Flip-Flops - General Questions (6)

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Flip-Flops - General Questions

41.

Does the cross-coupled NOR flip-flop have active-HIGH or active-LOW set and reset inputs?

A.	active-HIGH
B.	active-LOW

Answer: Option A

Explanation:

No answer description available for this question

42.

In a 555 timer, three 5 k omega (6) resistors provide a trigger level of ________.

A.	1/4 VCC and a threshold level 1/2 VCC
B.	1/3 VCC and a threshold level 3/4 VCC
C.	1/3 VCC and a threshold level 2/3 VCC
D.	1/4 VCC and a threshold level 2/3 VCC

Answer: Option C

Explanation:

No answer description available for this question.

43.

The symbols on this flip-flop device indicate ________.

mcq7_00300

A.	triggering takes place on the negative-going edge of the CLK pulse
B.	triggering takes place on the positive-going edge of the CLK pulse
C.	triggering can take place anytime during the HIGH level of the CLK waveform
D.	triggering can take place anytime during the LOW level of the CLK waveform

Answer: Option A

Explanation:

No answer description available for this question

44.

A D flip-flop utilizing a PGT clock is in the CLEAR state. Which of the following input actions will cause it to change states?

A.	CLK = NGT, D = 0
B.	CLK = PGT, D = 0
C.	CLOCK NGT, D = 1
D.	CLOCK PGT, D = 1
E.	CLK = NGT, D = 0, CLOCK NGT, D = 1

Answer: Option D

Explanation:

No answer description available for this question

45.

A 555 operating as a monostable multivibrator has a C₁ = 0.01 mu (4) F. Determine R₁ for a pulse width of 2 ms.

A.	200 k
B.	182 k
C.	91 k
D.	182

Answer: Option B

Explanation:

No answer description available for this question

46.

In VHDL, how many inputs will a primitive JK flip-flop have?

A.	2
B.	3
C.	4
D.	5

Answer: Option D

Explanation:

No answer description available for this question.

47.

If an active-HIGH S-R latch has a 0 on the S input and a 1 on the R input and then the R input goes to 0, the latch will be ________.

A.	SET
B.	RESET
C.	clear
D.	invalid

Answer: Option B

Explanation:

No answer description available for this question.

48.

What is the hold condition of a flip-flop?

A.	both S and R inputs activated
B.	no active S or R input
C.	only S is active
D.	only R is active

Answer: Option B

Explanation:

No answer description available for this question

Flip-Flops - General Questions (6)

Flip-Flops - General Questions

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