Learn about modems and Internet connections, security, sharing files and printers, and how to set up a wireless network in your home.

Windows 10. Optimizing your drives can help your PC run smoother and boot up faster. To optimize them: Select the search bar on the taskbar and enter defrag. Select Defragment and Optimize Drives. Select the disk drive you want to optimize. Select the Optimize button.

Recover an earlier version of a Word file Word for Microsoft 365 Word 2021 Word 2019 Word 2016 Recover saved and unsaved documents.

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

With Microsoft Forms, you can send your form or quiz to students, parents, and colleagues and collect their responses in a few different ways, depending upon your needs.

Find out how to free up space on your device by deleting unnecessary files, uninstalling apps, and moving files to other drives.

Import or export text (.txt or .csv) files There are two ways to import data from a text file with Excel: you can open it in Excel, or you can import it as an external data range. To export data from Excel to a text file, use the Save As command and change the file type from the drop-down menu.

Schedule a message for later. While composing a message, select the dropdown next to Send and select Schedule send. Select one of the default options, then select Send or choose a custom time and then select Send . After you select Send, the message remains in the Draft folder until the delivery time.

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。

Create a new document. On the File tab, select New. Select Blank document, or double-click a template image or type the kind of document into the Search for online templates box and press Enter. Tip: For practice using Word features, try a learning guide like Welcome to Word or Insert your first table of contents. Add and format text.