Question

What is NOT operator? Show its truth table and logical gate.

Hint:

NOT gate is the simplest logic gate because it has only one input and produces the opposite output.

Answer 1

Step 1: Define NOT operator.
 
The NOT operator is a logical operator that reverses the value of a Boolean variable.

If the input value is true (1), the output becomes false (0), and if the input is false (0), the output becomes true (1).

It is also called a logical inverter.

Step 2: Truth table of NOT operator.

 

A	NOT A
0	1
1	0

Step 3: Logical gate representation.

The NOT gate has one input and one output. The output is always the complement of the input.

Symbolically it is represented as an inverter triangle followed by a small circle at the output.

Step 4: Conclusion.

Thus the NOT operator changes the Boolean value of a variable and is represented by the NOT gate in digital logic circuits.