This document discusses different storage devices including CD-R/DVD-R, Blu-ray discs, portable hard drives, USB memory sticks, and flash memory cards. CD-R/DVD-R can record music and video files but only allow single use burning. Blu-ray discs have the largest storage capacity of optical media and can hold 5 hours of HD video. Portable hard drives have more storage than USB sticks or floppy disks but are less portable, holding up to 1 terabyte of data. USB memory sticks enter computers through USB ports and range in size from 1 to 36GB. Flash memory cards are used in cameras, phones, and MP3 players and allow portable storage of many files despite
2. Storage devices
CD-R/DVD-R
Uses
? Applications which require a single ¡®burning¡¯
of data, e.g. CDs
? It records music downloads from the Internet.
? DVDs ¨C recording of film movies and
television programs.
? It is Single Burning data.
? It can be written only once.
By, P.S. RaviTeja,IX-IIT,Ravindra BharathiSchool.
3. Storage devices
Blu-ray
? Used in video recorders and computer
memory as well as games consoles.
? Largest storage of optical media.
? Can hold 5 hours of HD Video.
? Expensive than HD DVD.
? When it is compared with the format it
vanishes.
By, P.S. RaviTeja,IX-IIT,Ravindra BharathiSchool.
4. Storage devices
? Portable hardrives hold far more information than a USB stick or floppy
disk but sacrifices a proportion of its portability
?They can hold up to a terabyte of data at any one time or can be used in
addition to the built-in hard drive of a computer
?These are one of the more expensive options.
By, P.S. RaviTeja,IX-IIT,Ravindra BharathiSchool
5. Storage devices
? A USB memory stick is capable of holding
anything from 1GB to 36GB
?They enter the computer through USB ports
where data can be quickly and easily added
and removed
? Potentially the most popular form of
removable hardware because of its portability
?Prices vary depending on retailer, brand and
memory capacity. There are also rare 64GB
ones that cost in excess
By, P.S. RaviTeja,IX-IIT,Ravindra BharathiSchool.
6. Storage devices Flash memory cards
? Used in digital cameras, palmtops, mobile
phones, MP3 players.
? Its portable.
? Can contain a lot of files
? Less capacity.
? Expensive
By, P.S. RaviTeja,IX-IIT,Ravindra BharathiSchool