Describe one type of secondary devices in detail.

The input/output device (IO device) is one of the key external devices of the data processing system and can be used interactively with the computer body. Such as: keyboard, tablet, microphone, stereo, monitor and so on. Therefore, input and output devices play a role in the connection between people and machines.

Solid-state drives (SSD) are designed to be connected inside a micro-computer system the same way an internal hard disk would be but contain solid-state memory instead of magnetic disk to store data. SSDs are faster and more durable than hard disk. SSDs also require less power, which can lead to increased battery life for laptops and mobile devices. SSDs are more expensive and generally have a lower capacity than hard disks, but this is changing as the popularity of SSDs continues to increase SDDs are widely used for tablet PCs, such as the iPad.