CN113129712A - Logic training development board - Google Patents
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- CN113129712A CN113129712A CN202110279068.8A CN202110279068A CN113129712A CN 113129712 A CN113129712 A CN 113129712A CN 202110279068 A CN202110279068 A CN 202110279068A CN 113129712 A CN113129712 A CN 113129712A
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- 238000011161 development Methods 0.000 title claims abstract description 36
- 238000012549 training Methods 0.000 title claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 16
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000007717 exclusion Effects 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 4
- 230000018109 developmental process Effects 0.000 description 22
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
- G09B23/186—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits for digital electronics; for computers, e.g. microprocessors
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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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Abstract
The invention discloses a logic training development board, which relates to the field of development boards and aims to solve the problem that an embedded development board used by learners is not flexible, convenient and simple enough, and comprises a single chip microcomputer chip, a liquid crystal display screen, a clock module, a driving load, a pull-up resistor, a communication module and a key group, wherein the single chip microcomputer chip can be used for loading programs and realizing a main control function, the clock module provides clock signals for a system, the driving module is used for driving the connected driving load, the pull-up resistor is used for raising a level to a high level, the communication module is used for data transmission, the key group is used for providing a key control function, and the liquid crystal display screen, the clock module, the driving module, the pull-up resistor, the communication module and the key group are respectively connected to; the signal output port of the driving module is connected with the input end of the driving load, and the power supply end of the driving load is connected with the driving power supply, so that the development board which is convenient to use, easy to carry and simple in structure is realized.
Description
Technical Field
The invention relates to the field of development boards, in particular to a logic training development board.
Background
The embedded system is composed of hardware and software and is a device capable of operating independently. The software content of the software only comprises a software running environment and an operating system thereof. The hardware content includes various contents including a signal processor, a memory, a communication module, and the like. Compared with a general computer processing system, the embedded system has larger difference, and cannot realize the large-capacity storage function because no matched large-capacity medium exists, most of the adopted storage media comprise E-PROM, EEPROM DENG and the like, and the software part takes an API (application programming interface) as the core of a development platform.
The embedded system development needs to select the CPU, FPGA and DSP with the model required by the development and then select the development board range supporting the selected chip according to the CPU, FPGA, DSP and the like with the selected model. Again, the ability and level of development environment and technical support provided by the development board is preferred. Finally, it is considered that the development board needs to integrate the CPU, the FPGA, the DSP, and the like, and also needs to have a more perfect input and output interface, such as a keyboard and an LCD, a program downloading interface, a memory, a FlashROM, a power module, and the like. Meanwhile, in order to develop the initial debugging convenience, a plurality of special pins such as JTAG interfaces, USB, serial ports and the like can be led out for the use of an external debugging module. Beginners typically learn embedded systems through development boards.
A development board is a circuit board that typically includes electrical components such as processors, buses, memory, and communication modules, and is commonly used for the development of embedded systems. Generally, the development board is designed and assembled by an embedded system developer according to requirements, and provides a learning reference tool for embedded system beginners.
In order to facilitate the use, research and learning of beginners, the simplified system kernel and algorithm, and the lower power consumption and software and hardware cost are the inevitable development trend of development boards, and it is important to provide a development board which is easy to assemble, easy to carry, convenient to edit and simple to operate.
Disclosure of Invention
The invention discloses a logic training development board, and aims to provide a development board which is convenient to use, easy to carry and simple in structure.
In order to solve the problems, the invention adopts the following technical scheme:
a logic training development board comprises a single chip microcomputer chip, a liquid crystal display screen, a clock module, a driving load, a pull-up resistor, a communication module and a key group;
the liquid crystal display screen, the clock module, the driving module, the pull-up resistor, the communication module and the key group are respectively connected to the single chip microcomputer chip;
the signal output port of the driving module is connected with the input end of the driving load, and the power supply end of the driving load is connected with a driving power supply.
