创建简单的公式来在 Excel 电子表格中执行乘除运算。 可以将一个单元格中的两个或更多个数字相乘，或者使用单元格引用将数字相乘和相除。 Excel 中的所有公式都以等号 (=) 开头。

了解如何向图表添加图例、检索缺少的图例以及调整其设置。 在 Excel 中添加、编辑或删除图表图例。 大多数图表使用某种图例来帮助读者了解图表数据。 每当在 Excel 中创建图表时，都会同时自动生成图表的图例。

If you see a gray OneDrive icon, this means you are not signed in. If you cannot sign in to your OneDrive sync app, or the sync app says OneDrive is not connected, follow the steps below.

Enable and disable your touchscreen in Windows 10. In the search box on the taskbar, type device manager, then select Device Manager.

Use the Windows Quick Assist app to get help with a computer problem from family or friends or help them out. Quick Assist uses a remote connection, so remember to only use it with people you trust, since they can see your computer screen or control your PC (if you allow it).

Learn how to turn off or uninstall OneDrive. OneDrive is built in to some versions of Windows and can't be uninstalled.

Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.

从桌面版 Outlook 连接电子邮件时出现问题？ 请按照以下步骤操作，使 Outlook 诊断并修复 Outlook 邮件配置文件中可能导致此问题的错误。 你有Microsoft 365 帐户吗？

Learn which languages are supported in Narrator in Windows and how to adjust your Narrator Settings.

Learn about HDR capabilities in Windows 11 to bring a wider range of colors and details to your display.