基于三变量通用阈值逻辑门的OC展开函数查表设计  

OC expansion's tabular design based on three-variable universal-threshold-logic gates

作　　者：应时彦[1] 吴水兴 肖林荣[3] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310032 [2]嘉兴市计量检定测试所,浙江嘉兴314050 [3]嘉兴学院电子工程系,浙江嘉兴314001

出　　处：《浙江工业大学学报》2010年第1期41-45,共5页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(Y105124)

摘　　要：阈值函数和阈值逻辑门具有众多独特的优点,但基于阈值逻辑门的逻辑综合却较为复杂.除逻辑函数在与-或-非系统中的最小项展开以及在与-异或系统中的RM展开外,在或-同或系统中的OC展开是另一常用的规范展开.在介绍了逻辑函数OC展开及分类基础上,讨论了通用阈值逻辑门的设计方法.给出了基于逻辑函数OC展开的三变量函数P分类表、接线顺序表以及P分类代表函数的接线方案表.对于以OC展开式表示的任意三变量逻辑函数,提出了基于三变量通用阈值逻辑门的查表设计方法,并给出了若干设计实例.通过设计实例证明了此方法具有直观、简单等优点.Threshold functions and universal-threshold-logic gates have a lot of advantages, but the logic design utilizing universal-threshold-logic gates is much complicated. Based on the discussion of OC expansion and the classification of logical functions, the design of universal- threshold-logic gates is discussed, the P classification table of three-variable functions, input permutation table and input connection table of representative functions of P classification based on logical function OC are provided. A tabular design method for an arbitrary logic function with OC expansion based on three-variable design cases are given. It is shown that intuition and so on. universal-threshold-logic-gates is proposed and several this method has many advantages, such as simplicity.

关 键 词：函数分类 通用阈值逻辑门 查表设计 

分 类 号：TP17[自动化与计算机技术—控制理论与控制工程]