Preferably, the pull-up resistor employs exclusion.
Preferably, the size of the exclusion is a 103J.
Preferably, the single chip microcomputer chip adopts a chip with model number STC89C 51.
Preferably, the clock module adopts a chip with a model number of DS 1302.
Preferably, the driving module adopts a composite transistor array with the model number of ULN 2003.
Preferably, the driving load includes an LED indicator, a speaker and a relay control circuit.
Preferably, the relay control circuit comprises a relay, a diode and a controlled load, the diode is connected with a coil of the relay in parallel, an anode of the diode is connected with the signal output port of the driving module, a cathode of the diode is connected with a driving power supply, and two ends of a switch of the relay are connected with the controlled load.
Preferably, the communication module comprises an RS232 interface and an RS485 interface.
Preferably, the model of the liquid crystal display screen is selected as the LCD 1602.
The invention has simple structure, high integration level and convenient carrying; meanwhile, the program development and editing are simple and convenient, and the learner can conveniently edit and use the program; the model of the clock chip is selected from the DS1302, and the clock chip is low in power consumption, high in precision and has a leap year compensation function; the composite transistor array is adopted as a driving module, the application range is wide, and driving loads such as a relay and an LED lamp can be driven; the master control chip adopts an STC89C51 single chip microcomputer chip, so that the compatibility is strong, and the programming is convenient; adopt LCD1602 liquid crystal display, with low costs, and simple to operate can be directly with the display screen installation on the board.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the connection of the relay control circuit of the present invention;
FIG. 3 is a schematic view of the connection of embodiment 1,
wherein, D1-diode, K1-relay.
Detailed Description
Referring to fig. 1, a logic training development board includes a single chip, a liquid crystal display, a clock module, a driving load, a pull-up resistor, a communication module, and a keypad.
It should be noted that the liquid crystal display, the clock module, the driving module, the pull-up resistor, the communication module and the key group are respectively connected to the single chip; the signal output port of the driving module is connected with the input end of the driving load, and the power supply end of the driving load is connected with a driving power supply.
The pull-up resistor can adopt a resistor array, and the type of the resistor array is preferably A103J; the singlechip chip preferably adopts a chip with the model of STC89C 51; the clock module can adopt a clock chip with the model number of DS 1302; the driving module can adopt a composite transistor array with the model number of ULN 2003; the driving load comprises an LED indicator lamp, a loudspeaker and a relay control circuit, wherein the relay control circuit can comprise a relay K1, a diode D1 and a controlled load, a diode D1 is connected with a coil of the relay K1 in parallel, the anode of the diode D1 is connected with a signal output port of the driving module, the cathode of the diode D1 is connected with a driving power supply, and two ends of a switch of the relay K1 are connected with the controlled load.
In addition, the communication module can comprise an RS232 interface and an RS485 interface, and the model of the liquid crystal display screen is preferably selected to be the LCD 1602.
The single chip microcomputer chip provides programmable function for users, learners or teachers of the embedded system can define functional programs by themselves, the liquid crystal display screen is used for displaying visual data, the clock module provides clock logic for the development board, the driving module is used for driving loads, the driving loads are electrical elements for realizing specific functions, such as a relay control circuit for controlling the controlled load to be switched on and off, an LED lamp for displaying state or prompting information and a loudspeaker for making sound, the pull-up resistor raises the level to high level, the communication module is used for data transmission, and the key group provides key control function for users.
It should be noted that, as shown in fig. 2, a connection structure diagram of the relay control circuit is that a diode D1 is connected in parallel with a coil of the relay K1, an anode of the diode D1 is connected to a signal output port of the driving module, a cathode of the diode D1 is connected to the driving power supply, and two ends of a switch of the relay K1 are connected to the controlled load. The output signal of the driving module drives the relay K1, the coil of the relay K1 is electrified, the switch of the relay K1 is adsorbed after the coil of the relay K1 is electrified, the on-off control function of the controlled load is achieved, and the diode D1 can be used for mechanism surge. The controlled load can be automatically accessed according to the requirements of users, and the flexibility is higher.
