F'=(AB)'(BC)'(C'+D')=(AB)'(BC)'(CD)'F=AB+BC+CD三项分别对应二进制数:11XX, 1XX1, XX11 x为1或0即1100,1101,1110,11111001,1011,1101,11110011,0111,1011,1111转成10制数:12,13,14,159,11,13,153,7,13,15所以:F=∑m(3,7,9,11,12,13,14,15)