毕业论文外文翻译两篇

毕业论文外文翻译两篇篇一：毕业论文外文翻译外文资料翻译译文：概述是一个统一的Web开发模型，它包括您使用尽可能少的代码生成企业级Web应用程序所必需的各种服务。

作为.NETFramework的一部分提供。

当您编写应用程序的代码时，可以访问.NETFramework中的类。

您可以使用与公共语言运行库(CLR)兼容的任何语言来编写应用程序的代码，这些语言包括MicrosoftVisualBasic、C#、和J#。

使用这些语言，可以开发利用公共语言运行库、类型安全、继承等方面的优点的应用程序。

包括：∙页和控件框架∙编译器∙安全基础结构∙状态管理功能∙应用程序配置∙运行状况监视和性能功能∙调试支持∙XMLWebservices框架∙可扩展的宿主环境和应用程序生命周期管理∙可扩展的设计器环境页和控件框架是一种编程框架，它在Web服务器上运行，可以动态地生成和呈现网页。

可以从任何浏览器或客户端设备请求网页，会向请求浏览器呈现标记（例如HTML）。

通常，您可以对多个浏览器使用相同的页，因为会为发出请求的浏览器呈现适当的标记。

但是，您可以针对诸如MicrosoftInternetExplorer6的特定浏览器设计网页，并利用该浏览器的功能。

支持基于Web的设备（如移动电话、手持型计算机和个人数字助理(PDA)）的移动控件。

网页是完全面向对象的。

在网页中，可以使用属性、方法和事件来处理HTML元素。

页框架为响应在服务器上运行的代码中的客户端事件提供统一的模型，从而使您不必考虑基于Web的应用程序中固有的客户端和服务器隔离的实现细节。

该框架还会在页处理生命周期中自动维护页及该页上控件的状态。

使用页和控件框架还可以将常用的UI功能封装成易于使用且可重用的控件。

控件只需编写一次，即可用于许多页并集成到网页中。

这些控件在呈现期间放入网页中。

页和控件框架还提供各种功能，以便可以通过主题和外观来控制网站的整体外观和感觉。

可以先定义主题和外观，然后在页面级或控件级应用这些主题和外观。

除了主题外，还可以定义母版页，以使应用程序中的页具有一致的布局。

一个母版页可以定义您希望应用程序中的所有页（或一组页）所具有的布局和标准行为。

然后可以创建包含要显示的页特定内容的各个内容页。

当用户请求内容页时，这些内容页与母版页合并，产生将母版页的布局与内容页中的内容组合在一起的输出。

所有代码都经过了编译，可提供强类型、性能优化和早期绑定以及其他优点。

代码一经编译，公共语言运行库会进一步将编译为本机代码，从而提供增强的性能。

包括一个编译器，该编译器将包括页和控件在内的所有应用程序组件编译成一个程序集，之后宿主环境可以使用该程序集来处理用户请求。

除了.NET的安全功能外，还提供了高级的安全基础结构，以便对用户进行身份验证和授权，并执行其他与安全相关的功能。

您可以使用由IIS提供的Windows身份验证对用户进行身份验证，也可以通过您自己的用户数据库使用Forms身份验证和成员资格来管理身份验证。

此外，可以使用Windows组或您自己的自定义角色数据库（使用角色）来管理Web应用程序的功能和信息方面的授权。