Example 1
Referring to fig. 3, fig. 3 is a specific connection example of the present invention based on the above connection principle. The connection between the relevant parts of the schematic diagram in this embodiment will be explained below.
Wherein the size of the exclusion is A103J; the single chip microcomputer chip adopts a chip with the model of STC89C 51; the clock module adopts a chip with the model number of DS 1302; the driving module adopts a composite transistor array with the model number of ULN 2003; the driving load comprises an LED indicator light, a loudspeaker and a relay control circuit; the LCD model is selected as LCD 1602.
The P1.2, P1.3 and P1.4 pins of the single chip microcomputer chip are respectively used for connecting SCLK, I/O and RST ports of the clock chip DS1302, and the VCC end of the clock chip DS1302 is connected with a direct current source; pins P3.0, P3.1, P3.2, P3.3, P3.4, P3.5, P3.6 and P3.7 are used to connect to driver module ULN 2003; the driving module ULN2003 is connected with three driving loads, namely a loudspeaker, a light emitting diode and a relay; p2.0, P2.1, P2.2 and P2.3 are respectively connected to a button, and the buttons form a button end; VCC ports, P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6 and P0.7 are connected to nine ports of exclusion a 103J; further, P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6 and P0.7 are also connected to the D0-D7 ports, RS, R/W and E ports of the liquid crystal display LCD1602, respectively, together with P2.4, P2.5 and P2.6; the VCC end of the LCD1602 is connected to the DC source, and the GND end is grounded.
Claims (10)
1. A logic training development board characterized by: the device comprises a singlechip chip, a liquid crystal display screen, a clock module, a driving load, a pull-up resistor, a communication module and a key group;
the single chip microcomputer chip can be used for loading programs and realizing a master control function, the clock module provides clock signals for a system, the driving module is used for driving a connected driving load, the pull-up resistor is used for increasing the level to a high level, the communication module is used for data transmission, and the key group is used for providing a key control function;
the liquid crystal display screen, the clock module, the driving module, the pull-up resistor, the communication module and the key group are respectively connected to the single chip microcomputer chip;
the signal output port of the driving module is connected with the input end of the driving load, and the power supply end of the driving load is connected with a driving power supply.
2. A logic training development board according to claim 1, wherein: and the pull-up resistor adopts exclusion.
3. A logic training development board according to claim 2, wherein: the size of the exclusion is A103J.
4. A logic training development board according to claim 1, wherein: the single chip microcomputer chip is a chip with the model of STC89C 51.
5. A logic training development board according to claim 1, wherein: the clock module adopts a chip with the model number of DS 1302.
6. A logic training development board according to claim 1, wherein: the driving module adopts a composite transistor array with the model number of ULN 2003.
7. A logic training development board according to claim 1, wherein: the driving load comprises an LED indicator light, a loudspeaker and a relay control circuit.
8. A logic training development board in accordance with claim 7 wherein: the relay control circuit comprises a relay, a diode and a controlled load, wherein the diode is connected with a coil of the relay in parallel, the anode of the diode is connected with a signal output port of the driving module, the cathode of the diode is connected with a driving power supply, and two ends of a switch of the relay are connected with the controlled load.
9. A logic training development board according to claim 1, wherein: the communication module comprises an RS232 interface and an RS485 interface.
10. A logic training development board according to claim 1, wherein: the model of the liquid crystal display screen is selected as LCD 1602.
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| CN202110279068.8A CN113129712A (en) | 2021-03-16 | 2021-03-16 | Logic training development board |
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| CN202110279068.8A CN113129712A (en) | 2021-03-16 | 2021-03-16 | Logic training development board |
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2021
- 2021-03-16 CN CN202110279068.8A patent/CN113129712A/en active Pending
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