英文翻译

EDA Technology And Multisim Software EDA is Electronic Design Automation (Electronic Automation) is the abbreviation of themselves, in the early 1990s from computer aided Design (CAD), computer aided manufacturing (CAM), computer aided testing (CAT) and computer aided engineering (CAE) development of the concepts and come.EDA technology is on the computer as the tool, the designer in EDA software platform, with VHDL HDL finish design documents, then by the computer automatically logic compilation, reduction, division, comprehensive, optimization, layout and wiring and simulation for a particular goal chips, until the adapter compilation, logic mapping and programming download, etc.1 EDA technology conceptsEDA technology is in electronic CAD technology developed on the basis of computer software system by means of computer for working platform, shirt-sleeve application of electronic technology, computer technology and information processing and intelligent technology to the latest achievements of electronic products, the automatic design.Using EDA tools, electronic stylist can be from concept, algorithm, agreement, etc, begin to design your electronic system a lot work can be finished by computer and electronic products can be from circuit design, performance analysis to design the IC territory or PCB layout the whole process of the computer automatically complete the processing.Now on the concept of using EDA or category very wide. Included in machinery, electronics, communication, aerospace, chemical, mineral, biology, medicine, military and other fields, have EDA applications. Current EDA technology has in big companies, 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. Globalization-the EDA technology, mainly in electronic circuit design, PCB design and IC design.EDA can be divided into system level and circuit-level and physical implementation level.2 EDA commonly used softwareEDA tools to emerge in endlessly, now entering into China and extensive influence of EDA software are: multiSIM, PSPICE OrCAD, PCAD,,,,, ViewlogicProtel 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 nets list document with a third party software interface.According to the main function below or main applications, divided into circuit design and simulation tools, PLD design software and other EDA software, simple introduction.2.1 electronic circuit design and simulation toolsWe 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, didn't think, so they wasted a lot of our time and materials. And increases product development cycle and lasted product time-to-market transforms product lose market competitive 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 medium-sized 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 computer, then through computer programming compile a virtual environment of software, and make it can automatic gamecomponent related formula and call after long-term accumulated input computer 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 computer platform of various simulative debugging can. Similarly, they many other things are adopted such similar method, from large to small, from complex to simple, even including the design of furniture and composition, just specific software different contents. In fact, they invented the first generation of computers is this purpose (it is to efficient designartillery and related shells and other large amount of calculation of design).Electronic circuit design and simulation tools including SPICE/PSPICE; MultiSIM; Matlab, SystemView; MMICAD LiveWire, Edison, Tina Pro who Spark etc. The following simple introduced the first three software.2.1.1MultiSIM：Multisim is Interactive Technologies Ltd in 20th century rolls out circuit simulation software. Its newest edition is multiSIM2013, currently in widespread use is multiSIM10, relative to other EDA software, it has more image intuitive man-machine interface, especially its instrument repository each instrument operation and real in a real experiment instrument, but it do not differ completely 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 , potter instrument (quite actually of sweeping frequency instrument), words signal generator, the logical analyzer, logic transition meter, the distortion degree analyzer, spectrum analyzer, network analyzer and voltmeter and ammeter etc instrumentation. Also provides our daily common various modeling accurate components, such as resistors, capacitors, and inductors, triode, diodes, relays, SCR, digital tube etc. Analog integrated circuits have all sorts of operational amplifiers, other common integrated circuits. Digital circuit has 74 series integrated circuits, 4000 series integrated circuits, etc also support the homemade components.Multisim is used in colleges and universities around the globe. It has become an essential academic tool. Academic features available in Multisim provide students with intuitive methods for easily exploring circuit theory.Because National Instruments products can be applied at the introductory, advanced and professional levels, students’proficiency with the software will naturally grow over time, allowing them to focus on tackling increasingly complex content and projects, not on learning new tools over and over as their needs increase.（1）Prototyping①3D Virtual Components：Multisim includes a set of components specifically designed for students with little to no experience working with parts in real life. When placed on the schematic, these 3D virtual components appear exactly as they look in the real world. These components are available in the Basic group of the Master Database, under the 3D_VIRTUAL family.②Animated Components：Animated components provide students with visual feedback on circuit operation during simulation. Examples of animated components include LEDs, 7-Segment displays, and other interactive components such as switches and potentiometers. Animated components are located throughout Multisim's databases.③Rated Components：Rated Componentshave tolerances just like real-world parts. Users can control the tolerance level by editing the part properties. If the power being dissipated by a virtual rated resistor is above the threshold, the resistor will "explode" on the schematic, and act as an open circuit. Rated Virtualcomponents can be found in the RATED_VIRTUAL family of the Basic group in the Master Database.