多输出组合逻辑函数共卡诺图化简法的研究

针对多输出逻辑函数，建立了一种规范化的共卡诺图化简沦。该化简法要求用一张卡诺图表示多输出逻辑函数，使得它们的共享部分在几何上相互重叠，为辨识共类共享最小项和合并提供了方便。以实例说明了共卡诺图化简法的应用，展示了该方法化简多输出逻辑函数简洁明快的特色。

Study of a Simplification Method Using the Karnaugh Map for Multi-Output Combinational Logic Functions

A systematic method using the Karnaugh map to simplify multi-output combinational logic functions is introduced. Multi-output combinational logic functions are located on the Karnaugh map and the common parts of each function overlap on this map, which makes it easier to find congener common miniterms and merge them. This method is based not only on the intuition and objectivity of the Karnaugh map but also on the mature rules of single-output functions. The basic standards of multi-output logic functions are introduced and concepts such as common minterm, congener common minterm, non-common minterm, common loop, the Karnaugh map are defined. The seven steps of the simplification methods are detailed. Three applications are presented to prove that this method is quick and accurate.