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Compact Disc (CD): The CD drive reads information stored on a Compact Disc (CD). CD is an
                     external storage device. The lifespan of an optical disc is longer than a magnetic disc. It can
                     hold up to 700 MB of data.

                    Types of CDs:
                    •  CD-ROM (Compact Disc Read Only Memory): It contains data that was written when the
                       CD was manufactured. The data cannot be modified or erased.

                    •  CD-R (Compact Disc Recordable): It can be used to write data by
                       the user only once. This data cannot be changed or erased.

                    •  CD-RW (Compact Disc Rewritable): It can be used to write data
                       again  and  again.  The  data  can  be  erased  and  modified  as  many
                       times as required.                                                                 CD


                                             Digital Versatile/Video Disc (DVD): It is a widely used and popular

                                            storage device. It is almost similar to a CD. The only difference is that it
                                            can hold more information than a CD. DVDs are widely used for storing
                                            and viewing movies and other data.

                         DVD


                     Blu-ray Disc: It is an optical disc. It is used for storing a large amount
                     of data and playing videos. The main difference between a DVD and a
                     Blu-ray disc is storage capacity.
                                                                                                         Blu-ray Disc


                     Flash Drive: Also known as pen drive, it is a small portable data storage device integrated
                     with a Universal Serial Bus (USB) connector.


                                           •  Pen Drive:  Its compact size allows it to be easily carried in a pocket
                                              and plugged into any computer with a USB port. It typically offers
                                              storage capaicty of up to 1 TB.
                            Pen Drive


                     Memory Card: It is commonly known as multimedia memory card. It
                     is usually 1–1.5 inches in size and are most often used in mobile phones
                     and digital cameras. A card reader is needed to read stored data on a
                     memory card.
                                                                                                         Memory Card
                     Solid State Drive: It is a storage device that uses flash memory to store
                     data, offering faster access speeds than traditional hard disk. Unlike HDDs, SSDs have no
                     moving parts,  making them more  durable,  quieter,  and  quicker  in  terms of  data  retrieval
                     and boot times. SSDs are commonly used in modern computers and laptops for improved
                     performance.




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