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。 可按 enter 获取总计 39787。

Antes de comenzar. Asegúrate de que el dispositivo en el que quieres instalar Windows 11 cumple los requisitos mínimos del sistema.Si el dispositivo está ejecutando actualmente Windows 10, te recomendamos que compruebes los requisitos mínimos del sistema con la aplicación Comprobación de estado del PC.No se recomienda instalar Windows 11 en un dispositivo que no cumpla los requisitos.

查找 Windows 7 或 Windows 8.1 的产品密钥. 卸载或重新安装 Windows 7 或 Windows 8.1 时，通常需要产品密钥。 通常，如果购买的是实物 Windows 拷贝，产品密钥应该在标签上或者在 Windows 随附包装盒中的卡上。

Lorsque vous êtes prêt à mettre en veille votre PC, appuyez sur le bouton d’alimentation de votre ordinateur de bureau, de votre tablette ou de votre ordinateur portable, ou refermez simplement le capot de votre ordinateur portable.

Windows Update checks for updated drivers and software for your devices and install them automatically. Keeping Windows Update on is a good way to make sure your devices continues to work properly and you get the best experience with them.

Filtering for unique values and removing duplicate values are two similar tasks, since the objective is to present a list of unique values. There is a critical difference, however: When you filter for unique values, the duplicate values are only hidden temporarily.

Free screen recorder with Microsoft 365 work or school account. Record your screen or create a new video in Microsoft Stream (on SharePoint), including webcam, background removal, inking, stickers, music, and text. Instantly share your video for others to view and get analytics.

Add a font. Download the font files. These often come compressed in .zip folders.In one .zip folder, you might find several variations on the same font, such as “light” and “heavy.”

Tip: If you've invited an external participant to be a guest speaker and you want to further limit their access to the meeting chat, you can schedule their presentation as the meeting's last session.The meeting organizer or moderator can then monitor the participant list during the meeting, and if the speaker joins outside their allocated time, they can manually remove them.

Note: If you installed OneNote before you install and activate Microsoft 365 or Office 2019, then the end-user license that appears in OneNote will display as “Home and Student.”As soon as you’ve activated your edition of Microsoft 365 or Office 2019 and then restart OneNote, your license will be applied to OneNote, even though the default license for it may still be displayed as “Home ...