IF 函数 - 嵌套公式和避免错误. Microsoft 365 专属 Excel Microsoft 365 Mac 版专属 Excel Excel 网页版 更多... IF 函数允许通过测试某个条件并返回 True 或 False 的结果，从而对某个值和预期值进行逻辑比较。. 因此 IF 语句可能有两个结果。. 第一个结果是比较结果为 True，第二 ...

Securely browse the web in Microsoft Edge. With online threats getting more advanced day by day, it is important to prioritize the safety of your web browsing. Microsoft Edge offers several features and practices that can enhance your online security and protect your personal information. Follow these guidelines to browse the web securely in ...

Open and run DxDiag.exe. This tool is used to collect info about devices to help troubleshoot problems with DirectX sound and video. A support person might ask for this info, or you might post it in a forum when you ask for help. In Windows, select Start and enter dxdiag into the search box on the taskbar. Select dxdiag from the results. In the ...

To do that, select the Start button, then select Settings > Apps > Apps & features > Manage optional features > Add a feature > Windows Media Player, and select Install. Enable Windows Media Player. DVD playback isn't included. Go to the DVD playback for Windows page to find out how to add DVD playback to Windows 10.

If your OneDrive is full, we will send you an email notification and you will see the following OneDrive icon in your notification or menu bar: The reasons behind this and steps needed will depend on how you sign in. Personal Microsoft account Work or school account.

Recover lost or deleted files. Windows 7. Note: If you've recently updated Windows 10 and are having problems finding files, see Find lost files after the upgrade to Windows 10. If you can't find a file on your computer or you accidently modified or deleted a file, you can restore it from a backup (if you're using Windows backup) or you can try ...

Types of info. What will be deleted. Where it's stored. Browsing history. The URLs of sites you've visited, and the dates and times of each visit. On your device (or, if sync is turned on, across your synced devices)

Microsoft 365 provides powerful tools to help organize you and your family's lives. Empower you and your family through the Microsoft 365 Family subscription and learn how to create family calendars, share notes with a family notebook on OneDrive, and connect with your family on Microsoft Teams.

On another Windows PC or other device, connect to Wi-Fi as you normally would, and enter your Wi-Fi password when prompted. For more info about connecting to Wi-Fi, see Connect to a Wi-Fi network in Windows.

Apply or remove cell borders on a worksheet. By using predefined border styles, you can quickly add a border around cells or ranges of cells. If predefined cell borders do not meet your needs, you can create a custom border. Note: Cell borders that you apply appear on printed pages. If you do not use cell borders but want worksheet gridline ...