$H o w m a n y 32 K \times 1 R A M c h i p s a r e n e e d e d$
$t o p r o v i d e a m e m o r y c a p a c i t y o f 256 K - b y t e s ?$

128

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32

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8

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64

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Solution

The correct option is D $64$
$B a s i c R A M = 32 K \times 1$
$D e s i g n R A M = 256 K \times 8$

$N o . o f R A M = \frac{256 K \times 8}{32 K \times 1}$

$= \frac{2^{18} \times 2^{3}}{2^{15} \times 2^{0}} = 64$

$I t r e q u i r e 8 p a r a l l e l l i n e a n d i n e a c h$
$p a r a l l e l l i n e 8 s e r i a l R A M c h i p a r e r e q u i r e d .$

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