external storage devices

external storage devices

1. magnetic storage devices

   • hard discs
     • a large magnetic device that holds lots of data
       • hold lots of data
       • put on the motherboard when computer is made
     • non removable
   • a device that stores data using patterns on a magnetic medium
   • magnetic tape
     • a magnetic peice of tape used in recording sounds or other data
   • floppy discs
     • hold much less data than hard discs
     • old and large
     • removable and used in 1980s
     • only hold 100 to 500 mb
   • removable disc drives
     • mix of hard disc and floppy drive
     • hold lots of data and are removable
     • invented in 2000s

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