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Information and Communication Technology System Maintenance (ICTSM)
DIGITAL ELECTRONICS
Set 3
Set 3
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Q7037
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Which IC is used for (DEMUX) function in data transmission?
A
IC 7483
B
IC 7486
C
74 LS 138
D
74 LS 151
Q7038
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Which circuits requires the flip - flops for their operation?
A
Amplifier circuits
B
Oscillator circuits
C
Modulator circuits
D
Memory circuits
Q7039
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What is the use of flip - flop?
A
It stores energy
B
It stores voltage
C
It stores current
D
It stores binary information
Q7040
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What is the maximum possible number of flipflops in a decade counter?
A
1<sup>n</sup>
B
2<sup>n</sup>
C
2<sup>n+1</sup>
D
3<sup>n</sup>
Q7041
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What is the purpose of using IC74LS190?
A
Attenuator
B
Comparator
C
Up/down counter
D
Modulator
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