Optical storage devices like CDs and DVDs can be used to store large files like music, videos, and software. CDs typically hold smaller files up to 1GB, while DVDs can store much larger files of several GB like movies. Both allow portable storage and transfer of computer data between devices. CDs and DVDs provide a large storage surface area and can be interactive, but require physical distribution and different players to use.

1. Optical storage deviceHere some information

2. CDs and DVDsCan be used for:CDs tend to be used for large files (but smaller than 1Gb)which are too big for a floppy disc to hold such as music andgeneral animation. DVDs are used to hold very large files (several Gb) such as movie films. Both CDs and DVDs are portable i.e. they can be transported from one computer to another.Both can be used to store computer data.Ara Papikyan

3. CDs and DVDsAdvantages:DVDs and CDs are good for a large surface areaCDs and DVDs are interactiveDisadvantages:CDs and DVDs require physical distribution.

4. DVDs need DVD playerAra Papikyan

5. CD ROM/DVD ROMApplications which require the prevention of deletion of data,accidental or otherwise.CDs used by software companies fordistributing software programs and data; by Music companiesfor distributing music albums and by book publishers fordistributing encyclopaedia’s, reference books etc.DVDs used by film distributors.Ara Papikyan

6. CD ROM/DVD ROMAdvantages:They are self-paced.In CD ROM and DVD Rom can be stored any data until its capacity limit.They a re highly interactive.Disadvantages:For updates it requires new CD.DVD ROM format’s biggest disadvantage it that it can’t be used more than once.Ara Papikyan

7. CD R/DVD RApplications which require a single ‘burning’ of data, e.g. CDs– recording of music downloads from the Internet, recording of music from MP3 format, recording of data for archiving or backup purposes.

8. DVDs – recording of film movies and television programs.Advantages:Long life — without physical damage, data is retained for an estimated 30 years. For this reason, it has uses in archival storage.Disadvantages:DVD-RAM media have always been more expensive than other types of DVD.Less compatibility than DVD+RW and DVD-RW, despite predating both formats .Ara Papikyan

9. CD RW/DVD RWApplications which require the updating of information and ability to record over old data.Not suitable for music recording but is very useful for keeping generations of files.DVDs have between five and ten times the capacity of CDs.Advantages:DVD-RW disc is a rewritable optical disc with equal storage capacity to a DVD-R, typically 4.7 GB.Disadvantage:Not good for recording music filesOld optical drivers can not readAra Papikyan

10. DVD RAMHoused in a cartridge.

11. Used in video recorders, camcorders and computer memory.Advantage:Very fast access of small files on the disc.Disc defect management designed to safeguard data.Disadvantage:Less compatibility than DVD+RW and DVD-RW, despite predating both formats .Ara Papikyan

12. HD DVDUsed in video recorders and computer memory as well as games consoles – main rival to blu-ray.

13. Advantages: