Question

when is a scanner used for input discuss various type of scanner​

Answer 1

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When referring to hardware, a scanner or optical scanner is a hardware input device that optically "reads" and image and converts it into a digital signal. For example, a scanner may be used to convert a printed picture, drawing, or document (hard copy) into a digital file which can be edited on a computer.

Answer 2

Answer:

scanner is used as input for reading text or pictures printed on paper and translate into a form that computer can use

*various types of scanner are:

1-Hand-held scanner = handheld scanner are very small in size which can be held in hand

2-Drum scanner = drum scanner medium size scanner with rolling drum