The Single Best Strategy To Use For magnetic tape
The Single Best Strategy To Use For magnetic tape
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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。
In a few early prototype linear video tape recording techniques designed within the early 1950s from corporations like Bing Crosby Enterprises, RCA, and the BBC's VERA, the tape speed was very higher, over 200 in/s (510 cm/s), to sufficiently capture the big level of picture facts. The necessity for any large linear tape velocity was created unnecessary Together with the introduction on the Specialist Quadruplex technique in 1956 by Ampex, which segmented the fields of the television image by recording (and reproducing) several tracks in a higher-speed through the width of the tape for every discipline of video By the use of a vertically spinning headwheel with four different movie heads mounted on its edge (a technique identified as transverse scanning), enabling for your linear tape pace to become A lot slower.
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Magnetic tape was introduced as a data-storage medium in 1951, when it absolutely was Employed in the auxiliary memory of UNIVAC I, the main electronic Personal computer made for professional use. For concerning the upcoming a decade almost all personal computers employed magnetic tape storage units. Via the sixties, nonetheless, magnetic disk and magnetic drum auxiliary Recollections began changing the tape units in substantial-scale scientific and business knowledge-processing systems that call for really quickly retrieval of stored information and applications.
Magnetic tape is actually a plastic tape with magnetic coating. It is just a storage medium on a big open up reel or inside of a scaled-down cartridge or cassette (just like a audio cassette). Magnetic tapes are less costly storage media. They can be tough, is often prepared, erased, and re-published. Magnetic tapes are sequential accessibility devices, which suggest that the tape has to rewind or shift forward to the location in which the requested magnetic tape information is positioned inside the magnetic tape.
The magnetic tape moves on tape generate from the provision reel to take-up reel, with its magnetic coated facet passing above the study/write head.
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The good realistic advantage of tape for studios was twofold: it allowed a performance to get recorded with no 30-moment time limitation of the phonograph disc, and it permitted a recorded effectiveness for being edited or erased and re-recorded over and over on a similar bit of media with no waste. For the first time, audio could be manipulated as a Actual physical entity, as well as recording course of action was tremendously economized by doing away with the necessity for your extremely educated disc-cutting engineer to generally be current at every single recording session.
Should the tape is a component of a library, robotic assortment and loading the proper cartridge into a tape push can include latency. Within an archive, latency just isn't an issue. With tape archiving, there isn't any on the net duplicate for speedy retrieval, as every little thing is vaulted for the long run.
We offer quick, handy returns with at the least a single absolutely free return option: no shipping expenses. All returns should comply with our returns plan.
磁性層の成膜には、塗布、蒸着、スパッタなどの方法がある。一般的には片面だけだが両面に成膜した製品も見られる。
Ordinarily, acetate is useful for less expensive tape, and Mylar for dearer tape. Acetate tends to interrupt less than ailments that Mylar would endure, while probably stretch. The standard of the oxide's binder is also critical, for it had been popular with previous tape for your oxide and backing to independent.