GATE CS 2016 Set 1 — Question 19
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Question
A processor can support a maximum memory of 4 GB, where the memory is word-addressable (a word consists of two bytes). The size of the address bus of the processor is at least ________ bits.
Correct answer
31 to 31
Solution
Given:
Maximum memory size = 4 GB = bytes = bytes.
Word size = 2 bytes.
The memory is word-addressable.Number of addressable words = words.To address distinct locations, the address bus width must satisfy .
Therefore, bits.
Maximum memory size = 4 GB = bytes = bytes.
Word size = 2 bytes.
The memory is word-addressable.Number of addressable words = words.To address distinct locations, the address bus width must satisfy .
Therefore, bits.
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