可以使用 简单的公式对) 一组单元格 (区域中的数字求和，但在处理多个数字时 ，SUM 函数 更易于使用。 例如，=SUM (A2：A6) 出现键入错误的可能性小于 =A2+A3+A4+A5+A6。 下面是使用两个单元格区域的公式： =SUM (A2：A4，C2：C3) 对区域 A2：A4 和 C2：C3 中的数字求和。

About Windows 11 in S mode. Windows 11 in S mode is a version of Windows 11 that's streamlined for security and performance, while providing a familiar Windows experience. To increase security, it allows only apps from Microsoft Store, and requires Microsoft Edge for safe browsing.

Windows 10. 若要启动应用，请选择“ 开始 ”，然后从应用列表中选择“ 时钟 ”，或在搜索框中键入其名称。. 即使应用关闭或设备处于锁定状态，闹钟和计时器也能正常工作。. 如果看到警告，通知仅在设备处于唤醒状态时显示，请确保设备未进入睡眠状态， (转 ...

Найдите ключ продукта для Windows 10 или Windows 11. В зависимости от того, как вы получили копию Windows 10 или Windows 11, для ее активации потребуется 25-значный ключ продукта или цифровая лицензия. Цифровая ...

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Use a USB cable to connect your device to the PC. In the search box on the taskbar, type photos and then select the Photos app from the results. Select Import from the app bar. Your devices will automatically show under Import. Choose your device from the list of connected devices. Wait for the content to load from your device.

Download a calendar template: Browse through the calendar templates, choose an Excel calendar template that is best for you. Click the Download button on the template page, open the template file in Excel, and then edit and save your calendar. Note: By default, a template file download goes into the Downloads folder on your computer.

Taskbar icon. Apps. Check your version of Teams. For Microsoft Teams (free), select Settings and more > Settings > About Teams , then look under Version to see if you have the latest version or need to Update now. For Microsoft Teams (work or school), select Settings and more > About, then look under Version.

如果文件资源管理器不能打开或启动，进行修复. 注意: 文件资源管理器工具与 Microsoft Edge 不同。. 若要打开 Microsoft Edge，请在任务栏上的搜索框中键入 Microsoft Edge ，然后从结果中选择它。. 若要在Windows 11中打开文件资源管理器，请在任务栏上选择“文件资源 ...

Upgrade to Windows 10 Pro. Windows 10. Windows 10 Pro offers more advanced security and business networking features, including: BitLocker Drive Encryption. Remote Desktop. The ability to join a domain or Azure Active Directory. If you're running Windows 10 Home, select Get Windows 10 Pro to upgrade your device.