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Module 1: Fundamentals of Microprocessors

20252m

Which of the following is the brain of a microcomputer system?

(i) RAM
(ii) Microprocessor
(iii) ROM
(iv) ALU

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Answer: (ii) Microprocessor

Explanation: The microprocessor is called the brain of a microcomputer system. It is the central processing unit (CPU) on a single chip that performs fetch-decode-execute cycles, ALU operations, control, and timing for the entire system. RAM/ROM are memories and ALU is only a part of the microprocessor. Therefore the microprocessor is the brain.

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