What does a Quad in a K-map represent?

Correct option is C

In a Karnaugh Map (K-map), a Quad refers to a group of four adjacent 1s (minterms). Each group in a K-map represents a product term (ANDed variables) in simplified Boolean algebra. These product terms are then ORed together to form the simplified expression — hence each Quad contributes one product term to the final expression.

Important Key Points:

1. A Quad contains 4 adjacent cells with value 1, representing 4 minterms.
2. Each Quad corresponds to a single simplified product term in the final Boolean expression.
3. Grouping in powers of 2 (1, 2, 4, 8, etc.) helps eliminate variables and simplify the logic.

Knowledge Booster:

• Difference: A mathematical operation that represents subtraction, not used in K-map simplification.
• Sum: In Boolean algebra, the final expression is a sum of products, but individual groups (like Quads) represent product terms, not the sum.
• Don’t care: These are special entries in a K-map marked as X or –, used optionally in groupings to aid simplification — they are not themselves group types like Quad.