CN202171892U - Teaching platform for digital system design - Google Patents
Teaching platform for digital system design Download PDFInfo
- Publication number
- CN202171892U CN202171892U CN2011202934351U CN201120293435U CN202171892U CN 202171892 U CN202171892 U CN 202171892U CN 2011202934351 U CN2011202934351 U CN 2011202934351U CN 201120293435 U CN201120293435 U CN 201120293435U CN 202171892 U CN202171892 U CN 202171892U
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- input
- center processor
- digital system
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Instructional Devices (AREA)
Abstract
The utility model discloses a teaching platform for a digital system design, wherein a central processing unit CPU is a CPLD (complex programmable logic device) chip and/or a single-chip chip; the pins of the CPU are connected with a power supply module, an AD/DA (analogue-digital/digital-analogue) conversion circuit and a communication circuit via a PCB (printed circuit board) respectively; the CPU is further connected with the input interface circuit and the output drive circuit of each signal via the PCB respectively; each input interface circuit and each output drive circuit are connected with corresponding plug-and-socket holes on a panel; and the communication circuit is connected with a USB (universal serial bus) interface. The input interface circuit is a key input circuit, a dial switch input circuit, a timing circuit, a temperature acquisition circuit etc. The output signal drive circuit comprises the drive circuits of a nixie tube, a light-emitting diode, a dot matrix, a liquid crystal screen, a stepper motor, a buzzer etc. Each assembly is connected with the CPU via the plug-and-socket hole. The pins of the CPU, as well as the input and output ends of each input circuit and each output circuit are connected with each test point on the panel respectively. While using, a program is compiled on a computer and downloaded on the CPU of the platform, and the needed input and output components are plugged, then a plurality of digital system experiments can be performed. One platform is multipurpose, simple in structure, and low in cost.
Description
(1) technical field
The utility model relates to electronic technical experiment teaching device field, is specially a kind of Design of Digital System teaching platform.
(2) background technology
With the digital signal completion circuit that digital quantity carries out arithmetical operation and logical operation is called digital circuit, or digital display circuit.Because it has logical operation and logical process function, so claim DLC(digital logic circuit) again.
The teaching of digital display circuit is if teacher's class demonstration, and the student is a master mode to listen, and is difficult to let the student really be familiar with PLD, also is difficult to learn the design of various mathematics circuit.But, the experimental box of conventional digital system is very big and heavy; Various singlechip chips, display circuit, driving circuit and power supply etc. all need connect with lead during experiment one by one, and wiring is complicated, the student often spends most of the time on hardware connection; Can not mainly be placed on energy in the design of logical operation and logical process of digital display circuit; And because of line etc., make hardware aspect be easy to go wrong, the student can't in time find circuit design defective place.
The single-chip microcomputer of existing digital display circuit experimental box or the chip of processor; Basically only is furnished with the parallel port as Data Input Interface; And the output terminal of present computer seldom adopts parallel interface; Make experimental box difficult, be connected also very difficult with the memory device of the USB interface that the most generally adopts now with being connected of computer.
Existing in addition every kind of experimental box can only be applicable to a kind of Design of Digital System course; The course of relevant digital display circuit has DLC(digital logic circuit); Electric design automation (EDA), single-chip microcomputer application, intelligence instrument and system controlled by computer etc. need configure dedicated experimental box one by one.Various experimental box unit prices in the market are generally several thousand yuan, and the experimental box total price of number subject is just more considerable.Be difficult to let each student oneself a experimental box arranged on laboratory as development platform; Such experiment course can't mobilizing students subjective initiative; Still be difficult to change the state of passive learning; Influence students experience and grasp advanced Design of Digital System, also be unfavorable for cultivating students'independent innovation ability and manipulative ability.
(3) utility model content
The purpose of the utility model is a kind of Design of Digital System teaching platform of design; Wherein contain CPLD chip and singlechip chip; And be furnished with digital-to-analogue, analog to digital conversion circuit and display circuit and multiple input circuit; All be connected on the printed circuit board (PCB), can be used for carrying out Design of Digital System.
