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Which bus is used for input and output in case of microprocessor operation?

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Which bus is used for input and output in case of microprocessor operation?

(a) Address bus

(b) System bus

(c) Control bus

(d) Data bus

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I would like to ask this question from Read Only Memory (ROM) topic in section Memory Devices of Digital Circuits

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Right option is (c) Control bus

Explanation: The input and output are used to control the function of a microprocessor. Hence, the control bus is used to transfer the input and output signal from microprocessor to external peripherals and or from external peripherals to microprocessor.

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