| 改进溢出判断电路的设计与仿真研究 |
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| 引用本文： | 王颖,王瑞春. 改进溢出判断电路的设计与仿真研究[J]. 电子技术应用, 2012, 38(5): 49-51,55 |
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| 作者姓名： | 王颖 王瑞春 |
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| 作者单位： | 1. 深圳信息职业技术学院电子与信息学院,广东深圳,518055
2. 深圳信息职业技术学院基础部,广东深圳,518055 |
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| 摘 要： | 传统数字芯片电路中,固定字长有符号数的加法或减法运算的溢出判断需要等到加法/减法运算结束之后才能进行。以四位有符号数加法/减法运算溢出判断逻辑为例提出一种改进的设计方式,能够在加法/减法运算结束之前对操作数进行判断,从而决定是否有溢出现象的发生。仿真发现,改进后的电路无论在规模上还是在运算速度上都有很大改善。
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| 关 键 词： | 改进 溢出判断 电路设计 仿真 |
Research on design and simulation of an improved overflow judgment circuit |
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| Wang Ying , Wang Ruichun. Research on design and simulation of an improved overflow judgment circuit[J]. Application of Electronic Technique, 2012, 38(5): 49-51,55 |
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| Authors: | Wang Ying Wang Ruichun |
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| Affiliation: | 1.School of Electronic and Telecom Technology,Shenzhen Institute of Information Technology,Shenzhen 518055,China; 2.Department of Basic Research,Shenzhen Institute of Information Technology,Shenzhen 518055,China) |
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| Abstract: | In the typical overflow judgment circuit,the existence of overflow can not be judged until the operation is end.In this paper,an improved design is put forward.The improved design is based on the addition or subtraction of four-bit signed data.This improved circuit can judge the existence of overflow by view the operator before the end of the operation.The improved circuit is found better in the scale and delay time by simulation. |
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| Keywords: | improvement over-flow judgment circuit design simulation |
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