Digital Electronics - Counters

Exercise :: Counters - General Questions

73. 

What type of device is shown below?

A. 4-bit bidirectional universal shift register
B. Parallel in/parallel out shift register with bidirectional data flow
C. 2-way parallel in/serial out bidirectional register
D. 2-bit serial in/4-bit parallel out bidirectional shift register

Answer: Option A

Explanation:

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74. 

Why can a synchronous counter operate at a higher frequency than a ripple counter?

A. The flip-flops change one after the other.
B. The flip-flops change at the same time.
C. A synchronous counter cannot operate at higher frequencies.
D. A ripple counter is faster.

Answer: Option B

Explanation:

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75. 

A multiplexed display being driven by a logic circuit:

A. accepts data inputs from one line and passes this data to multiple output lines
B. accepts data inputs from several lines and allows one of them at a time to pass to the output
C. accepts data inputs from multiple lines and passes this data to multiple output lines
D. accepts data inputs from several lines and multiplexes this input data to four BCD lines

Answer: Option B

Explanation:

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76. 

What is meant by parallel load of a counter?

A. Each FF is loaded with data on a separate clock.
B. The counter is cleared.
C. All FFs are preset with data.

Answer: Option C

Explanation:

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77. 

Which of the following is an example of a counter with a truncated modulus?

A. 8
B. 13
C. 16
D. 32

Answer: Option B

Explanation:

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78. 

Which of the following is a type of shift register counter?

A. Decade
B. Binary
C. Ring
D. BCD

Answer: Option C

Explanation:

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