Electronics and Communication Engineering - Digital Electronics

36. 

NAND and NOR gates are universal gates.

A. True
B. False

Answer: Option A

Explanation:

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37. 

The control logic for a binary multiplier is specified by a states diagram. The state diagram has four states and two inputs. To implement it by the sequence register and decoder method.

A. two flip-flop & 2 x 4 decoder are needed
B. four flip-flop & 2 x 4 decoder are needed
C. two flip-flop & 3 x 9 decoder are needed
D. four flip-flop & 3 x 9 decoder are needed

Answer: Option A

Explanation:

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38. 

A hexadecimal odometer displays F52F. The next reading will be

A. E 52 F
B. E 52 E
C. E 53 F
D. F 53 O

Answer: Option D

Explanation:

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39. 

Which of them has 10 inputs and 4 outputs?

A. Decimal to BCD encoder
B. BCD to decimal decoder
C. Octal to binary encoder
D. All encoders

Answer: Option A

Explanation:

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40. 

The binary number 0.10110111101 is equal to hexadecimal number

A. B3A
B. B5A
C. B7A
D. BA7

Answer: Option C

Explanation:

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