21. The ……. may also be called the screen or monitor :
(a) printer
(b) scanner
(c) hard disk
(d) display
22. Dot-matrix is a type of :
(a) tape
(b) printer
(c) disk
(d) bus
23. What type of device is a digital camera ?
(a) Input
(b) Output
(c) Software
(d) Storage
24. I MICR, C stands for :
(a) code
(b) colour
(c) computer
(d) character
25. What are the units used to count the speed of a printer ?
(a) CPM
(b) DPI
(c) PPM
(d) BIT
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