storage

storage

1. primary

   • ROM
     • chip
     • read only
     • can not be altered by users
     • content stays when power removed
   • RAM
     • chip
     • read and write
     • can be altered by users
     • content goes when power removed

2. seconary

   • magnetic disk
     • hard drive
     • portable hard disk
   • optical disk
     • CD-ROM
     • DVD-ROM
     • CD-R
     • CD-RW
     • DVD-RAM
     • DVD-R
     • DVD-RW
   • magnetic cartridge
   • flash/pen drive
   • flash memory