ISRO | ISRO CS 2017 – May | Question 18

How many 128 × 8 bit RAMs are required to design 32 K × 32 bit RAM?
(A) 512
(B) 1024
(C) 128
(D) 32

Answer: (B)
Explanation: We need 32 K x 32 bits, i.e., 32 x 1024 x 32 bits.
We have RAM chips of capacity 128 x 8 bits
(32 * 1024 *32)/(128 * 8) = 1024
So, option (B) is correct.
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