【文章內(nèi)容簡介】 using EDA or category very wide. Included in machinery, electronics, munication, aerospace, chemical, mineral, biology, medicine, military and other fields, have EDA applications. Current EDA technology has in big panies, enterprises, institutions and teaching research departments extensive use. For example in the aircraft manufacturing process, from design, performance testing and characteristic analysis until a flight simulator, all may involve EDA technology. Globalizationthe EDA technology, mainly in electronic circuit design, PCB design and IC design. EDA can be divided into system level and circuitlevel and physical implementation level. 2 EDA monly used software EDA tools to emerge in endlessly, now entering into China and extensive influence of EDA software are: multiSIM7 (original EWB the latest version), PSPICE OrCAD, PCAD,, Viewlogic Protel was little, Synopsys, LSIIogic, MicroSim Cadence, etc. These tools are strong function, generally can be used in several aspects, such as many software can undertake circuit design and simulation, with into and can be automatically PCB layout wiring, output various s list document with a third party software interface. According to the main function below or main applications, divided into circuit design and simulation tools, PCB design software, IC design software and PLD design tools and other EDA software, simple introduction. electronic circuit design and simulation tools We may have used test plate or other things has produced some electronic making to carry on the practice. But sometimes, we will find it to have a lot of questions, didn39。t think, so they wasted a lot of our time and materials. And increases product development cycle and lasted product timetomarket transforms product lose market petitive advantage. Have to use DianLaoTie test plate can know the results of method? Conclusion there is, this is circuit design and simulation technology. Say to the electronic circuit design and simulation tools of this technology, without mentioning America, have to mention their plane design why has high efficiency. Before our finalize the design a mediumsized plane design from the draft to the detailed design to the wind tunnel test to finally gives a picture to the actual operation, the cycle is about to 10 years. The United States is 1 year. Why is there such a huge gap? Because America in the design most USES is the virtual simulation technology, and the years of accumulation of various wind tunnel test parameters input puter, then through puter programming pile a virtual environment of software, and make it can automatic gameponent related formula and call after longterm accumulated input puter related experience parameters. Thus, as long as the aircraft shape program data in the virtual wind tunnel test software, where unreasonable have changes there, until the best effect, the efficiency high, end as long as natural again in the actual environment test several times look for shortage can finalize the design, from their Boeing 747 to us F16 are using this method. Aerodynamically data by senior experts to provide, software developers is IBM, aircraft design engineer just using simulation software in puter platform of various simulative debugging can. Similarly, they many other things are adopted such similar method, from large to small, from plex to simple, even including the design of furniture and position, just specific software different contents. In fact, they invented the first generation of puters is this purpose (it is to efficient design artillery and related shells and other large amount of calculation of design). Electronic circuit design and simulation tools including SPICE/PSPICE。 MultiSIM7。 Matlab, SystemView。 MMICAD LiveWire, Edison, Tina Pro who Spark etc. The following simple introduced the first three software. (1) the SPICE Simulation done account (vehicle) : Emphasis is launched by the university of California, Circuit analysis Simulation software, the 1980s the world the most widely applied Circuit design software, 1998 was designated as the American national standards. In 1984, the United States MicroSim pany launched microputer version PSPICE based on the SPICE (Personal SPICE). Now use morer, can say is among similar products, it is the most powerful analog and digital circuit hybrid simulation EDA software, in domestic monly used. The latest to release the version. It can undertake various kinds of circuit simulation, incentive establish, temperature and noise analysis, simulation control, waveforms output, data output, and in the same window inside also showed analog and digital simulation results. No matter what kind of device which circuit simulation, all may obtain accurate simulation results, and may independently establish ponents and ponent libraries. (2)the latest version of EWB multiSIM (add) software: is Interactive Technologies Ltd in 20th century rolls out circuit simulation software. Its newest edition is multiSIM7, currently in widespread use is multiSIM2021, relative to other EDA software, it has more image intuitive manmachine interface, especially its instrument repository each instrument operation and real in a real experiment instrument, but it do not differ pletely to module circuit of hybrid simulation function but no less, can almost 100% emulation produce real circuit, and it results in instrument repository also provides a multimeter, signal generator, watt table, dual tracer oscilloscope (for multiSIM7 also has four steps oscilloscope), potter instrument (quite actually of sweeping frequency instrument), words signal generator, the logical analyzer, logic transition meter, the distortion degree analyzer, spectrum analyzer, work analyzer and voltmeter and ammeter etc instrumentation. Also provides our daily m