触发器

On the leading edge of the next clock pulse, the contents of the first flip-flop is stored in the second flip-flop, and the signal which is present at the DATA input is stored in the first flip-flop, etc.

在下一个时钟脉冲的前沿，第一个触发器的内容被存放到第二个触发器中，而在数据输入端的信号则存放在第一个触发器中，依此类推。

Based on analysis of traditional static and dynamic Double Edge-Triggered Flip-Flops, a new semi-static DETFF is proposed in this paper.

摘要在分析现有静态结构双边沿触发器和动态结构双边沿触发器优缺点的基础上，该文提出了半静态结构双边沿触发器设计。

In this paper ,the unusual phenomena of TTL JK edge-triggered flip-flops are brought forth by experiment when the Cp edge's time is excessive long , and the cause of it is proved up , the formulae for the maxima of CP edge's time are set up as well , which is consistent with the practical measurement.

文献[1]在TTLJK触发器的评价与选用概要中，把对CP边沿时间要求作为衡量触发器品质优劣的主要指标之一，文献[2]研究表明，若CP边沿时间过长，在CP下降沿会出现集成TTL主从JK触发器输出状态的错误变化。

To solve the problems of the limescale ,the oxidation which are produced by the direct contact between a metallic conductor and water, the detecting reliability and the service life, the utility model adopts the technical proposal as below: the proposal comprises a monostable controllable trigger, a second low-pass filter, a voltage follower and a display circuit, the power circuit links with the monostable controllable trigger, the second low-pass filter, the display circuit and a timebse pulse circuit separately, the utility model is characterized in that the monostable controllable trigger, the second low-pass filter and the display circuit sequentially links, the monstable controllable trigger separately links with a water lever sensor and the timebase pulse circuit.

为了解决金属导体与水直接接触会产生水垢和氧化，影响检测可靠性和使用寿命的问题，本实用新型采用了以下技术解决方案：它包括单稳可控触发器，二阶低通滤波器，电压跟随器和显示电路，电源电路分别与单稳触发器，二阶低通滤波器，显示电路和时基脉冲电路相接，其特征在于单稳可控触发器，二阶低通滤波器，电压跟随器和显示电路依次相接，单稳可控触发器分别与水位传感器和时基脉冲电路相接。

To solve the problems of the limescale ,the oxidation which are produced by the direct contact between a metallic conductor and water, the detectingreliability and the service life, the utility model adopts the technical proposal as below: the proposal comprises a monostable controllable trigger, a second low-pass filter, a voltage follower and a display circuit, the power circuit links with the monostable controllable trigger, the second low-passfilter, the display circuit and a timebse pulse circuit separately, the utility model is characterized in that the monostable controllable trigger, the second low-pass filter and the display circuit sequentially links, the monstable controllable trigger separately links with a water lever sensor and thetimebase pulse circuit.

为了解决金属导体与水直接接触会产生水垢和氧化、影响检测可靠性和使用寿命的问题，本实用新型采用了以下技术解决方案：它包括单稳可控触发器、二阶低通滤波器、电压跟随器和显示电路，电源电路分别与单稳触发器、二阶低通滤波器、显示电路和时基脉冲电路相接，其特征在于单稳可控触发器、二阶低通滤波器、电压跟随器和显示电路依次相接，单稳可控触发器分别与水位传感器和时基脉冲电路相接。

The article researched new type thyristor trigger that adapts the frequency of input power automatically, then analyzed the designing ways and process of frequency-tracked trigger in detail, yet validated capability of trigger through experiment and actual appliance in project, we also build up the fault-diagnosed and disposal cell of hypogyny machine with SIMATIC S7-200 PLC, besides, programmed and debugged to realize various monitor and diagnose; more, smart design make protection function more perfect and action more sensitive, so it can realize perfect swift and reliable protection under fault condition.

本文重点研究了以频压变换技术为核心的新型频率跟踪触发器，详细分析了频率跟踪触发器的设计思路和设计过程，实现了在同一移相控制电压下，当同步电压频率大范围变化时触发器输出触发脉冲的电角度保持不变的目的，满足了项目对同步电压频率变化时晶闸管准确触发的要求；并通过实验和工程实际应用验证了触发器的性能。设计了基于SIMATIC S7-200 PLC软硬件的故障诊断系统并调试了各项监控、诊断功能；实现故障条件下准确、迅速及可靠的保护。

It will not only contribute to the understanding of the working principle of monostable ...

这有利于对单稳态触发器工作原理在本质上的理解，同时为无稳态触发器、多值单稳态触发器等的研究提供了理论依据。

Therefore, this paper seeks to introduce to students how to analyze and solve these problems, how to master the drawing techniques of Oscillogram based on the real understanding of JK Trigger s principle, and thus help cultivate their flexible skills in problem - solving and a practical attitude towards study.

由于触发器具备这样的特性，所以作波形图时要考虑各种原来的输人状态及其变化情况。 JK角虫发器是触发器中的一类重要触发器，它可分为主从型JK触发器和边沿型JK触发器等。

Sequential logic circuits design can be rea lized with programming.Sequential circuit,Transition system,Flip-flop,Driving condition

该方法是由待设计系统的要求说明或系统的状态图，根据所选用的触发器，得到该触发器相应的状态变化条件，从而确定触发器的驱动条件和时钟脉冲，设计出所需要

The paper presents analysis and design methods of sequential logical circuit to make reader under-stand principles of the basic trigger,master—slave trigger and the edge tripple based on knowing the combina-tional logical circuit design.

摘 要：介绍了时序逻辑电路的分析和设计方法，使读者在了解了组合逻辑电路设计的基础上，了解基本触发器、主从触发器和边沿触发器原理，能够分析、设计以触发器为核心元件，且与电路初态有关的时序逻辑电路。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。