While explaining computer peripherals, a teacher asks students to identify a device that produces hard-copy graphical output. Which option is correct?

Correct option is C

A plotter is a specialized output device designed to produce hard-copy graphical output, such as maps, engineering drawings, architectural plans, and large diagrams. Unlike monitors that display soft-copy output, a plotter physically draws graphics on paper using pens or ink mechanisms. This makes it especially suitable for precise, large-scale graphical printing where accuracy is critical. Therefore, among the given options, the plotter correctly matches the requirement of producing hard-copy graphical output.
Important Key Points:
1. What is a Plotter? A plotter is an output device that creates high-precision graphical prints on paper.
2. Type of Output: Produces hard copy (physical output) rather than soft copy.
3. Common Applications: Used in CAD (Computer-Aided Design), GIS maps, engineering drawings, blueprints, and architectural layouts.
4. Working Principle: Draws images using pens or ink based on vector commands, ensuring high accuracy.
5. Advantages:
· High precision
· Ideal for large-size graphics
· Better line quality than regular printers for drawings
6. Examples: Flatbed plotters, drum plotters, and large-format inkjet plotters.
Knowledge Booster:
· Why option (a) Scanner is incorrect? A scanner is an input device that converts hard-copy documents into digital form; it does not produce output.
· Why option (b) Webcam is incorrect? A webcam is also an input device, used to capture images or videos.
· Why option (d) Microphone is incorrect? A microphone captures sound and is an input device, not related to graphical output.