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Digital Electronics
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Memory and Storage
Comments
Question
A 64-Mbyte SIMM is installed into a system, but when a memory test is executed, the SIMM is detected as a 32-Mbyte device. What is a possible cause?
Options
A. The memory module was not installed properly.
B. The voltage on the memory module is incorrect.
C. The most significant address line is stuck high or low.
D. The address decoder on the SIMM is faulty.
Correct Answer
The address decoder on the SIMM is faulty.
Memory and Storage problems
Search Results
1. For the given circuit, what memory location is being addressed?
Options
A. 10111
B. 249
C. 5
D. 157
Show Answer
Scratch Pad
Discuss
Correct Answer: 249
2. The location of a unit of data in a memory array is called its ________.
Options
A. storage
B. RAM
C. address
D. data
Show Answer
Scratch Pad
Discuss
Correct Answer: address
3. On a CD-ROM, ________ are raised areas representing a 1.
Options
A. mounds
B. lands
C. holes
D. pits
Show Answer
Scratch Pad
Discuss
Correct Answer: lands
4. Data is written to and read from the disk via a magnetic ________ head mechanism in the floppy drive.
Options
A. cylinder
B. read/write
C. recordable
D. cluster
Show Answer
Scratch Pad
Discuss
Correct Answer: read/write
5. What is the major difference between SRAM and DRAM?
Options
A. DRAMs must be periodically refreshed.
B. SRAMs can hold data via a static charge, even with power off.
C. The only difference is the terminal from which the data is removed?from the FET Drain or Source.
D. Dynamic RAMs are always active; static RAMs must reset between data read/write cycles.
Show Answer
Scratch Pad
Discuss
Correct Answer: DRAMs must be periodically refreshed.
6. Why are ROMs called nonvolatile memory?
Options
A. They lose memory when power is removed.
B. They do not lose memory when power is removed.
Show Answer
Scratch Pad
Discuss
Correct Answer: They do not lose memory when power is removed.
7. How many address bits are needed to select all memory locations in the 2118 16K × 1 RAM?
Options
A. 8
B. 10
C. 14
D. 16
Show Answer
Scratch Pad
Discuss
Correct Answer: 14
8. Eight bits of digital data are normally referred to as a:
Options
A. group.
B. byte.
C. word.
D. cell.
Show Answer
Scratch Pad
Discuss
Correct Answer: byte.
9. How many 1K × 4 RAM chips would be required to build a 1K × 8 memory system?
Options
A. 2
B. 4
C. 8
D. 16
Show Answer
Scratch Pad
Discuss
Correct Answer: 2
10. For the given circuit, which of the following is correct?
Options
A. The number 5 is being written to the memory at address location 203.
B. The chip has not been enabled, since the EN terminal is 0; therefore, nothing will be written to the chip and the output is tri-stated.
C. Decimal 10 is being written into memory location 211.
D. The read/write line is LOW; therefore, decimal 5 is being stored at memory location 211.
Show Answer
Scratch Pad
Discuss
Correct Answer: Decimal 10 is being written into memory location 211.
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