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1. Why can the program on the circuit board run?
Because the program is the programmer in accordance with certain programming rules and device principles to burn the compiled ** into the single-chip microcomputer or other executable program devices, and then the chip will perform relevant operations according to these **.
2. Under what circumstances will the program not run or mess up?
There are many reasons for this, 1) the chip is affected by external interference, such as the program runs abnormally, 2) the chip's power supply ** does not meet the requirements or errors cause the chip to not work normally, of course, the program can not run at this time. 3) The program is no longer able to run due to damage to the chip due to the wrong power connection or the long age of use. 4) Vulnerabilities in the program itself.
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Externally given commands (signals) and other conditions make the program run. If the program is faulty, the hardware may be that the program memory is broken or the command (signal) does not arrive, and the command (signal) channel is faulty; Sometimes it's the program that has an endless loop...
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Design of circuit schematics.
The design of the circuit schematic is mainly based on the use of Protel
DXP's schematic machine to draw the schematic.
Generate network reports.
The network report is to show the circuit principle and the link relationship between the various components, it is the bridge and link that connects the circuit schematic design and the circuit board design (PCB design), through the network report of the circuit schematic, you can quickly find the connection between the components, so as to provide convenience for the PCB design behind.
Design of printed circuit boards.
The design of the printed circuit board is what we usually call the PCB design, which is the final form of the circuit schematic transformation, and the related design of this part is more difficult than the design of the circuit schematic, we can use Protel
The powerful design features of DXP complete this part of the design.
Generate printed circuit board reports.
After the printed circuit board design is completed, various reports need to be generated, such as pin reports, circuit board information reports, network status reports, etc., and finally the printed circuit diagram is printed.
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A program error may be disturbed or the program memory is broken.
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Write a program for the board that is called: C or assembly.
Hardware driver: API interface for hardware initialization, reading and writing data to the hardware, and special functions of the hardware.
System functions: the initialization of the entire software, the management of hardware, the management of application software, and the management of memory.
After the program is transformed, the program needs to be checked for syntax errors, which can only self-diagnose the syntax, and has nothing to do with the design content. To check the program, click "Program Check" in the menu bar of the tool.
Compatible Design: Electromagnetic compatibility.
It refers to the ability of electronic equipment to work in a coordinated and effective manner in various electromagnetic environments. The purpose is to enable the electronic equipment to not only suppress all kinds of external interference, so that the electronic equipment can work normally in a specific electromagnetic environment, but also to reduce the electromagnetic interference of the electronic equipment itself to other electronic equipment.
1. Choose a reasonable wire width due to the transient current in the PCB circuit board.
The shock interference generated on the printed wire is mainly caused by the inductive component of the printed wire, so the inductance of the printed wire should be minimized.
2. The correct wiring strategy can reduce the wire inductance by using circular shielding and equal wiring, but the mutual inductance and distributed capacitance between the wires increases, if the layout allows, it is best to use the tic-tac-toe mesh orange and wiring structure, the specific method is the printed board.
One side is routed transversely, the other side is routed longitudinally, and then connected with metallized holes at the crossing holes.
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1. Press the F4 key of the keyboard directly, click the "Transform" menu bar, then click the first item "Transform", click the "Program Transform" button on the toolbar, and choose the appropriate transformation method according to your habits.
2. After the program is transformed, it is necessary to check whether there are grammatical errors in the program, which can only self-diagnose the grammar, and has nothing to do with the content of the Pipei plan. To check the program, click "Program Check" in the menu bar of the tool.
3. Prompt that there is a double-coil output, because some "manual automatic" double-coil output is also normal.
5. Click the Write button in the toolbar directly.
6. After clicking to write, the content of the writing will be prompted, you can choose to write only the program without writing comments, or you can select all. If the PLC memory allows, it is recommended to write all the programs, parameters, and comments, which will help for future debugging.
7. After clicking "Execute", multiple prompt windows will appear, generally select "Yes" after viewing the prompt content, until the program is written.
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The working principle of the circuit board is to use the board base insulating material to isolate the surface copper foil conductive layer, so that the current flows along the pre-designed route in various components to complete functions such as work, amplification, attenuation, modulation, demodulation, coding, etc.
The circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, fillers, electrical boundaries, etc. There are three common board layer structures: single layer PCB, double layer PCB, and multi layer PCB. The main functions of each component are as follows:
Pad: A metal hole used to solder the pins of a component.
Vias: There are metal vias and non-metallic vias, where metal vias are used to connect component pins between layers.