您可以根据应用程序的需要方便地移除、添加或替换这些方案。

始终使用特定的Windows标识运行，因此，您可以通过使用Windows功能（例如NTFS访问控制列表(ACL)、数据库权限等等）来保护应用程序的安全。

提供了内部状态管理功能，它使您能够存储页请求期间的信息，例如客户信息或购物车的内容。

您可以保存和管理应用程序特定、会话特定、页特定、用户特定和开发人员定义的信息。

此信息可以独立于页上的任何控件。

提供了分布式状态功能，使您能够管理一台计算机或数台计算机上同一应用程序的多个实例的状态信息。

通过应用程序使用的配置系统，可以定义Web服务器、网站或单个应用程序的配置设置。

您可以在部署应用程序时定义配置设置，并且可以随时添加或修订配置设置，且对运行的Web 应用程序和服务器具有最小的影响。

配置设置存储在基于XML的文件中。

由于这些XML文件是ASCII文本文件，因此对Web应用程序进行配置更改比较简单。

您可以扩展配置方案，使其符合自己的要求。

包括可监视应用程序的运行状况和性能的功能。

使用运行状况监视可以报告关键事件，这些关键事件提供有关应用程序的运行状况和错误情况的信息。

这些事件显示诊断和监视特征的组合，并在记录哪些事件以及如何记录事件等方面提供了高度的灵活性。

支持两组可供应用程序访问的性能计数器：∙系统性能计数器组∙应用程序性能计数器组利用运行库调试基础结构来提供跨语言和跨计算机调试支持。

可以调试托管和非托管对象，以及公共语言运行库和脚本语言支持的所有语言。

此外，页框架提供使您可以将检测消息插入网页的跟踪模式。

支持XMLWebservices。

XMLWebservices是包含业务功能的组件，利用该业务功能，应用程序可以使用HTTP和XML消息等标准跨越防火墙交换信息。

XMLWebservices不用依靠特定的组件技术或对象调用约定。

因此，用任何语言编写、使用任何组件模型并在任何操作系统上运行的程序，都可以访问XMLWebservices。

包括一个可扩展的宿主环境，该环境控制应用程序的生命周期，即从用户首次访问此应用程序中的资源（例如页）到应用程序关闭这一期间。

虽然依赖作为应用程序宿主的Web服务器(IIS)，但自身也提供了许多宿主功能。

通过的基础结构，您可以响应应用程序事件并创建自定义HTTP处理程序和HTTP模块。

中提供了对创建Web服务器控件设计器（用于可视化设计工具，例如VisualStudio）的增强支持。

使用设计器可以为控件生成设计时用户界面，这样开发人员可以在可视化设计工具中配置控件的属性和内容。

C#是一种简洁、类型安全的面向对象的语言，开发人员可以使用它来构建在.NETFramework上运行的各种安全、可靠的应用程序。

使用C#，您可以创建传统的Windows客户端应用程序、XMLWebservices、分布式组件、客户端-服务器应用程序、数据库应用程序以及很多其他类型的程序。

MicrosoftVisualC#20XX提供高级代码编辑器、方便的用户界面设计器、集成调试器和许多其他工具，以在C#语言版本2.0和.NETFramework的基础上加快应用程序的开发。

