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To read, there are very small electric coils that sense the magnetic polarization; these coils are mounted on arms which pivot and move across and very close to the surface of the disk.
(see the image link under Sources... below)
These coils read the polarization which represents the 1's and 0's of the binary information stored on the magnetic disk.
The write mechanisms make use of the electricity flowing through a coil in the write head that produces a magnetic field. Electrical pulses are sent to the write head, with different patterns of positive and negative currents. The current in the coil of the write head induces a magnetic field across the gap between the head and the magnetic disk platter, which in turn magnetizes a small area on the recording medium.
The Read/Write head assembly works to read and write using basically the same technology, early units used the same hardware for both, modern units can have slightly different configurations of the microscopic gaps between coils and magnets etc. for optimum performance.
What else can I help you with?
Data is written to and read from a floppy disk via a magnetic?
Yes, data is written to and read from a floppy disk using a magnetic read/write head that interacts with the magnetic coating on the disk. When writing data, the magnetic head aligns the magnetic particles on the disk surface to represent the information. When reading data, the head detects the magnetic orientation of the particles to retrieve the stored information.
Why hard disk is magnetized by iron oxide?
Hard disk drives use a magnetic coating of iron oxide to store data because it can be easily magnetized to represent binary data (0s and 1s). The magnetic polarity of the iron oxide particles can be changed by a magnetic head, allowing data to be written and read from the disk.
Reading data is performed in magnetic disk by?
Read/Write Heads
What is the difference between an optical and a magnetic disk?
A magnetic disk is a disk which stores information magnetically, and is read/written with a small magnetic head (e.g. a hard disk)An optical disk is a disk which stores information optically, usually as a series of pits and peaks, and is read/writMagnetic Storagea) Stores data in magnetic form & it doesn't use laser to read/write datab) It is affected by magnetic field.c) It has high storage capacity.d) Data accessing is high as compared to CD's and DVD's.e) Magnetic storage devices are ; Hard disk , Floppydisk, Magnetic tape etc.Optical Storagea) Stores data optically & uses laser to read/write.b) It is not affected by magnetic field.c) It has less storage than hard disk.d) Data accessing is high as compared to floppy.e) Optical storage devices are ; CD-ROM,CD-R,CD-RW, DVD etc.
What stores zeros and ones in magnetic form and reads them with an electromagnetic head?
A hard disk drive (HDD) stores data in magnetic form by magnetizing tiny areas on a spinning disk. It uses an electromagnetic read/write head to read and write data by detecting the magnetic orientation of the areas on the disk.
Why hard disk is a magnetic disk?
Common hard disks with read/write heads are magnetic storage. The newer SSD (solid state drive) hard disks are not magnetic because there are no read/write heads. Solid state means no moving parts. SSD drives are labeled as such so you know what you are buying.
What is the name of the smallest unit of data that is read to or written from disk?
sector
Does a floppy disk drive use laser beam to read and wright?
No. A laser is not used to read or right to a floppy disk.The laser is usedto read and right data to an optical disk such as a dvd or cd. The floppy disk is a magnetic storage medium. A read right head is basically a small coil. When a current is passed thru the read/right head, itgenerates a magnetic field which aligns the small particles on the floppy disk in one of two directions. the direction of the particle indicates a 1 or 0which is the essence of data on a computer. to find out more details of the construction of a floppy disk and how data is saved, google floppy disk.
What are the concentric magnetic circles that run around a disk platter called?
The concentric magnetic circles that run around a disk platter are called "tracks." Each track is a circular path on the surface of the disk where data is recorded. Data is organized in these tracks, and the read/write head of the disk accesses the information by moving to the appropriate track.
Contain one or more inflexible circular platter that use magnetic particles to store datainstructions and information?
This describes a hard disk drive (HDD), which contains one or more rigid circular platters coated with magnetic particles used to store data. The data is written, read, and erased magnetically using a read/write head.
Which process converts binary information into patterns of magnetic flux on a hard disks surface?
The process that converts binary information into patterns of magnetic flux on a hard disk's surface is called magnetic recording. This involves encoding binary data (0s and 1s) into magnetic fields, which are created by the read/write head of the hard drive. The head alters the magnetic orientation of tiny regions on the disk's surface, representing the stored data as changes in magnetic flux. When data is read, the changes in magnetic orientation are detected and translated back into binary information.
What must happen before any data can be read or written on a hard disk?
the right place on the hard disk has to be found, then the read/write head must be placed there, then the sector (a small part of the hard disk) is read or written, if it's read, the data is moved into the memory, maybe by the DMA (Direct Memory Access) Controller. Is it's a write operation, the data must first be given to the Hard Disc Controller.
