基于b_j图计算逻辑函数布尔差分的新方法

New method of calculation Boolean difference based on b_j map.

分析了逻辑函数在部分变量取反时的bj图和降维bj图,在此基础上提出了用bj图和降维bj图计算逻辑函数的一阶布尔差分和二阶布尔差分的图形方法.实例表明,该图形方法有直观、简单等特点.它能给出逻辑函数布尔差分的最简与/异或式.

This paper analyses the b_j map and reduced-dimension b_j map of a logic function with partial variables negated, based on which, a graphic method of calculating first-order and second-order Boolean difference of a logic function by using b_j map and reduced-dimension b_j map is proposed. The examples prove that this method has the features of intuition and simplicity, by which the simplest AND/XOR expression of Boolean difference can be obtained.