube.
Static drive is also referred to as dc drive. The static driving means that each segment code of each nixie tube is driven by an I/O port of a single chip microcomputer or is driven by decoding of a binary-decimal decoder such as a BCD code. The static driving has the advantages of simple programming and high display brightness, and has the disadvantage of occupying more I/O ports, for example, 5 × 8 to 40I/O ports are required for driving 5 digital tube static displays, only 32I/O ports available for an 89S51 single chip microcomputer are required, a decoding driver must be added for driving in practical application, and the complexity of a hardware circuit is increased.
The dynamic display driving interface of the nixie tube is one of the most widely applied display modes in the single chip microcomputer, the dynamic driving is to connect the homonymous ends of 8 display strokes 'a, b, c, d, e, f, g and dp' of all the nixie tubes together, in addition, a bit gating control circuit is added to the common pole of each nixie tube, the bit gating is controlled by independent I/O lines, when the single chip microcomputer outputs the character codes, all the nixie tubes receive the same character codes, but which nixie tube can display the character pattern, depending on the control of the single chip microcomputer to the bit gating circuit, so that as long as the gating control of the nixie tube needing to be displayed is turned on, the bit can display the character pattern, and the nixie tube which is not gated can not be lighted. The bit gating end of each nixie tube is controlled in turn by time division, so that each nixie tube is controlled and displayed in turn, and dynamic driving is realized.
A single-chip microcomputer, which is a typical embedded Microcontroller (Microcontroller Unit) for short, is usually indicated by an english alphabet, namely MCU, and is used in the industrial control field for the first time. At present, the single chip microcomputer permeates into various fields of our life, and the trace of the single chip microcomputer in which field is not available is hardly found. The single chip microcomputer is operated by a program and can be modified. The technical personnel in the field can realize different functions through different programs without creative labor, and through the programs, the single chip microcomputer can conveniently control the lighting of the LED lamp and the nixie tube and the rotating speed of the motor, and various random numbers can be conveniently generated and operated. The high intelligence, the high efficiency and the high reliability of the product can be realized through the program.
Disclosure of Invention
An object of the utility model is to design a simple structure, convenient to use, low in cost's digital system conversion presentation device, can be applied to digital circuit's classroom teaching, increase the student to binary system, decimal system, the understanding of digital system conversion between the hexadecimal system.
In order to achieve the above object, the utility model discloses a singlechip minimum system 1, power supply terminal 2, one digit charactron 3, two-digit charactron 4, four-digit charactron 5, characterized by: the minimum system 1 of the singlechip, the power terminal 2, the one-bit nixie tube 3, the two-bit nixie tube 4 and the four-bit nixie tube 5 are all welded on the circuit board;
the single-chip microcomputer minimum system 1 comprises a single-chip microcomputer, a P0 port pull-up resistor, a clock circuit and a reset circuit, wherein the single-chip microcomputer of the single-chip microcomputer minimum system 1 is provided with 40 pins;
the power supply terminal 2 outputs a 5-volt direct-current power supply, the anode of the power supply terminal is connected with 40 pins of the singlechip in the singlechip minimum system 1, and the cathode of the power supply terminal is connected with 20 pins of the singlechip in the singlechip minimum system 1;
the one-bit nixie tube 3 is a one-bit common-cathode nixie tube and is provided with 10 pins, 5 pins and 8 pins of the one-bit common-cathode nixie tube are suspended, the 3 pin is connected with the cathode of the power terminal 2 after being connected with a resistor in series, and 7 pins, 6 pins, 4 pins, 2 pins, 1 pin, 9 pin and 10 pin of the one-bit nixie tube are respectively connected with 1 pin, 2 pin, 3 pin, 4 pin, 5 pin, 6 pin and 7 pin of a single chip in the minimum system 1 of the single chip;
the two-bit nixie tube 4 is a two-bit common-cathode nixie tube, has 10 pins, 2 pins of the two-bit common-cathode nixie tube are suspended, and 7, 6, 4, 1, 3, 8, 9, 5 and 10 pins are respectively connected with 10, 11, 12, 13, 14, 15, 16, 21 and 22 pins of a singlechip in the minimum system 1 of the singlechip;
the four-digit nixie tube 5 is a four-digit common-cathode nixie tube, has 12 pins, 10 pins of the four-digit common-cathode nixie tube are suspended, and 2, 6, 9, 11, 12, 3, 8, 1, 4, 5 and 7 pins are respectively connected with 39, 38, 37, 36, 35, 34, 33, 25, 26, 27 and 28 pins of a singlechip in the minimum system 1 of the singlechip.
