Exercise: Digital Electronics

Questions for: Digital Electronics

Which one of the following can be used as parallel to series converter?
A:
Decoder
B:
Digital counter
C:
Multiplexer
D:
Demultiplexer
Answer: C

It converts parallel data into serial data.

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A 16:1 multiplexer has 4 select input lines.
A:
True
B:
False
C:
D:
Answer: A

24 = 16.

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Binary number 1101101101 is equal to decimal number
A:
3289
B:
2289
C:
1289
D:
289
Answer: A

2048 + 1024 + 128 + 64 + 16 + 8 + 1 = 3289 in decimal.

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A DAC has full scale output of 5 V. If accuracy is ± 0.2% the maximum error for an output of 1 V is
A:
5 mV
B:
10 mV
C:
2 mV
D:
20 mV
Answer: B

Maximum error = = 10 mV.

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For AB + A C + BC = AB + A C the dual form is
A:
(A + B) (A + C)(B + C) = (A + B)(A + C)
B:
(A + B ) (A + C)(B + C) = (A + B)(A + C)
C:
(A + B) (A + C) (B + C) = (A + B) (A + C)
D:
none of the above
Answer: A

Change OR to AND and vice versa.

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