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Question

A dot-matrix printer ________________.

A
is an input-output device
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B
is an output device only
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C
is an input device only
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D
None of these
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Solution

The correct option is B is an output device only

A dot-matrix printer is an output device only.

Output Devices . Dot matrix printers are impact printers. They produce an image by hammering a column of 9 or 24 pins against a ribbon. ... If carbon paper is put into the printer then a dot matrix printer can print more than one copy of a document at a time.

Dot matrix (impact) printing is a type of computer printing which uses a print head that moves back-and-forth, or in an up-and-down motion, on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter.

All dot matrix printers create characters on paper by striking an inked ribbon with a hard surface. Unlike typewriters, which use a similar mechanism, dot matrix printers do not have fixed character shapes or fonts. Instead, each individual character is formed by the arrangement of a series of pins.

Dot matrix printing, sometimes called impact matrix printing, is a type of computer printing which uses a print head that moves back-and-forth, or in an up-and-down motion, on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter.


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