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Digital Electronics
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Digital Concepts
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Question
What is one relative disadvantage of serial transfer?
Options
A. It requires too many conductors.
B. Its interconnect system is complex.
C. It is slow.
D. It can only be used over very short distances.
Correct Answer
It is slow.
Digital Concepts problems
Search Results
1. Which format requires fewer conductors?
Options
A. Parallel
B. Serial
C. Both are the same
D. Cannot tell
Show Answer
Scratch Pad
Discuss
Correct Answer: Serial
2. Parallel format means that:
Options
A. each digital signal has its own conductor.
B. several digital signals are sent on each conductor.
C. both binary and hexadecimal can be used.
D. no clock is needed.
Show Answer
Scratch Pad
Discuss
Correct Answer: each digital signal has its own conductor.
3. A multiplexer has ________.
Options
A. one input and several outputs
B. one input and one output
C. several inputs and several outputs
D. several inputs and one output
Show Answer
Scratch Pad
Discuss
Correct Answer: several inputs and one output
4. The generic array logic (GAL) device is ________.
Options
A. one-time programmable
B. reprogrammable
C. a CMOS device
D. reprogrammable and a CMOS device
Show Answer
Scratch Pad
Discuss
Correct Answer: reprogrammable
5. What kind of logic device or circuit is used to store information?
Options
A. Counter
B. Register
C. Inverter
D. Buffer
Show Answer
Scratch Pad
Discuss
Correct Answer: Register
6. The output of a NOT gate is HIGH when ________.
Options
A. the input is LOW
B. the input is HIGH
C. the input changes from LOW to HIGH
D. voltage is removed from the gate
Show Answer
Scratch Pad
Discuss
Correct Answer: the input is LOW
7. A pulse has a period of 15 ms. Its frequency is ________.
Options
A. 6.66 Hz
B. 66.66 Hz
C. 666.66 Hz
D. 15 Hz
Show Answer
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Discuss
Correct Answer: 66.66 Hz
8. Digital representations of numerical values of quantities may BEST be described as having characteristics:
Options
A. that are difficult to interpret because they are continuously changing.
B. that vary constantly over a continuous range of values.
C. that vary in constant and direct proportion to the values they represent.
D. that vary in discrete steps in proportion to the values they represent.
Show Answer
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Discuss
Correct Answer: that vary in discrete steps in proportion to the values they represent.
9. Which format can send several bits of information faster?
Options
A. Parallel
B. Serial
C. Both are the same
D. Cannot tell
Show Answer
Scratch Pad
Discuss
Correct Answer: Parallel
10. In positive logic, ________.
Options
A. a HIGH = 1, a LOW = 0
B. a LOW = 1, a HIGH = 0
C. only HIGHs are present
D. only LOWs are present
Show Answer
Scratch Pad
Discuss
Correct Answer: a HIGH = 1, a LOW = 0
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