ドロップダウン リストの項目を追加または削除する - Microsoft サポート
Excel の表に基づいたドロップダウン リストを編集する. ソースの一覧を Excel の表として設定する場合、一覧からアイテムを追加または削除するだけで、自動的に関連するドロップダウンが更新されます。. 項目を追加する場合は、一覧の最後に移動して、新しい項目を入力します。
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
在 Excel 中将 IF 与 AND、OR 和 NOT 函数配合使用 - Microsoft 支持
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 函数成对使用。
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App, Excel for Windows Phone 10
Fix USB-C problems in Windows - Microsoft Support
USB-C overview. With a USB-C connection, you can charge your Windows 11 PC, and you can also connect to other USB Type-C devices such as mobile phones, docking stations, display adapters, and other devices that have a USB-C port.
Device protection in Windows Security - Microsoft Support
Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.
How to download and install the latest printer drivers
Most drivers are self-installing. After you download one, double-click (or double-tap) the file to begin installing. Then follow these steps to remove and reinstall the printer. Right-click Start , then select Settings > Bluetooth & devices > Printers & scanners. Open Printers & scanners
Manage the input and display language settings in Windows
To switch the keyboard layout you're using in Windows 10, press and hold the Windows key and then repeatedly press the Spacebar to cycle through all your installed keyboards. (If this doesn't do anything, it means you have only one installed.)
更改 Office 产品密钥 - Microsoft 支持
适用于多个 Office 版本的最佳实践. 如果购买了 Office 的多个副本，并使用相同的安装按钮来在多台电脑上安装 Office，在其它电脑上的激活将会失败。 发生这种情况是因为每个“安装”按钮只能与唯一的产品密钥关联，该产品密钥只能安装在一台电脑上。 要解决 ...
Applies To:
OneNote for Microsoft 365, Visio Plan 2, OneNote for Microsoft 365 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2021 for Mac, OneNote 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016
Windows Media Player で CD または DVD を再生する - Microsoft サポート
注: Player ライブラリで DVD または VCD の再生を開始した場合は、自動的にプレイ ビュー モードに切り替わります。 ブルーレイ ディスク形式は、Windows Media Player ではサポートされていません。 Blu-ray ディスクを再生するには、blu-ray 再生をサポートする Microsoft 以外のプログラムと、Blu-ray ...
Change your app recommendation settings in Windows
Next to Choose where to get apps, select one of the available options.To see recommendations, select Anywhere, but let me know if there's a comparable app in the Microsoft Store.. To stop seeing app recommendations, select Anywhere.
Install a printer in Windows - Microsoft Support
Wait for it to find nearby printers, then choose the one you want to use, and select Add device.If you want to remove the printer later, select it, and then select Remove.