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WHAT IS AN INPUT DEVICE

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Definition: an input device is any peripheral device that is used to give commands and input data into the computer system for processing  and ouputing of results. 

TYPES OF INPUT DEVICES
the types of input devices are listed below:

  • keyboard 
  • Biometrics (finger print scanner)
  • Barcode reader
  • Card reader
  • Game pad
  • Joysticks
  • Paddle
  • Gesture recognition
  • Graphics tablet
  • Light pen
  • Light gun 
  • Magnetic strip reader
  • Magnetic card reader
  • Magnetic character reader MICR
  • Optical mark reader OMR
  • Remote
  • Touch screen
  • Touch pad
  • Mouse
  • Scanner
  • Microphone 
  • Joystick 
  • Card reader 
  • Light pen
Digital  cameras etc. 

KEYBOARD:The keyboard is  a panel of keys used as an input device  to enter text, characters etc and to give commands into the computer  system .
A standard  desktop keyboard has 101 keys which  includes alphabetical characters, punctuations, symbols, numbers and function keys. 


Keyboard
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Functions  of the keyboard 

  • To input data into the computer 
  • To input commands and instructions  into the computer system. 
  • It provides quick access to menu's
  • It can be used to navigate through  pages
It is basically used for typing and editing of texts and graphicsgraphics

FUNCTION KEYS

A function keys are keys on the keyboard which can be programmed to make application  programs or operaetc
g system to command the interpreter to perform certain functions. e.g key f1,f2,f3,...f12.

NUMERICAL KEY'S 
These are located on the right side of the keyboard. it contains 0-9 keys. It is only active when Num lock is On. 

ALTERNATIVE KEYS
These Keys are used to alternate the keyboard functions. Example Alt keys, shift keys, num lock etc. 

ALPHABETICAL KEYS 
These keys contains alphabet. They are 26 in number. Example A-Z

Arrows keys
Control keys
Navigation keys etc


THE MOUSE
is is basically used to perform windows task operations. The types are
1.optical
2.mechanical 
3.laser 

Uses of the mouse 

  • Pointing 
  • Clicking 
  • Double clicking 
  • Right clicking 
Dragging etc





Why does a computer need an input device?

Today, input devices are important because 
they are what allows you to interact with and 
add new information to a computer. For 
example, if a computer had no input devices, 
it could run by itself but there would be no 
way to change its settings, fix errors, or other
 various user interactions. Also, if you wanted 
to add new information to the computer (e.g., 
text, command, document, picture, etc.), you 
wouldn't be able to do so without an input device.


Location: United Kingdom

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