Input and Output Devices – Exercise – 1

26. The OCR recognizes the …… of the characters with the help of light source :

(a) size
(b) shapes
(c) colour
(d) used ink

Answer
Answer : (b)
Explanation
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27. Laser printers belong to :

(a) line printer
(b) page printer
(c) band printer
(d) dot matrix printer

Answer
Answer : (b)
Explanation
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28. A device that make copies and reproduces text and images is called :

(a) CPU
(b) memory
(c) printer
(d) scanner

Answer
Answer : (c)
Explanation
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29. Dot matrix printer is :

(a) unidirectional
(b) bi-directional
(c) sequential
(d) random

Answer
Answer : (b)
Explanation
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30. The higher the resolution of a monitor, the :

(a) larger the pixels
(b) less clear the screen is
(c) further apart the pixels
(d) closer together the pixels

Answer
Answer : (d)
Explanation
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