Do you know the function of each key on the computer keyboard? As the main tool for us to interact with the computer, each key of the keyboard assumes a different function, from entering text to executing commands. PHP editor Xinyi will take you to deeply understand the function of each key on the computer keyboard, from the most basic letter keys to special function keys, revealing the mysteries of the keyboard world. Continue reading to learn how to make the most of your keyboard to improve your productivity and experience!
The computer keyboard is an indispensable input device when we use the computer. There are many keys on it, each Each button has its specific function. Below we will explain in detail what each key on your computer keyboard does.
Letter keys are one of the most basic keys on the computer keyboard. They are used to enter English letters. Each letter key has a fixed code. When a certain letter key is pressed, the computer will perform corresponding processing according to the code.
Number keys are also one of the commonly used keys on computer keyboards. They are used to enter numbers. The numeric keys are arranged slightly differently than the alphabetic keys, but they are coded the same as the alphabetic keys.
Function keys are keys with special functions on the computer keyboard, such as Ctrl, Alt, Shift, Esc, Pause, etc. These keys usually have specific combinations and can be used to perform specific operations, such as switching input methods, copying and pasting, etc.
Control keys are keys on the computer keyboard used to control the cursor position and input methods, such as Enter, Backspace, Delete, etc. These keys are typically used for operations such as entering text, creating files and folders, and so on.
Direction keys are keys on the computer keyboard used to control the movement of the cursor, including the four directions of up, down, left and right. These keys are typically used to move the cursor position within a document or web page.
Special keys are keys with special functions on the computer keyboard, such as the space bar, enter key, tab key, etc. These keys are typically used for operations such as entering spaces, wrapping lines, or switching between options.
The computer keyboard is an indispensable input device when we use the computer. There are many keys on it, and each key has its specific function. By understanding the function of each key on the computer keyboard, we can better master computer usage skills and improve work efficiency.
The function of each key on the computer keyboard
ESC: Cancel the line where the cursor is located
F1: System default help information
F2: Select files and folders with duplicate names
F3: Search file function under resource management
F4: Open the address bar list when the browser is working
F5: Refresh key
F6: Quickly locate the address bar
F7: No effect
F8: Computer startup, BIOS startup item settings
F9: No effect
F10: Shift+F10 performs right-click operation
F11: Full screen mode
F12: Bring up the debugging window under the browser
PrtScSysRq: Capture the full screen key
Alt+PrtScSysRq to capture the current window screen
PauseBreak: Pause key
Backspace: Delete key
Ins: Insert character switch key
Del: Character delete key, the character behind the current cursor is deleted
Home: Line first key, the cursor moves to the beginning of the line
PgUp: Page up keyboard
PgDn: Page down keyboard
Tab: Jump function
CapsLock: Switch between upper and lower case letters
Shift: Hold down the Shift key and select files continuously
Ctrl: Hold down the Ctrl key and select files Multiple selections are possible
Alt: Close the current menu
Enter: Enter key, line break function
Nmlk: Lock the numeric keypad
ScrLK: Screen scrolling display
Win key introduction:
Win+E : Open resource management
Win+R : Open the run dialog box
Win+D : Show or hide the desktop
Win+M : Minimize all windows
Win+L : Lock screen
Win+P : Projection
Win+U: Open the settings window
Win: Single press to display or hide the start menu
Key combination function:
Ctrl+A: Select all
Ctrl+S: Save
Ctrl+Z: Undo
Ctrl +X: Cut
Ctrl+C: Copy
Ctrl+V: Paste
Ctrl+N: New
Ctrl+W: Close
Ctrl+F: Find
Alt+Tab: Switch program
Alt+F4: Close the current active window
Shift+Del: Permanently delete the file
Each key on the computer keyboard has a specific function or symbol. The following is the function description of the main keys on the standard English keyboard:
1. Letter keys: Contains 26 letters, used to enter text and form words.
2. Numeric keys: The row located above the keyboard, used to enter numbers.
3. Function keys: Usually located at the top of the keyboard, numbered F1 to F12, they are used to perform specific functions or commands. The specific functions depend on different software and operating systems.
4. Enter key: Used to confirm commands, submit forms, or wrap lines during text editing.
5. Backspace key: Used to delete the character or element in front of the cursor.
6. Delete key: Used to delete the character or element behind the cursor.
7. Tab key: used to switch between input boxes, tables or other elements.
8. Caps Lock key: Used to switch the uppercase and lowercase mode of the alphabetic keyboard. When it is turned on, type uppercase letters, and when it is turned off, type lowercase letters.
