Secondary storage

Secondary storage

1. Solid state storages: USB memory sticks

   • VERY IMPORTANT

2. Optical state storages: DVD, CD and blu-ray disc

   • • These are optical state secondary storage devices

3. Why do we need secondary storage devices????

   • Because its a long term storage
     • You can use it for a long time
   • It is non-vertile
   • It can program long data

4. Magnetic state storages: hard disk drives

   • Hard disk drives save documents, music, programs, applications, videos and more
   • Very cheap and portable