IndiaBIX

Electronics and Communication Engineering - Digital Electronics

Exercise : Digital Electronics - Section 23
1.

Assertion (A): The TTL output acts as a current sink in low state

Reason (R): The TTL input current is largest in low state.

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.
2.
The number of LED display indicators in logic probe are
1
2
1 or 2
4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The time needed by a TTL circuit to switch from 0 to 1 or 1 to 0 is about
10 μs
10 ns
100 μs
50 ns
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.

Assertion (A): R-2R ladder type DAC has higher speed of operation than weighted resistor DAC

Reason (R): R-2R ladder type DAC uses only two different values of resistor network uses many different values of resistors

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.
5.
Which of the following circuits can be used as parallel-to-series converter?
Digital counter
Decoder
Demultiplexer
Multiplexer
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers