2011年11月27日星期日

How to get the hard drive to store data

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How to get the hard drive to store data

Located on a computer all the information is represented as a binary bit (bits), a series of zero (1 / 0). The nature of the advantages of magnetic particles, they can be polarized magnetic north or South Pole, the correct polarity when enough magnetic field, hard disk drives can alternately or exchange the hard drive can be stored in the same sequence to the polarization requirements, they represent the data stored in the magnetic recording medium disk of particles bits. Hard drive off, they contain two intersecting tracks and sectors slices. Its purpose is to provide a logical data structure, provides a way to distinguish between the data area. In each track, there are some departments. It is in these sectors hard disk to store data.

 

Hard drive platters coated with magnetic paint mainly sensitive to charged particles or tape as a whole, can be called recording media applications. These magnetic particles can be aligned so that they represent binary numbers, the electromagnetic field induced by the internal hard disk drives they are read / write heads. Recording media is very close watch tiny metal shavings like billions of microscopic particles. When the hard disk drive records data into medium-term, it needs of hundreds of these magnetic sensitive particles (usually anywhere from 500 to 100) to store a single binary digit. Record data necessary to reduce the increase in the number of particles is very limited read / write head of the tiny devices, read and record to record data on the media's accuracy, because the magnetic field for the drive's read / write head read and / or record (write) data is such that it has near the border of the initial data.

 

Should shrink further in an attempt to improve the accuracy of the data will greatly increase the possibility of damage. The research continues to be much smaller or even a single particle for some time now to find a viable solution, the data records. Hard drive may be recorded to the hard drive data, by applying a sufficient magnetic recording medium portion (ie, after a pause, hard disc) of data (a series and / or zero, corresponding to the media stored information) recorded specific particles, by adjusting the required pole (North or South). To do so, is there any previous data, were destroyed.

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