Electronics and Communication Engineering - Electronic Devices and Circuits

16.

Assertion (A): Demorgan's first theorem replaces a NOR gate by bubbled AND gate.

Reason (R): Double complement of a variable equals the variable.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.

17.
A flip-flop circuit is
monostable
bistable
multistable
unstable
Answer: Option
Explanation:
No answer description is available. Let's discuss.

18.

Assertion (A): The use of 2's complement has simplified the computer hardware for arithmetic operations

Reason (R): 2's complement is obtained by adding 1 to 1's complement.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.

19.
How many lines are there in address bus of 8085 μp?
6
8
12
16
Answer: Option
Explanation:
No answer description is available. Let's discuss.

20.
Consider the following statements Timer 555 can be used as
  1. monostable multivibrator
  2. bistable multivibrator
  3. astable multivibrator
Which of the above statements are correct?
1 and 2
1 and 3
2 and 3
1, 2, 3
Answer: Option
Explanation:
No answer description is available. Let's discuss.