8086 Numerical MCQs

Practice 8086 Numerical MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Microprocessors & Microcontrollers8086 Numerical

The 8086 has a 20-bit physical address bus. How many unique byte addresses can it represent?

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Correct Answer: D. 1048576

Explanation: A 20-bit address has 2^20=1,048,576 distinct combinations, corresponding to 1 MiB of byte-addressable space.

Reference: Standard microprocessors and microcontrollers: 8086 numerical

Question 2

Microprocessors & Microcontrollers8086 Numerical

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Correct Answer: C. BC004H

Explanation: Physical address = ABCDH×10H + 1234H = ABCD0H + 1234H = BC004H.

Reference: Standard microprocessors and microcontrollers: 8086 numerical