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Assertion (A) : Microcontrollers are preferred in Real time applications.

Reason (R) : The on chip I/O integration has no bearing on the speed of microcontroller.

  • A.Both (A) and (R) are true and (R) is the correct explanation of (A).
  • B.Both (A) and (R) are true, but (R) is not correct explanation of (A).
  • C.(A) is true, but (R) is false.
  • D.(A) is false, but (R) is true.

Answer: C

The assertion is true and the reason is false (option C). Microcontrollers are preferred in real-time applications because the processor, memory, timers, interrupts and I/O are on one chip and so respond quickly and predictably.

The reason says that the on-chip I/O integration has no bearing on speed, which is wrong: the integration is what removes slow external buses and gives short response times. Options A and B accept the reason, and D rejects the assertion.

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