The Design of Digital System teaching platform of the utility model design comprises center processor and the power module that is attached thereto, printed circuit board (PCB), modular connector hole; Center processor is CPLD chip (CPLD chip) and/or singlechip chip, and center processor also is connected to A/D convertor circuit, DA change-over circuit, telecommunication circuit.The relevant pin of center processor is respectively through printed circuit board (PCB) and power module; A/D convertor circuit; The DA change-over circuit; Telecommunication circuit connects, and a plurality of signal input pins of center processor also connect each signal input interface circuit through printed circuit board (PCB), and each input interface circuit connects the input module spliced eye on the panel.A plurality of output pins of center processor also connect each output driving circuit through printed circuit board (PCB), and each output driving circuit connects the output driver part spliced eye on the panel; Telecommunication circuit is connected to USB interface, also serial line interface can be arranged.
The input end of the relevant pin of each of CPLD chip and/or singlechip chip, each input interface circuit, the output terminal of each output driving circuit connect each test point that is on the panel respectively.
Can work out the program of CPLD chip and/or single-chip microcomputer during use on computers, download to the center processor of this teaching platform through serial line interface or USB interface.The required input module of wired program on the relevant input module spliced eye of this teaching platform; The required procedure result driver part of wired program on output interface just can carry out the experimental implementation of DLC(digital logic circuit), electronics Aided Design (EDA) technology and courses such as application, Fundamentals of Mono-Chip Computers & Applications, intelligence instrument course and system controlled by computer principle thereof.
The input interface circuit that the center processor of this teaching platform connects is one or more in button inputting circuits, toggle switch input circuit, timing circuit and the temperature collection circuit.Also can insert other input interface circuit as required.
Button inputting circuits connects the button assembly spliced eye on the panel, and the button assembly of on the button assembly spliced eye, pegging graft can be selected program or the interior data of update routine in the center processor through button.
The toggle switch input circuit connects the toggle switch assembly spliced eye on the panel, and grafting toggle switch assembly on the toggle switch spliced eye can be selected program or the interior data of update routine in the center processor through toggle switch.
Temperature collection circuit connects the temperature sensor spliced eye on the panel, and the temperature sensor of on the temperature sensor spliced eye, pegging graft can be through temperature sensor to center processor input temp signal.
Timing circuit connects the timing circuit chip inserted hole on the panel, and grafting timing circuit chip on timing circuit chip inserted hole can be through the timing circuit chip to center processor signal input time.
The output signal driver circuit that the center processor of this teaching platform is connected to is one or more in charactron driving circuit, circuit of LED, dot matrix circuit, liquid crystal display display circuit, stepper motor driving circuit and the buzzer drive circuit.Also can insert other output signal driver circuit as required.
The charactron driving circuit connects the charactron spliced eye on the panel, the charactron of on the charactron spliced eye, pegging graft, can be on charactron behind the center processor sequential operation display routine operation result.
Circuit of LED connects the light-emitting diode component spliced eye on the panel, the light-emitting diode component of on the light-emitting diode component spliced eye, pegging graft, can be on light emitting diode behind the center processor sequential operation display routine operation result.
The dot matrix circuit connects the dot matrix modular connector hole on the panel, grafting dot matrix assembly on dot matrix modular connector hole, can be on dot matrix behind the center processor sequential operation display routine operation result.
The liquid crystal display display circuit connects the liquid crystal display modular connector hole on the panel, grafting liquid crystal display assembly on liquid crystal display modular connector hole, can be on liquid crystal display behind the center processor sequential operation display routine operation result.
Stepper motor driving circuit connects the stepper motor spliced eye on the panel, and the stepper motor of on the stepper motor spliced eye, pegging graft can the follow procedure drive stepping motor behind the center processor sequential operation.
Buzzer drive circuit connects the hummer spliced eye on the panel, and the hummer of on the hummer spliced eye, pegging graft can drive the hummer sounding by follow procedure behind the center processor sequential operation.
