Digital Electronics - Combinational Logic Analysis - Discussion
Discussion Forum : Combinational Logic Analysis - General Questions (Q.No. 12)
12.
One positive pulse with tw = 75 µs is applied to one of the inputs of an exclusive-OR circuit. A second positive pulse with tw = 15 µs is applied to the other input beginning 20 µs after the leading edge of the first pulse. Which statement describes the output in relation to the inputs?
The exclusive-OR output is a 20 
s pulse followed by a 40 s pulse, with a separation of 15 s between the pulses.
s pulse followed by a 40 s pulse, with a separation of 15 s between the pulses.The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, with a separation of 40 s between the pulses.
s pulse followed by a 15 s pulse, with a separation of 40 s between the pulses.The exclusive-OR output is a 15 s pulse followed by a 40 s pulse.
s pulse followed by a 40 s pulse.*The exclusive-OR output is a 20 s pulse followed by a 15 s pulse, followed by a 40 s pulse.
s pulse followed by a 15 s pulse, followed by a 40 s pulse.Discussion:
8 comments Page 1 of 1.
Pravalli said:
7 years ago
Option D is correct. I agree with the given answer.
(1)
Sudheer said:
1 decade ago
What is the relation between pulse width of input and corresponding output of an xor gate ?
Dipendu Halder said:
1 decade ago
When both the input pulses are high or low X-OR output is low.but when one of the input is high and another is low or vice-verse output is high. In this problem for the first 20uS one input is high and another is low, so obviously out put is a high. for next 15uS both the input is high so output is low and for remaining 40uS(75-20-15) first input is still high and second one is low so output is high.
Mukkateja said:
1 decade ago
@Dipendu.
Your answer is correct but as per the options the first option is correct, I suppose. Let me know which is correct?
Your answer is correct but as per the options the first option is correct, I suppose. Let me know which is correct?
Viendong said:
1 decade ago
@Mukkateja: I agree with you. The first option is correct.
Ritikverma said:
7 years ago
Option A would be correct.
Pritam said:
5 years ago
I too agree, it's option A.
Arrearvelava said:
2 years ago
I too agree, The given answer is right.
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