storage devices

storage devices

1. purpose

   • what do we use storage for?
     • storing data permanently

2. optical

   • disadvantage
     • low capacity
   • advantages
     • can be easly scrath
     • portable
     • cheap
   • examples
     • CDs,DVD and blue ray

3. Solid state

   • disadvantage
     • not as cost evective
   • examples
     • flash dive and sd card
     • phones,tablets and laptops
   • advantages
     • energy eficente
     • durable
     • high read write power

4. Magnetic

   • advantages
     • easier to save thing than in optical device
     • cost evective
     • high capacity
   • disadvantage
     • less durable than solid state
   • examples
     • PCs,desktop and gaming console

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