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[Computer introduction] Introduction of each key, beginners must read!
An introduction to function of each key on the keyboard:
1. Esc key
An abbreviation of English word escape, function of this key on keyboard is to exit current state, and it also means "cancel" and "exit", so no matter what you do, and then you don't If you don't want it do, you can try pressing Esc key, then you can.
2. Tab key
The Tab key on keyboard is located above uppercase and lowercase keys (Caps Lock). The Tab key is an abbreviation for tab key. Grid key. Its most basic use is to draw marginless tables.
3. Caps Lock
Caps Lock is short for Capitals Lock, which is Caps Lock key on keyboard that is used to switch between upper and lower case. But mainly it is used for continuous input of multiple capital letters. It can be used to switch between Chinese and English on macOS.
4. Shift key
The Shift key is Shift key on keyboard and can also be used to convert between Chinese and English. There are Shift keys on left and right. The Shift key has functions of switching input methods, quickly switching between half-width and full-width, selecting continuous files, and directly deleting files. shift is keyboard transformation key, first press and hold "Shift" key, and then press other keys on keyboard, for example: "Shift + Delete" direct file deletion.
5, Fn key
Function keys on a laptop. Fn is an abbreviation for Function. A function has a function value, which is why we call it a function key. Fn also does not respond when pressed alone. It can be used in combination with other keyboard keys to achieve control purposes. For example, Fn plus one of F1 ~ F12 to control Wi-Fi switch, control of different computers may be different, and there is no single standard.
6, Ctrl key
Ctrl is a commonly used key on keyboard. The full name is "control", which means "control" in Chinese and has a wide range of applications. Called "control keys" in computer basics. This keyboard key is similar to Shift key. Pressing it once has no effect. It is also used in combination with other keys to achieve some operational control purposes. For example, most common keyboard shortcuts Ctrl+C and Ctrl+V are for copy and paste operations.
7, Win key
This key doesn't have a letter, and some keyboards don't have one because it's a Microsoft sign, so we call it victory key. It is used in Microsoft operating system to perform some shortcuts in Windows operating system, such as Win+E to open My Computer.
8, Alt key
The Alt key is a key in Windows operating system. According to latest ISO/IEC 9995 standard, Alt key is called Alternate in its full name, which means change and exchange in Chinese, and is called alternative shift key in computer field. But there is a saying that its full name is word "Alter". The Alt key is powerful, and flexible and intelligent use of Alt, Ctrl, and Shift keys plays a key role in improving work efficiency. On a Mac system, corresponding button is "option". In addition, Alt Gr key is associated with the Alt key.
9, Back Space key
backward returns, meaning of word "backward", "space", so we usually translate it literally as "backward" key, which means "backward one space", if characters are entered in input field, "backward one space" means delete previous, view in IE. When browsing web in a browser, this key can act as a shortcut to return to previous page.
10, enter key
The key with word "Enter" and a curved arrow is called "Enter Key". The function of Enter key on a computer is confirmation.
11, Print Screen key
The Print Screen button allows you to copy a full screen image. When using Print Screen to capture screen, press Alt key instead of Ctrl at same time, and only currently active window will be copied. After using Print Screen to capture screen, open paint tool (run PBRUSH) and press CTRL+V, captured screen will appear in edit window, then save it.
12, scroll lock
scroll lock (scroll lock key) is a function key on computer keyboard. After pressing this key, when you press up and down keys to scroll in Excel, etc., cursor will be locked and page will scroll; if this key is released, press up and down keys. When key is pressed, cursor will scroll and the page will be locked.
13. Pause/Break key
Pause means pause and Break means break, which are rarely used in Windows operating system. After pressing Pause Break key, contents displayed in self-test interface before entering operating system will pause information scrolling, and then press any key to continue. The original function was to pause or stop current operation, which was more useful in earlier versions of DOS.
14, Insert Key
The Insert key (INS for short) is a key on a computer keyboard, primarily used to switch text input mode in a word processor. One of them is overwrite mode, new entered word at cursor position replaces original word; other is insert mode, newly entered word is inserted at cursor position, and original word is moved back accordingly. In early computer terminals, in overlay mode, cursor turned into a square instead of usual vertical bar.
15, home button
Home is home, so function of home button is to return home. Back to very beginning, most intuitive place, when you press "Home" button while entering text, cursor will return to very top.
16, PageUp key
"page up" is a key on keyboard that is used to turn page up. In text editing environment, press this key to turn document forward one page.
17. Delete Key
The delete key is del or delete key on keyboard, usually located in upper right corner of keyboard.
Delete text, each time you press delete key, one character to right of cursor will be deleted, and character to right of cursor will move one space to left. (roughly opposite of backspace key)
Delete files. When one or more files/folders are selected, press delete key to quickly delete them/them (move them to trash).
18, end key
The End key is a key on keyboard. When editing text, if cursor is not at end, press END key and cursor will be placed at end. If it is a document, press CTRL+END, cursor will be positioned at end of document.
19, PageDown key
PageDown corresponds to PageUp, both of them are page turning keys, difference is that one button is down, turning down, and other is up, turning up.
20, digital lock
Here Num is abbreviation of number, value of number, this key means blocking number, for a small keyboard, if Num Lock key is blocked, then entering a number on small keyboard, if it is not blocked, it corresponds to function under the key.
The spacebar or space bar is a key on a computer keyboard, longest of which is at bottom of keyboard. A space is usually a long bar, and main reason for adopting this design is that it is convenient to type, such as to separate two words with a space. Thus, spacebar is designed to be wider than any other key and can be easily pressed with thumbs of both hands. There are convenient conditions for people when performing multi-character input.
22, function keys F1–F12
means "Function" (function) which is used to form a combination key with other keys to achieve control functions.
F1: decrease brightness
F2: increase brightness
F3: control center
F5: Decrease keyboard brightness
F6: increase keyboard brightness
F9: fast forward
F11: volume down
F12: volume up
If you enable features listed above, you need to set Fn as default key in System Preferences, which is common between macOS and Windows, and you need to install Windows with Boot Camp to use it.
The above is introduction and usage of each key.