Computer Science - Computer Fundamentals - Discussion

5. 

An electronic logic gate whose output is logic 0 only when all inputs are logic 1 is

[A]. NOR
[B]. NAND
[C]. OR
[D]. NOT
[E]. None of the above

Answer: Option B

Explanation:

No answer description available for this question.

Suman Shrama Scobacs said: (Feb 14, 2012)  
NAND gate is a combinatioin of AND GATE + NOT GATE.
if both inputs is 1 then for AND gate Output is 1*1=1
and NOT of 1=0.

Abhimanyu said: (Jan 8, 2017)  
What about NOT gate?

Shewangizaw Bogale said: (Feb 26, 2017)  
OR gate : is a Boolean operator that gives the value 1 if at least one operand has a value of 1. Example : 1 OR 1 = 1 OR 0 = 0 OR 1 = 1 (one).

AND gate : is a Boolean operator that gives the value 1 if and only if all the operands are 1, and otherwise has a value of zero. 1 AND 1 = 1.

NOT gate : is a Boolean operator with only one variable that has the value one when the variable is zero and vice versa. 1 NOT = 0, 0 NOT = 1.

NOR gate : a Boolean operator that gives the value, only when all operands have a 0 value. Example : 0 NOR 0 = 1.

NAND gate : is a combination of the result of AND GATE, and then using a NOT gate. Example : 1 NAND 1 = 0.

Banjara said: (Aug 14, 2019)  
In NOR also the output will be 0, if both inputs are 1,
NOR = OR+NOT.

OR Gate:-
0-0 = 0
0-1 = 1
1-0 = 1
1-1 = 1

So, 1 NOR 1 = 0 also.

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