軟件編程設(shè)計-外文翻譯

1、<p>　　EDA的發(fā)展及VHDL的應(yīng)用</p><p>　　90's in 20 centuries, international last electronics and calculator technique more the forerunner's nation, has been being actively investigating a new design metho

2、d of the electronics electric circuit, and carried on an exhaustive change in the aspects of designing a method, tool wait, obtain huge success.At the design realm of the electronics technique, the application of program

3、mable logic spare part(like CPLD, FPGA), have already got extensive universality, these spare parts brought tremendo</p><p>　　The EDA is an electronics design automation(the Automation of the Electronic Desi

4、gn) of abbreviation, design(CAD) from the calculator assistance at the beginning of 90's in 20 centuries, calculator assistance manufacturing(CAM), calculator assistance test(CAT) and calculator lend support to the c

5、oncept of engineering(CAE) a development since then.The EDA technique is to take calculator as tool, design at EDA software terrace up, use the hardware description language HDL completion a design a doc</p><p

6、>　　These spare parts can pass a software plait a distance but as to it's hardware structure and work the way carry on heavy Gou and make thus the design of hardware can like software design so convenient fast.The

7、all these biggest changed a traditional numerical method, design process of the system design and design idea and promoted the EDA technical quick development.Make use of EDA tool, the electronics designer can start desi

8、gn electronics system from the concept, calculate way, agreement...etc</p><p>　　Use to the EDA concept or category very breadth now.Include in each realm of the machine, electronics, correspondence, aviation

9、 aerospace, chemical engineering, mineral, living creature, medical science, military...etc., all there is EDA application.The EDA technique has already extensively used in each archduke department, the Qi business unit

10、and research teaching section currently.For example in the airplane the manufacturing the process, from design, performance test and characteristic analy</p><p>　　The VHDL English full name be the HardwareDe

11、scription Language of the Integrated Circuit of the Very-High-Speed, birth in 1982.At the end of 1987, the VHDL is confirm by IEEE and American Ministry of National Defense to describe language for the standard hardware.

12、Announced VHDL standard edition from the IEEE, IEEE-1076(call 87 versions) after, the each EDA company released own VHDL design environment one after another, or declared that the own design tool can connect with VHDL.He

13、nceforth the VHD</p><p>　　All of VHDL Englishes write BE:The Descriptiong Language of the VHSIC(the Speed Integrated of the Very High Circuit) Hardware.Translating into Chinese is soon extremely high the des

14、cription language of the integrated circuit hardware.So it of the application mainly is an application in the design of numerical electric circuit.Currently, it is in the application most in China is the design which use

15、s in the FPGA/CPLD/EPLD.Certainly in some units with stronger real strenght, it is also use to desi</p><p>　　The VHDL mainly useds for the structure, behavior which describes numerical system, function with

16、connect.In addition to implying many languages sentence which have a hardware characteristic, VHDL languages forms and description style and sentence construction are very similar at general calculator deluxe language.VH

17、DL procedure structure characteristics is an engineering design, or call that the design entity(can be a component, an electric circuit mold piece or a system) is divided into exteri</p><p>　　The strong syst

18、em hardware describes ability.The VHDL has a multi-layer design description function, since can describe system class electric circuit, can describe door class electric circuit again.And description since can adopt a beh

19、avior description, deposit a machine to deliver description or structure description, can also adopt the hybrid description of threes mixture.Moreover, VHDL support is inertial to delay and deliver to delay, can also acc

20、urately build up hardware electric circuit mo</p><p>　　Be easy to a share and reply to use.The VHDL adoption can build up various mold piece that can again make use of according to the design method of datab

21、ase(Library).These canned in advance design or use to design a medium backup mold a piece before and depositted these to the database in, can be in laterly of the design carry on replying to use, can make the design resu

22、lt be design the personnel's to carry on exchanges and share, decrease hardware electric circuit design. </p><p>　　compared with other hardware description languages, the VHDL have stronger behavior des

