Question

What do you mean by canonical form of a Boolean expression? Which of the following are canonical?

(i)  ab + bc

(ii)  abc + a’bc’+ ab’c’

(iii)  (a + b)(a’ +b’)

(iv)  (a + b + c)(a + b’+ c)(a’ + b +c’)

(v)  ab + bc + ca

Answer 1

Boolean Expression composed entirely either of Minterms or maxterms is referred to as canonical form of a Boolean expression.

(i) Non canonical

(ii) canonical

(iii) canonical

(iv) canonical

(v) Non canonical