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A device invented by Dr. Bobeck in 1966, for mass storage of data is

  • A.Punched paper tape
  • B.Magnetic bubble storage
  • C.Magnetic tape
  • D.Magnetic disk

Answer: B

Correct answer: Magnetic bubble storage

Andrew Bobeck demonstrated magnetic bubble memory at Bell Labs in 1966: tiny cylindrical magnetic domains moved through a thin garnet film by a rotating field, giving non-volatile storage with no moving parts. It was overtaken by cheap semiconductor memory and disks.

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