What is the name of the canonical form of a Boolean function expressed as a sum of minterms?

• A. Sum of Minterms
• B. Sum of Products
• C. Product of Sums
• D. Canonical Form

Answer: (A)

Expressing a Boolean function as a sum of minterms is called the Sum of Minterms. In this form, you create a minterm for every input pattern that makes the function true; each minterm is an AND of all variables, with each variable either complemented or not, chosen to match that specific pattern. Then you OR all those minterms together. Because every term includes all variables, this representation is canonical. It’s the canonical version of a sum-of-products form. In contrast, a general Sum of Products may skip some variables in terms, and a Product of Sums uses maxterms instead of minterms. So the exact name for the canonical form expressed as a sum of minterms is Sum of Minterms.