每个键盘的顶行都有一组功能键 F1-F12(Function Keys F1-F12)，但是，旧电脑组过去将这些键集中在键盘的左侧。虽然每个功能键都有特殊功能，但它们也可以与Alt键和Ctrl 命令(Ctrl Command)键结合使用，以形成有用的键盘快捷键。如果您是普通的计算机用户，您可能并不真正了解这些功能键及其用途。在这篇文章中，我们将讨论这些键盘 F1 到F12功能键(Keys)的作用。
除了这些F1-F12 12 个(F1-F12 12)功能键之外，还有一个特殊的Fn键位于键盘上的(Fn)Ctrl键旁边。Fn 键用于激活用相同颜色的特殊图标标记的特殊功能键。(Function Keys)例如，我笔记本电脑键盘上的 F1 键有一个Touchpad Off小图标，颜色代码与Fn 键(Fn Key)匹配；这意味着Fn+F1将关闭/打开我的Touchpad Off/On。功能(Function)键在不同程序上的工作方式不同。
提示(TIP)：阅读如何交换或更改 Windows 笔记本电脑中的功能键行为。
键盘 F1(Keyboard F1)到F12 功能键(F12 Function Keys)有什么作用
F1 键
- F1 键在几乎每个程序中都普遍链接到帮助(Help)，可能是Chrome或Microsoft Word。
- Win Key+F1打开Microsoft Windows帮助和支持中心。
- Shift + F1 显示 MS Word 中的格式。
- Ctrl+F1 在 MS Office 中打开任务窗格。
F2 键
- 热键重命名任何突出显示的图标、文件或文件夹。选择一个文件/文件夹/图标，然后单击 F2 重命名它。
- Ctrl+F2MS Word中打开打印预览。
- Fn+F2使您的 PC 静音。
- Alt+Ctrl+F2MS Office中打开文档库。
- 在Boot Process期间单击时，F2 键将带您进入 PC 的BIOS设置。
F3 键
- F3经常激活不同应用程序中的搜索功能，包括(F3)Google Chrome、Firefox和Microsoft Edge等领先浏览器。
- Fn+F3可降低某些笔记本电脑的音量。
- 单击Shift + F3Microsoft Word中的文本从大写更改为小写
- Shift +F3在 Google Chrome 中打开搜索。
F4 键
- F4常用于关闭应用程序。Alt+F4关闭当前打开的程序。
- Alt+F4 在没有程序打开时打开关闭选项。
- Ctrl+F4关闭正在运行的程序的一部分，例如选项卡或文档。
- 单击 Fn+F4可增加某些笔记本电脑的音量。
- F4将您带到Windows Explorer和Microsoft Edge中的地址栏。
- F4 在Space Cadet(Space Cadet)和 3D Pinball等应用程序中打开全屏窗口。
F5 键
- F5 键(Key)通常用于刷新网页。
- 单击F5在(F5)MS Word中打开查找(Find)和替换(Replace)窗口。
- 在PowerPoint(PowerPoint)中单击时开始幻灯片放映。
- Fn+F5会降低某些笔记本电脑上显示器的亮度。
阅读(Read)：如何在键盘上键入不等于(Does not equal)号。
F6 键
- 此键将您带到某些浏览器（如Google Chrome、Firefox、Microsoft Edge和许多其他流行浏览器）中的地址栏。
- Fn+F6可提高某些笔记本电脑上显示器的亮度。
F7 键
- F7 在MS Word中打开拼写和语法检查器。
- Shift+F7在 MS Word 中打开同义词库。
- Fn+F7 在某些笔记本电脑中打开第二个屏幕选项并在某些笔记本电脑中打开显示方案。
F8 键
- 通常用于在安全模式下启动您的(Safe Mode)Windows PC 。
- 有时会带您进入Windows 恢复(Windows Recovery)系统。
F9 键
- 如果您使用的是MS Word，F9 键将更新您的文档。
- 单击 F9在(Click F9)Microsoft Outlook中发送或接收电子邮件
F10 键
- F10 键(F10 Key)在打开的应用程序中打开菜单栏(Menu Bar)。
- Shift+F10用作右键单击选项。
F11 键
- 在几乎所有流行的浏览器中进入和退出全屏模式，包括(Mode)Chrome、Firefox和Microsoft Edge。
- CTRL+F11Windows笔记本电脑中打开隐藏的恢复选项。
- Alt+F11打开Visual Basic 编辑器(Visual Basic Editor)。
F12 键
- 如果您正在使用MS Word，请单击F12打开另存为(Save As)窗口。
- Win+F12将您的文档保存在MS Word中。
- CTRL+F12MS Word中打开一个文档。
- 在流行的网络浏览器中打开检查元素。(Inspect Element)
其中一些功能仅在某些选定的笔记本电脑上可用。通常，功能键(Function Keys)的这些选项功能上印有默认操作或图标。
PS：有没有想过为什么电脑键盘上的F和J会有凸起？如果功能键不起作用，请参阅此帖子。
What do Keyboard F1 to F12 Function Keys do
Every keyboard has а set of Function Keys F1-F12 on the top row, however, the old computer sets used to have these keys gathered on the left side of the keyboard. While every function key caters special function, these can also be combined with Alt Keys and Ctrl Command keys to make the useful keyboard shortcuts. If you are a casual computer user, you might not really be aware of these function keys and their use. In this post, we will talk about what do these keyboard F1 to F12 function Keys do.
