memory-and-storage digital-electronics question and answers -Page 10

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Memory and Storage problems

1. How many 8 k � 1 RAMs are required to achieve a memory with a word capacity of 8 k and a word length of eight bits?
Options
A. Eight
B. Four
C. Two
D. One

Correct Answer: Eight

2. Which is not a hard disk performance parameter?
Options
A. Seek time
B. Break time
C. Latency period
D. Access time

Correct Answer: Break time

3. Which is not a magnetic storage device?
Options
A. Magnetic disk
B. Magnetic tape
C. Magneto-optical disk
D. Optical disk

Correct Answer: Optical disk

4. Which is not part of a hard disk drive?
Options
A. Spindle
B. Platter
C. Read/write head
D. Valve

Correct Answer: Valve

5. How many address bits are required for a 4096-bit memory organized as a 512 � 8 memory?
Options
A. 2
B. 4
C. 8
D. 9

Correct Answer: 9

6. A burst refresh and a normal memory operation of a DRAM can be interspersed.
Options
A. True
B. False

Correct Answer: False

7. The address-decoding scheme for a 16K-byte EPROM memory system requires a 1-to-8-address decoder when 4K � 8 memory is used.
Options
A. True
B. False

Correct Answer: True

8. Main computer memory is usually DRAM because of its high density and low cost; cache memory is usually SRAM because of its high speed.
Options
A. True
B. False

Correct Answer: True

9. Testing and troubleshooting the decoding logic will not reveal problems with the memory chips and their connections to the CPU busses.
Options
A. True
B. False

Correct Answer: True

10. Fusible-link PROMs are programmed by removing the desired fuse links using a microscope and tweezers.
Options
A. True
B. False

Correct Answer: False

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