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Digital Electronics - Shift Registers

Exercise : Shift Registers - General Questions
26.
What are the three output conditions of a three-state buffer?
HIGH, LOW, float
1, 0, float
both of the above
neither of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
The primary purpose of a three-state buffer is usually:
to provide isolation between the input device and the data bus
to provide the sink or source current required by any device connected to its output without loading down the output device
temporary data storage
to control data flow
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
What is the difference between a ring shift counter and a Johnson shift counter?
There is no difference.
A ring is faster.
The feedback is reversed.
The Johnson is faster.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
What is a recirculating register?
serial out connected to serial in
all Q outputs connected together
a register that can be used over again
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
When is it important to use a three-state buffer?
when two or more outputs are connected to the same input
when all outputs are normally HIGH
when all outputs are normally LOW
when two or more outputs are connected to two or more inputs
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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