C#语法表现力强，只有不到90个关键字，而且简单易学。

C#的大括号语法使任何熟悉C、C++或Java的人都可以立即上手。

了解上述任何一种语言的开发人员通常在很短的时间内就可以开始使用C#高效地工作。

C#语法简化了C++的诸多复杂性，同时提供了很多强大的功能，例如可为空的值类型、枚举、委托、匿名方法和直接内存访问，这些都是Java所不具备的。

C#还支持泛型方法和类型，从而提供了更出色的类型安全和性能。

C#还提供了迭代器，允许集合类的实现者定义自定义的迭代行为，简化了客户端代码对它的使用。

作为一种面向对象的语言，C#支持封装、继承和多态性概念。

所有的变量和方法，包括Main方法（应用程序的入口点），都封装在类定义中。

类可能直接从一个父类继承，但它可以实现任意数量的接口。

重写父类中的虚方法的各种方法要求override关键字作为一种避免意外重定义的方式。

在C#中，结构类似于一个轻量类；它是一种堆栈分配的类型，可以实现接口，但不支持继承。

除了这些基本的面向对象的原理，C#还通过几种创新的语言结构加快了软件组件的开发，其中包括：∙封装的方法签名（称为委托），它实现了类型安全的事件通知。

∙属性(Property)，充当私有成员变量的访问器。

∙属性(Attribute)，提供关于运行时类型的声明性元数据。

内联XML文档注释。

在C#中，如果需要与其他Windows软件（如COM对象或本机Win32DLL）交互，可以通过一个称为“Interop”的过程来实现。

互操作使C#程序能够完成本机C++应用程序可以完成的几乎任何任务。

在直接内存访问必不可少的情况下，C#甚至支持指针和“不安全”代码的概念。

C#的生成过程比C和C++简单，比Java更为灵活。

没有单独的头文件，也不要求按照特定顺序声明方法和类型。

C#源文件可以定义任意数量的类、结构、接口和事件。

C#程序在.NETFramework上运行，它是Windows的一个必要组件，包括一个称为公共语言运行时(CLR)的虚拟执行系统和一组统一的类库。

CLR是Microsoft的公共语言基础结构(CLI)的一个商业实现。

CLI是一种国际标准，是用于创建语言和库在其中无缝协同工作的执行和开发环境的基础。

用C#编写的源代码被编译为一种符合CLI规范的中间语言(IL)。

IL 代码与资源（如位图和字符串）一起作为一种称为程序集的可执行文件存储在磁盘上，通常具有的扩展名为.exe或.dll。

程序集包含清单，它提供关于程序集的类型、版本、区域性和安全要求等信息。

执行C#程序时，程序集将加载到CLR中，这可能会根据清单中的信息执行不同的操作。

然后，如果符合安全要求，CLR执行实时(JIT)编译以将IL代码转换为本机机器指令。

CLR还提供与自动垃圾回收、异常处理和资源管理有关的其他服务。

由CLR执行的代码有时称为“托管代码”，它与编译为面向特定系统的本机机器语言的“非托管代码”相对应。

下图演示了C#源代码文件、基类库、程序集和CLR 的编译时与运行时的关系。

语言互操作性是.NETFramework的一个关键功能。

因为由C#编译器生成的IL代码符合公共类型规范(CTS)，因此从C#生成的IL代码可以与从VisualBasic、VisualC++、VisualJ#的.NET版本或者其他20多种符合CTS的语言中的任何一种生成的代码进行交互。

单一程序集可能包含用不同.NET语言编写的多个模块，并且类型可以相互引用，就像它们是用同一种语言编写的。

除了运行时服务，.NETFramework还包含一个由4000多个类组成的内容详尽的库，这些类被组织为命名空间，为从文件输入和输出到字符串操作、到XML分析、到Windows窗体控件的所有内容提供多种有用的功能。

