What is Computer Keyboard and What are its Different Types?

 What is Computer Keyboard


What is Computer Keyboard? You must have used the keyboard. Because if you have used a computer or a laptop then you must have used the keyboard for your typing. But there will be many of you who do not have complete knowledge about the keyboard. So, for those people, this article about Keyboard will be very helpful.

If you already know about Computer then you will have knowledge about the definition of the keyboard and why it is used. By the way, let me tell you that we use a computer keyboard to do data entry on the computer. With the help of Keyboard, we can also do typing. So today I thought why not give you complete information about the type of keyboard so that all your doubts will be clear. Then without delay, let's start and know what is Computer Keyboard.


    What is Computer Keyboard?

    The keyboard is an Input device. It is mainly used to enter commands, text, numerical data and other types of data in a computer. In order to interact with a computer, the user uses input devices such as a keyboard and a mouse.

    After this, these entered data is converted into machine language so that CPU can understand the data and instructions that are coming from input devices.

    How to Connect the Keyboard with the Computer?

    If we talk about the earlier times then, in those days, PS / 2 or serial connector was used to connect the keyboard with the computer. But if I talk about now, then USB (universal serial bus) and wireless connectors are used.

    It is now very easy to connect them. The disadvantage of Wiress Keyboard is that in this we have to change the battery again and again. Otherwise, it is more portable than other keyboards.

    Types of Computer Keyboard

    There are many different types of keyboard layouts that are manufactured according to region and language. Here, I am going to inform you about the various types of keyboard.

    QWERTY: This layout is used the most in the world and it has been named according to the first 6 letters, which you can see in the top row. It is used in almost all countries. In fact, It is used so much that many people think that this type of keyboard is the only ones that exist.

    AZERTY: It was developed in France and is also considered as standard French keyboard.

    DVORAK: This layout is designed to reduce finger movements so that typing can be done more quickly than QWERTY and AZERTY keyboard.

    If I talk about now, then the keyboards which are used in the present time are mostly 'QWERTY'.

    Information about various Keys in Keyboard

    In a Computer Keyboard, many letters, numbers, symbols and commands are placed in the shape of a button, and each of these belongs to some specific category. So if you get the idea about which key belongs to which category, then you can easily know about their functions.

    Some keyboards have special keys, whereas others do not, but all keyboards have the same alphanumerical keys.

    Alphanumeric Keys

    All keyboards have a set of keys which are called alphanumeric keys. This term "alphanumeric" means either letters or numbers, but no symbols or command keys. The number keys are present in two different parts of the keyboard:

    One on top of these letters and the other on the right of these letters. These number keys which appear above the letters consist of symbol keys within them. If you press the Shift button and press any one of these number keys then whatever symbol present in that number key will be typed. The top row of the keyboard consists of letters such as "Q, W, E, R, T and Y". That's why the keypads in cellphones are called QWERTY Keypads.

    Punctuation Keys

    Punctuation keys are those which relate to punctuation marks. For example, "comma key," "question mark key," "colon key" and "period key." All these keys are located on the right side of the letter keys. Just like the number keys, if you hold the punctuation key and press shift then you can use another function.

    Navigation Keys

    In the keyboard, navigation keys are visible between letter keys and numbers keys and they are also to the right of the keyboard. Navigation keys mainly consist of four arrows: up, down right and left. These keys move the cursor like a mouse in the display screen. With this, you can use these navigation keys to scroll the website history.

    Command Keys and Special Keys

    Command keys are the keys that are used to provide commands such as on "delete," "return" and "enter." It depends on your keyboard whether there are special keys in it or not. For example, keys for lowering and increasing the volume, for moving videos back and forth, etc. The other special keys are "caps lock key," "shift key" and "tab key."

    Types of Keys

    Here, I will give you information about different types of keys present on the keyboard and will also tell about their uses. In a normal keyboard, the keys are divided into the following six categories based on function.

    1. Function Keys

    Function Keys are at the top of the keyboard. These are provided from F1 to F12 in the keyboard. Function Keys are used to perform a particular task. They have a different function in every program.

    2. Typing Keys

    These keys are most commonly used. Typing keys include both types of keys (alphabet and numbers), collectively called Alphanumeric keys. Typing keys also include all types of symbols and punctuation marks.

    3. Control Keys

    These keys are used alone or with other keys to perform a certain task. In a normal keyboard, the Ctrl key, Alt key, Window key, Esc key are used as control keys. Apart from these, keys like Menu key, Scroll key, Pause Break key, PrtScr key etc. are also included in the control keys.

    4. Navigation Keys

    Navigation keys contain Arrow keys, Home, End, Insert, Page Up, Delete, Page Down etc. They are used to move around in a document, webpage etc.

    5. Indicator Lights

    There are three types of Indicator light in the keyboard. Num Lock, Scroll Lock and Caps Lock. When the first light in the keyboard is on, it means that the Numeric Keypad is turned on, and if it is off then it means that the Numeric Keypad is off. The second light indicates us about Uppercase and Lowercase of letters.

    When it is off, the letters are in the lowercase, and when it is on, the letters are in uppercase. The third light is known as Scroll Lock. This indicates us about scrolling.

    6. Numeric Keypad

    We can also call them Calculator keys because a numeric keypad has almost the same (some extra) keys as a calculator. They are used to type numbers.

    Number of Buttons/Keys in a Keyboard

    Key/Symbol

    Explanation

    Windows

    PC keyboards have a Windows key that looks like a four-pane window

    Command

    Apple Mac computers have a command key.

