Nielit Scientist-B CS 22-07-2017

Question 30

If each address space represents one byte of storage space, how many address lines are needed to access RAM chips arranged in a 4 x 6 array, where each chip is 8K x 4 bits?

A	13
B	14
C	16
D	17

Computer-OrganizationMemory-Interfacing

Question 30 Explanation:

Size of each Ram chip = 8K x 4 bits = 2³ x 2¹⁰x 2² ⇒ 2¹⁵ bits = 2¹² bytes
Number of chips required = 6 x 4 = 24 = 5 bits
So, total number of bits required = 12 + 5 = 17 bits

Correct Answer: D

Question 30 Explanation:

Size of each Ram chip = 8K x 4 bits = 2³ x 2¹⁰x 2² ⇒ 2¹⁵ bits = 2¹² bytes
Number of chips required = 6 x 4 = 24 = 5 bits
So, total number of bits required = 12 + 5 = 17 bits

Krishna Chandra Yadav

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