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The von Neumann organisation is distinguished by

  • A.one memory and one bus shared by instructions and data
  • B.separate memories for instructions and data, each with its own bus
  • C.a set of registers large enough to hold the whole working set
  • D.the absence of any instruction pipeline in the processor

Answer: A

Sharing the path means an instruction fetch and a data access cannot happen in the same cycle, which is the von Neumann bottleneck. The Harvard organisation splits them and can do both at once, at the cost of more silicon and more pins.

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