9. Shift key: used to enter uppercase letters and special symbols on the alphabetical keyboard.
10. Ctrl key (Control key): Usually used in combination with other keys to execute specific shortcut commands.
11. Alt key (Alternate key): It is also used in combination with other keys to execute other shortcut commands.
12. Spacebar: Used to enter spaces to separate words and sentences.
13. Arrow keys: including up arrow, down arrow, left arrow and right arrow, used to move the cursor up, down, left and right in text or images.
14. Windows key (or Command key, on Apple computers): Open the Start menu (Windows system) or perform other system-level operations (Mac system).
15. Alt Gr key (Right Alt key): Used to enter special characters, especially in international keyboard layouts.
16. Esc key (Escape key): used to cancel the current operation or close the dialog box.
17. Page Up key and Page Down key: Used to turn up or down a page or document.
18. Home key and End key: Used to move the cursor to the beginning (Home) or the end (End) of the current line or document.
19. Print Screen key: Used to take a screenshot and copy the current screen content to the clipboard.
20. Scroll Lock key: Usually of limited use in modern computers, it was used in the past to lock the scrolling function.
21. Pause key: Used to pause the running of the program or pause the playback of media.
It is worth noting that different types of keyboards (such as international keyboards, Apple keyboards, etc.) may have different key positions and functions, but the basic functions are roughly the same.
Ctrl shortcut key:
Ctrl+A Select all
Ctrl+B Bold
Ctrl+C Copy, copy
Ctrl+D Font format
Ctrl+E Center alignment
Ctrl+ F Find
Ctrl + G Position
Ctrl+ H Replace
Ctrl+ I Italic
Ctrl+J Justify
Ctrl+ K Hyperlink
Ctrl+L Left align
Ctrl+ M Left indent
Ctrl+N New
Ctrl+O Open
Ctrl+ P Print
Ctrl+R Right align
Ctrl+ S Save
Ctrl+ U Underline
Ctrl+V Paste
Ctrl+ W Write disk close
Ctrl+X Cut
Ctrl +Y repeat
Ctrl+Z Undo
Ctrl+1 Single spacing
Ctrl+2 Double spacing
Ctrl+3 Lock
Ctrl+5 1.5x spacing
Ctrl+= Subscript and normal switching
Ctrl+Shift shortcut Keys:
Ctrl+Shift+A Capital
Ctrl+Shift+C Format copy
Ctrl+Shift+D Scatter alignment
Ctrl+Shift+E Revise
Ctrl+Shift+F Define font
Ctrl+Shift +I italic
Ctrl+Shift+K Change lowercase letters to uppercase
Ctrl+Shift+L List style
Ctrl+Shift+M Reduce left indent
Ctrl+Shift+N Downgrade to text
Ctrl +Shift+P Define character size
Ctrl+Shift+S Define style
Ctrl+Shift+T Reduce first line indent
Ctrl+Shift+U underline
Ctrl+Shift+V format paste
Ctrl+ Shift+W only underlines words
Ctrl+Shift+Z Default font style
Ctrl+Shift+= Superscript and normal switching
Alt+Shift shortcut:
Alt+Shift+A Show all titles
Alt +Shift+C Close preview
Alt+Shift+D Insert date
Alt+Shift+E Edit mail merge data
Alt+Shift+F Insert merge fields
Alt+Shift+K Preview mail merge
Alt+ Shift+L Display
Alt+Shift+M Print merged document
Alt+Shift+N Merge document
Alt+Shift+O Mark table of contents items
Alt+Shift+P Insert page number
Alt+Shift+T Insert time
Alt+Shift+U Update field
Alt+Shift+X Mark index entry (index entry)
Alt+Shift+1 Show "Title 1"
Alt+Shift+2 Show title "2"
Alt+Shift+3 Show "Title 3"
Alt+Shift+5 Apply "Title 3"
Ctrl+Alt+E Insert endnote
Ctrl+Alt+F Insert footnote
Ctrl+Alt+I Preview + Alt+S splits the window
Ctrl+Alt+U updates the table format
5. What is the function of the key on the computer keyboard?
1.Esc: Cancel and exit (for example, when the computer is watching a video in full screen, Esc exits the full screen)2.Scroll lock: Scroll lock is the key that opens the middle area3.Tab: Table key switching4. Pause break: Pause key5.Caps Lock: Switch between uppercase and lowercase letters6.Insert: Play key7.Shift: Conversion key (such as conversion between Chinese and English)
8.Delete: Key to delete
9.Ctrl: Control key, needs to be used with other keys or mouse (such as Ctrl+A to select all text or files)
10.home: Home key moves the cursor to the beginning of the word
11.end: End key moves the cursor to the end of the word
12.Alt: Optional key, generally used in combination with other keys to form a shortcut key (such as Alt+v to open the view menu)
13.Enter: Enter key (confirm)
14.Page Up: Page up
15.Page Down: Page down
16.Backspace: Backspace key
17.Number lock: Numeric keypad switch
18.Print screen: Print screen key
19.F1-F12: Function keys (These function keys are very useful and can also be combined into shortcut keys to achieve different effects, such as Ctrl+F4 to close the current tab; I hope you will not ignore them easily.)
