Hard Drives and SSD
Hard Drive's and SSD's are components of computeres. Without these computers, tablets, laptops and smarphones. They are both used for storing data such as history and documents, the SSD is the more practicle of the two, it is smaller, lighter and have no moving parts so therefor more expensive than the standard hard drive. It is because of this that many large software companies such as apple have opted for this. The mac book air now has no nard drive, this means that it has no dvd player.