Question

Which output device of a
computer is used for training
presentations?​

Answer 1

An output device is any piece of computer hardware equipment which converts information into human read able form. It can be text, graphics, tactile, audio, and video. Some of the output devices are Visual Display Units (VDU) i.e. a Monitor, Printer graphic Output devices, Plotters, Speakers etc.

Answer 2

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external speaker is used to output sound from multimedia presentation.