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本文介绍一种对变量进行逻辑运算的参量逻辑运算图,它是在一般逻辑运算图(即卡诺图)的图形中参加入变量而构成的一种特殊的逻辑运算图。采用参量逻辑运算图对变量进行逻辑运算时,在运算图尺寸(指运算图方格数)相同的条件下可以增加运算变量,从而为多变量的图解运算提供了一条方便的途径。此外,采用参量逻辑运算图配合时序流程图,还可以建立一种时序线路的综合的新方法,即时序流程图法,这种新的时序线路综合法,较一般常用的经典的哈夫门时序线路综合法更为直观和简便。本文首先阐述了参量逻辑运算图的结构原理、运算方法及变换规则,最后通过实例阐明参量逻辑运算图在多变量组合电路的简化及时序电路的综合等方的应用。
This paper introduces a parametric logic operation diagram of logic operation of variables, which is a special logic operation diagram formed by adding variables into the graph of general logic operation (ie, Canu`tu). When the logic operation of the variable is performed by using the parameter logic operation graph, the operation variable can be increased under the same operation size (the square of the operation graph), thereby providing a convenient way for the multivariate graph operation. In addition, the use of parametric logic diagram with sequential flow chart, you can also establish a new integrated circuit time sequence method, that is, sequential flow chart method, the new synthesis method of timing sequence, compared with the commonly used classical Huffman timing Line synthesis method is more intuitive and easy. In this paper, firstly, the structure principle, operation method and transformation rules of parametric logic operation graph are expounded. Finally, the application of parametric logic operation graph in the simplification of multivariable combination circuit and synthesis of sequential circuit are illustrated by examples.