EDA is the abbreviation of Electronics Design AutomaTIon. In the mid-1960s, it was developed from the concept of CAD, CAM, CAT and CAE Come from.
In the 1990s, countries with advanced electronic and computer technologies in the world have been actively exploring new electronic circuit design methods. They have also made radical changes in design methods and tools and achieved great success. In the field of electronic technology design, the application of programmable logic devices (such as CPLDs, FPGAs) has been widely used. These devices bring great flexibility to the design of digital systems.
Application of EDA toolsEDA tool software can be roughly divided into three categories: chip design auxiliary software, programmable chip auxiliary design software, and system design auxiliary software.
The EDA software that currently enters China and has extensive influence is the system design auxiliary software and programmable chip assisted design software: Protel, AlTIum Designer, PSPICE, mulTIsim12 (the latest version of the original EWB), OrCAD, PCAD, LSIIogic, MicroSim, ISE, Modelsim, Matlab, and so on. These tools have strong functions and can generally be used in several aspects. For example, many softwares can perform circuit design and simulation. At the same time, they can also conduct automatic PCB layout and routing, and can output a variety of netlist files and third-party software interfaces.
PROTEL is the EDA software that AlTIum Company put out at the end of the 80's, in the electronic industry CAD software, it deservedly ranks in front of a large number of EDA software, it is the software of the electronic designer's first choice, it was used in domestic in the early time, in The penetration rate in China is also the highest. Some colleges and universities specialize in e-professional courses to learn about it. Almost all electronic companies use it. Many large companies often write requirements on the condition bar when they recruit electronic design talents. PROTEL will be used.
Protel main functions
Function one:
Draw a relatively neat and beautiful schematic, such as the following example:
Function two:
Generate PCB board files that can be used in factory production.
There are three main ways to get a PCB.
The first type: Automate wiring using a netlist file generated at the same time by drawing a schematic diagram to generate a PCB file.
The second type is to use manual prewired wiring at PEOTEL PCB using a netlist file that is generated at the same time by drawing a schematic.
The third kind is the low efficiency method, that is, pure manual wiring.
For example, the following is the wiring effect of the PCB file generated by automatic routing:
Function 3:
Miscellaneous features, such as:
Generate a list of components, generate a drill positioning file for a CNC drilling machine, generate a solder mask file, generate a printed character layer file, and so on. You almost want it all. In addition, it also integrates hardware simulation capabilities!
Protel advantages
â—† can generate more than 30 formats of electrical connection network table;
â—† powerful global editing capabilities;
â—† Select a device in the schematic, the same device in the PCB will also be selected;
â—† Simultaneously run schematics and PCBs to allow bidirectional cross-referencing of components, pins, and networks between open schematics and PCB diagrams
â—† Both positive note designation (from schematic to PCB) and reverse note (from PCB to schematic) to maintain the consistency of the electrical schematic and PCB design;
â—† Meet the international design requirements (including the national standard title bar output, GB4728 national standard library); * Easy to use digital-analog hybrid simulation (compatible with SPICE 3f5);
â—† Supports the use of CUPL language and schematic design PLD to generate standard JED download files; * The PCB can design 32 signal layers, 16 power-ground and 16 machined layers;
â—† Powerful "rule-driven" design environment, in line with the online and batch processing design checks;
â—† Intelligent copper clad function, covering uranium can be automatically repaved;
â—† Provide a large number of industrial standard circuit boards as design templates;
â—† Place Chinese characters function;
Common Hardware Design Five EDA Tools - EWBEWB software, the full name of ELECTRONICS WORKBENCH EDA, is the EDA software that Interactive Image Technology Co., Ltd. introduced in the early 1990s. It is used for the simulation of analog circuits and digital circuits. It can be used to directly see the output of various circuits from the screen. Waveform. The EWB is a compact, but powerful simulation software.
EWB function
Compared to other EDA software, it is a small software, only 16M, the function is relatively simple, is to carry out a mixed simulation of analog circuits and digital circuits, but you must not overlook it, its simulation function is very powerful, can be almost 100 Simulate the results of real circuits %, and it provides tools such as multimeters, oscilloscopes, signal generators, sweepers, logic analyzers, digital signal generators, and logic converters on the desktop, and its device library contains Many large company's transistor components, integrated circuits and digital gate chips, components not found in the device library, can also be imported from external modules. Among the numerous circuit simulation softwares, EWB is the easiest to use, and its work The interface is very intuitive, the schematic and various tools are all in the same window. Those who haven't touched it can use it very skillfully. For electronics designers, it is an excellent EDA tool. Many circuits don't need to use the soldering iron to know its result, and if you want to change the components or change the parameters of the components, only With a little mouse click, it can also be used as an auxiliary teaching software for electrical knowledge.
