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How many RAM chips of size $(256K \times 1 \text{ bit})$ are required to build $1$M Byte memory?

  1. $8$
  2. $10$
  3. $24$
  4. $32$
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Similar question :  https://gateoverflow.in/1299/gate2009-7-isro2015-3

Number of RAM chips  $=$   $\frac{Total Size}{OneRAMSize}$

$\Rightarrow$   $\frac{2^{20}*8}{2^{8}*2^{10}}=\frac{2^{23}}{2^{18}}=2^{5}=32$

D is correct.

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option (d) iscorrect
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