Now, even if you are a teapot, you know what to look for when buying a new hard drive.
We examined the main points of the device and the operation of the hard disk in the computer. Since the physical dimensions of the plates are limited and standardized, increasing the capacity of hard drives is possible in two directions: increasing the number of plates in one device or increasing the amount of recorded information on one plate (recording density). Reading data from the surface of the plates occurs in the reverse order, the movement of the magnetized domains under the read head leads to the appearance of an alternating electrical signal in the coil of the head under the influence of electromagnetic induction. In other words, the plates are filled with logical zeros and onesor recording process. When an alternating electric current is applied to the head, an alternating magnetic field arises which changes the direction of the magnetization vector of the domains under the head at the given moment depending on the signal size.
The hard drive plates rotate at high speed (usually 5,400 or 7,200 rpm for personal computers), and the heads hover above them. In a nutshell, the principle of recording information is as follows.
