Digital circuit experiment board

Abstract

The utility model belongs to the technical field of digital circuit experiment props, and discloses a digital circuit experiment board, which comprises a PCB (printed circuit board), and the PCB is provided with a power-on module which is provided with a wiring socket, can be externally connected with a power supply, and outputs a plurality of groups of direct-current power supplies from a first terminal after passing through an integrated circuit, so that the power supplies are power supplies required by circuit experiments; the nixie tube display module is integrated with a common cathode nixie tube, a common anode nixie tube and terminals II connected with the pins in a one-to-one correspondence manner; the LED display module is provided with a plurality of LED bulbs and terminals III corresponding to the LED bulbs; the IC module is provided with a plurality of groups of DIP packaged IC sockets and terminals IV corresponding to the pins; discrete components and pins V of the discrete components are arranged in the discrete component module. According to the utility model, the components are integrated on the PCB according to partitions, the layout logicality and orderliness of the components are relatively strong, the terminals are uniformly arranged, the connection and disassembly are convenient, the convenience and safety of circuit experiments of students are improved, the carrying is convenient, and learners can conveniently carry out experiments anytime and anywhere.

Description

Technical Field

[0001] The utility model belongs to the technical field of digital circuit experiment props, and particularly relates to a digital circuit experiment board. Background Art

[0002] When students conduct digital circuit experiments, they usually test the effects generated after connecting various electronic components according to the set circuit. The existing experimental equipment is relatively scattered. During the experiment, it is necessary to select scattered parts for assembly, connection, disassembly, wiring and other operations. This not only makes the operation cumbersome and inconvenient to carry, but also easily causes chaos when placing, damage to components, and phenomena such as poor contact and short circuit. There is also a type of experimental method that welds components on a universal circuit board and then removes them after the test. This method is cumbersome to operate and is prone to damage to electronic components and the circuit board.

[0003] Based on the current situation, a digital circuit experiment board is proposed. Summary of the Utility Model

[0004] To overcome the above technical problems, the utility model provides a digital circuit experiment board, which integrates components in zones on a PCB board, has strong logicality, and improves the convenience and safety of students' circuit experiments.

[0005] The utility model adopts the following technical solutions:

[0006] A digital circuit experiment board includes a PCB board, on which a power-on module, a digital tube display module, an LED display module, an IC module, and a discrete component module are provided. The power-on module has a wiring socket, can be externally connected to a power supply, and outputs multiple groups of DC power supplies from terminal 1 after passing through an integrated circuit, so as to provide the power required for circuit experiments. A switch, a fuse, and an indicator light are provided in the power-on module; the digital tube display module integrates a common cathode digital tube and a common anode digital tube and terminal 2 connected to the pins one by one; the LED display module has multiple LED bulbs and their corresponding terminal 3; the IC module is provided with multiple groups of IC sockets in DIP package and terminal 4 corresponding to the pins; discrete components and their respective pin 5 are provided in the discrete component module.

[0007] Preferably, all terminals adopt the same type of round hole socket terminals.

[0008] Preferably, the IC socket adopts a snap-on tube socket.

[0009] Preferably, the discrete components include resistors, capacitors, potentiometers, and level conversion circuits.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model integrates components on a PCB board by partition, with strong logic and orderliness in the layout of components. Terminals are uniformly set, making connection and disassembly convenient, improving the convenience and safety of students' circuit experiments, and being easy to carry, facilitating learners to conduct experiments anytime and anywhere.

[0012] 2. The utility model can complete experiments on basic gate circuits, encoders, decoders, data selectors, adders, decoder displays, Schmitt triggers, monostable flip - flops, astable multivibrators, counters, etc., and can basically meet all experiments on basic logic circuits in digital electronics. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the overall schematic diagram of the utility model;

[0014] Figure 2 is the circuit connection schematic diagram of Experiment 1 in the embodiment;

[0015] Figure 3 is the circuit connection schematic diagram of Experiment 2 in the embodiment.

[0016] DESCRIPTION OF THE REFERENCE NUMERALS:

[0017] 1. Power - on module; 11. Wiring socket; 12. Switch;

[0018] 2. Digital tube display module; 3. LED display module;

[0019] 4. IC module; 41. IC socket;

[0020] 5. Discrete component module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The embodiments of the utility model are described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. Unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the embodiments, unless otherwise stated, are conventional methods in the art. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model and should not be construed as a limitation of the utility model.

