利用译码与数据选择器实现组合逻辑函数法

针对单一逻辑部件难以实现更多变量的逻辑函数问题,提出了一种译码器与数据选择器结合的组合逻辑函数实现方法,给出了组合逻辑函数实现的卡诺图和逻辑电路图,导出n位译码器与m位数据选择器结合实现变量个数为n m的任意组合逻辑函数的结果,得出利用中规模集成电路数据选择器与译码器组合实现逻辑设计是一种行之有效的方法。

Method to relize combinational logic function using combination of decoder and data selector

In view of the question that it is difficult to realize mulit-variable logic function using the sole logical unit,the paper proposes a kind of realizing method of the combinational logic function using the decoder and the data selector,and offers Karnaugh map and the logical circuit using the combinational logic function and produces the result that the combination of n bits decoder and m bits data selector realizes any combinational logic function of m n variable.The paper derives a kind of effective method to realize the logical design using the combination of the decoder and the data selector of the scale integrated circuit.