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Digital Electronics - Engineering

Q1:

The access time of a word in 4 MB main memory is 100 ms. The access time of a word in a 32 kb data cache memory is 10 ns. The average data cache bit ratio is 0.95. The efficiency of memory access time is

A 9.5 ns

B 14.5 ns

C 20 ns

D 95 ns

ANS:B - 14.5 ns

Access time = 0.95 x 10 + 0.05 x 100.