EWB features
(1) Using an intuitive graphical interface to create the circuit: on the computer screen to imitate the real lab's workbench, drawing circuit diagrams of the required components, circuit simulation test instruments can be selected directly from the screen;
(2) The appearance and operation mode of the control panel of the software instrument are similar to those of real objects, and the measurement results can be displayed in real time.
(3) EWB software has a rich library of circuit components and provides a variety of circuit analysis methods.
(4) As a design tool, it can exchange data with other popular circuit analysis, design, and board software.
(5) EWB is also an excellent electronic technology training tool. Using the virtual instrument it provides can be used to conduct circuit experiments in a more flexible manner than in the laboratory, simulate the actual operation of the circuit, and be familiar with common electronic instrument measurement methods.
Altium Designer is an integrated electronic product development system launched by Altium, the original Protel software developer. It runs on the Windows operating system. This software provides designers with a completely new design solution through the perfect integration of schematic design, circuit simulation, PCB drawing and editing, topological logic auto-routing, signal integrity analysis and design output. Designing and using this software skillfully will surely increase the quality and efficiency of circuit design.
Altium Designer features
1, schematic design
2, printed circuit board design
3, FPGA development
4, embedded development
5, 3D PCB design
OrCAD is an electronic design automation suite software for personal computers. It is designed to allow electronic engineers to design circuit diagrams and related diagrams, design print plans for printed circuit boards, and simulate circuits.
OrCAD function
Early in the DOS environment ORCAD4.0, it integrated the circuit schematic drawing, printed circuit board design, digital circuit simulation, programmable logic device design and other functions, and its interface is friendly and intuitive, its components The library is also the most abundant of all EDA software, and it has always been the first choice in EDA software. After ORCAD merged with CADENCE in July 2000, it became the most powerful company in the world to develop EDA software. Its product ORCAD Century Integrated Edition works under WINDOWS95 and WINDOWSNT environment, and integrates electrical schematic drawing and printing. Circuit board design, analog and digital circuit hybrid simulation and other functions, its circuit simulation of the library reached 8500 more, received almost all of the general-purpose electronic components module, its powerful features led to its price It's not cheap. Its century-advanced version sold for $7995 in North America.
OrCAD advantages
1. Graphic, flat and hierarchical design capabilities increase the efficiency of schematic design;
2. It is highly integrated with a powerful component information system (CIS) to promote the reuse of preferred devices and existing device libraries, which can speed up the schematic design process and reduce project costs;
3, easy to find components, and highly integrated with the MRP, ERP, PDM database;
4, to provide users with more than 200 million free component library, easy to choose flexible design components;
5, centralized management of material number and device information;
6, can carry on the data flow, the package and the interconnection online design rule check;
7. Users can flexibly edit and define components, connections, networks, pins, and header boxes.
8, can import and export all commonly used design file formats;
9. Macro recorders can be used for complex schematic editing and recording of custom processes.
MATLAB is a commercial mathematics software produced by American MathWorks. It is used for advanced technical computing languages ​​and interactive environments for algorithm development, data visualization, data analysis, and numerical calculation. It mainly includes MATLAB and Simulink.
It integrates many powerful functions such as numerical analysis, matrix calculations, visualization of scientific data, and modeling and simulation of nonlinear dynamic systems into an easy-to-use window environment for scientific research, engineering design, and many sciences that must be efficiently numerically calculated. The domain provides a comprehensive solution, and to a large extent out of the traditional non-interactive programming languages ​​(such as C, Fortran) editing mode, representing the advanced level of international scientific computing software.
The main function of MATLAB
The advantages of MATLAB
1) Efficient numerical calculations and symbolic calculations can free the user from complicated mathematical analysis;
2) Complete graphics processing functions to achieve visualization of calculation results and programming;
3) Friendly user interface and natural language approaching mathematical expressions make it easy for learners to learn and master;
4) Feature-rich application toolkit (such as signal processing toolbox, communication toolbox, etc.) provides users with a large number of convenient and practical processing tools.
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