逻辑状态表 A B F 0000 001100 01010101 000101 F=∑m(3,5,6,7A B C F 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 1 1 1 1 0 1 1 1 1 1 逻辑状态表 F＝∑m(3,5,6,7)