Electronics and Communication Engineering - Digital Electronics

26. 

Multiplexer can be used as logic function generator.

A. True
B. False

Answer: Option A

Explanation:

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27. 

74HCT00 series is

A. NAND IC
B. interface between TTL and CMOS
C. inverting IC
D. NOR IC

Answer: Option B

Explanation:

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28. 

The output of a full adder is

A. SUM
B. CARRY
C. SUM and CARRY
D. none of the above

Answer: Option B

Explanation:

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29. 

Number of cards read per minute by a card reader may be of the order of

A. 20
B. 1
C. 10000
D. 300

Answer: Option D

Explanation:

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30. 

The open collector gates in the given figure are tied together. The output Y =

A. A + B + C + D
B. A + B + C + D
C. (A + B) (C + D)
D. AB + CD

Answer: Option A

Explanation:

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