DirectX is a set of components in Windows that allows software, primarily and especially games, to work directly with your video and audio hardware. Games that use DirectX can use multimedia accelerator features built-in to your hardware more efficiently which improves your overall multimedia experience.

有些时候，你需要检查单元格是否为空白，通常是因为你可能不希望公式没有输入值就显示结果。. 此情况下，将 IF 与 ISBLANK 函数搭配使用：. 这表示如果（D2 为空白，则返回“Blank”，否则，将返回“Not Blank”）。. 还可以针对“Not Blank”条件同样轻松地使用 ...

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In the left margin next to your text, select the Copilot icon. From the menu, select Visualize as a table to have Copilot turn the text into a table. You can select Regenerate to receive a new table or Discard to remove the generated table. Fine tune the table by entering details into the Copilot compose box about what to adjust in the table ...

Tip: In Windows 7, you can synchronize your computer clock with an Internet time server to keep the computer clock up to date.To do this, select the date or time in the bottom right-hand corner of your screen, and then select Change date and time settings.Select the Internet Time tab, select Change settings, select Synchronize with an Internet time server, and then select Update now.

Customize your lock screen status. Select Start > Settings . Select Personalization > Lock screen. Select the list for Lock screen status and select an app that can show detailed status on the lock screen. You can also select None if you don't want to see detailed status on the lock screen. Note: Lock screen status will be available when you ...

In some editions of Windows 10, it's included as an optional feature that you can enable. 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.

Select the text for which you want to change the case. Go to Home > Change case . Do one of the following: To capitalize the first letter of a sentence and leave all other letters as lowercase, select Sentence case. To exclude capital letters from your text, select lowercase. To capitalize all of the letters, select UPPERCASE.

This might also occur if the device has been moved and the lighting conditions are dramatically different in the new location. To improve recognition, select Start > Settings > Accounts > Sign-in options > Facial recognition (Windows Hello) , and then select Improve recognition. If you are having a problem with Windows Hello facial recognition ...

sum_range 可选。要添加的实际单元格，如果要添加在范围参数指定以外的其他单元格。如果省略sum_range参数，Excel就会添加范围参数中指定的单元格（与应用标准的单元格相同）。 Sum_range 的大小和形状应该与范围相同。如果不这样做，性能可能会受到 ...