AND 和 OR 函数最多可支持 255 个单独条件，但并不建议使用多个条件，因为构建、测试和维护复杂的嵌套公式是非常难的。. NOT 函数仅采用一个条件。. 下面是根据它们的逻辑写出的公式：. 公式. 说明. =IF (AND (A2>0,B2<100),TRUE, FALSE) 如果 A2 (25) 大于 0，并且 B2 (75 ...

Tips: While signing in, select Yes at the "Stay signed in?" prompt if you want to go straight to your mailbox next time (not recommended for shared computers). Alternatively, check the "Don't show this again" box and select No to be prompted for your password each time.. If you can't sign in, or have forgotten your username or password, use our sign-in troubleshooter.

选择每个下载链接并将其保存到电脑。 准备好安装 SP1 后，请运行从站点下载的.exe文件。 然后按照说明安装 SP1。 你的电脑可能在安装期间重启多次。 安装 SP1 后，登录到你的电脑。 你可能会看到指示更新是否成功的通知。 如果你在安装之前禁用了防 ...

Windows 11 Windows 10. To open up your webcam or camera, select the Start button, then select All apps, and then select Camera in the list of apps. If you have multiple cameras, you can switch between them by selecting Change Camera at the top right once the Camera app is opened. Open Camera.

If the Get Help app is unable to resolve your sound or audio issue, try the possible solutions listed: 1. Check your speaker output. 2. Run the audio troubleshooter. 3. Verify that all Windows Updates are installed. 4. Check your cables, plugs, jacks, volume, speaker, and headphone connections.

Supercharge your creativity and productivity with a premium Copilot experience. Download the Copilot app for a 1-month free trial of Copilot Pro. Get the Copilot app. Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.

发布频道 可用 下一步 Windows Update 和 Microsoft Update 是 对于适用的 Windows 版本，请转到设置> Windows 更新 >检查汇报。 Windows Update for Business 否 无。 有关 Windows 更新 for Business 的详细信息，请转到 Windows 更新 for Business 网站。

In the search box on the taskbar, enter device manager, then select Device Manager. Select a category to see names of devices, then right-click (or press and hold) the one you’d like to update. Select Search automatically for updated driver software. Select Update Driver. If Windows doesn't find a new driver, you can try looking for one on ...

如何打开电脑健康状况检查. 在 Windows 中，使用任务栏上的“搜索”来搜索“电脑健康状况检查”，然后从结果列表中选择它。. 如果电脑健康状况检查更新可用，则可以快速安装最新版本。. 如果未安装电脑运行状况检查，可以通过转到 https://aka.ms ...

如果从电脑启动：. 在任务栏上的搜索框中，键入 “手机连接 ”，然后从结果中选择手机连接 。. 如果尚未使用 Windows 登录，系统可能会要求 登录 Microsoft 帐户 。. 在 Android 设备上安装或打开 连接至 Windows 移动应用。. 为此，请在 Android 设备上打开网络浏览器 ...