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Boolean Expression

It is a logical expression that produces a  Boolean value when evaluated.

  • For a logic system having 'n' input binary values, there can be 2 n possible input combinations.
  • Tautology - It is an expression that is always true.
  • Fallacy - It is an expression that always yields a 0 or false.

While evaluating Boolean expression the order of evaluation of logical operators is

  • Parentheses is evaluated first. 
  • NOT 
  • AND 
  • OR 

Dual of a Boolean Expression

The Dual of a Boolean Expression is obtained by interchanging logical AND operator with logical OR operator and interchanging zeroes with one and vice versa.

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.