2. How many bits of the MAR must be sent to the row decoder? To the column decoder? 3. Why is it unlikely that the size of the MDR register would be 8 bits? 4. If the average access time of this memory is 25 nsec and the average access time for cache memory is 10 nsec, what is the overall average access time if our cache hit rate is 80%? 5. What would happen to the overall average access time from Practice Problem 4 if we could somehow increase the cache hit rate to 90%? 6. In the previous problem, what would the cache hit rate have to be to reduce the average access time to 12.0 nsec? 7. If our memory stores signed integers using a two’s complement representation and 8 bytes, what is the largest positive value that can be represented? The largest negative value? 8. Do you think that human memory is or is not a random access memory? Give an argument why or why not.

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2 Because there are 210 1024 row lines and 210 1024 column lines we would need to send 10 of the 20 ... View the full answer