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Laser Jet printer speeds are measured in pages per minute (ppm) what do we use to measure dot-matrix printers?

  • A.lines per inch
  • B.lines per sheet
  • C.characters per inch
  • D.characters per second

Answer: D

Correct answer: characters per second

Dot matrix speed is quoted in characters per second, since the head prints one character at a time. Page printers are rated in pages per minute.

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