典型的C#应用程序使用.NETFramework类库广泛地处理常见的“日常”任务。

外文原文： Overview is a unified Web development model that includes the services necessary for you to build enterprise-class Web applications with a minimum of coding. is part of the .NET Framework, and when coding applications you have access to classes in the .NET Framework. You can code your applications in any language compatible with the common language runtime (CLR), including Microsoft Visual Basic, C#, JScript .NET, and J#. These languages enable you to develop applications that benefit from the common language runtime, type safety, inheritance, and so on. includes:A page and controls frameworkThe compilerSecurity infrastructureState-management facilitiesApplication configurationHealth monitoring and performance featuresDebugging supportAn XML Web services frameworkExtensible hosting environment and application life cycle managementAn extensible designer environmentThe page and controls framework is a programming framework that runs on a Web server to dynamically produce and render Web pages. Web pages can be requested from any browser or client device, and renders markup (such as HTML) to the requesting browser. As a rule, you canuse the same page for multiple browsers, because renders the appropriate markup for the browser making the request. However, you can design your Web page to target a specific browser, such as Microsoft Internet Explorer 6, and take advantage of the features of that browser. supports mobile controls for Web-enabled devices such as cellular phones, handheld computers, and personal digital assistants (PDAs). Web pages are completely object-oriented. Within Web pages you can work with HTML elements using properties, methods, and events. The page framework removes the implementation details of the separation of client and server inherent in Web-based applications by presenting a unified model for responding to client events in code that runs at the server. The framework also automatically maintains the state of a page and the controls on that page during the page processing life cycle.The page and controls framework also enables you to encapsulate common UI functionality in easy-to-use, reusablecontrols. Controls are written once, can be used in many pages, and are integrated into the Web page that they are placed in during rendering.The page and controls framework also provides features to control the overall look and feel of your Web site via themes and skins. You can define themes and skins and then apply them at a page level or at a control level.In addition to themes, you can define master pages that you use to create a consistent layout for the pages in your application. A single master page defines the layout and standard behavior that you want for all the pages (or a group of pages) in your application. You can then create individual content pages that contain the page-specific content you want to display. When users request the content pages, they merge with the master page to produce output that combines the layout of the master page with the content from the content page. All code is compiled, which enables strong typing, performance optimizations, and early binding, among other benefits. Once the code has been compiled, the common languageruntime further compiles code to native code, providing improved performance. includes a compiler that will compile all your application components including pages and controls into an assembly that the hosting environment can then use to service user requests.In addition to the security features of .NET, provides an advanced security infrastructure for authenticating and authorizing user access as well as performing othersecurity-related tasks. You can authenticate users using Windows authentication supplied by IIS, or you can manage authentication using your own user database using forms authentication and membership. Additionally, you can manage the authorization to the capabilities and information of your Web application using Windows groups or your own custom role database using roles. You can easily remove, add to, or replace these schemes depending upon the needs of your application. always runs with a particular Windows identity so you can secure your application using Windows capabilities such as NTFS Access Control Lists (ACLs), database permissions, and so on. For more information on the identity of , provides intrinsic state management functionality that enables you to store information between page requests, such as customer information or the contents of a shopping cart. You can save and manage application-specific,session-specific, page-specific, user-specific, and developer-defined information. This information can be independent of any controls on the page. offers distributed state facilities, which enable you to manage state information across multiple instances of the same application on one computer or on several computers. applications use a configuration system that enables you to define configuration settings for your Web server, for a Web site, or for individual applications. You can make configuration settings at the time your applications are deployed and can add or revise configuration settings atany time with minimal impact on operational Web applications and servers. configuration settings are stored in XML-based files. Because these XML files are ASCII text files, it is simple to make configuration changes to your Web applications. You can extend the configuration scheme to suit your requirements. includes features that enable you to monitor health and performance of your application. health monitoring enables reporting of key events that provide information about the health of an application and about error conditions. These events show a combination of diagnostics and monitoring characteristics and offer a high degree of flexibility in terms of what is logged and how it is logged. supports two groups of performance counters accessible to your applications:The system performance counter