A printer is an output device that produces a paper copy of information from a computer.

Explanation:

Printers are available in different sizes, styles, speeds, and price.  Some types of printers include dot matrix, ink jet, and laser.  A dot matrix printer has pins that hit a ribbon to form characters.  An ink jet printer has a fine jet of electricity charged ink hit the paper to form characters.  A laser printer has a laser beam of heat to make toner stick to paper to form characters. 
 

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Look up "Printer" in the TechEncyclopedia.
 
 

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