불대수의 정리 ★ 논리합 x + 0 = x x + 1 = 1 x + x = x x + x̅ = 1 x + y = y + x x+ (y + z) = (x + y) + z x(y + z) = xy + xz x + xy = x (x+y) = x̅ ·ȳ ★ 논리곱 x · 0 = 0 x · 1 = x x · x = x x · x̅ = 0 x · y = y · x x(yz) = (xy)z (x + y)(z + w) = xz + xw + yz + yw x̅ + xy = x̅ + y x̅ + xȳ = x̅ + ȳ x + x̅y = x + y x + x̅ȳ = x + ȳ (x · y) = x̅ + ȳ 논리식 표현