In the using process, 16 groups of binary digits of 0 to 15 are generated according to the circulation of an internal counter of the minimum system 1 of the single chip microcomputer, binary counting results are sent into the four-digit nixie tube 5 through pins 39, 38, 37, 36, 35, 34 and 33 of the single chip microcomputer to be dynamically displayed, pins 25, 26, 27 and 28 of the single chip microcomputer control bit gating ends of 4 nixie tubes in the four-digit nixie tube 5, decimal counting results are sent into the two-digit tube 4 through pins 10, 11, 12, 13, 14, 15 and 16 of the single chip microcomputer to be dynamically displayed, pins 21 and 22 of the single chip microcomputer control bit gating ends of 2 nixie tubes in the two-digit tube 4, and hexadecimal counting results are sent into the one-digit tube 3 through pins 7, 6, 4, 2, 1, 9 and 10 of the single chip microcomputer to be statically displayed.
The utility model discloses single chip computer minimum system 1, power supply terminal 2, one-bit charactron 3, two-bit charactron 4, four-bit charactron 5 are the market purchase product.
In the using process, the technical personnel in the field can realize the conversion of the numerical system through the programming of the single chip microcomputer without creative labor and output the conversion result to the one-digit nixie tube 3, the two-digit nixie tube 4 and the four-digit nixie tube 5 for display.
The utility model discloses an useful part is: the method can be applied to classroom teaching of digital circuits, and improves the understanding of students on the number system conversion among binary system, decimal system and hexadecimal system.
Drawings
FIG. 1 is a circuit diagram of a single chip microcomputer of the digital conversion demonstration device;
FIG. 2 is a circuit diagram of a digital tube of the digital conversion demonstration device;
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings.
Referring to fig. 1, a single chip circuit diagram of a digital conversion demonstration device, the digital conversion demonstration device comprises a single chip minimum system 1, a power terminal 2, a one-bit nixie tube 3, a two-bit nixie tube 4 and a four-bit nixie tube 5, and is characterized in that: the minimum system 1 of the singlechip, the power terminal 2, the one-bit nixie tube 3, the two-bit nixie tube 4 and the four-bit nixie tube 5 are all welded on the circuit board;
the single-chip microcomputer minimum system 1 comprises a single-chip microcomputer, a P0 port pull-up resistor, a clock circuit and a reset circuit, wherein the single-chip microcomputer of the single-chip microcomputer minimum system 1 is provided with 40 pins;
the power supply terminal 2 outputs a 5-volt direct-current power supply, the anode of the power supply terminal is connected with 40 pins of the singlechip in the singlechip minimum system 1, and the cathode of the power supply terminal is connected with 20 pins of the singlechip in the singlechip minimum system 1;
referring to the digital tube circuit diagram of the digital system conversion demonstration device of fig. 2, the one-bit digital tube 3 is a one-bit common-cathode digital tube, and has 10 pins, 5 and 8 pins of which are suspended, 3 pin is connected with the negative pole of the power terminal 2 after being connected with a resistor in series, and 7, 6, 4, 2, 1, 9 and 10 pins of which are respectively connected with 1, 2, 3, 4, 5, 6 and 7 pins of a single chip in the minimum system 1 of the single chip;
the two-bit nixie tube 4 is a two-bit common-cathode nixie tube, has 10 pins, 2 pins of the two-bit common-cathode nixie tube are suspended, and 7, 6, 4, 1, 3, 8, 9, 5 and 10 pins are respectively connected with 10, 11, 12, 13, 14, 15, 16, 21 and 22 pins of a singlechip in the minimum system 1 of the singlechip;
the four-digit nixie tube 5 is a four-digit common-cathode nixie tube, has 12 pins, 10 pins of the four-digit common-cathode nixie tube are suspended, and 2, 6, 9, 11, 12, 3, 8, 1, 4, 5 and 7 pins are respectively connected with 39, 38, 37, 36, 35, 34, 33, 25, 26, 27 and 28 pins of a singlechip in the minimum system 1 of the singlechip.
