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Which of the following groups consist of only input devices?     
  • a)
    Mouse, Keyboard, Scanner
  • b)
    Mouse, Keyboard, Plotter
  • c)
    Mouse, Keyboard, Printer
  • d)
    Mouse, Keyboard, Monitor
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following groups consist of only input devices? a)Mouse, ...
Answer:

The correct group that consists of only input devices is group A, which includes the mouse, keyboard, and scanner. Here is a detailed explanation:

Group A: Mouse, Keyboard, Scanner


  • Mouse: A mouse is an input device that allows users to control the cursor and perform actions on a computer screen by moving the device.

  • Keyboard: A keyboard is an input device that allows users to input text, numbers, and commands by pressing various keys.

  • Scanner: A scanner is an input device that captures images and documents and converts them into digital format, which can be stored or manipulated on a computer.


These three devices in group A are all input devices because they are used to input data or commands into a computer system. The mouse and keyboard are commonly used for general computer navigation and input, while the scanner is specifically used for digitizing physical documents or images.

The other groups (B, C, and D) include devices that are not strictly input devices:

Group B: Mouse, Keyboard, Plotter


  • Plotter: A plotter is an output device that is used to draw graphics or images on paper or other media based on instructions from a computer.


Group C: Mouse, Keyboard, Printer


  • Printer: A printer is an output device that produces hard copies of documents or images from digital files.


Group D: Mouse, Keyboard, Monitor


  • Monitor: A monitor is an output device that displays visual output from a computer system.


Therefore, group A is the only group that consists of solely input devices.
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Most Upvoted Answer
Which of the following groups consist of only input devices? a)Mouse, ...
Understanding Input Devices
Input devices are hardware components that allow users to input data and commands into a computer system. They are essential for user interaction with the computer.
Group Analysis
Let’s analyze the options provided to identify which group consists only of input devices:
  • Option A: Mouse, Keyboard, Scanner
    • Mouse: A pointing device used to interact with the computer's graphical interface.
    • Keyboard: A device used to input text and commands.
    • Scanner: A device that converts physical documents into digital format.

    All three are input devices, making this option correct.
  • Option B: Mouse, Keyboard, Plotter
    • Plotter: A device used for printing vector graphics, which is an output device.

    This option is incorrect as it includes an output device.
  • Option C: Mouse, Keyboard, Printer
    • Printer: A device that produces a hard copy of digital documents, hence an output device.

    This option is also incorrect due to the inclusion of an output device.
  • Option D: Mouse, Keyboard, Monitor
    • Monitor: A device that displays visual output from the computer.

    This option is incorrect as it contains an output device as well.

Conclusion
Option A is the only group that consists solely of input devices: the mouse, keyboard, and scanner. Understanding the difference between input and output devices is crucial for grasping how computers function and how users interact with them.
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