23、cription ability, come to a decision him to become a system design realm the best hardware a description language thus.The strong behavior description ability is to avert from concrete spare part structure and describe a

24、nd design important assurance of large-scale electronics system from the logic behavior. </p><p>　　the VHDL be abundant of imitate true language sentence and database function, make in any big system of the

25、 design can inspect a function possibility of design the system in early days, can carry on imitating true emulation to the design at any time. </p><p>　　the ability and procedure structure of the behavior

26、description with lexical VHDL come to a decision the decomposition that he has to support a large-scale design with have already have design of again make use of function.Meet the market demanding large-scale system effi

27、ciently, the completion of the high speed has to include many people the several generation hair set even together and abreast works and then can carry out. </p><p>　　for use the design of an assurance of V

28、HDL completion, can make use of EDA tool to carry on logic comprehensive with excellent turn, and auto of the VHDL describe the design change into the door class net form.</p><p>　　the description of VHDL to

29、 design have opposite and independent, the design can not understand the structure of hardware and need not manage the target spare part that the end design carry out, either is what, but carry on an independent design.&

30、lt;/p><p>　　1、20世紀(jì)90年代，國際上電子和計算機技術(shù)較先進(jìn)的國家，一直在積極探索新的電子電路設(shè)計方法，并在設(shè)計方法、工具等方面進(jìn)行了徹底的變革，取得了巨大成功。在電子技術(shù)設(shè)計領(lǐng)域，可編程邏輯器件（如CPLD、FPGA）的應(yīng)用，已得到廣泛的普及，這些器件為數(shù)字系統(tǒng)的設(shè)計帶來了極大的靈活性。這些器件可以通過軟件編程而對其硬件結(jié)構(gòu)和工作方式進(jìn)行重構(gòu)，從而使得硬件的設(shè)計可以如同軟件設(shè)計那樣方便快捷。這一切極大

31、地改變了傳統(tǒng)的數(shù)字系統(tǒng)設(shè)計方法、設(shè)計過程和設(shè)計觀念，促進(jìn)了EDA技術(shù)的迅速發(fā)展?！　DA是電子設(shè)計自動化（Electronic Design Automation）的縮寫，在20世紀(jì)90年代初從計算機輔助設(shè)計（CAD）、計算機輔助制造（CAM）、計算機輔助測試（CAT）和計算機輔助工程（CAE）的概念發(fā)展而來的。EDA技術(shù)就是以計算機為工具，設(shè)計者在EDA軟件平臺上，用硬件描述語言HDL完成設(shè)計文件，然后由計算機自動地完成邏輯編譯、

32、化簡、分割、綜合、優(yōu)化、布局、布線和仿真，直至對于特定目標(biāo)芯片的適配編譯、邏輯映射和編程下載等工作。EDA技術(shù)的出現(xiàn)，極大地提高了電路設(shè)計的效率和可操作性，減輕了設(shè)</p><p>　　2、VHDL的英文全名是Very-High-Speed Integrated Circuit HardwareDescription Language,誕生于1982年。1987年底，VHDL被IEEE和美國國防部確認(rèn)為標(biāo)準(zhǔn)硬件描

33、述語言 。自IEEE公布了VHDL的標(biāo)準(zhǔn)版本，IEEE-1076（簡稱87版)之后，各EDA公司相繼推出了自己的VHDL設(shè)計環(huán)境，或宣布自己的設(shè)計工具可以和VHDL接口。此后VHDL在電子設(shè)計領(lǐng)域得到了廣泛的接受，并逐步取代了原有的非標(biāo)準(zhǔn)的硬件描述語言。1993年，IEEE對VHDL進(jìn)行了修訂，從更高的抽象層次和系統(tǒng)描述能力上擴展VHDL的內(nèi)容，公布了新版本的VHDL，即IEEE標(biāo)準(zhǔn)的1076-1993版本，（簡稱93版）?，F(xiàn)在，VHD