storage devices

storage devices

1. optical

   • examples
     • CDs,DVD and blu-rays.
     • CD-ROM
     • DVD-ROM
   • Disadvantages
     • low capicity
     • not portable
     • can be easily scratched
   • Advantages
     • cheap

2. purpose

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

3. magnetic

   • advantages
     • high capicity
       • cost affect
   • disadvantages
     • less durable

4. solid state

   • disadvantages
     • very exspensive
       • advantages
         • high durbility