F1 displays help content.
F2 Rename
F3 Find
F4 Open address bar list
F5 Refresh
F6 Locate
F7 Show DOS command
F8 Enter safe mode
F9 Quickly lower volume
F10 Activate menu bar
F11 Hide sidebar
F12 Save as
On a computer keyboard, the shift key is located in the lower left corner of the keyboard, next to the Ctrl key and the Alt key.
It is usually a rectangular key, which can be achieved by pressing and holding it.
It is generally marked as "Shift" on the keyboard. Its function is to switch to uppercase letters when inputting letters; When using numbers, you can switch to punctuation. In addition, combined with other keyboard keys, some special characters can also be input.
By pressing the shift key, you can easily enter various symbols and capital letters, which is a very commonly used key in keyboard input.
Actually, the fn key was first invented by IBM. . Designers at Yamato Labs have always believed that if the Ctrl key is closer to the palm, it will be very convenient to use the Ctrl key without leaving the original position of the finger, especially when using functions such as "Ctrl + C" (copy) and When using shortcut keys such as "Ctrl + V" (paste); and the Fn key is located on the left edge of the keyboard, which can reduce the chance of errors when using shortcut keys, such as using "Fn + F5" (manage wireless connection function) and "Fn + Home/End" (adjust screen brightness) and other shortcut keys. "What I personally use most is to accurately turn on the keyboard light or keyboard backlight in the dark. In fact, many key combinations were invented by IBM...
Function of a single key:
It is called the screen hard copy key. When the printer is online, pressing this key can output the display content of the computer screen through the printer.
Press the pause key to make the computer active. The executed command or application program temporarily stops working. Press any key on the keyboard to continue working. In addition, press the "Ctrl" + "Break" key to interrupt the execution of the command or the running of the program. Press this key once to enter character insertion. status; press it again to cancel the character insertion status.
Used alone, you can cancel the current task. Note that it is the task opened by the software, not the software itself.
In the DOS operating system, you will find that pressing F1 usually. The help option will appear. In the Windows operating system, if you press F1 in a selected program, help will often appear. If you are not in any program, but in the explorer or desktop, then Press F1 and the Windows help program will appear. If you are operating a program and want to get Windows help, you need to press Win+F1. Press Shift+F1 and the "What's This?" help message will appear.
Rename the selected item: Select a folder in the explorer, and F2 will rename the folder, which has the same effect as renaming with the right mouse button. Search for files or folders: in the explorer or on the desktop. Press F3, and the "Search for Files" window will appear. Therefore, if you want to search for files in a folder, just press the F3 key to quickly open the search window, and the search scope has been set to this file by default. folder. Display the "Address" bar list in "My Computer" and "Windows Explorer". Refresh the current content when you insert a new floppy disk. The screen still displays the contents of the previous floppy disk. You only need to press F5 to refresh the screen and you can see the contents of the just inserted floppy disk. Cycle through screen elements in the window or desktop, and you can quickly switch between the explorer and the desktop. Locate the address bar in IE. It has no effect in Windows, but it may work in certain programs. You can try it when starting the computer. Menu. Some computers can also press this key at the beginning of the computer startup to quickly bring up the startup settings menu, from which you can quickly choose whether to boot from a floppy disk, a CD, or directly boot from the hard disk without having to enter the BIOS to modify the startup sequence. In addition, you can also accept Microsoft's installation agreement when installing Windows. It also has no effect in Windows, but it can be used to quickly reduce the volume in Windows Media Player. You can activate the menu bar in the current program. Press Shift+F10 and a right-click shortcut menu will appear. It has the same function as the Application key on the keyboard. In Windows Media Player, its function is to increase the volume.When working in Windows, pressing F11 will make IE or Explorer into full screen mode. will make the menu bar disappear so that we can see more information on the screen. Press it again to restore it.
Also has no effect in Windows. But in Word, pressing it will quickly pop up the save as file window.
Insert character switch key.
Also known as: Delete. Character delete key. Press this key once to delete the character at the current cursor position.
View the previous folder in "My Computer" or "Windows Explorer".
First key of the line. Pressing this key once moves the cursor to the beginning of the current line. (When the numeric keyboard is locked, it will function as HOME, otherwise it will represent "7". The following is the same)
The Tab key on the keyboard is located above the uppercase and lowercase keys (Caps Lock). The Tab key is the abbreviation of tabulator key , its meaning is "a person who makes tables, a tabulating machine, the tab key (used for tabulating on a typewriter)", and its most basic use is to draw borderless tables.
Also known as: PageUp. Page up key. Used to browse the content of the previous page displayed on the current screen.
