Digital Electronics - Logic Gates - Discussion
Discussion Forum : Logic Gates - General Questions (Q.No. 6)
6.
The output of an OR gate with three inputs, A, B, and C, is LOW when ________.
Discussion:
12 comments Page 1 of 2.
Bhavani said:
1 decade ago
Because OR gate only low value in one only
Akshay Topre said:
1 decade ago
Bcoz OR gate performs addition between two variables.
If we want low output, then all variables values should be low, if any one of d value becomes high, then the output of OR gate will be high.
If we want low output, then all variables values should be low, if any one of d value becomes high, then the output of OR gate will be high.
ANSHUMAN said:
1 decade ago
Output of OR gate is sum of inputs so.
When the inputs are 0, 0 and 0 than output is also ZERO.
When the inputs are 0, 0 and 0 than output is also ZERO.
Varun pathania said:
1 decade ago
Its answer is option a not d because in or gate if any input is one than output is also one.
Manish Kumar said:
1 decade ago
Bcoz in OR GATE addition is performed between two variables. A/q to queston output is low. In OR GATE output is low in one condition when all inputs are low. Y=A+B+C when the inputs are 0 then output will be 0.
Manish Kumar said:
1 decade ago
Because in OR GATE addition is performed between two variables. A/q to queston output is low. In OR GATE output is low in one condition when all inputs are low. Y=A+B+C when the inputs are 0 then output will be 0.
Sathish said:
1 decade ago
Here give low value only for OR gate so, output is low, As per OR Gate Truth table.
MOHAMMAD said:
1 decade ago
A B C OUTPUT(A+B+C) TRUTH TABLE.
-- -- -- ------------
0 0 0 0
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 1
-- -- -- ------------
0 0 0 0
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 1
Siva said:
7 years ago
Because OR gate only low value in one only.
Siva said:
7 years ago
A B C OUTPUT(A+B+C) TRUTH TABLE.
-- -- -- ------------
0 0 0 0
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 1
-- -- -- ------------
0 0 0 0
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 1
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