Explain the principle of duality in boolean algebra. How it is useful
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Demorganization supports changing of the signs in the boolean expression. Hence, from a given boolean expression, we can obtain another boolean expression by replacing each plus sign with a dot and each dot sign with a plus, each 1 and 0 and each 0 and 1.
The variables must remain same during the process. The expression, so obtained, is known as dual expression of the given boolean expression and the process of conversion is termed as Principle of duality.
It can be used to make a new boolean expression from a given boolean expression without changing the result.
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