An output device is a piece of hardware that is used to display or output data which has been processed or has been stored on the computer.
There are many different kinds of output devices.
You don't need to know a great deal about any particular one but you do need to be able to make suggestions as to the most appropriate output device to use in a given scenario. You also need to be able to explain why your choice is the right one and compare it to other output devices that you could have chosen.
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