How many 128×8 bit RAMs are required to design 32 k x 32 bit RAM? - (i — PYQDeck

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Module 2: x86 Architecture, CPU Control, I/O, Memory System Design

20192m

How many 128×8 bit RAMs are required to design 32 k x 32 bit RAM?

(i) 512
(ii) 128
(iii) 1024
(iv) 32

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Also appeared in 2023.

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Answer: (iii) 1024

Calculation:
Required: $32K \times 32$ bit. Chip: $128 \times 8$ bit.

Depth factor: $32K/128 = 32768/128 = 256$
Width factor: $32/8 = 4$
Total = $256 \times 4 = 1024$ chips.

Same as Q181.

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