N/APosted on - 03/02/2015
Hello! When we save something in our computer, we know it gets saved in the hard disk on permanent basis. So consider this situation, I am working in MS-Word and when I click on the icon to save my document and when it is saved, what exactly happens in the hard disk and in what manner is the document saved in the hard disk? I mean we all know computer understands only binary(0 and 1) so this procedure must be complicated, right?
How is data stored in the hard disk?
When someone saves data to the hard disk, the disk will follow a logical system. Data is stored on the hard disk in the form of 0 and 1. The platter is the part of the hard disk which stores the data. Hard disk stores information in the form of magnetic fields. Data is stored digitally in the form of tiny magnetized regions on the platter where each region represents a bit. To write a data on the hard disk, a magnetic field is placed on the tiny field in one of these two polarities: N-S – If North Pole arrives before the south pole and S-N – if the south pole arrives before the north pole while the field is accessed. An orientation in the one direction (like N-S) can represent the ‘1’ while the opposite orientation (S-N) represents “0”. This polarity is sensed by integrated controllers built within the hard disk.