SUMIF function - Microsoft Support
If you want, you can apply the criteria to one range and sum the corresponding values in a different range. For example, the formula =SUMIF(B2:B5, "John", C2:C5) sums only the values in the range C2:C5, where the corresponding cells in the range B2:B5 equal "John." To sum cells based on multiple criteria, see SUMIFS function.
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
Windows での黒または空白の画面のトラブルシューティング - Microsoft サポート
Windows デバイスで黒または空白の画面が表示される場合は、次の操作を試してください。. 画面をスリープ解除するには、次のいずれかのキーボード ショートカットを使用します。. Windows ロゴ キー + P を使用してプレゼンテーションまたはプロジェクション ...
Upgrade to Windows 10 Pro - Microsoft Support
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. Get Windows 10 Pro.
Secure messages by using a digital signature - Microsoft Support
In the message, on the Options tab, in the Permission group, click Sign Message. In the message, click Options. In the More Options group, click the dialog box launcher in the lower-right corner. Click Security Settings, and then select the Add digital signature to this message check box. Click OK, and then click Close.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013
使用“自动求和”对数字求和 - Microsoft 支持
如果需要对一列或一行数字求和，请让 Excel 为你计算。 选择要求和的数字旁边的单元格，在“开始”选项卡上选择“自动求和”，按 Enter，即可完成。 选择“自动求和”时，Excel 会自动输入一个公式 (，该公式使用 SUM 函数) 对数字求和。 下面是一个示例。
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 for iPad, Excel for iPhone, Excel for Android tablets, Excel for Android phones
保养 Surface 电池 - Microsoft 支持
使用电池时，应避免一些情况，因为它们可能导致更快的老化：. 避免在极端高温下使用或充电： 在高温下充电或运行的设备将导致锂电池加速老化和电池充电容量永久丢失。. Surface 设备设计为在 0°C-35°C) 0°C-35°C (32°F 到 95°F 之间工作，因此请勿将 Surface 挡在 ...
CONCATENATE function - Microsoft Support
Use the TEXT function to combine and format strings. The TEXT function converts a numeric value to text and combines numbers with text or symbols. For example, if cell A1 contains the number 23.5, you can use the following formula to format the number as a dollar amount: =TEXT (A1,"$0.00") Result: $23.50.
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
Create a form in Word that users can complete or print
In Word, you can create a form that others can fill out and save or print. To do this, you will start with baseline content in a document, potentially via a form template. Then you can add content controls for elements such as check boxes, text boxes, date pickers, and drop-down lists. Optionally, these content controls can be linked to ...
Applies To:
Word for Microsoft 365, Word for Microsoft 365 for Mac, Word 2021, Word 2021 for Mac, Word 2019, Word 2019 for Mac, Word 2016
Open Device Manager - Microsoft Support
Windows 10. In the search box on the taskbar, type device manager, then select Device Manager from the menu. Open Device Manager.
キーボードの使い方 - Microsoft サポート
これらのキーを単独で使用するか、または他のキーと組み合わせて使うことで、特定の操作を実行します。. 最も頻繁に使用されるコントロール キーは、Ctrl キー、Alt キー、Windows ロゴ キー、 Esc キーです。. ファンクション キー 。. 特定の操作を実行する ...