groupThe application performance counter group takes advantage of the run-time debugging infrastructure to provide cross-language and cross-computerdebugging support. You can debug both managed and unmanaged objects, as well as all languages supported by the common language runtime and script languages.In addition, the page framework provides a trace mode that enables you to insert instrumentation messages into your Web pages. supports XML Web services. An XML Web service is a component containing business functionality that enables applications to exchange information across firewalls using standards like HTTP and XML messaging. XML Web services are not tied to a particular component technology orobject-calling convention. As a result, programs written in any language, using any component model, and running on any operating system can access XML Web services. includes an extensible hosting environment that controls the life cycle of an application from when a user first accesses a resource (such as a page) in the application to the point at which the application is shut down. While relies on a Web server (IIS) as an application host, provides much of the hosting functionality itself. The architecture of enables you to respond to application events and create custom HTTP handlers and HTTP modules. includes enhanced support for creating designers for Web server controls for use with a visual design tool such as Visual Studio. Designers enable you to build a design-time user interface for a control, so that developers can configure your control's properties and content in the visual design tool. Introduction to the C# Language and the .NET Framework C# is an elegant and type-safe object-oriented language that enables developers to build a wide range of secure and robust applications that run on the .NET Framework. You can use C# to create traditional Windows client applications, XML Web services, distributed components, client-server applications, database applications, and much, much more. Microsoft Visual C# 2005 provides an advanced code editor, convenient user interface designers, integrated debugger, and many other tools to facilitate rapid application development based on version 2.0 of the C# language and the .NET Framework.NoteThe Visual C# documentation assumes that you have an understanding of basic programming concepts. If you are a complete beginner, you might want to explore Visual C# Express Edition, which is available on the Web. You can also take advantage of any of several excellent books and Web resources on C# to learn practical programming skills.C# syntax is highly expressive, yet with less than 90 keywords, it is also simple and easy to learn. The curly-brace syntax of C# will be instantly recognizable to anyone familiar with C, C++ or Java. Developers who know any of these languages are typically able to begin working productively in C# within a very short time. C# syntax simplifies many of the complexities of C++ while providing powerful features such as nullable value types, enumerations, delegates, anonymous methods and direct memory access, which are not found in Java. C# also supports generic methods and types, which provide increased type safety and performance, and iterators, which enable implementers ofcollection classes to define custom iteration behaviors that are simple to use by client code.As an object-oriented language, C# supports the concepts of encapsulation, inheritance and polymorphism. All variables and methods, including the Main method, the application's entry point, are encapsulated within class definitions. A class may inherit directly from one parent class, but it may implement any number of interfaces. Methods that override virtual methods in a parent class require the override keyword as a way to avoid accidental redefinition. In C#, a struct is like a lightweight class; it is a stack-allocated type that can implement interfaces but does not support inheritance. In addition to these basic object-oriented principles, C# facilitates the development of software components through several innovative language constructs, including: Encapsulated method signatures called delegates, which enable type-safe event notifications.Properties, which serve as accessors for private member variables.Attributes, which provide declarative metadata about types at run time.Inline XML documentation comments.If you need to interact with other Windows software such as COM objects or native Win32 DLLs, you can do this in C# through a process called "Interop." Interop enables C# programs to do just about anything that a native C++ application can do. C# even supports pointers and the concept of "unsafe" code for those cases in which direct memory access is absolutely critical.The C# build process is simple compared to C and C++ and more flexible than in Java. There are no separate header files, and no requirement that methods and types be declared in a particular order. A C# source file may define any number of classes, structs, interfaces, and events.C# programs run on the .NET Framework, an integral component of Windows that includes a virtual execution system called the common language runtime (CLR) and a unified set of class libraries. The CLR is Microsoft's commercial implementationof the common language infrastructure (CLI), an international standard that is the basis for creating execution and development environments in which languages and libraries work together seamlessly.Source code written in C# is compiled into an intermediate language (IL) that conforms to the CLI specification. The IL code, along with resources such as bitmaps and strings, is stored on disk in an executable file called an assembly, typically with an extension of .exe or .dll. An assembly contains a manifest that provides information on the assembly's types, version, culture, and security requirements.When the C# program is executed, the assembly is loaded into the CLR, which might take various actions based on the information