Digital Logic

Combinational Circuits Logic functions & Minimization Number representation and computer arithmetic Sequential Circuits

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Digital Logic - Sequential Circuits

11: The ring counter is analogous to

A.	Toggle switch
B.	Latch
C.	Stepping switch
D.	J-K flip-flop
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	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

12: In a digital counter circuit feedback loop is introduced to

A.	Improve distortion
B.	Improve stability
C.	Reduce the number of input pulses to reset the counter
D.	Asynchronous input and output pulses
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	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

13: A J-K lip-lop has its J-input connected to logic level 1 and its input to the Q output pulse is fed to its clock input the flip-flop will now

A.	Change its state at each clock pulse
B.	Go to state 1 and stay there
C.	Go to state 0 and stay there
D.	Retain its present state
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	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

14:

Which of the following conditions must be met to avoid race around problem ?

A.	Δ t < t_p < T
B.	T > Δt > t_p
C.	2 t_p < Δt < T
D.	None of these
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	Option: B Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

15:

Match List I with List II and select the correct answer form the codes given below the list

List I

A. A shift register can be
B. A multiplexer
C. A decoder can

List II
1.for parallel to serial conversion
2.to generate memory can be used chip select
3.for parallel to serial conversion

CODES:
A B C

A.	3 1 2
B.	2 3 1
C.	1 3 2
D.	1 2 3
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	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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