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Which devices among the following are usually designed on the complex electromechanical principle ?

  • A.Printing devices
  • B.Input devices
  • C.
    Storage devices
  • D.
    Peripheral devices

Answer: B

Correct answer: Peripheral devices

Peripherals - printers, keyboards, disk drives, tape units - are electromechanical and electromagnetic devices of some complexity, in contrast with the purely electronic circuits of the CPU and memory. Printing devices and input devices are both classes of peripheral, so naming either of them alone is too narrow.

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