U disk data storage principle

When a piece of paper is filled with text, the mass of the paper will become larger. Will the quality of a USB flash drive change after it is full of information?

In order to answer this question, we need to understand the storage principle of U disk. USB flash drives, solid-state drives, and mobile phone memories all use flash memory technology, which uses electrons to store information. The information storage area in flash memory is made up of many tiny transistors with control gates above them that control the movement of electrons between the source and drain by raising or lowering the voltage. By adding an insulating device between the source, drain, and control gate, electrons can be stored in them so that they are not lost even after a power outage. In this way, we can represent information by the presence or absence of electrons.

From the storage principle point of view, after the U disk is full or stores different information, the electronic storage situation will be different, resulting in different quality of the U disk.

Optical disc is a commonly used storage device, except flash memory. More than ten years ago, the recording disks we used were usually disposable storage media. Once the recording was completed, the information could not be erased and rewritten. This type of disc records data by scratching the surface with scratches that can usually be seen with the naked eye. Once a disc has scratches on it, its quality decreases.

The currently widely used rewritable optical disc is a medium for recording information. It uses a laser to heat a certain location on the disc, melting the material in that area and condensing it into an amorphous tissue under the high temperature generated by the laser. This amorphous structure can be restored to a crystal structure by heating again, thereby achieving the rewritable function. Overall, the disc only changes the arrangement of matter and does not produce a significant change in its mass.

In earlier times, media such as floppy disks and tapes were mainly used to store information, and information was recorded through magnetic substances. The disk contains many tiny magnetic substances, which represent different data according to different arrangement directions. Writing data or storing different data simply changes the orientation of the magnetic material and does not affect the quality of the floppy disk or tape.

If you ask what happens to the quality of information after it is stored in the human brain? This is indeed a good question and a very complex one. Humans still have relatively little understanding of the brain. Will the quality of the brain change after it stores new information? What will change? Such questions must be answered later.

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