Besides these F1-F12 12 function keys, there is a special Fn key located next to the Ctrl key on your keyboard. The Fn key is used to activate special Function Keys which are marked by special icons in the same color. For example, key F1 on my laptop’s keyboard has a small icon of Touchpad Off in a color code matching to the Fn Key; which means Fn+F1 will turn my Touchpad Off/On. Function keys work differently on different programs.
TIP: Read how to swap or change Function key behavior in Windows laptops.
What do Keyboard F1 to F12 Function Keys do
F1 Key
- F1 key is universally linked to Help in almost every program, may it be Chrome or Microsoft Word.
- Win Key+F1 opens the Microsoft Windows help and support center.
- Shift + F1 reveals formatting in MS Word.
- Ctrl+F1 opens Task Pane in MS Office.
F2 Key
- Hotkey to rename any of the highlighted icons, file,s or folders. Select a file/folder/icon and click F2 to rename it.
- Ctrl+F2 opens the print preview in MS Word.
- Fn+F2 mutes the volume of your PC.
- Alt+Ctrl+F2 opens document library in MS Office.
- When clicked during Boot Process, the F2 key takes you to the BIOS setup of your PC.
F3 Key
- F3 often activates search functions in different applications including the leading browsers like Google Chrome, Firefox and Microsoft Edge.
- Fn+F3 to decrease the volume in some laptops.
- Click Shift + F3 to change the text in Microsoft Word from upper to lower case
- Shift +F3 opens the search in Google Chrome.
F4 Key
- F4 is often used to close the applications. Alt+F4 closes the currently open program.
- Alt+F4 opens the shutdown option when no program is open.
- Ctrl+F4 closes a part of the running program such as a tab or a document.
- Click Fn+F4 to increase the volume in some laptops.
- F4 takes you to the address bar in Windows Explorer and Microsoft Edge.
- F4 opens a fullscreen window in some applications like Space Cadet and 3D Pinball.
F5 Key
- F5 Key is often used to refresh a web page.
- Click F5 to open Find & Replace window in MS Word.
- Starts a slideshow when clicked in PowerPoint.
- Fn+F5 decreases brightness on your monitor on some laptops.
Read: How to type Does not equal sign on keyboard.
F6 Key
- This key takes you to the address bar in some browsers like Google Chrome, Firefox, Microsoft Edge and many other popular browsers.
- Fn+F6 increases the brightness of your monitor on some laptops.
F7 Key
- F7 opens spelling and grammar checker in MS Word.
- Shift+F7 opens thesaurus in MS Word.
- Fn+F7 opens second screen options in some laptops and opens display schemes in some laptops.
F8 Key
- Commonly used to start your Windows PC in Safe Mode.
- Takes you to the Windows Recovery system at times.
F9 Key
- If you are using MS Word, the F9 key will update your document.
- Click F9 to send or receive an email in Microsoft Outlook
F10 Key
- F10 Key opens Menu Bar in the open application.
- Shift+F10 works as right-click option.
F11 Key
- Enters and exits Full-Screen Mode in almost every popular browser including Chrome, Firefox and Microsoft Edge.
- CTRL+F11 opens the hidden recovery options in some Windows laptops.
- Alt+F11 opens the Visual Basic Editor.
F12 Key
- If you are working on MS Word, click F12 to open Save As window.
- Win+F12 saves your document in MS Word.
- CTRL+F12 opens a document in MS Word.
- Opens Inspect Element in popular web browsers.
Some of these features are available only on some selected laptops. Usually, these options features of Function Keys have default actions or icons printed on them.
PS: Ever wondered why there are bumps on the F and J on a computer keyboard? See this post if Function keys are not working.
