Backing+Storage+and+Memory

**Backing Storage and Memory Revision Notes**

 * Introduction**
 * Unsaved data is kept in its memory.
 * Saved data is kept in its backing storage.
 * Data is stored as files.
 * Storage medium is the physical object used to storing data.
 * Storage device handles the use of the medium.


 * File Size**
 * Bit (0 or 1)
 * Byte (8 bits)
 * Kilobyte (1024 bytes)
 * Megabyte (1024 kilobytes)
 * Gigabyte (1024 megabyte)
 * Terabyte (1024 gigabytes)

Hard Disks

CDs, DVDs, HD DVD and Blu-ray

Backups

Memory

Storage Devices