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Digital Electronics - Memory and Storage

Exercise : Memory and Storage - General Questions
16.

For the given circuit, which of the following is correct?

The number 5 is being written to the memory at address location 203.
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.
Decimal 10 is being written into memory location 211.
The read/write line is LOW; therefore, decimal 5 is being stored at memory location 211.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.

What is the significance of the inverted triangles on the outputs of the device in the given figure?

They represent inverters and mean that the outputs are active-LOW.
They represent buffers and mean that the outputs can drive 40 TTL loads, instead of the normal 10.
It means that the outputs will be active only if a change has occurred at that memory location since the last read/write cycle.
The outputs are tristated.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
What is the maximum time required before a dynamic RAM must be refreshed?
2 ms
4 ms
8 ms
10 ms
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Which of the following best describes random-access memory (RAM)?
a type of memory in which access time depends on memory location
a type of memory that can be written to only once but can be read from an infinite number of times
a type of memory in which access time is the same for each memory location
mass memory
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Why are ROMs called nonvolatile memory?
They lose memory when power is removed.
They do not lose memory when power is removed.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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