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This download installs Visual Studio 2010 Service Pack 1 (SP1). This service pack release addresses issues that were found through a combination of customer and partner feedback, as well as internal testing. These service packs offer Visual Studio users improvements in responsiveness and stability, as well as completes some high-impact scenarios requested by customers. The full list of updates included in this service pack can be found here.

Important:
Visual Studio 2010 Service Pack 1 (SP1) will upgrade all editions and languages of Visual Studio 2010 you have already installed. If you install any other editions or languages of Visual Studio 2010 after SP1, you must reapply SP1.
If you installed Visual Studio 2010 Service Pack 1 Beta, you should not uninstall it before installing this release of SP1.
Prior to installation, you should carefully review the readme to be aware of any known issues with this release.
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MySQL是现在最流行的开放源代码数据库.绝大多数PHP网站的数据库后台都是采用这一数据库.是一个多线程的,结构化查询语言（SQL）数据库服务器.MySQL 的执行性能非常高,运行速度非常快,并非常容易使用.是一个非常捧的数据库.

近日，关于Oracle收购Sun后MySQL将如何发展的问题可谓是热点新闻，很高兴能够看到这个时候mysql还能出个新版 本，而原来的 MySQL 5.4 在官网上已经没有链接，看来是升级为 5.5 版本了，官网上同时还提供一个从 5.4 升级到 5.5 的指南。MySQL 5.5.0是所谓的里程碑版本，这次带来了一些有趣的东西，按照重要程度（我主观上的）列一下:
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QQ词典是腾讯公司推出的一款桌面词典软件。QQ词典以其清爽的界面、丰富的词库，为您提供海量词汇的丰富释义，包括词语的基本释义、网络释义和例句、百科内容等。同时，QQ词典强大、灵活的屏幕取词功能，带给您无干扰的全新取词感受。

版本最新特性:
1.增加生词本，帮助记录生词。
2.首页增加生词提醒功能，按照曲线提醒记忆生词。
3.支持生词本导出为txt格式。
4.支持其它常用词典软件的生词本导入至QQ词典。
5.支持设置字体大小。
6.单击候选栏单词时，显示详细解释结果。
7.解决了热键设置为无时，无法保存的问题。
8.解决了Win7下查询单词时，程序崩溃的问题。
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Microsoft Mathematics provides a set of mathematical tools that help students get school work done quickly and easily. With Microsoft Mathematics, students can learn to solve equations step-by-step while gaining a better understanding of fundamental concepts in pre-algebra, algebra, trigonometry, physics, chemistry, and calculus.

Microsoft Mathematics includes a full-featured graphing calculator that’s designed to work just like a handheld calculator. Additional math tools help you evaluate triangles, convert from one system of units to another, and solve systems of equations.
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Unleash your Creativity!
The Visual Studio 2010 Express is a set of free tools which offers you an exciting experience with the new integrated development environment, a new editor built in Windows Presentation Foundation (WPF) and support for the new .NET Framework 4.

Powerful Set of Free Tools
Microsoft Visual Basic 2010 Express is ideal for the developer learning to program on Microsoft Windows.
Microsoft Visual C# 2010 Express offers a great combination of power and productivity for Windows developers building on .NET.
Microsoft Visual C++ 2010 Express provides developers the horsepower with a finer degree of control than the other Visual Studio Express productions.
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Adobe Digital Editions 软件提供一种引人入胜的方式, 帮助您查看和管理 eBooks 和其它数字出版物。使用它下载和购买可在线或离线阅读的数字内容。将受到版权保护的 eBooks 从您的 PC 传输到其它计算机或设备。将 eBooks 组织到一个自定库和多个注释页。Digital Editions 还支持业界标准 eBook 格式, 包括 PDF/A 和 EPUB。

主要功能：
为数字阅读度身定制的界面
充分利用简洁、有序的界面, 它为阅读数字出版物度身定制。使用阅读视图查看书签、批注和目录。以双页、单页或适合宽度视图显示 PDF 文件, 也可以指定自定方式。您还可以放大缩小 EPUB 内容的文本大小。
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Microsoft SQL Server 2005 Service Pack 4 (SP4) 现在可供下载。SQL Server 2005 Service Pack 是依次递增的，此 Service Pack 可以将所有服务级别的 SQL Server 2005 升级到 SP4。您可以使用这些包升级下列任意 SQL Server 2005 版本：
* Enterprise
* Enterprise Evaluation
* Developer
* Standard
* Workgroup

SQL Server 2005 SP4 包括 SQL Server 2005 SP3 累积更新 1 至 11、客户请求的修补程序以及支持 DAC 操作的 SQL Server 2005 SP4 数据库引擎实例。
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此下载将安装一组组件，非 Microsoft Office 应用程序可以使用它们从 2010 Office system 文件中读取数据以及向这些文件中写入数据，例如 Microsoft Access 2010 （mdb 和 accdb）文件以及 Microsoft Excel 2010 （xls、xlsx 和 xlsb）文件。 还支持与文本文件建立连接。
此外，还会安装 ODBC 和 OLEDB 驱动程序，供应用程序开发人员在开发与 Office 文件格式连接的应用程序时使用。

1. 如果您是应用程序用户，请查阅应用程序文档以获得有关如何使用相应的驱动程序的详细信息。
2. 如果您是使用 OLEDB 的应用程序开发人员，请将 ConnectionString 属性的 Provider 参数设置为“Microsoft.ACE.OLEDB.14.0”
◦如果要连接到 Microsoft Office Excel 数据，请将“Excel 14.0”添加到 OLEDB 连接字符串的扩展属性中。
3. 如果您是使用 ODBC 连接到 Microsoft Office Access 数据的应用程序开发人员，请将连接字符串设置为“Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=path to mdb/accdb file”
4. 如果您是使用 ODBC 连接到 Microsoft Office Excel 数据的应用程序开发人员，请将连接字符串设置为“Driver={Microsoft Excel Driver (*.xls, *.xlsx, *.xlsm, *.xlsb)};DBQ=path to xls/xlsx/xlsm/xlsb file”
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With the XPS Essentials Pack you can quickly begin reading and generating XPS Documents. It contains XPS Viewer EP to read XPS Documents and the Microsoft XPS Document Writer to output files to the XPS Document format

Additionally, the XPS Essentials Pack download includes providers to enable the iPreview and iFilter capabilities found in many Windows applications. Windows shell handlers are also included to enable thumbnail views and file properties for XPS Documents.
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This release enables Visual Basic developers to create Silverlight applications for Windows Phone 7 using the final version of the Windows Phone Developer Tools.

System Requirements
* Supported Operating Systems:Windows 7;Windows Vista
* Visual Studio 2010 Professional, Premium, or Ultimate
* Windows Phone Developer Tools RTW
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