Storage Devices

Storage Devices

1. OPTICAL

   • disadvantages
     • low capacity
     • can easily be scratched
   • advantages
     • portable
     • cheap
     • can be used in a variety of devices
   • examples
     • CDs
       • DVDs
         • blue rays
   • This is a storing method in which data is written and read with lasers

2. MAGNETIC

   • Disadvantages
     • less durable than a solid state
   • Advantages
     • high capacity
     • cost effective
   • Examples
     • PC
       • laptop
   • magnetics are cost effective if you need more storage
   • Data is stored by magnetising the flat surface round plates called platters
     • These platters rotate at a high speed

3. SOLID STATE

   • disadvantages
     • not as cost effective
   • advantages
     • high read write speed
     • durable
       • energy efficient
         • ( measuring the energy
   • examples
     • phones
       • tablets
         • USB stick
   • We use microchips to store data instead of magnetic disks
     • These do not contain any moving parts

4. PURPOSE

   • We use stroage devices for nstoring data easily
   • we also use storage devices to make finding information easier
   • for storing files and documents
   • for accessing information easily

5. MOST DUABLE

   • Solid state

6. MOST PORTABLE

   • optical

7. MOST COST EFFECTIVE

   • magnetic

8. LEAST COST EFFECTIVE

   • optical