In the using process, 16 groups of binary digits of 0 to 15 are generated according to the circulation of an internal counter of the minimum system 1 of the single chip microcomputer, binary counting results are sent into the four-digit nixie tube 5 through pins 39, 38, 37, 36, 35, 34 and 33 of the single chip microcomputer to be dynamically displayed, pins 25, 26, 27 and 28 of the single chip microcomputer control bit gating ends of 4 nixie tubes in the four-digit nixie tube 5, decimal counting results are sent into the two-digit tube 4 through pins 10, 11, 12, 13, 14, 15 and 16 of the single chip microcomputer to be dynamically displayed, pins 21 and 22 of the single chip microcomputer control bit gating ends of 2 nixie tubes in the two-digit tube 4, and hexadecimal counting results are sent into the one-digit tube 3 through pins 7, 6, 4, 2, 1, 9 and 10 of the single chip microcomputer to be statically displayed.
The utility model discloses single chip computer minimum system 1, power supply terminal 2, one-bit charactron 3, two-bit charactron 4, four-bit charactron 5 are the market purchase product.
In the using process, the technical personnel in the field can realize the conversion of the numerical system through the programming of the single chip microcomputer without creative labor and output the conversion result to the one-digit nixie tube 3, the two-digit nixie tube 4 and the four-digit nixie tube 5 for display.
The utility model discloses an useful part is: the method can be applied to classroom teaching of digital circuits, and improves the understanding of students on the number system conversion among binary system, decimal system and hexadecimal system.
Claims (1)
1. Digital system conversion presentation device, its characterized in that: the numerical system conversion demonstration device consists of a singlechip minimum system (1), a power terminal (2), a one-bit nixie tube (3), a two-bit nixie tube (4) and a four-bit nixie tube (5), wherein the singlechip minimum system (1), the power terminal (2), the one-bit nixie tube (3), the two-bit nixie tube (4) and the four-bit nixie tube (5) are all welded on a circuit board;
the single-chip microcomputer minimum system (1) comprises a single-chip microcomputer, a P0 port pull-up resistor, a clock circuit and a reset circuit, wherein the single-chip microcomputer of the single-chip microcomputer minimum system (1) is provided with 40 pins;
the power supply terminal (2) outputs a 5-volt direct-current power supply, the anode of the power supply terminal is connected with 40 pins of the singlechip in the minimum system (1) of the singlechip, and the cathode of the power supply terminal is connected with 20 pins of the singlechip in the minimum system (1) of the singlechip;
the one-bit nixie tube (3) is a one-bit common-cathode nixie tube, and is provided with 10 pins, 5 pins and 8 pins of the one-bit nixie tube are suspended, 3 pins are connected with a resistor in series and then connected with the negative electrode of the power terminal (2), and 7 pins, 6 pins, 4 pins, 2 pins, 1 pin, 9 pins and 10 pins of the one-bit nixie tube are respectively connected with 1 pin, 2 pin, 3 pin, 4 pin, 5 pin, 6 pin and 7 pin of a singlechip in the minimum system (1) of the singlechip;
the two-bit nixie tube (4) is a two-bit common-cathode nixie tube, has 10 pins, 2 pins of the two-bit common-cathode nixie tube are suspended, and 7, 6, 4, 1, 3, 8, 9, 5 and 10 pins are respectively connected with 10, 11, 12, 13, 14, 15, 16, 21 and 22 pins of a singlechip in the minimum system (1) of the singlechip;
the four-digit nixie tube (5) is a four-digit common-cathode nixie tube, has 12 pins, 10 pins of the four-digit common-cathode nixie tube are suspended, and the 2, 6, 9, 11, 12, 3, 8, 1, 4, 5 and 7 pins are respectively connected with 39, 38, 37, 36, 35, 34, 33, 25, 26, 27 and 28 pins of a singlechip in the minimum system (1) of the singlechip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120150073.4U CN214504765U (en) | 2021-01-14 | 2021-01-14 | Digital system conversion demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120150073.4U CN214504765U (en) | 2021-01-14 | 2021-01-14 | Digital system conversion demonstration device |
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| Publication Number | Publication Date |
|---|---|
| CN214504765U true CN214504765U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120150073.4U Expired - Fee Related CN214504765U (en) | 2021-01-14 | 2021-01-14 | Digital system conversion demonstration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114743445A (en) * | 2022-05-19 | 2022-07-12 | 杭州企茏电子科技有限公司 | Spliced A/D and system conversion demonstration system |
-
2021
- 2021-01-14 CN CN202120150073.4U patent/CN214504765U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114743445A (en) * | 2022-05-19 | 2022-07-12 | 杭州企茏电子科技有限公司 | Spliced A/D and system conversion demonstration system |
| CN114743445B (en) * | 2022-05-19 | 2024-04-05 | 杭州企茏电子科技有限公司 | Spliced A/D and system conversion demonstration system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211026 |