What is the function of the F1 to the F12 button on the keyboard?

Knock on the keyboard every day, we actually understand the keyboard is not so deep, we use most of the keyboard, at least 12 function keys, usually known as the F key, its position is generally at the top of the keyboard, then these 12 keys each master how the function of positioning it?

F1: If you are in a selected program and need help, please press F1. If you are not in any program now, but are in Resource Manager or desktop, the Windows helper will appear when you press F1. If you are working on a program and want Windows Help, you need to press WIN+F1. Press SHIFT+F1, and there will be "What ' s This?" 's Help information.

F2: If a file or folder is selected in the Explorer, pressing F2 renames the selected file or folder.

F3: When you press F3 on the Explorer or desktop, the Search for Files window appears, so if you want to search for a file in a folder, pressing the F3 key quickly opens the search window, and the search scope has been set to this folder by default. Similarly, when you press it in Windows Media Player, a window with the "Add to Media Library by search computer" appears.

F4: This key is used to open the Address bar list in IE, to close the IE window, you can use the ALT+F4 key combination.

F5: Used to refresh the contents of the current window in IE or Explorer.

F6: Can quickly navigate to the Address bar in the explorer and IE.

F7: Nothing works in Windows, it works in a DOS window that shows some of the most recently used DOS commands, that is, when you enter commands at the command line, the system automatically records them, but you need to enter the same command again, just press the up and down arrow symbol to bring up the corresponding command. The same F7 is to enumerate all the used, the record will be emptied after closing the window.

F8: When you start your computer, you can use it to display the boot menu. Some computers can also start at the beginning of the computer to press the key to quickly pull up the startup settings menu, from which you can quickly choose to start the floppy disk, or CD-ROM boot, or directly with the hard drive, do not bother to enter the BIOS to start the sequence of changes. In addition, you can accept the Microsoft installation protocol when you install Windows.

F9: It doesn't work in Windows either. However, it can be used in Windows Media player to quickly lower the volume.

F10: To activate a menu in Windows or programs, press SHIFT+F10 to appear with the right-click shortcut menu. In Windows Media Player, it is the ability to increase the volume.

F11: Enables the current Explorer or IE to become full-screen.

F12: It doesn't work in Windows either. But in Word, pressing it quickly pops up a window that is saved as a file.