Boolean algebra

• What Is the Boolean Expression for a 3-Input XOR Gate?
  A 3-input XOR outputs 1 for odd-parity inputs. Its expression is A XOR B XOR C, or A'B'C + A'BC' + AB'C' + ABC.
• How Do Brackets Work in Boolean Algebra’s Distributive Laws?
  Learn how parentheses group Boolean expressions, when to distribute AND or OR, and how to simplify bracketed expressions without changing their value.
• What Does a 3-Input XOR Gate Do?
  A 3-input XOR outputs 1 when an odd number of inputs are high. See its truth table, Boolean expression, and two-gate implementation.
• How to Get a Simplified Sum of Products from a Truth Table
  Write the canonical SOP from the rows where the output is 1, then simplify with Boolean algebra or a Karnaugh map. Fully worked 3-variable example.