1) Suppose you have a circuit that consists of 6 AND gatesm 14 OR gates, and 13

Question

1) Suppose you have a circuit that consists of 6 AND gatesm 14 OR gates, and 13 NOT gates. How many transmitters are being used?

a)33

b)53

c)63

d)73

e)83

2)A certain microprocessor has 32kB cache with an access time of 4ns (a nanosecond is 10^-9 seconds) and an average hit rate of 75%. The main memory is 256MB and the access time in 8ns. Which of the following would provide the greatest improvement to the average memory access time?

a)Reduce main memory access time to 7ns.

b)increase the size of main memory to 512MB

c)reduce the cache access to 3ns

d)improve the cache hit rate to 80%

3)Suppose a machine language uses op codes that are 7 bits long. What is the maximum number f distinct instructions this language could have?

a)7

b)14

c)49

d)128

e)256

Explanation / Answer

1 C

2 B

3 C

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