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COMPUTER STORAGE - Coggle Diagram

- - - - these disks rapidly spin while a small arm moves above them reading or writing datas
  - - - the datas is read by a laser beam over the disk, reading the change position of reflected beams
    - - CD's
        (comact disk)
        can hold up to 700 MB
        DVD's
        (Digital Versatile Discs)
        can hold up to 9,4 GB
        
        CD/DVD-R: start blank and can recorde new content only one time
        
        CD/DVD-RW: content can be ever rewrite
        
        CD/DVD-ROM: datas that can only be read
        
        blue ray DVD: only a type of dvd that can hold up to 50 gb
- - - - the datas that the ram use, comes from the hard disk, the full memory