Mounting holes: used to secure the circuit board.
Wire: A copper film for an electrical network used to connect the pins of a component.
Connectors: Components used to connect between circuit boards.
Filling: Copper pour for ground wire networks, which can effectively reduce impedance.
Electrical Boundary: Used to determine the size of the board, beyond which all components on the board can be reached.
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1. The working principle of the circuit board is to use the insulating material of the board base to isolate the conductive layer of the copper foil on the surface, so that the current flows in various components along the pre-designed route to complete functions such as work, amplification, attenuation, modulation, demodulation, and coding.
2. The circuit board is mainly composed of pads, vias, mounting holes, wires, components, connectors, filling, and electrical boundaries.
3. Common board structure includes single layer PCB, double layer PCB and multi layer PCB.
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The schematic diagram of the circuit board is explained as follows:
There are different shapes and different kinds of electronic components on the circuit board of electronic products, and their corresponding word identification, symbols and related parameters are marked next to the components. Components are the basis of electronic products, that is to say, any electronic product is composed of a variety of components.
Therefore, understanding the basic knowledge of electronic components, mastering the symbols and basic functional characteristics of different components in the circuit diagram is the first step to understand the circuit principle. This is equivalent to reading an article, and it is a truth that you must first be literate.
In order to understand the circuit schematic diagram, it is necessary not only to master some rules, skills and methods, but also to have some solid theoretical basic knowledge in order to quickly learn to understand the schematic diagram. It is necessary to be proficient in the basic knowledge of commonly used electronic components in electronic products, such as resistors, capacitors, inductors, diodes, transistors, thyristors, transformers, integrated circuits, etc., and fully understand their types, characteristics and symbols in the circuit, what role and function they play in the circuit, etc.
For integrated circuits, beginners don't have to understand its internal structure and principle, just need to see it as a black box, with input signal end and output signal end, what functions can be achieved, it is impossible to understand it at the beginning, and it is easy to play confidence, resulting in a big reduction in interest.
The unit circuit is composed of common components, simple circuits and basic amplifier circuits that can realize some basic functions, and is a unit module of the whole circuit, such as series-parallel circuits, RC circuits, LC circuits, amplifiers, oscillators, etc. If knowing components is equivalent to literacy, then learning unit circuits is equivalent to a paragraph in an article.
Any electronic product has a unit circuit that can achieve different functions, such as power supply circuit, so to learn to read the schematic diagram must start from the power circuit before touching the tung, understanding the structure and function of the simple circuit is very helpful to understand the schematic diagram of the whole machine.
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1.Press the F4 key of your keyboard directly, click the "Transform" menu bar, then click the first "Transform" item, click the "Program Change" button on the toolbar, and choose the appropriate transformation method according to your habits.
2.After the program is changed, it is necessary to check the program for syntax errors. This kind of check can only self-diagnose the grammar and has nothing to do with the design nonsense. To check the program, you need to click "Program Check" in the tool menu bar.
3.It is recommended to have a humbucker output, as some "manual automatic" humbucker outputs are also fine.
5.Click the Write button directly in the toolbar.
6.Click and write and you'll be prompted to write something. You can choose to write only the program without writing comments, or you can choose all. It is advisable to write all programs, parameters and comments when the PLC memory allows, which will help you to debug after a while.
7.Once you click "Go", multiple prompt windows will appear. After selecting the prompt content, select Yes until the program is written.
1. Print the circuit board Print the drawn circuit board with transfer paper, pay attention to the slippery side facing yourself, and generally print two circuit boards, that is, two circuit boards on one paper. Among them, select the best printed circuit board to make the printed board. 2. Cutting copper clad laminates and using photosensitive boards to make circuit boards. >>>More
How to solder the circuit board, first adjust the computer iron to 350 degrees 10 degrees, and then make an appointment for 2 3 seconds on the head of the computer iron, and then put the solder wire at the head of the computer, which is the solder line melted and the solder fully understands the impact of the pad and software for 1 2 seconds, and the soldering iron is completed.
The design of the printed circuit board is based on the schematic diagram of the circuit to implement the functions required by the circuit user. The design of printed circuit boards mainly refers to layout design, which requires various factors such as internal electronic components, metal wiring, layout of through-holes and external connections, electromagnetic protection, heat dissipation, and crosstalk. >>>More
It's not enough for you to talk about weak signals, how weak are they? What is weak and what is strong? Both strong and weak are relative. >>>More