[0022] A digital circuit experiment board includes a PCB board and five major modules mounted thereon:

[0023] Module ①: Power - on module 1

[0024] This module mainly provides the power supply required for circuit experiments. It has a wiring socket 11. The external input power supply passes through the 7805 integrated circuit and outputs 5 groups of +5V DC power supplies through terminal 1. It is equipped with a switch 12, a fuse, and an indicator light, and can be externally connected to a mobile charging power supply, facilitating learners to conduct experiments anytime and anywhere.

[0025] Module ②: Digital Tube Display Module 2

[0026] Integrates one common-cathode and one common-anode digital tube, can display numbers from "0 to 9", and leads out terminal 2 for wiring, which corresponds one-to-one with the pins of the digital tube, facilitating learners to identify the pins and connect the circuit, and can conduct experiments on the decoding display circuit.

[0027] Module ③: LED Display Module 3

[0028] There are 8 LED lights in total, leading out terminal 3, which can be flexibly connected into common-cathode drive and common-anode drive, or can be used alone, and can display the high and low levels of the circuit output.

[0029] Module ④: IC Module 4

[0030] This module is equipped with 4 groups of DIP-packaged IC sockets 41 in total. Each group of IC sockets 41 has 20 pins, which can meet the installation of all digital integrated circuits. The IC sockets 41 adopt snap-in tube sockets, which are convenient for learning to install and remove the integrated circuit. Each pin leads out terminal 4 for wiring, facilitating learners to wire and connect the circuit. It can complete experiments on basic gate circuits, encoders, decoders, data selectors, adders, decoding displays, Schmitt triggers, monostable triggers, astable multivibrators, counters, etc., and can meet the experiments of all basic logic circuits in digital electronics technology.

[0031] Module ⑤: Discrete Component Module 5

[0032] This module provides the necessary discrete components for digital circuit experiments, including resistors, capacitors, potentiometers, level conversion circuits, etc. Each component is connected to terminal 5.

[0033] A digital circuit experiment board, when in use, takes the following two experiments as examples:

[0034] Experiment 1: Installation and Debugging of Decoding Display Circuit

[0035] Use wiring to connect the circuit on the experiment board as Figure 2 shown in the figure.

[0036] Working Principle

[0037] A3A2A1A0 is the encoding input, connected to the output terminal of the level conversion circuit. 74LS48 is a decoding and display integrated circuit for driving a common cathode digital tube. YaYbYcYdYeYfYg are the decoding output terminals used to drive the digital tube. By inputting different BCD encodings to A3A2A1A0, the corresponding numbers will be displayed.

[0038] Experiment 2: Installation and Debugging of a Multivibrator + Counter + Decoding and Display Circuit

[0039] Use the wiring to connect the circuit as shown Figure 3 in the figure.

[0040] Working Principle

[0041] The LM555 integrated circuit constitutes a multivibrator circuit used to generate a pulse signal with a period of 1S. 74LS192 is a decimal reversible counter used to generate a pulse counting signal. U4 is a digital tube integrated with a decoder used to display the ten digital signals from 0 to 9. After the power is turned on, the circuit will automatically cycle through and display the ten numbers from 0 to 9.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to the above embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A digital circuit experiment board, comprising a PCB board, characterized in that, On the PCB board, there are provided: A power-on module, which has a wiring socket and can be externally connected to a power supply. After passing through an integrated circuit, multiple sets of DC power supplies are output from terminal 1, so as to provide the power supply required for circuit experiments. A switch, a fuse, and an indicator light are provided in the power-on module; A digital tube display module, which integrates a common cathode digital tube, a common anode digital tube, and terminal 2 connected to the pins in one-to-one correspondence; An LED display module, which has multiple LED bulbs and respective corresponding terminal 3; An IC module, which is provided with multiple DIP-packaged IC sockets and terminal 4 corresponding to the pins; A discrete component module, in which discrete components and respective pins 5 are provided.

2. The digital circuit experiment board according to claim 1, characterized in that, All terminals adopt the same type of round-hole socket terminals.

3. A digital circuit experiment board according to claim 1, characterized in that, The IC socket adopts a snap-on socket.

4. A digital circuit experiment board according to claim 1, characterized in that, The discrete components include resistors, capacitors, potentiometers, and level conversion circuits.

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