Counters - General Questions (2)

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Counters - General Questions

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:

No answer description available for this question

10.

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:

No answer description available for this question

11.

What type of device is shown below?

mcq7_1018_1

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:

No answer description available for this question

12.

The designation mcq8_01600 means that the ________.

A.	up count is active-HIGH, the down count is active-LOW
B.	up count is active-LOW, the down count is active-HIGH
C.	up and down counts are both active-LOW
D.	up and down counts are both active-HIGH

Answer: Option A

Explanation:

No answer description available for this question.

13.

The circuit given below fails to produce data output. The individual flip-flops are checked with a logic probe and pulser, and each checks OK. What could be causing the problem?

mcq7_1025_1

A.	The data output line may be grounded.
B.	One of the clock input lines may be open.
C.	One of the interconnect lines between two stages may have a solder bridge to ground.
D.	One of the flip-flops may have a solder bridge between its input and Vcc.

Answer: Option B

Explanation:

No answer description available for this question

14.

Which of the following groups of logic devices would be the minimum required for a MOD-64 synchronous counter?

A.	Five flip-flops, three AND gates
B.	Seven flip-flops, five AND gates
C.	Four flip-flops, ten AND gates
D.	Six flip-flops, four AND gates

Answer: Option D

Explanation:

No answer description available for this question

15.

Which segments (by letter) of a seven-segment display need to be active in order to display a digit 6?

A.	b, c, d, e, f, and g
B.	a, c, d, e, f, and g
C.	a, b, c, d, and f
D.	b, c, d, e, and f

Answer: Option C

Explanation:

No answer description available for this question.

16.

Which of the following statements are true?

A.	Asynchronous events do not occur at the same time.
B.	Asynchronous events are controlled by a clock.
C.	Synchronous events do not need a clock to control them.
D.	Only asynchronous events need a control clock.

Answer: Option A

Explanation:

No answer description available for this question

Counters - General Questions (2)

Counters - General Questions

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