Which statement about computer printers is correct?

Concept

Printers are classified by their printing mechanism. Impact printers create marks by physically striking an inked ribbon against paper, whereas non-impact printers form an image without such mechanical striking.

Dot matrix printers use striking pins and an inked ribbon. Laser printers use electrostatic imaging, toner, and heat; printer resolution is measured as spatial dot density, normally in dots per inch (dpi).

Application

• The dot-matrix-as-non-impact statement conflicts with the pin-strike mechanism because dot matrix is an impact technology.

• The laser-as-impact statement conflicts with electrostatic imaging because laser printing is non-impact.

• The Mbps statement mixes two different quantities: Mbps measures data-transfer rate, while dpi measures printer resolution.

• The comparison statement follows from the mechanisms: repeated pin impacts make dot matrix printers noisy, and typical laser printers provide faster printing and higher-resolution output.

Cross-check

Check both mechanism and unit: physical pin strikes identify the impact device; electrostatic toner imaging identifies the non-impact device; dpi, not Mbps, describes print resolution.

Therefore, the correct statement is: Compared with laser printers, dot matrix printers are generally noisier, slower, and produce lower-quality output.