storage devices

storage devices

1. purpose

   • what do we use storage for ?
     • storing data (files,operating system,applications)permanently

2. magnetic

   • examples
     • PCs,desktop computers,laptops and game consoles.
   • advantages
     • very good memory
   • disadvantages
     • if a bit of the tape is broken ,it would make the whole tape useless

3. optical

   • examples
     • CDs,DVDs and Blu-rays
   • advantages
     • you can view data
   • disadvantages
     • smaller storage space

4. solid state

   • examples
     • iphones,tablets and gaming PCs/laptops.
   • advantages
     • faster than hard drive disk
   • disadvantages
     • quite expensive