Flip-Flops - General Questions (5)

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Flip-Flops - General Questions

33.

Edge-triggered flip-flops must have:

A.	very fast response times
B.	at least two inputs to handle rising and falling edges
C.	positive edge-detection circuits
D.	negative edge-detection circuits

Answer: Option C

Explanation:

No answer description available for this question

34.

An RC circuit used in a 74122 retriggerable one-shot has an R_EXT of 100 k omega (6) and a C_EXT of 0.005 mu (4) F. The pulse width is ________.

A.	70 s
B.	16 s
C.	160 s
D.	32 s

Answer: Option C

Explanation:

No answer description available for this question

35.

Which of the following is not generally associated with flip-flops?

A.	Hold time
B.	Propagation delay time
C.	Interval time
D.	Set up time

Answer: Option C

Explanation:

No answer description available for this questio

36.

Gated S-R flip-flops are called asynchronous because the output responds immediately to input changes.

A.	True
B.	False

Answer: Option B

Explanation:

No answer description available for this question

37.

Why are the S and R inputs of a gated flip-flop said to be synchronous?

A.	They must occur with the gate.
B.	They occur independent of the gate.

Answer: Option A

Explanation:

No answer description available for this question

38.

What is the significance of the J and K terminals on the J-K flip-flop?

A.	There is no known significance in their designations.
B.	The J represents "jump," which is how the Q output reacts whenever the clock goes high and the J input is also HIGH.
C.	The letters were chosen in honor of Jack Kilby, the inventory of the integrated circuit.
D.	All of the other letters of the alphabet are already in use.

Answer: Option C

Explanation:

No answer description available for this question

39.

With four J-K flip-flops wired as an asynchronous counter, the first output change of divider #4 indicates a count of how many input clock pulses?

A.	16
B.	8
C.	4
D.	2

Answer: Option B

Explanation:

No answer description available for this question.

40.

The circuit that is primarily responsible for certain flip-flops to be designated as edge-triggered is the:

A.	edge-detection circuit.
B.	NOR latch.
C.	NAND latch.
D.	pulse-steering circuit.

Answer: Option A

Explanation:

No answer description available for this question

Flip-Flops - General Questions (5)

Flip-Flops - General Questions

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