storage

storage

1. secondry

   • it is used because it is needed in a computer system to store data and files when the supply is turned off

2. optical

   • it is a device that uses the photons invisable light or infrared

3. magnetic

   • magnetic tape floppy disk and hard drives

4. solid

   • uses non-volatile memory as a means of storing and accessing data

5. differences

   • solid state is 10x more expensive than optical and magnetic
     • it uses more power but it is 2x faster