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Which of the following is used to reduce the external memory cycle?

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Which of the following is used to reduce the external memory cycle?

(a) internal hardware stack

(b) internal software stack

(c) external software stack

(d) internal register

The question was asked during an online exam.

This intriguing question comes from The mechanism of Interrupts topic in division Interrupts and Exceptions of Embedded Systems

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Best answer
Correct choice is (a) internal hardware stack

Explanation: Some of the processors use internal hardware stack which helps in reducing the external memory cycle necessary to store the stack frame.

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