Tape Magnetic Emissions

• System using the technique of magnetic tape reading and writing, which is identical with the magnetic disk system.

• Medium magnetic tape, a track pararel, the old tape system bears fruit 9 tracks that allows storage one byte at a store one bit of parity on the remaining tracks.

• The system uses a new tape, 18 or 36 tracks as an adjustment to the width of word in a digital format.

• As the disk, magnetic tape, read and written in the form of blocks connected (continue), which is called physical records.

• Block-block is separated by gaps called inter-record gaps.

• Head magnetic tape is a sequential access device.

• Head must adjust the location of records that will be read or written.

• When the head is in place more of the desired records from the tape need rewind first, the new reading is done with the forward direction.

• Very different technology on the disk using the techniques of direct access.

• Lap speed magnetic tape is low so that the transfer of data to be slow.

• Pita begin magnetic abandoned replaced by the type of CD products.