获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

如果你有多个要插入的 5 毫米插孔（尤其是在环绕音响系统上），请确保所有电线和线缆都插入到了正确的插孔中。 如果不清楚哪个插孔与哪根电线匹配，请咨询你的硬件制造商，或者一次一个地尝试最明显的输出，然后查看它们是否正常工作。

如何兑换礼品卡、Xbox 下载代码或令牌 Microsoft 和 Xbox 礼品卡以及下载代码和令牌的工作方式相同：兑换到 Microsoft 帐户后，可以在 Windows 或 Xbox 上将余额用于Microsoft Store 在线商店，并且可以获取最新应用、游戏、电影、电视节目以及 Surface、Xbox ...

Tips: While signing in, select Yes at the "Stay signed in?" prompt if you want to go straight to your mailbox next time (not recommended for shared computers). Alternatively, check the "Don't show this again" box and select No to be prompted for your password each time.. If you can't sign in, or have forgotten your username or password, use our sign-in troubleshooter.

本页提供 Microsoft 客服的电话号码。 国家/地区 国家/地区代码 电话号码 语言 安圭拉 不适用 +1 1 866 993 9330 305 418 9136

Note: The Wireless Display app is available on devices running Windows 11 version 22H2 and newer.If you're running an earlier version of Windows, launch the Connect app by entering connect in the search box on the taskbar, and selecting Connect in the list of results. To find out which version of Windows you're running, see Which version of Windows operating system am I running?

通过桌面应用程序或 Web 浏览器登录 Office 或 Microsoft 365。 Microsoft 365 专属 Excel Microsoft 365 专属 Word Microsoft 365 专属 Outlook Microsoft 365 专属 PowerPoint Microsoft 365 专属 Access OneNote for Microsoft 365 Project Online 桌面客户端 Microsoft 365 专属 Publisher Visio 计划 2 Microsoft 365 Mac 版专属 Excel Microsoft 365 Mac 版专属 Word ...

Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update.

Note: The steps to install the 2019, 2016, or 2013 versions of Office Professional Plus, Office Standard, or a stand-alone app such as Word or Project might be different if you got Microsoft 365 through one of the following: Microsoft Workplace Discount Program (formerly known as Home Use Program): If you bought Microsoft 365 for personal use through your company, see Install Office through ...

但如果需要测试多个条件，例如我们假设所有条件都需要为 True 或 False (AND)，或只有一个条件需要为 True 或 False (OR)，或者如果想要检查某个条件是否不 (NOT) 符合你的条件，这时该怎么做呢？这三个函数均可以单独使用，但它们更常见于与 IF 函数成对