Exercise: Digital Electronics

Questions for: Digital Electronics

The following switching functions are to be implemented using a decoder
  1. f1 = ∑m (1, 2, 4, 8, 10, 14)
  2. f2 = ∑m (2, 5, 9, 15)
  3. f3 = ∑m (2, 4, 5, 6, 7)
The minimum configuration of decoder is
A:
2 to 4 line
B:
3 to 8 line
C:
4 to 16 line
D:
5 to 32 line
Answer: C
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Minimum number of J-K flip-flop needed to construct a BCD counter is
A:
2
B:
3
C:
4
D:
5
Answer: C
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What is output 'Z' of an EX-OR gate, whose all inputs are set at A?
A:
Z = A
B:
Z = 1
C:
Z = 0
D:
Z = A
Answer: C
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Decimal number 5436 when converted into 9's complement will become
A:
4356
B:
4653
C:
4563
D:
4655
Answer: C
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As compared to TTL, CMOS logic has
A:
higher speed of operation
B:
higher power dissipation
C:
smaller physical size
D:
all of the above
Answer: C
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