共查询到14条相似文献,搜索用时 52 毫秒
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确定非正常触发主从JK触发器次态的一种简单方法 总被引:1,自引:0,他引:1
通过对非正常触发时主从JK触发器可能出现的工作波形的详细分析,归纳出了非正常触发时确定主从JK触发器次态的简单方法。 相似文献
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本文首先分析双阶跃JK触发器完成的功能,推出它的特征方程,并设计其电路,然后用该触发器设计多阶跃时序电路。 相似文献
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提出了一种低功耗的绝热JK触发器电路。在绝热AERL(Approved Energy Recovery Logic)反相器电路的基础上,提出了AERL反相器级联及AERL JK触发器的实现方法。在0.5微米PTM工艺下用Spice工具对提出的电路进行了模拟仿真。结果显示与传统的CMOS JK触发器和ECRL JK触发器相比,AERL JK触发器具有更低的功耗。 相似文献
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根据JK触发器在每个时钟脉冲作用时间内,其状态只变化一次,而且不同引脚都可以使触发器状态发生改变的特性,给出了用JK触发器来设计抢答器的设计方法及仿真,同时给出了用74LS112JK触发器设计抢答器的最优设计方法及思路。 相似文献
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TTL JK边沿触发器在CP脉冲边沿会出现输出状态异变现象.本文分析了异变的原因,提出了对CP脉冲上升时间和下降时间的要求条件. 相似文献
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Meng Xu Qundao Xu Rongchuan Gu Songyou Wang Cai-Zhuang Wang Kai-Ming Ho Zhongrui Wang Ming Xu Xiangshui Miao 《Advanced functional materials》2023,33(45):2304926
Phase change memory (PCM) and ovonic threshold switching (OTS) materials using chalcogenide glass are essential elements in advanced 3D memory chips. The mid-gap states, induced by the disorder and defects in the glass, are the physical mechanisms of the electrical switching behavior, while the origin of these trap states is still under debate and the medium-range clusters that break the global octet rule, such as over-coordinated atoms, are known to be responsible in various glass. Here, it is discovered that a large fraction of over-coordinated clusters fails to generate mid-gap states, which are probably caused by hypervalent bonding, a multi-centered covalent bond participated by delocalized lone-pair electrons. This is confirmed by the pressure-driven simulations of amorphous GeSe models, in which it is found that octahedral motifs and hypervalent bonds prevent the over-coordinated medium-range clusters from providing excessive electrons. In practical applications, compatible dopants can be used to change the number of hypervalent bonds, thus controlling the number of mid-gap states and consequently the performance of PCM and OTS materials. These results reveal the origin of mid-gap states in chalcogenide glasses, enabling extensive control in the development of pioneering electrical switching materials. 相似文献
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电路板在电子产品中的应用非常广泛,其质量和稳定性直接决定产品的质量。印制电路板(PCB)是电子丝网印刷中的重要印刷内容。在PCB印刷中,油墨的主要性能(如油墨的黏度和触变性)直接影响着PCB的印刷质量和生产速度,因此,在印刷中要注意熟悉和调控油墨的黏度与触变性,保证PCB丝网印刷的质量。 相似文献