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The black rubber phonograph record is the average person to the passing use phonograph player machine broadcast phonograph record name. This kind of phonograph record is one kind of black disc-shaped film, (later period changes to polyvinyl-chloride with the resin, namely PVC) suppresses, above inscribes the concave-convex pit grain, records the sound. The early black rubber phonograph record only then the single track, to afterward developed into double track's duplex sound track sound axle.
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The magnetic tape (Magnetic tape) is one kind of non-volatile storage media, by has may magnetize the duplicate material the plastic belt to be composed (usually is curls up), because the magnetic tape is the sequential access installment, specially a read-write massive material condition, therefore the magnetic tape is the traditional backup.
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The laser video disk (Laserdisc, LD) is the kind in 1980 to the 90s in the popular phantom storage media, mainly serves as the storage movie, now has been replaced completely by DVD.
The laser video disk measurement and 12 吋 black rubber phonograph record is similar, surface and music disc (CD) similar. The laser video disc player (and CD similar) engraves in advance by the laser read records on the small dish piece the signal, and transforms the phantom signal (for example PAL, NTSC) to supply the television broadcast.

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The black rubber phonograph record is the average person to the passing use phonograph player machine broadcast phonograph record name. This kind of phonograph record is one kind of black disc-shaped film, (later period changes to polyvinyl-chloride with the resin, namely PVC) suppresses, above inscribes the concave-convex pit grain, records the sound. The early black rubber phonograph record only then the single track, to afterward developed into double track's duplex sound track sound axle.
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The magnetic tape (Magnetic tape) is one kind of non-volatile storage media, by has may magnetize the duplicate material the plastic belt to be composed (usually is curls up), because the magnetic tape is the sequential access installment, specially a read-write massive material condition, therefore the magnetic tape is the traditional backup.
…
The laser video disk (Laserdisc, LD) is the kind in 1980 to the 90s in the popular phantom storage media, mainly serves as the storage movie, now has been replaced completely by DVD.

The laser video disk measurement and 12 吋 black rubber phonograph record is similar, surface and music disc (CD) similar. The laser video disc player (and CD similar) engraves in advance by the laser read records on the small dish piece the signal, and transforms the phantom signal (for example PAL, NTSC) to supply the television broadcast.