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MAGNETIC TAPE
BY: AASHISH SHRESTHA
Here are some images of Magnetic tape:
Magnetic tape:
 Consists of a thin ribbon of plastic, one side of which is coated with
a material that can be magnetized ...
Construction:
 It consists of a
circular disc type
structure around
which the Reel is
wrapped.
 Length and width of magnetic tape: The magnetic tape is commonly 732m long by
length and 22mm by width.
 Magnetic mater...
Working of Magnetic Tape:
 An electric current in a
coil of wire produces a
magnetic field similar to
that of a bar magne...
 Tape heads are made from rings of
ferromagnetic material with a gap
where the tape contacts it so the
magnetic field can...
Advantages and Disadvantages:
 Advantages:
 High data storage at cheap rate.
 Suitable for batch processing.
 No compl...
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Magnetic tape

  1. 1. MAGNETIC TAPE BY: AASHISH SHRESTHA
  2. 2. Here are some images of Magnetic tape:
  3. 3. Magnetic tape:  Consists of a thin ribbon of plastic, one side of which is coated with a material that can be magnetized to record a binary data.  A sequential storage media  Usually cartridge type  Serves as a primary means of = backup = a method of transferring data between system = a cost effective way to store data that does not have to be accessed immediately
  4. 4. Construction:  It consists of a circular disc type structure around which the Reel is wrapped.
  5. 5.  Length and width of magnetic tape: The magnetic tape is commonly 732m long by length and 22mm by width.  Magnetic materials: The one side of the tape is coated with magnetic material. The magnetized dot represents 1 and demagnetized dot represents 0.  Channels or tracks: The tape is divided width-wise in rows. These rows are called tracks or channels.  Frames: The vertical divisions of a tape along with length are called frames.  Storing capacity: The storing capacity of the magnetic tape is 500MB, 2GB, 10GB and more  Records and blocks: The group of data stored and arranged in tape is called records. A group of records is called block  IGB(Inter Block Gap): The gap between two consiquiting block is called IGB.
  6. 6. Working of Magnetic Tape:  An electric current in a coil of wire produces a magnetic field similar to that of a bar magnet, and that field is much stronger if the coil has a ferromagnetic (iron- like) core.
  7. 7.  Tape heads are made from rings of ferromagnetic material with a gap where the tape contacts it so the magnetic field can fringe out to magnetize the emulsion on the tape. A coil of wire around the ring carries the current to produce a magnetic field proportional to the signal to be recorded. If an already magnetized tape is passed beneath the head, it can induce a voltage in the coil. Thus the same head can be used for recording and playback
  8. 8. Advantages and Disadvantages:  Advantages:  High data storage at cheap rate.  Suitable for batch processing.  No complicated software is required for file handling.  Disadvantages:  Slow data transfer rate.  Data are arranged in sequential order, so specific data cannot be retrieved randomly.  Larger in size than floppy so not so easy in handling.
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magnetic tape

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