Which of the following is not an output device?

Question

Which of the following is not an output device?

1. A. Scanner (Correct answer)
2. B. Plotter
3. C. Printer
4. D. Projector

Correct Answer

Option A — Scanner

Detailed Solution & Explanation

The correct answer is Scanner.

Key Points

• A scanner is an input device: it reads a physical document or photograph and converts it into a digital image that is sent into the computer.
• Plotter, printer and projector all take data from the computer and present it externally, making them output devices.
• The question asks which is not an output device, so the scanner is the answer.

Additional Information

• A plotter is a specialised output device that draws continuous vector lines, used for engineering drawings, architectural plans and maps.
• Devices that do both are called input/output devices — for example a touchscreen, a modem, or a hard disk drive.