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HDD Electronic Components

The whole electronic part of an HDD, except for a microcircuit of the amplifier-switchboard of magnetic heads, is located on a board of storage electronics, forming the specialized microcomputer consisting of the operating microprocessor, random access memory, the digital signal microprocessor (DSP) and auxiliary microcircuits. This microcomputer works under control of its own software (firmware) and provides control of the spindle motor, positioning of magnetic heads and their parking, the control over reading and data recording processes, access optimization to the information, translation of logical addresses (LBA) into physical ones (CHS), reliability analysis (S.M.A.R.T.), the control of the power-saving and noise level.