There is such an information medium - a diskette. The information capacity of this repository is small, and this led to the fact that it is almost not used. Although there are prospects for the revival of the named technology when applying several other principles of building the information carrier. Now let's find out what information capacity a floppy disk has, when it started to be used, and what dimensions it has.
Magnetic tape
The technology described is based on magnetic tape. It is a portable storage medium where data is recorded and stored. The magnetic tape is placed in a protected plastic case, which is additionally covered with a ferromagnetic layer. To read the data recorded on it, use the drive.
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The most advanced samples at the moment were offered by Sony in the early 1980s. Of course, there were quite a few different competitive offers, but IBM settled on a 3.5-inch sample. In 1984, the format of floppy disks was established, and a more advanced and improved invention was released.It had several fundamental differences. Among them - the presence of a hard plastic case and the closing of the window for reading heads by a movable metal shutter. Changes to this generation of floppy disks have not been made for two decades. And in March 2011, Sony officially announced that they were stopping the production and sale of these drives.
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But be that as it may, the information capacity of the diskette is maximum - only 1.44 MB, which is not enough now even to load one medium music file into mp3. The maximum of modern use is a set of text documents and tables with numbers.
Features
Maybe you have a floppy disk at hand? We are not interested in information capacity right now, just look at the two small holes below (windows). One is always in the open state (it simply does not close). But the second may look different. The recording ability depends on this.So, when the second window is open, it means that nothing can be written to or deleted from the diskette. But once you open it, it will immediately become possible. Here is a security mechanism for these media.
Comparison with other carriers
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And data storages built using flash technology can boast a significant amount of stored information and small size. They can accommodate from several units to hundreds of GB of information. As you can see, although not much time has passed, the amount of stored data has increased thousands and millions of times.