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Digital Electronics - Digital Concepts

Exercise : Digital Concepts - General Questions
16.
Which of the following is not an analog device?
Thermocouple
Current flow in a circuit
Light switch
Audio microphone
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
A demultiplexer has ________.
one data input and a number of selection inputs, and they have several outputs
one input and one output
several inputs and several outputs
several inputs and one output
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A flip-flop has ________.
one stable state
no stable states
two stable states
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Digital signals transmitted on a single conductor (and a ground) must be transmitted in:
slow speed.
parallel.
analog.
serial.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
In a certain digital waveform, the period is four times the pulse width. The duty cycle is ________.
0%
25%
50%
100%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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