The top of the computer keyboard is placed with the 12 buttons “F1～F12”. They were originally intended to provide convenience to people, so they were placed in the most conspicuous position, but unfortunately, people did not make good use of them many times. Getting help More than just pressing F1, F1 is known to be able to launch helpers on Windows systems or applications. But getting help is more than simply pressing F1. If you are working in another application and you want help with Windows, just press the Win button and hit F1. If you are confused about the use of a component of a Windows application, try pressing the Shift key and then hitting F1. At this point, the message box "What's this?" (or What's this?) will appear on the screen. It will explain the specific use or usage of this component (Figure 1). In the F2 system, "rename agent", if a file or folder is selected in the Explorer, when you press the F2 function key, you can rename the file or folder. F3 Intimate Resources & “Explorer” Pressing the F3 function key on the Explorer or the system desktop will immediately bring up the “Search for Files” window. In Windows Media Player, F3 can search for media files in personal folders or shared folders in others. F4 Separate list joint closing window If it is in the resource manager, press the F4 function key to list the tree directory of each level of drives and various resources; if it is in IE, it will list the accessed addresses. List. If you want to close the Explorer or IE window, you can press the F4 function key while pressing the Alt key. F5 A guy who likes to be old and tired. When you modify the file name or attribute in the Explorer, or the content in the webpage such as IE browser changes, the changes on the current page may not be reflected in the visual immediately. F5, a brand new page will be displayed in front of you. F6 It is all about the address bar. When you put your hands on the keyboard, if you need to enter the URL to access the Internet, you have to use the mouse to go to the address bar and click and enter, this is a lot of trouble! It is better to press the function key F6 to get faster! The F6 function key allows you to quickly locate the address bar in the Explorer or IE browser. F7 Reproduce the historical events of the ancient world Press F7 in the command prompt window, and all the DOS commands you have previously operated will be displayed in the window. You can re-execute each of the previous commands by moving them up and down. This provides great convenience for situations where the command needs to be executed repeatedly (Fig. 2). “Advanced Leader” of the F8 system menu. When starting the computer, when the self-test process is finished, press F8 quickly before entering the desktop. The function key can display the boot menu, from which you can choose to enter many start-up modes, such as safe mode or with no network boot. Some computers can also press this button at startup to quickly call up the boot settings menu, from which to quickly select whether to boot from the CD or boot from the hard disk, without having to enter the BIOS program to modify the boot sequence. In addition, F8 can also accept Microsoft's installation agreement when installing Windows. F9 It doesn't like the high-sound singer function key, which also has no direct effect under Windows, but in the system media player Windows Media Player, you will find it can be used to reduce the volume. F10 One &## Menu Activation Expert" When you are in a Windows program with a menu system, press the F10 function key, you will find that the menu is lit, then press Enter to open the menu. Press Shift while pressing the F10 function key, the right-click shortcut menu will appear, which is the same as the keyboard's Application key. The role of F10 in Windows Media Player is to increase the volume. F11 large window small window It is decided that the function key F11 can make the currently used resource manager window or IE browser window full screen display, and press this button again to restore to the original window size. F12 Leave a makeover copy of the file F12 has no effect in the Windows basic environment, but in Word you press it, it will pop up "Save as" window. Tip: Although the 12 function keys in the Windows environment have a single role, they can play more roles by combining them with other keys.