In the context of computers, tracker balls is a/an _______ device.

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NTPC CBT-I (Held On: 30 Dec 2020 Shift 1)
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  1. output
  2. input
  3. storage
  4. processing

Answer (Detailed Solution Below)

Option 2 : input
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Detailed Solution

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The correct answer is ​Input.

​ Key Points

  • A device that receives data for processing is called an input device.
  • In the context of computers, tracker balls is an input device.
    • A trackball is a pointing device.
    • The trackball was invented by Ralph Benjamin.
  • An input device converts input information into suitable binary code from acceptable to a computer.
  • Major input devices:
    • Keyboard.
    • Lightpen.
    • Mouse.
    • Joystick.
    • Scanner.
    • Microphone.
    • Optical mark reader.
    • Bar code reader.
    • Graphics tablet.
    • Touch screen.

Additional Information

  • Major output devices:
    • Monitor.
    • Printer.
    • Speaker.
    • Projector.
    • Sound card.
    • Headphone.
    • Plotter.
    • Video card.

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