in the manifest. Then, if the security requirements are met, the CLR performs just in time (JIT) compilation to convert the IL code into native machine instructions. The CLR also provides other services related to automatic garbage collection, exception handling, andresource management. Code that is executed by the CLR is sometimes referred to as "managed code," in contrast to "unmanaged code" which is compiled into native machine language that targets a specific system. The following diagram illustrates the compile-time and run time relationships of C# source code files, the base class libraries, assemblies, and the CLR.Language interoperability is a key feature of the .NET Framework. Because the IL code produced by the C# compiler conforms to the Common Type Specification (CTS), IL codegenerated from C# can interact with code that was generated from the .NET versions of Visual Basic, Visual C++, Visual J#, or any of more than 20 other CTS-compliant languages. A single assembly may contain multiple modules written indifferent .NET languages, and the types can reference each other just as if they were written in the same language.In addition to the run time services, the .NET Framework also includes an extensive library of over 4000 classes organized into namespaces that provide a wide variety of useful functionality for everything from file input and output to string manipulation to XML parsing, to Windows Forms controls. The typical C# application uses the .NET Framework class library extensively to handle common "plumbing" chores.篇二：毕业论文外文翻译First, the development of simulatorThroughout nearly two decades of national development process of simulation technology, according to simulator technology to be used to divide the domestic about the design of simulators can be divided into the following periods:(1) the late 70s in the mid -80The technology during this period was mainly the development of simulation systems, now is not high technology, the user request is not high.(2) the late 80's during the late -90The main use of this period with an emulation function Winbond chip production, the technology is called Bondout. Using this chip to greatly simplify the design of emulator, so the standard of domestic emulator with a large increase can be largely occupied by the user resources.Simulation performance is due to the increase in domestic production in the emulator nearly 10 years no progress has been produced using this model. Although individual companies havealso tried other techniques to improve the simulation of the standard, for example, HOOKS technology, but because of their technical limitations did not succeed. Instead abroad earlier simulator technology used HOOKS, HOOKS at the initial stage due to the complexity of the technology itself, simulation performance and price as the domestic use of the simulator Bondout.With the development of IC technology, the domestic production HOOKS technology is ripe, but several major domestic manufacturers also Bondout technologies intoxicated.(3)After 2000 yearChina in 2000 emulator period changes in the market, the largest, the most striking change is the Winbond W78958 chip simulation of the production.Winbond W78958 chip during the design stage, the internal functions of the simulation only to the production simulator to simulator manufacturers in order to better promote the W78958. After several years of change, however, W78958 simulator evolved into the use of a simulation of the ASICrather than using the standard chip, the scope of use is limited to domestic and 20,000 a year less than the amount the company also contributed to the Winbond After entering in 2002 announced that it would stop production of the chip.W78958 production, the domestic manufacturers simulator in a very embarrassing situation. W78958 use at home as a result of nearly 10 years, the domestic user base is very large, these users will not be able to receive continued support, especially maintenance. In addition, the domestic focus in the W78958 on the technical work done can not be renewed and improved, many people in the industry that the industry will face a simulator to set up or re-shuffle of the situation.HOOKS simulator technology is no doubt W78958 manufacturers after the loss of alternatives, but the absence of long-term follow-up and attention, not the short term the majority of manufacturers of complex HOOKS mature technology products. Experts believe that the overall simulator manufacturers in transition may need 2-3 years of the cycle, and there is considerable simulator manufacturers will be eliminated, themarket will have mainly concentrated in a few simulator manufacturers.Chip manufacturers as more and more resources getting stronger and stronger, with chip to chip compatible simulation simulation model, there is incomplete coverage of resources (such as additional ports, additional external interrupt), address different distribution (such as the P4 I ), to operate in different ways (such as EXTRAM, WTD) and other shortcomings. Simulation with a dedicated chip to chip or Philips simulation of more than 20 manufacturers more than 400 kinds of chips, the first simulation required more and more, so there's a new generation of simulator technology.But a new generation of patented technology makes the simulator there is no economic power can not afford to buy the beginners. Second, the development trend of single-chipIt can be said now is a single-chip opinions of the period, the world's major chip manufacturing companies have introduced their own single-chip, from the 8, 16-32, just to name a few, everything, it is compatible with mainstream C51 series of ,there are not compatible, but they own each other into each other, for SCM applications world wide.Throughout the development process of single-chip, you can indicate the development trend of single-chip, generally are: 1. Low-power CMOS technologyMCS-51 series of 8031 introduced the power consumption of 630mW, and now widespread in the