The advantage of the utility model Design of Digital System teaching platform is: 1, combine DLC(digital logic circuit), EDA technology and application, the required parts of curriculum experiment such as Fundamentals of Mono-Chip Computers & Applications, intelligence instrument and system controlled by computer principle; Realize the many usefulness of a platform, the teaching demonstration on the classroom can be provided, also can let the student carry out the experiment of various logic circuitry project curriculum, also can be used as the basic platform of Electronic Design Competition; 2, adopt USB interface or serial line interface to download, the defective of having avoided the conventional one-piece machine to download with parallel port or serial ports; 3, CPLD chip and singlechip chip constitute standalone module and shared mainboard; Each input module all can patch at the plug receptacle of panel with the output driver part, has saved the time that the student spends on hardware connection, tempers the ability of Design of Digital Circuit better; Experience the function of PLD; Also can on panel, each key point to circuit directly test, be convenient to operation, easily-learned easily mastered; Compare with each digital display circuit experiment porch in the past, on the teaching means or teaching efficiency all improve a lot; 4, simple in structure, cost is low, and price is hundreds of unit only, is convenient to school's laboratory adapted, realizes that each student on the laboratory has oneself a development platform, helps the cultivation of the capability of independent innovation.
(4) description of drawings
Fig. 1 is the structural representation of given figure type families system designed teaching platform embodiment.
(5) embodiment
Embodiment is as shown in Figure 1 for given figure type families system designed teaching platform, and CPLD chip (CPLD chip) and singlechip chip constitute center processor, and this routine CPLD chip is MAXII_EPM240, and singlechip chip is 89S52.The relevant pin of center processor is welded on the printed circuit board (PCB), through P.e.c. and power module, and A/D convertor circuit, the DA change-over circuit, telecommunication circuit connects.Telecommunication circuit is connected to USB interface and serial line interface.The signal input pin of center processor connects button inputting circuits, toggle switch input circuit, timing circuit and temperature collection circuit through printed circuit board (PCB) respectively, and each circuit connects button assembly spliced eye, toggle switch assembly spliced eye, timing circuit chip inserted hole and the temperature sensor spliced eye on the panel respectively.A plurality of signal output pins of center processor connect LCDs driving circuit, charactron driving circuit, circuit of LED, dot matrix circuit, stepper motor driving circuit and buzzer drive circuit through printed circuit board (PCB) respectively.Each circuit connects liquid crystal display modular connector hole, charactron modular connector hole, light-emitting diode component spliced eye, dot matrix modular connector hole, stepper motor spliced eye and hummer spliced eye through printed circuit board (PCB) respectively.
Each signal input interface circuit also can be integrated in the corresponding input module, and center processor directly connects corresponding input module spliced eye.This routine center processor directly connects timing chip inserted hole, contains timing circuit in the used timing chip.
Each output driving circuit also can be integrated in the corresponding output driver part, and center processor directly connects corresponding output driver part spliced eye.This routine circuit of LED directly connects liquid crystal display modular connector hole, dot matrix modular connector hole, light-emitting diode component spliced eye.Used liquid crystal display assembly is integrated with the liquid crystal display display circuit, and the dot matrix assembly is integrated with the dot matrix circuit, and light-emitting diode component is integrated with circuit of LED.
The input end of the relevant pin of each of CPLD chip and singlechip chip, each input interface circuit, the output of each output driving circuit are connected each test point that is on the panel respectively.
Power switch, button assembly spliced eye, toggle switch assembly spliced eye, temperature sensor spliced eye, charactron modular connector hole, light emitting diode (LED) modular connector hole, dot matrix modular connector hole, liquid crystal display modular connector hole, stepper motor spliced eye, hummer spliced eye are installed on the panel of this teaching platform.
The telecommunication circuit of the connection of center processor, A/D convertor circuit, DA change-over circuit also can be made into plug-in assembly, and corresponding spliced eye is set on panel, the experimental corresponding circuit unit of pegging graft that needs.
