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    Digital Versatile Disc (DVD)

                     A DVD looks like a CD and can store up to six times more data than a CD.
                     There are two types of DVDs:

                       Digital Versatile  Disc-Recordable  (DVD-R): It allows only  one-time                     DVD
                       recording.

                       Digital Versatile Disc-Rewritable (DVD-RW): It allows to delete and rewrite data on it.

                                   Blu-ray Disc

                                   The Blu-ray is an optical disc storage device. It is called Blu-ray because it
                                   uses a blue/violet laser light to read and write data. It is used to record and
                                   store high-definition videos and can store up to 25 GB of data which is over
                     Blu-ray Disc  five times more data than a DVD.

                         PURE        A DVD and Blu-ray Disc can store up to 4.7 GB of data and 25 GB of data,
                         FACT        respectively.

                     Pen/Flash Drive
                     A pen drive is a small-sized storage device. It can be carried from one place

                     to another in a pocket. It is used to transfer data from one computer to another
                     and can be connected to the Universal Serial Bus (USB) port of a computer.
                                                                                                              Pen Drive
                                       Memory Card
                                       It is also known as multimedia memory card. It is very small in size usually
                                       1-1.5 inches. These are used  in various  electronic  devices  like  mobile

                      Memory Card      phones, digital cameras, etc. You need to have a card reader to read the
                                       stored data on a memory card.

                     Solid State Drive (SSD)

                     An SSD is a type of storage device that holds information, like your pictures, games and
                     documents. An SSD uses the technique of flash memory to store data. It is much faster than
                     a hard disk. SSDs are more durable and reliable than hard disks. They come
                     in various capacities, typically 128 GB to several TBs. Nowadays, desktop
                     computers and laptops come with SSD instead of traditional hard disk.                       SSD

                             uiz   Bee        Which memory is called volatile memory?
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                                                                                                    Computer Memory   11

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