Secondary Storage- Computer Science

Secondary Storage- Computer Science

1. Solid State

   • Storage devices with no moving parts. They store data electronically.
     • Sturdier and quieter than magnetic and optical devices.

2. Optical Storage

   • Examples; CDs, DVDs and Blu-ray disks
     • Written and read using lasers, meaning they have to spin
       • They spin, creates noise.

3. Magnetic Storage

   • Examples; Floppy disks which are rarely used now, internal hard disks
     • Divided into tracks and sectors
       • 3 tracks in a circular shape each divided into 8 segments
         • Disk is spun to access each part of information
           • Spins at 7,200 rpm