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Compact Disc (CD)

            The CD drive reads information stored on a compact disc (CD). CD is an external storage
            device. It can hold up to 700 MB of data. Earlier, CD drive was connected inside the CPU
            box but now it is not. Now, we can connect it using a USB port.

            Types of CDs:

            Digital Versatile or Video Disc (DVD)


                                 Earlier,  DVDs  were  widely  used  in  computers.  At  that  time,  they  had
                                 became a popular medium for storing information and video. The DVD
                                 is  almost  similar  to  a  CD.  Even  the  working  is  also  similar.  The  only
                                 difference is that it can hold more information than a CD.




            Blu-Ray Disc
            A blu-ray disc is an optical disc. It is used for storing large amounts of

            data, and playing videos. The main difference between DVDs and Blu-ray
            discs is storage capacity.
            Flash Drive


            The Flash Drive is a small portable data storage device integrated with a USB (Universal
            Serial Bus) connector.


                             Pen Drive

                             It acts as a portable hard drive and is easy to use as it is small and can
                             be carried in a pocket and plugged into any computer with a USB drive. A
                             pen drive has a storage capacity of up to 1 TB.







                                        The pen drive was invented in 1998 by IBM.





            Memory Card

            It is commonly known as a multimedia memory card. It is very small in
            size, usually 1–1.5 inches. These are used in mobile phones and digital
            cameras. You need to have a card reader to read the stored data on the
            memory card.





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