Letter case conversion key: Each time you press it to convert, there is a corresponding uppercase and lowercase indicator light on the upper right side of the keyboard (the green light is on for uppercase letter input mode, and vice versa is for lowercase letter input mode).
On the computer keyboard, there is a key with the word "Enter" written on it and a curved arrow, which is called the "Enter key". The Enter key has two functions. One is to confirm the entered execution command, and the other is to function as a line break in word processing.
Also known as: PageDown, page down key. Used to browse the next page displayed on the current screen.
Select the first folder in "Windows Explorer" or "My Computer", hold down the SHIFT key, select the last folder, and you can select all folders in between.
End of line key: Press this key once and the cursor will move to the end of the current line.
Select the first folder in "Windows Explorer" or "My Computer", hold down the Ctrl key, select the last folder, and you can select all folders in between.
Close the current menu
Cursor movement keys. Move the cursor one space to the left, up, right, and down respectively.
NumLK is the abbreviation of number lock, which is used to lock the numeric keypad.
Also known as: ScrollLock. The screen scrolls to display the lock button. This button is currently disabled.
The function of the ESC key on the computer keyboard
1. When we enter full-screen mode while watching some web videos or playing games, if we want to exit full-screen video viewing, we only need to press the ESC key to exit. Full screen state.
2. Pressing ESC twice in succession can solve the problem that some IE cannot see the horizontal scroll bar when zooming out.
3. When we load a web page, sometimes it will not come out. At this time, we can press the Esc key to interrupt the loading.
4. When surfing the Internet, it is inevitable to fill in some user names. If you make a mistake, press the ESC key to clear all the contents in the box. When typing, if you make a mistake, you can also press the ESC key to clear the wrong one. Word selection box.
5. In Excel, when you make an error in a cell to undo it, you can use the Esc key.
6. In PPT, press the Esc key to exit full screen.
7. When encountering a GIF animation, press the ESC key to terminate all animation effects on the current page.
8. In the game, when we enter the full-screen mode of the game, many games press the ESC key to return and exit.
Extended information:
The ESC key, also known as the return key, is located on the upper left side of the computer keyboard and is the abbreviation of the English word escape. For users, the ESC key located on the upper left side of the keyboard is not commonly used. In fact, many shortcut operations can be performed with the ESC key.
The ESC key was born in 1960. At that time, IBM programmer Bob Bemer was trying to solve a Tower of Babel problem: computers produced by different manufacturers used different encodings.
The names and functions of each key on the computer keyboard
1. Cancel key: (Esc key)
means escape and exit. The main function is to exit a program. For example: if you want to quit while playing a game, just press this button.
2. Function keys: (F1-F12)
In different software, they can play different corresponding functions, and can also work together with other keys. For example: F1 is the help function.
3. Switch key: (Table key Tab)
means table. It mainly plays the role of equidistant movement in word processing software (such as Word). For example: When we are processing a table, we don’t need to use the space bar to move one cell by one. Just press this key to move equidistantly
.
4. Uppercase and lowercase keys: (CapsLock key)
Used to input more uppercase English characters. It's a cycle key. Press it again and it will return to lowercase. When booting to caps mode, the CapsLock indicator light on the keyboard will be on. When in uppercase state, the Chinese input method is invalid.
5. Shift key: (shift key)
is used to convert uppercase and lowercase or uppercase keys, and can also work with other keys. For example: to enter the @ of email, just press shift+2 in English mode.
6. Pitfall key: (control key ctrl)
means control. Requires use with other keys or mouse. We can select multiple discontinuous objects by using the mouse in Windows mode.
7. Ah special key: (optional key Alternativce)
means it can be selected. It needs to be used in conjunction with other keys to achieve a certain operation purpose. If you want to hot-start the computer, you can press Ctrl+Alt+Del at the same time to complete.
8. Space bar:
can push the text parallel to the right until it reaches the specified position.
9. Eliminate key: (Backspace)
Delete errors or redundant parts; pull or push lagging parts.
10. Enter key:
It plays the role of line break in word processing software.
11. Delete key: (Delete)
Mainly used to delete selected files or content in Windows or text editing software.
12. Direction keys: (Press the arrow to indicate the direction instead of moving the mouse)
13. Keyboard light keys: (Numlock key on the small keyboard)
14. Home key: (Home)
In text In the editing software, position it at the starting position of this line. Use it with the Ctrl key to navigate to the beginning of the article.
15. End key: (End key End)
means the end, the end. In text editing software, position it at the end of the line. Echoes the Home button. Use it with the Ctrl key to navigate to the end of the article.
16. Screen flip key: (pageup flips the content up in the software; pagedown flips down)
17. Insert key (lnsert)
is mainly used to insert characters in text editing. It is a cycle key, press it again and it will change to change
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