single-chip 100mW or so, with the growing demand for low-power single-chip, and now all the basic single-chip manufacturers are use of CMOS (complementary metal oxide semiconductor process). As the 80C51 on the use of HMOS (high density metal oxide semiconductor process) and CHMOS (high-density complementary metal oxide semiconductor process). Although the CMOS low power consumption, but because of its physical characteristics to determine its speed is not high enough, and then CHMOS with high-speed and low power consumption characteristics of these features, it is more suitable in low power consumption, as battery-powered applications . Therefore, the process for some time to come will be the main way to develop single-chip2. Of micro-chipNow are generally in conventional single-chip will be the central processing unit (CPU), random access data storage (RAM), read-only program memory (ROM), parallel and serial communication interface, system interruption, timing circuits, integrated circuit clock in a single chip, enhancedsingle-chip integration, such as A / D converter, PMW (pulse width modulation circuit), WDT (watchdog), and some will be single-chip LCD (LCD) driver integrated circuits are in a single chip, this unit includes single-chip circuits on more and more powerful features. Even single-chip manufacturers can also be tailored in accordance with the requirements of users, to create a single chip with its own chip characteristics. In addition, the product is now the universal demand of small size, light weight, which requires in addition to powerfulsingle-chip and low power consumption, but also its smaller size. Many now have a variety of single-chip package, which SMD (surface mount) is gaining popularity, making the systemconstituted by the single-chip micro-moving in the direction of development.3. The mainstream and multi-species coexistenceAlthough a wide variety of single-chip, unique, but still single-chip microcomputer 80C51 prevailing at the core, compatible with its structure and command system of PHILIPS products, ATMEL company's products and China Taiwan's Winbond Series Single machine. Therefore, single-chip microcomputer as the core C8051 occupied the half. Microchip's PIC and reduced instruction set (RISC) has a strong development momentum of China Taiwan HOLTEK single-chip companies in recent years, increasing production, with its high quality low-cost advantages, to occupy a certain market share. MOTOROLA addition to the company's products, several large companies in Japan's exclusive single-chip microcomputer. A certain period of time, this situation will continue to be upheld, there will not be a single-chip monopoly domination, taking the complementary interdependence, complementarity and common development.Third, the technical development of digital single-chip The number of single-chip technology is reflected in the internal structure, power consumption, as well as the external voltage level on the manufacturing process. In these areas, more typically describes the number of single-chip level. At the moment, users need more and more single-chip, but getting higher and higher requirements. The following four areas on which the technological progress that the situation of single-chip microcomputer.1, the internal structure of the progressSingle-chip integrated in-house has been an increasing number of parts, these parts include commonly used circuits, such as: timers, comparators, A / D converter, D / A converters, serial communication interface, Watchdog circuit , LCD controller. Some single-chip control network in order to constitute or form a local network, the internal local area network control module contains the CAN. For example, Infineon's C 505C, C515C, C167CR, C167CS-32FM, 81C90; Motorola's 68HC08AZ series. Especially in the C167CS-32FM in single-chip, also contains two internal CAN.Therefore, such single-chip networks are very easy to pose. Especially in the control system more complicated, the constitute a very useful control network. In order to facilitate the use of variable frequency control ofsingle-chip, to form the most cost-effective embedded control systems. Some set up a special single-chip internal control for variable frequency pulse width modulation control circuit, the single-chip microcomputer has Fujitsu's MB89850 series of companies, MB89860 series; Motorola's MC68HC08MR16, MR24 and so on. In these single-chip, the pulse width modulation circuit 6-channel output, can produce three-phase PWM AC voltage, and internal control with dead-zone function.Of particular note are: It is now some have adopted theso-called single-chip trinuclear (TrCore) structure. This is a system-level chips built on the (System on a chip) on the structure of the concept. This single-chip consists of three core components: a micro-controller and the DSP core, a data and program memory is nuclear and the last one is the external application specific integrated circuit (ASIC). The mostimportant feature of this single-chip is the DSP and microcontroller at the same time do so in a chip. Although the structure definition, DSP is a type of single-chip, but its role is mainly seen in the high-speed computing and special treatment as above, such as fast Fourier transform. It combines traditional single-chip integrated single-chip greatly enhanced functionality. This is the single-chip, one of the greatest progress. This single-chip microcomputer has the most typical Infineon's TC10GP; Hitachi's SH7410, SH7612 and so on. These are high-end single-chip single-chip, MCU is 32 and the DSP 16 or 32-bit structure, the frequency of 60MHz or more generally.2, power consumption, packaging and power supply voltage of the progressNow the new single-chip power consumption is getting smaller and smaller, especially the many single-chip are a variety of work settings, which include waiting, suspended, sleep, idle, power-saving mode and so on. P87LPC762 single-chip company Philips is a very typical example, in idle, the power。