8051 Memory MCQs

Practice 8051 Memory MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Microprocessors & Microcontrollers8051 Memory

How many register banks are available in the classic 8051 internal RAM architecture?

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Correct Answer: B. 4

Explanation: The classic 8051 provides four banks, each containing registers R0 through R7.

Reference: Standard microprocessors and microcontrollers: 8051 memory

Question 2

Microprocessors & Microcontrollers8051 Memory

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Correct Answer: B. 8

Explanation: Each bank contains eight registers named R0-R7.

Reference: Standard microprocessors and microcontrollers: 8051 memory

Question 3

Microprocessors & Microcontrollers8051 Memory

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Correct Answer: C. 64 KB

Explanation: Using its 16-bit program-memory addressing mechanism, the 8051 architecture can address up to 64 KiB of external code memory.

Reference: Standard microprocessors and microcontrollers: 8051 memory