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Why is a touchscreen considered both an input and output device?

hard📝 Conceptual Q10 of 15
Intro to Computing - How Hardware Works
Why is a touchscreen considered both an input and output device?
ABecause it types letters and moves the pointer
BBecause it can print and scan documents
CBecause it displays images and detects touch input
DBecause it connects to the keyboard and mouse
Step-by-Step Solution
Solution:

  1. Step 1: Understand touchscreen dual role

    Touchscreen shows images (output) and senses touch (input).

  2. Step 2: Identify correct explanation

    It acts as output by displaying and input by detecting touch.

  3. Final Answer:

    Because it displays images and detects touch input -> Option C

  4. Quick Check:

    Touchscreen = output + input device [OK]
Quick Trick: Touchscreen shows and senses touch [OK]
Common Mistakes:
  • Thinking it prints or scans
  • Confusing typing and pointer movement
  • Believing it connects keyboard and mouse

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