Each spliced eye also can be used as the test point of corresponding assembly.
Instance in the enterprising line of numbers system design experiment of this teaching platform is following:
1. based on the Experiment on Digital Logic Circuits of PLD
Utilize verilog language corresponding program on computers, compiling, emulation are provided with each input and output pin of required chip and center processor; Download to this routine teaching platform with USB; Grafting charactron and button assembly, the energized module is imported with button; Observe charactron output result, and detect the signal voltage of output in charactron output test point.
2. 3 people's voting machines design of EDA technology and application thereof realizes
Utilize tradition small-scale digit-logic circuit chip to build one 3 people's voting machine circuit on computers, compiling, emulation are downloaded and are observed the input and output result.
Perhaps, utilize verilog language 3 people's voting machine programs on computers, compiling, emulation; Input pin and an output pin of the center processor of required chip, configuration three people's voting machines are set; Download to this routine teaching platform with USB, grafting light emitting diode and toggle switch assembly, energized module; With three toggle switch inputs, observe light emitting diode output result.
3. the running lamp of Fundamentals of Mono-Chip Computers & Applications course experiment
Write the running lamp program on computers, download in this routine teaching platform singlechip chip the running status of observing grafting light-emitting diode component on this teaching platform through USB.
4. the experiment of the voltage measurement in the intelligence instrument course
Utilize modulus switching device ADC0809 to gather analog voltage amount, convert digital quantity to, handle charactron by single-chip microcomputer and show output; The variation that changes the input terminal voltage of ADC0809 is observed the variation of charactron output demonstration and is utilized the multimeter correction value output, improves the accuracy of output.
5. the experiment of the step motor control in the system controlled by computer principle course
Write the step motor control program on computers, download in this routine teaching platform singlechip chip, through button assembly control step rotating speed of motor and rotation direction through USB.
Given figure type families systems teaching platform respectively operate jack and signal testing point all is installed on the panel, can be correlated with easily and impart knowledge to students and experimental real-training work.
The foregoing description is merely concrete example of purpose, technical scheme and beneficial effect further explain to the utility model, and the utility model is not to be defined in this.All any modifications of within the scope of disclosure of the utility model, being made, be equal to replacement, improvement etc., all be included within the protection domain of the utility model.
Claims (7)
1. the Design of Digital System teaching platform comprises center processor and the power module that is attached thereto, printed circuit board (PCB), modular connector hole; It is characterized in that:
Center processor is CPLD chip and/or singlechip chip;
Center processor is connected to power module; Telecommunication circuit, A/D convertor circuit, DA change-over circuit; A plurality of signal input pins of center processor also connect each signal input interface circuit through printed circuit board (PCB), and each input interface circuit connects the input module spliced eye on the panel; A plurality of output pins of center processor connect each output driving circuit through printed circuit board (PCB), and each output driving circuit connects the output driver part spliced eye on the panel; Telecommunication circuit is connected to USB interface.
2. Design of Digital System teaching platform according to claim 1 is characterized in that:
The output terminal of each relevant pin of said CPLD chip and/or singlechip chip, the input end of each input interface circuit, each output driving circuit connects each test point that is on the panel respectively.
3. Design of Digital System teaching platform according to claim 1 is characterized in that:
Said telecommunication circuit also is connected to serial line interface.
4. according to each described Design of Digital System teaching platform in the claim 1 to 3, it is characterized in that:
The input interface circuit that said center processor connects is one or more in button inputting circuits, toggle switch input circuit, timing circuit and the temperature collection circuit.
5. according to each described Design of Digital System teaching platform in the claim 1 to 3, it is characterized in that:
The output signal driver circuit that said center processor is connected to is one or more in charactron driving circuit, circuit of LED, dot matrix circuit, liquid crystal display display circuit, stepper motor driving circuit and the buzzer drive circuit.
6. Design of Digital System teaching platform according to claim 1 is characterized in that:
Said each signal input interface circuit is integrated in the corresponding input module, and center processor directly connects corresponding input module spliced eye.
