![]() ![]() Floppy disks started with a crazy large 8-inch format.Floppy disks are essentially “magnetic paper encased in plastic”, and there are 3 common sizes: Even though we no longer use cassettes and videotapes these days, tapes for server backup are still in use. The oldies should know this one very well, and there are various types of tapes – Cassette tapes for audio, videotapes, and even tape drives for server backup. In short, tapes are just long magnetic strips. Now that you know, keep your card safe and don’t ever damage that stripe. Because of the motor and read/write head, these are also commonly known as “mechanical hard disks”.Įver notice the black stripe behind credit cards and ATM cards? Ever wonder why people swipe these black stripes across a machine? That is because the black stripe is actually magnetic and contains a unique identification number. Hard disks store data in magnetic platters and use read-write heads just like the old-school retro record players. The regular Joe that we find in most computers. Put a bazillion mini magnets into a small box, and we get a magnetic storage device. In layman’s terms, the north/south pole of the magnet can be used to represent a data bit. Let us now start with one of the most traditional forms of data storage, using magnets. ![]()
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