The smart Trick of mag tape That Nobody is Discussing
The smart Trick of mag tape That Nobody is Discussing
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この節では、主にコンピュータ用の磁気テープの記録媒体としての特性について説明する。
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Really early or reasonably priced tape recorders moved the tape merely by rotating the tape takeup reel. This simplified style calls for only one motor. This arrangement brings about variable tape pace. As tape accumulates around the motorized takeup reel, the spool of tape step by step improved in diameter, causing it pulling the tape through the recording head significantly quicker.
Magnetic tape was introduced as a data-storage medium in 1951, when it was Utilized in the auxiliary memory of UNIVAC I, the primary digital Laptop created for professional use. For with regards to the future a decade almost all personal computers employed magnetic tape storage units. From the sixties, nevertheless, magnetic disk and magnetic drum auxiliary Reminiscences commenced replacing the tape units in large-scale scientific and organization data-processing devices that involve particularly speedy retrieval of stored data and systems.
Magnetic tapes transform electrical audio indicators into magnetic Strength, therefore serving as The premise in their Doing work theory.
Magnetic tape revolutionized seem recording and copy and broadcasting. It allowed radio, which had constantly been broadcast live, being recorded for later on or repeated airing.
It seems to be appreciably distinctive within the regular Selectric, which is reflected inside, which also differs appreciably from the Selectric.
In record manner, the coil will become an electro-magnet, generating a magnetic field different with electrical present provided by a very low-electrical power amplifier hooked up to an audio resource like a microphone.
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Oberlin experienced fabricated a cotton or silk thread, into which metal dust or limited clippings of wonderful wire could be suspended. These particles have been to be magnetized subsequent the alternating present from the microphone resource.
The previous approach preserves the full top quality on the recording although not the intact original; the latter incurred the same mag tape high-quality loss associated with dubbing a whole copy on the supply tape but preserved the first.
Semi Joseph Started also created the Stahltone-Bandmaschine metal 6 mm large tape recorder in 1935. Nevertheless, wire and metal tape wasn't a fantastic Answer and would be replaced while in the 1930s by slender plastic tape, conceived by Fritz Pfleumer.
LINCtapes and DECtapes experienced related ability and info transfer rate on the diskettes that displaced them, but their obtain periods have been within the buy of thirty seconds to a moment.[citation wanted]