7. Design of Digital System teaching platform according to claim 1 is characterized in that:
Said each output driving circuit is integrated in the corresponding output driver part, and center processor directly connects corresponding output driver part spliced eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202934351U CN202171892U (en) | 2011-08-12 | 2011-08-12 | Teaching platform for digital system design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202934351U CN202171892U (en) | 2011-08-12 | 2011-08-12 | Teaching platform for digital system design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202171892U true CN202171892U (en) | 2012-03-21 |
Family
ID=45830083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202934351U Expired - Fee Related CN202171892U (en) | 2011-08-12 | 2011-08-12 | Teaching platform for digital system design |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202171892U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014113906A1 (en) * | 2013-01-23 | 2014-07-31 | Li Min | Eda technology-based single-chip microcomputer system |
| CN107038941A (en) * | 2017-06-16 | 2017-08-11 | 哈尔滨工业大学 | A kind of portable electronic Platform of Experimental Teaching |
| CN107221226A (en) * | 2017-06-12 | 2017-09-29 | 韩端科技（深圳）有限公司 | Teaching programing system |
| CN111461940A (en) * | 2020-05-31 | 2020-07-28 | 桂林电子科技大学信息科技学院 | Virtual-real combined teaching platform based on Arduino |
-
2011
- 2011-08-12 CN CN2011202934351U patent/CN202171892U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014113906A1 (en) * | 2013-01-23 | 2014-07-31 | Li Min | Eda technology-based single-chip microcomputer system |
| CN107221226A (en) * | 2017-06-12 | 2017-09-29 | 韩端科技（深圳）有限公司 | Teaching programing system |
| CN107038941A (en) * | 2017-06-16 | 2017-08-11 | 哈尔滨工业大学 | A kind of portable electronic Platform of Experimental Teaching |
| CN111461940A (en) * | 2020-05-31 | 2020-07-28 | 桂林电子科技大学信息科技学院 | Virtual-real combined teaching platform based on Arduino |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204288623U (en) | A kind of multifunction electronic experiment integrated board | |
| CN202171892U (en) | Teaching platform for digital system design | |
| CN101281697A (en) | Multifunctional single-chip experimental development plate | |
| CN101989390A (en) | Multi-core embedded type teaching and scientific research platform | |
| CN201100900Y (en) | Built-in system teaching instrument based on programmable system chip | |
| CN204348194U (en) | A kind of single-chip microcomputer and experimental panel for programmable logic device | |
| CN201069618Y (en) | PLC simulation teaching device | |
| CN201402549Y (en) | Computer system design teaching experimental board | |
| CN217306014U (en) | Non-code hand-held programming device | |
| CN202268115U (en) | Portable dual-platform digital logic experiment device | |
| CN2935326Y (en) | Electricity teaching integrated experiment box | |
| CN202171889U (en) | Portable universal CPLD/FPGA teaching experimental instrument | |
| CN202871158U (en) | Experiment teaching and development board for one-chip microcomputers | |
| CN202650370U (en) | Design and teaching platform for embedded system | |
| CN203085040U (en) | Singlechip learning development plate | |
| CN202258050U (en) | Novel digital electronic technology and single chip comprehensive experiment box | |
| CN104361801A (en) | Portable integrated PLC experimental box | |
| KR20020095619A (en) | ASIC design trainer | |
| CN202049659U (en) | Teaching experimental instrument for single chip microcomputers | |
| Abdrakhmanov et al. | Development of low-cost electronic training boards based on universal microcontroller | |
| CN2555547Y (en) | Opening mono chip processor tester | |
| Ali et al. | Module-based Edukit for teaching and learning 8051 microcontroller programming | |
| Li et al. | Make experimental device to be a toy-the experimental teaching in digital logic circuit course | |
| CN204331390U (en) | A kind of microcontroller experiment porch | |
| CN218481900U (en) | Extensible Internet of things teaching development board supporting learning real-time monitoring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20120812 |