    Menu

    PC keyboards also have a Menu key that looks like a cursor pointing to a menu.

    Esc

    Esc (Escape) key

    F1 – F12

    Information about the F1 through F12 keyboard keys.

    F13 – F24

    Information about the F13 through F24 keyboard keys.

    Tab

    Tab key

    Caps lock

    Caps lock key

    Shift

    Shift key

    Ctrl

    Ctrl (Control) key

    Fn

    Fn (Function) key

    Alt

    Alt (Alternate) key (PC Only; Mac users have Option key)

    Spacebar

    Spacebar key

    Arrows

    Up Down Left Right Arrow keys

    Back Space

    Back space (or Backspace) key

    Delete

    Delete or Del key

    Enter

    Enter key

    Prt Scrn

    Print screen key

    Scroll lock

    Scroll lock key

    Pause

    Pause key

    Break

    Break key

    Insert

    Insert key

    Home

    Home key

    Page up

    Page up or pg up key

    Page down

    Page down or pg dn key

    End

    End key

    Num Lock

    Num Lock key

    ~

    Tilde

    `

    Acute Back quote grave grave accent left quote open quote or a push

    !

    Exclamation mark Exclamation point or Bang

    @

    Ampersat Arobase Asperand At or At symbol

    #

    Octothorpe Number Pound sharp or Hash

    £

    Pounds Sterling or Pound symbol

    Euro

    $

    Dollar sign or generic currency

    ¢

    Cent sign

    ¥

    Chinese/Japenese Yuan

    §

    Micro or Section

    %

    Percent

    °

    Degree

    ^

    Caret or Circumflex

    &

    Ampersand Epershand or And

    *

    Asterisk mathematical multiplication symbol and sometimes referred to as star.

    (

    Open parenthesis

    )

    Close parenthesis

    Hyphen Minus or Dash

    _

    Underscore

    +

    Plus

    =

    Equal

    {

    Open Brace squiggly brackets or curly bracket

    }

    Close Brace squiggly brackets or curly bracket

    [

    Open bracket

    ]

    Closed bracket

    |

    Pipe Or or Vertical bar

    \

    Backslash or Reverse Solidus

    /

    Forward slash Solidus Virgule Whack and mathematical division symbol

    :

    Colon

    ;

    Semicolon

    Quote Quotation mark or Inverted commas

    Apostrophe or Single Quote

    < 

    Less Than or Angle brackets

    > 

    Greater Than or Angle brackets

    ,

    Comma

    .

    Period dot or Full Stop

    ?

    Question Mark




    Some of the Primary Control Keys and their Usage

    1. Esc Key

    Esc key is used to cancel any currently running task. Its full name is Escape Key.

    2. Ctrl Key

    The full name of Ctrl Key is Control Key. It is used in Keyboard Shortcuts.

    3. Alt Key

    Alt key's full name is Alter Key, it is also used in Keyboard Shortcuts.

    4. Window Logo Key

    This key is used to open the Start Menu.

    5. Menu Key

    The Menu Key works similarly to the mouse's Right Click button. It opens the options related to a selected program.

    6. PrtScr Key

    This key is used to take a screenshot of a computer screen.

    Uses of Navigation Keys

    1. Arrow Keys

    There are four Arrow Keys - Up Arrow, Down Arrow, Left Arrow and Right Arrow. They are used to move the cursor and scroll a webpage in the direction of Arrows.

    2. Home Key

    Home Key is used to bring the cursor to the beginning of a document.

    3. End Key

    The End Key is used to bring the cursor to the end of a document. With the help of this, a webpage and document can go down at once.

    4. Insert Key

    The Insert key is used to turn Insert mode on and off.

    5. Delete Key

    The Delete Key is used to delete the text located after Cursor, the selected text and files and folder.

    6. Page Up Key

    The Page Up Key is used to move the Cursor and a page upwards.

    7. Page Down Key

    The Page Down Key is used to move the Cursor and a page down.

    Use of Navigational Keys

    The numeric keypad is on the right side of the keyboard. It has numbers from 0 to 9. In addition, there are also sign of addition, subtraction, division, multiplication and decimal sign.

    Numeric Keypad is used to type numbers. These numbers are also located elsewhere in the keyboard, but they can be written quickly with the Numeric Keypad. Apart from this, Numeric Keypad can also be used like Navigation Keys. Num Lock must be On to use the Numeric Keypad.

    Some Important points about Keyboard

    1. How many function keys does the keyboard have?

    Today's traditional PC keyboards have 12 function keys, from F1 to F12. There are 19 function keys in Apple desktop computer keyboards, F1 to F19.

    2. How many keys does a numeric keypad have?

    Most desktop computer keyboards have a numeric keypad, and if you count all the numbers and symbols then there are 17 keys in it, while the Apple keyboard has 18 keys.

    Due to the small screen of laptops, they usually do not have a numeric keypad.

    3. How many number keys does the keyboard have?

    A keyboard consists of 10 number keys, from 1 to 0.

    4. How many alphabetic keys do the keyboard contain?

    A keyboard consists of 26 alphabetic keys.

    5. How many symbols are there in the keyboard?

    An English QWERTY keyboard has approximately 40 symbols (e.g., @, #, $, and% that do not contain letters and numbers) above 28 keys. This difference is because some keys have more than two symbols.

    6. How many rows of keys in the keyboard are there?

    If we calculate from the beginning, then there are about six rows of keys. Three of these rows contain alphabetic letters.


          

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