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Choose the alternative which is an odd word/number/letter pair out of the given alternatives.
  • a)
    Keyboard
  • b)
    Printer
  • c)
    Joystick
  • d)
    Scanner
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Choose the alternative which is an odd word/number/letter pair out of ...

Hence, "Printer" is the correct answer.
Important PointsInput Device: A piece of equipment/hardware that helps us enter data into a computer is called an input device. For example keyboard, mouse, etc. 
1. Keyboard:
  • A simple device comprising keys and each key denotes either an alphabet, number, or number commands which can be given to a computer for various actions to be performed
  • It has a modified version of typewriter keys
  • The keyboard is an essential input device and computers and laptops both use keyboards to give commands to the computer
2. Joy Stick:
  • It is a device that comprises a stick that is attached at an angle to the base so that it can be moved and controlled
  • Mostly used to control the movement in video games
  • Apart from a computer system, a joystick is also used in the cockpit of an aeroplane, wheelchairs, cranes, trucks, etc. to operate them well
3. Scanner:
  • This device can scan images or text and convert it into a digital signal
  • When we place any piece of a document on a scanner, it converts it into a digital signal and displays it on the computer screen
Output Device: A piece of equipment/hardware that gives out the result of the entered input, once it is processed (i.e. converts data from machine language to a human-understandable language), is called an output device. For example printers, monitors, etc. 
Printer:
  • A device that makes a copy of the pictorial or textual content, usually over a paper is called a printer
  • For example, an author types the entire book on his/her computer and later gets a printout of it, which is in the form of paper and is later published
  • Multiple types of printers are also available in the market, which can serve different purposes
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Choose the alternative which is an odd word/number/letter pair out of the given alternatives.a)Keyboardb)Printerc)Joystickd)ScannerCorrect answer is option 'B'. Can you explain this answer?
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