④3D Virtual Breadboard：Multisim also includes a 3D Virtual Breadboard. The breadboard can be used to teach students important prototyping techniques. Nets and components will turn green on the schematic when their corresponding breadboard elements have been correctly wired. The breadboard also includes a Design Rules Check (DRC) and Connectivity Check.⑤3D Virtual ELVIS：In addition to the standard 3D Virtual Breadboard, students also have the option to create NI ELVIS schematics, which will have a corresponding 3D ELVIS representation. The virtual instruments included with NI ELVIS such as the function generator, oscilloscope, and variable power supplies have also been modeled. To create an NI ELVIS schematic, click File/New/ELVIS Schematic.To access the ELVIS virtual instruments, double-click on the terminals corresponding to the desired instrument.（2）Troubleshooting①Circuit Faults：Instructors have the ability to insert faults into schematics, and have students hone their troubleshooting skills by trying to find the faults. The injected faults can be hidden to force students to apply fundamental techniques of troubleshooting. To add a fault into a component, double-click on the component, and select the Faults tab.Faults include open circuits on a particular terminal, short circuits between two pins of a component, and resistive losses measured in Ohms.②Black Boxes：Instructors can also use subcircuits as black boxes, and engage students in more sophisticated circuit analysis techniques. To create a black box problem, use the information in Section I on creating subcircuits. Note:Hierarchical blocks should not be used as black boxes because the internal circuitry is stored in a separate file, which students would be able to view.③Circuit Restrictions：Circuit restrictions play a very important role when creating black box problems, or inserting circuit faults. Restrictions allow instructors to prevent students from seeing subcircuits, hide the faults, and limit the number or available components and instruments. In this manner, as an example, it is possible to force students to use an oscilloscope to make gain measurements when determining the bandwidths of filters, as a bode plotter or AC analysis may not always be available.Global and circuit restrictions are available under the Options menu. Restrictions are locked by password.2.2 PLD design toolsPLD (Programmable Device) is a kind of questions by users according to need itself Logic functions of tectonic digital integrated circuit. At present basically has two big type: PLD (CPLD) and Complex Programmable Gate Array FPGA (Field). Their basic design method is by EDA software, with the principle diagram, state machine, Boolean expressions, hardware description language and other methods, generating the corresponding target files, finally using programmer or download cable, the target device implements. Production PLD manufacturers many, but the most representative of PLD manufacturer for Altera, Xilinx and Lattice company.PLD development tool, generally by components manufacturers to provide, but along with the increasing device, the scale of the software, at present the complexity increases by special software company with device manufacturer use, launch powerful design software. Introduce below main components manufacturers and development tools.(1)ALTERA: after 1990's develops very quickly. The main products are: MAX3000/7000, FELX6K / 10K, APEX20K, ACEX1K, Stratix etc. Its development tools - MAX + PLUS II is more successful PLD development platform, the latest again launched Quartus II development software. Altera company provides more forms of design input method, binding third-party VHDL comprehensive tools, such as: integrated software FPGA Express, such ModelSim Leonard, simulation software.(2)the inventor of the ILINX: FPGA. Product categories with complete, basically have: XC9500/4000, Coolrunner (XPLA3), Spartan, Vertex etc series, its biggest Vertex - II Pro device has reached eight million door. Develop software for the Foundation and ISE. Generally speaking, people in Europe with Xilinx, in Japan and the asia-pacific region, with ALTERA more people in the United States is equal shares. Global PLD/FPGA products by 60% is Altera and Xilinx provide. Can speak andAltera Xilinx together determine PLD technology development direction.(3)Vantis: Lattice is Lattice - ISP (In) technical Programmability - System inventors. The ISP technology greatly promoted the development of the product, and PLD XILINX ALTERA and compared, its development tools than ALTERA and XILINX lower. Medium scale PLD more characteristics, large-scale PLD competitiveness quite good enough (Lattice no based on look-up table technology of large-scale FPGA), 1999 launch programmable analog device, 1999 acquisition Vantis (original AMD affiliates), the third-leading programmable logic device supplier. December 2001 acquisition Agere company (formerly Lucent microelectronics department) FPGA department. The main products are ispLSI2000/5,000/8,000, MACH4/5.(4)ACTEL: the melting wire (one-time burning) PLD leader. Because the melting silk PLD resist radiation resistant, high temperature, low power consumption, high speed, so in their military and aerospace level there is great advantage. ALTERA and is generally not sortie XILINX military and aerospace level market.(5)Quicklogic: professional PLD/FPGA company, by the disposable anti melt silk process is given priority to, in China's regional sales is not big.(6)Lucent: main characteristic is many used communication field dedicated IP core, but PLD/FPGA Lucent's main business, not in China to use very few people.(7)Medium scale ATMEL: PLD did well. ATMEL did some Xilinx compatible with Altera and movies, but on quality and original manufacturers still has some gaps, in high reliability products use less, multi-purpose at the low end products.(8) Clear Logic: PLD/FPGA big company compatible chips which can be your design, not programming, one-time cure batch production cost is low.