Digital Electronics - Logic Gates - Discussion
Discussion Forum : Logic Gates - General Questions (Q.No. 1)
1.
The output of an AND gate with three inputs, A, B, and C, is HIGH when ________.
Discussion:
51 comments Page 1 of 6.
Jagan said:
1 decade ago
Output of an And gate is high when all inputs are high or 1.
SURAJ K S said:
1 decade ago
A*B=1*1=1
C*A*B=1*1=1
C*A*B=1*1=1
Akshay Topre said:
1 decade ago
If A=0 & B=0
then A*B=0*0=0 (since AND gate performs multiplication)
If A=1 & B=0
then also A*B=1*0=0.
If A=0 & B=1
then also A*B=0*1=0.
If A=1 & B=1
then only A*B=1*1=1.
then A*B=0*0=0 (since AND gate performs multiplication)
If A=1 & B=0
then also A*B=1*0=0.
If A=0 & B=1
then also A*B=0*1=0.
If A=1 & B=1
then only A*B=1*1=1.
N.SHIRISH said:
1 decade ago
Output of an AND gate is high when all inputs are high a=1, b=1, c=1.
Output of AND gate is = A*B*C = 1*1*1 = 1.
Output of AND gate is = A*B*C = 1*1*1 = 1.
Purushothaman R said:
1 decade ago
simple logic for xor ...
suppose A xor B = AB'+BA'
That is if both A and B Value is same then result is same
suppose A xor B = AB'+BA'
That is if both A and B Value is same then result is same
Syed asif said:
1 decade ago
Yes above said by all is correct.
Aaaa said:
1 decade ago
For the output of and gate to be high we need all 1 because by the combination of any 0 in case of and we get a 0 that is low output.
Premalatha said:
1 decade ago
AND Gate is enable only when their all inputs are high.
Sathi.repala@gmail.com said:
1 decade ago
Only if all the inputs are high then only the and gate output is high.
Kailash said:
1 decade ago
In AND gate Y=A*B.
When A=HIGH & B=HIGH then the output Y=HIGH.
When A=HIGH & B=HIGH then the output Y=HIGH.
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