The fourth argument is empty, so the function returns an approximate match. If it didn't, you'd have to enter one of the values in columns C or D to get a result at all. When you're comfortable with VLOOKUP, the HLOOKUP function is equally easy to use. You enter the same arguments, but it searches in rows instead of columns.

If you don’t see one of the network icons (or a similar one) shown in the following image, select the Up arrow to see if it appears there. Choose the Wi-Fi network you want, then select Connect . Type the network password, and then select Next .

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。

Generally, if you bought a physical copy of Windows, the product key should be on a label or card inside the box that Windows came in. If Windows came preinstalled on your PC, the product key should appear on a sticker on your device. If you’ve lost or can’t find the product key, contact the manufacturer.

Support for home products. Depending on your product and if it's still in support, Microsoft support experts are available to help you with a broad selection of support options and able to address product and service challenges for a more personalized experience. Chat or receive a call back from a technical support expert: If you have a Microsoft 365 Basic, Microsoft 365 Personal, or Microsoft ...

Ctrl + T. Open a new tab and switch to it. Ctrl + Shift + T. Reopen the last closed tab, and switch to it. Alt + Shift + T. Set focus on the first item in the app bar toolbar. Ctrl + U. View source. Ctrl + Shift + U. Start or stop Read Aloud. Ctrl + Shift + V. Paste without formatting. Ctrl + W. Close the current tab. Ctrl + Shift + W. Close ...

The Windows Scan app can help you scan pictures or documents and save them to your PC as JPEG, bitmap, or PNG files. For more info, see Install and use a scanner in Windows.. Get Windows Scan

Swipe in from the right edge of the screen, and then tap Search.Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.Type Command Prompt in the Search box, right-click Command Prompt, and then click Run as administrator.If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.

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Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update.