Electronics and Communication Engineering - Digital Electronics

41. 

Assertion (A): In hybrid digital circuits the problem of logic race can occur.

Reason (R): In two level logic there is no problem of logic race.

A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is true, R is false
D. A is false, R is true

Answer: Option B

Explanation:

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42. 

What is the memory word size of 8085 μp?

A. 6 bits
B. 8 bits
C. 12 bits
D. 16 bits

Answer: Option B

Explanation:

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43. 

The characteristic equation of an SR flip-flop in given by

A. Qn+1 = S + RQn
B. Qn+1 = RQn + SQn
C. Qn+1 = S + RQn
D. Qn+1 = S + RQn

Answer: Option D

Explanation:

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44. 

Binary number 101101 when converted to its 2's complement will become

A. 0101.01
B. 0100.10
C. 0100.10
D. 0101.10

Answer: Option B

Explanation:

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45. 

Assertion (A): In a BCD to 7 segment decoder the number of outputs active at one time is always the same.

Reason (R): A decoder can be used to interface BCD input to LED display.

A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is true, R is false
D. A is false, R is true

Answer: Option D

Explanation:

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