What is a Keyboard ?

STANDARD INPUT DEVICE: KEYBOARD

• Keyboard is most commonly used input device.
• It is similar like a type writer which is used to enter data in the computer.
• It contains sets of keys such as alphabets, number & special signs.
• There are two types of keyboard.
  o General purpose keyboard
  o Special purpose keyboard

GENERAL PURPOSE KEYBOARD:

• Standard keyboard which are used in personal computers.
• It contains enough keys which are used in all types of applications so they are known as general purpose keyboard.
• Most popular general purpose keyboard contains 101 keys.
• The general purpose keyboard are divided into following parts:

ALPHANUMERAIC KEYPAD :

• The centred part of the keyboard is known as alphanumeric keypad.
• It contains alphabets, numbers & special signs such as *,!, @, #, $, %,* etc.

NUMERAIC KEYPAD :

• The right most part of the keyboard is known as numeric keypad.
• It contains 0 to 9 numbers & mathematical signs such as +, *, -, /.
• Mainly used for fast data entry in mathematical applications.

ARROW KEYS :

• Set of four keys up, down, left & right.
• Used to move the cursor at left & right or up and down on the screen.
• They are referred as “cursor-control” or “cursor-movement” keys.

FUNCTION KEYS :

• The first line of the keyboard contains a Set of 12 keys with name f1 to f2 are known as function keys.
• Used to generate short-cuts in different software package.

SPECIAL KEYS :

• There are lots of keys that are used for some specific task describes follows:
• TAB: used for gives multiple spaces or move the cursor to next defined position.
• ENTER: used for generate the output of any command.
• SPACE: used to make one blank space between two words.
• BACKSPACE: used to remove the left-most character at cursor position.
• DELETE: used to remove the right-most character at cursor position.
• HOME: moves the cursor at the beginning of the line.
• END: moves cursor at the end of the line.
• PAGE UP: moves or scroll the screen up or previous page of the current page.
• PAGE DOWN: moves the screen to the next page from the currently displayed page.
• PRINT SCREEN: used to print what is currently displayed on the screen.
• INSERT: used to enter text between two characters.
• ESC: used to negate current command or terminate the execution of the program.
• ALT: used to expand the functionality of keyboard. Basically used to generate shortcuts in different application.
• CTRL: used to expand the functionality of keyboard. Basically used to generate shortcuts in different application.
• NUMLOCK: used to on or off the numeric keypad.
• CAPSLOCK: used to type the all inputted text capitally.

SPECIAL PURPOSE KEYBOARD :

• Special purpose keyboard is used for special purpose applications which requiredfaster data entry and rapid interaction with the computer system.
• For example ATM used in banks used special purpose keyboard which contains afew keys.

 

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Basic Computer Questions

Q : The main system board of the computer is called ____.
(A) Motherboard
(B) Processor
(C) Microchip
(D) None of these

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Q : Which of the following system components is the brain of a computer?
(A) Circuit board
(B) CPU
(C) Memory
(D) Network card

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Answer ⇒ { B }

 
Q : What is the built-in permanent memory in a computer called?
(A) RAM
(B) ROM
(C) CPU
(D) CD-ROM

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Answer ⇒ { B }

 
Q : Which of the following is the full form of NTFS?
(A) New Tree File system
(B) New Technology file system
(C) New Table file system
(D) Both B and C

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Answer ⇒ { B }

 
Q : Which of the following is not a hardware processing chip ?
(A) Processing chip
(B) printer
(C) mouse
(D) Java

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Answer ⇒ { B }

 
Q : The monitor of a computer is-
(A) storage device
(B) processing device
(C) input device
(D) output device

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Answer ⇒ { D }

 
Q : Which protocol does Ping use?
(A) TCP
(B) ARP
(C) ICMP
(D) BootP
(E) None of these

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Answer ⇒ { C }

 
Q : If you wish to extend the length of the network without having the signal degrade, you would use a ___.
(A) Gateway
(B) Router
(C) Modem
(D) Repeater
(E) Resonator

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Answer ⇒ { D }

 
Q : A series of instructions that tells a computer what to do and how to do it is called a ______.
(A) program
(B) command
(C) user response
(D) processor
(E) None of these

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Answer ⇒ { A }

 
Q : Verification of a login name and password is known as_____.
(A) Configuration
(B) Accessibility
(C) Authentication
(D) logging in
(E) None of these
Answer ⇒ ??