- 1、本文档共63页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
查看更多
Module C Windows 2000.ppt
Module C: Windows 2000 Module C: Windows 2000 History Design Principles System Components Environmental Subsystems File system Networking Programmer Interface Windows 2000 32-bit preemptive multitasking operating system for Intel microprocessors. Key goals for the system: portability security POSIX compliance multiprocessor support extensibility international support compatibility with MS-DOS and MS-Windows applications. Uses a micro-kernel architecture. Available in four versions, Professional, Server, Advanced Server, National Server. In 1996, more NT server licenses were sold than UNIX licenses History In 1988, Microsoft decided to develop a “new technology” (NT) portable operating system that supported both the OS/2 and POSIX APIs. Originally, NT was supposed to use the OS/2 API as its native environment but during development NT was changed to use the Win32 API, reflecting the popularity of Windows 3.0. Design Principles Extensibility — layered architecture. Executive, which runs in protected mode, provides the basic system services. On top of the executive, several server subsystems operate in user mode. Modular structure allows additional environmental subsystems to be added without affecting the executive. Portability — 2000 can be moved from on hardware architecture to another with relatively few changes. Written in C and C++. Processor-dependent code is isolated in a dynamic link library (DLL) called the “hardware abstraction layer” (HAL). Design Principles (Cont.) Reliability — 2000 uses hardware protection for virtual memory, and software protection mechanisms for operating system resources. Compatibility — applications that follow the IEEE 1003.1 (POSIX) standard can be complied to run on 2000 without changing the source code. Performance — 2000 subsystems can communicate with one another via high-performance message passing. Preemption of low priority threads enables the system to respond quickly to external events. Designed for symmetrical
您可能关注的文档
- Access Windows Embedded CE 6.0 Source Code.ppt
- ADM390 Microsoft Windows Crash Dump Analysis.ppt
- Administration Sécurité Sous windows et linux.ppt
- Administration Windows Technologies NT.ppt
- Adobe Flash 9.ppt
- Adobe Photoshop 7.0 Design Professional.ppt
- Advanced Windows 7 Deployment with MDT 2010.ppt
- Advanced Windows Programming with MFC.ppt
- An Interactive Tutorial for SPSS 10.0 for Windows.ppt
- An Introduction to IPv6 in Windows Vista.ppt
文档评论(0)