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Have you ever wondered how a memory card is the size of a fingernail! How many tens of gigs of information (including thousands of photos, videos and other files) does it keep in itself? What was the form of information storage in computers from the beginning and how did it reach this current technological level? How do magnetic tapes work? How do floppy disks and hard disks store information magnetically? How does the optical method of storing information on CDs and DVDs work? How do flash drives and SSDs work? In this video, I examine three common methods of storing digital information, including magnetic, optical, and semiconductor, and explain how devices that store information with these methods work. If you want the production of interesting scientific videos to continue with better speed and quality, you can support the channel of Khalqat magazine through the links below. For friends inside Iran: https://zarinp.al/khelghatmag To support the channel, please become a member and hit the notification bell and share the channel with anyone you think would benefit from it so that you too can play a role in promoting science. . https://www.youtube.com/khelghatmag?s... To contact me, you can use the following email: [email protected]