How a Device Works

Now it is your turn to describe how a device works. To make the task a bit easier for you, look at this document¹, which gives descriptions of two devices that both use a laser beam: a CD player and a laser printer. The document talks about both these devices in a mixed-up text. First, separate the two texts and then choose one of them to describe the principle of either a CD player or a laser printer in your own words, following the outline for describing a machine.  To submit your text, click here.