Exercise: Microprocessors

Questions for: Microprocessors

The power requirements of a DRAM in active and stand by modes is about
A:
350 mW and 5 mW respectively
B:
350 mW each
C:
5 mW each
D:
350 mW and 100 mW respectively
Answer: A

Power requirement in stand by mode is very low 1000.

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Z flag is reset if an ALU operation results in 0.
A:
True
B:
False
C:
D:
Answer: B

Z flag is set if ALU operation results in zero.

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During processing the instructions, data, intermediate results and final results in a computer are held in
A:
CPU
B:
ALU
C:
Primary memory
D:
Secondary memory
Answer: C

Primary memory holds these during processing of instructions.

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Which of the following computer memories is fastest?
A:
Cache
B:
Primary
C:
Mass storage
D:
Off line back up
Answer: A

Cache memory has a speed of about four times the speed of main memory. It is a small high speed memory.

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The size of cache memory in most microcomputers is about
A:
a few bytes
B:
a few kilobytes
C:
a few megabytes
D:
a few gigabytes
Answer: B

Size of Cache memory varies from about 16 K bytes to about 256 K bytes.

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