(9)the WSI: production PSD (SCM programmable peripheral chip) products. This is a special kind of PLD, such as the latest PSD8xx, PSD9xx integrated PLD, an EPROM, Flash, and to support the ISP (online programming), integration, mainly used for high with single-chip work.BTW: PLD (programmable logic device) is a kind of can replace completely 74 series and GAL, the PLA's new circuits, so long as has the digital circuit basis, can use computer, can undertake PLD development. PLD online programming ability and strong development software, make engineers can days, or even minutes can be completed before a few weeks to finish the job, can be millions of door of complex design integrated in a single chip inside. PLD technology in developed countries hasbecome electronic engineers must technology.2.5 Other EDA softwares(1) the VHDL language: super-fast integrated circuit Hardware description language (VHSIC Hardware Deseription Languagt, abbreviation VHDL), is a standard IEEE design language. It originated from the United States defense department puts forward a hyperfast Integrated circuits (to prompt the vehicle was done, abbreviation VHSIC) plan, ASIC design and PLD design of a main input tools.(2) Veriolg HDL: is Verilog company launched hardware description language, in ASIC design with VHDL language in equal measure.(3) other EDA software such as specially for the microwave circuit design and power tools, PCB production and carrier process control and other areas of tools, in this was not introduced.3 EDA applicationsEDA in teaching, scientific research, product design and manufacturing and other aspects plays a tremendous role. In teaching, almost all engineering (especially electronic information) class universities are opened EDA courses. Mainly is to let students understand the basic concepts and EDA, and grasp the basic principle in HDL language compose standard, and grasp the logic synthesis theory and algorithm, using EDA tools for electronic circuit course of experiment and engaging in the simple system design. General learning circuit simulation tools (such as multiSIM, PSPICE) and PLD development tools (such as Altera/Xilinx of device structure and development system), for the future work to lay the foundation.Scientific research mainly using circuit simulation tools (multiSIM or PSPICE) circuit design and simulation, Make use of virtual instruments for product testing, Will CPLD/FPGA device application to instruments, Engaged in PCB design and ASIC design etc.In product design and manufacturing, including computer simulation, product development of EDA tools system-level simulation and application, the simulation test environment, production line EDA technology application, product testing and so on each link. Such as PCB production, electronic equipment research and production, circuit board of welding, ASIC production process etc.Judging from the application field, EDA technology already seeped industries, as mentioned, including in machinery, electronics, communication, aviation aerospace shuttle, chemical, mineral, biology, medicine, military and other fields, have EDA applications. In addition, EDA software functions of increasingly powerful, the original function is more onefold software, now increases a lot of new applications. Like Auto CAD software can be used for mechanical and architectural design, alsoexpands to building decoration and all kinds of rendering, vehicle and airplane model, movie stunt, etc.4 EDA technical development trendJudging from the current EDA technology, its development trend is government attaches importance to, use popularization and application widespread, diversified, software powerful tools.China EDA market has yet to mature, but most of the design engineer oriented is PCB board system and small ASIC field, only a tiny fraction of (about 11%) design personnel development complex chip system device. In order to Taiwan, United States and design engineer form more powerful competition, Chinese design team is necessary to introduce and learn some new EDA technology.In information communication field to priority to the development of high-speed broadband information network, submicron integrated circuits, the new components, computer and software technology, third generation mobile communication technology, information management, information security technology, actively develop by digital technology, network technology as the foundation of the new generation information products, developing new industry, cultivating new economic growth point. We need to vigorously push forward manufacturing informatization, actively develop the computer aided design (CAD), computer aided engineering (CAE), computer aided process (CAPP), computer aided manufacturing (CAM), product data management (PDM), manufacturing resource planning (MRPII) and enterprise resource management (ERP), etc. Conditional enterprise can carry out the "network manufacturing", facilitate cooperation design, manufacturing, participates in the cooperation of domestic and international competition. Carry out the "numerical control" project and "digital" project. Automation instrument of technical development trend of testing technology, control technology and computer technology, communication technology further integration, form measurement, control, communication and computer (M3C) structure. In ASIC and PLD design, to ultra-high speed, high density, low power consumption, low voltage aspect development.Peripherals technology and EDA engineering of combining the market outlook, such as combination large screen of related links, screen technology also develop further.China since 1995, to accelerate the development of semiconductor industry hasestablished several design center, promote series design activities to cope with the asia-pacific region other EDA market competition.In EDA software development, etc, which are mainly concentrated in the United States. But countries are struggling to develop corresponding tools. Japan, South Korea has ASIC design tools, but do not open to the outside world. China welltec IC design center, and also provides IC design software, but the performance is not very strong. Believe in the near future will have more better design tools around flower and results. According to recent statistics, China and India are becoming electronic design automation field's fastest-growing markets, laminated growth in summer respectively achieved 50% and 30%.EDA technology is developing rapidly, and can completely with changing to describe. EDA technology application is extensive, now has related to all walks of life. EDA level enhances unceasingly, design tools tend perfect proportions. EDA market matures, but our r&d level still very limited, still need to catch up.。