Which of the following statements about input and output devices is MOST accurate?

Question

Which of the following statements about input and output devices is MOST accurate?

1. A. A capacitive touchscreen is strictly an output device because it displays images, and the touch functionality is handled by the operating system, not the hardware.
2. B. Optical Character Recognition (OCR) scanners are purely input devices because they convert physical text into digital form, and cannot provide feedback or output to the user. (Correct answer)
3. C. A combined digitizer tablet with a stylus is both an input and output device because it can detect pressure and movement and can also display feedback to the user through a connected screen.
4. D. Braille displays are output devices because they allow visually impaired users to sense the display with haptic vibrations.

Correct Answer

Option B — Optical Character Recognition (OCR) scanners are purely input devices because they convert physical text into digital form, and cannot provide feedback or output to the user.

Detailed Solution & Explanation

The correct answer is Optical Character Recognition (OCR) scanners are purely input devices because they convert physical text into digital form, and cannot provide feedback or output to the user..

Key Points

• OCR scanners are purely input devices - they convert physical text to digital form and cannot produce output.
• A is incorrect (touchscreen is both input and output).
• D is incorrect (Braille displays use pins, not vibrations).