Is platter a input device or output device?

Answer 1

An interesting question. Typically, devices fall into a category of 'input' or 'output'. A monitor, for example, would universally be regarded as an output device. A keyboard, an input device. A platter, which I'm assuming is a hard drive platter and not a delicious halal meal, falls neatly into both catgeories. It is an input device when data is being read from it, and an output device where data is being read to it.

Answer 2

Output