Define VDU. Name its two types.
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A Visual Display Unit (VDU) commonly known as monitor, is the most common device for displaying the output of the computer-processed information.
The two types of VDU are as follows:
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Explain any three types of input devices.
Differentiate between Impact printers and Non-impact printers
Discuss the following devices:
(a) Light Pen
(b) Graphic Tablet
(c) CD-ROM
(d) DVD