Aspire Faculty ID #19267 · Topic: UGC NET Computer Science June 2019 (Paper II) · Just now
UGC NET Computer Science June 2019 (Paper II)

A processor can support a maximum memory of $4GB$ where memory is word addressable and a word is $2$ bytes. What will be the size of the address bus of the processor?

Solution

Maximum memory supported is

$4GB=2^{32}$ bytes

One word is

$2$ bytes

Since memory is word addressable, number of addressable words is

$\dfrac{2^{32}}{2}=2^{31}$

So, number of address lines required is

$31$

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