查询词典 programmable

Fiber channel ; adapter ; field programmable gate array

光纤通道；适配器；现场可编程门阵列

A matrix printer with a programmable character generator(to permit non- Roman alphabets).

一种带有可编程字符发生器的点阵打印机，允许打印非罗马字符。

Programmable character generator ...

可编程字发生器。。。。

Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.

本文在混沌理论研究成果的基础上，对混沌信号的产生做了详细的分析，涵盖以下内容：首先介绍了混沌的定义，混沌信号的基本特性和各种判别方法，特别是对简单的一维Logistic映射的硬件实现问题做了初步探索；其次对混沌信号的产生方法进行讨论，借助于MATLAB、PSPICE、EWB等仿真软件，对几种混沌电路输出的混沌信号进行了分析比较，并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究，通过混沌电路调试，深入研究电路中各元器件，特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响；再次研究连续混沌系统的数字化硬件产生，设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案，在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点；最后针对不同混沌系统，采取不同算法，提取混沌特性参数Lyapunov指数，进而对不同的混沌信号发生器的性能进行了分析。

Another MCU, 89C2051 is used to realize the control of the three rows LED monitor showing coordinates of axis X and Z axis and other state of the system. Charnel A and C of 8155 are used for editor keyboard, which make the inputting or editing of the NC code and data possible. Charnel P1 of 8031 is used for the operation keyboard such as system power on/off and movement of axis X or Z. a programmable parallel I/O chip, 8255, is used to achieve system I/O and the transmission of other information. In summarize, the system developed is characterized by its simplicity, low development cost and high reliability.

在CPU存储器扩展电路设计中， CPU选用MCS-51系列的8031单片机，外扩32K的程序存储器和 8K的数据存储器，分别用于存放系统管理程序、数控加工程序以及运算数据；在显示电路设计中，选用MCS-51系列的89C2051单片机作为从CPU，控制三排LED显示器，用于X轴、Z轴动态坐标以及相关数字的动态显示；在手动键盘和编辑键盘设计中选用8155芯片的PA口和PC口作为行、列母线，扩展矩阵式编辑键盘，用于程序和数据的输入或编辑，同时选用8031单片机的P1口扩展手动键盘，用于系统启动、停止以及运动部件在X、Z轴方向的手动控制；在I/O口扩展电路设计中选用8255芯片扩展输入输出口，用于接收和传送开关量及相关信息。

Detail programmable logic design circuity is presented. The circuitry of each chute is separated and similar, which includes impute module, storage module, delay module, serial communication module comparing module and output module, etc.

给出可编程逻辑器件的具体电路设计，PLD的每路信号处理电路独立且相同，共划分输入模块、存储模块、延迟模块、串行通讯模块、比较模块、输出模块等6个模块。

The application of PLC design for cutting the cold-roll workpieces of racking in certain measurementZhenJiang OTL Storage Equipment CO.,LTD ZhangWeiguoAbstract: Cutting the cold-roll workpieces of racking in certain measurement is the most important part in the racking rollforming line ,It's mainly used to cut off the continuous workpieces according to the need of design ,The programmable logical controller replaced the traditional relay to control the system better in this design.

货架冷弯组件定尺剪切是货架冷弯成型生产线上的一个重要环节，它的主要作用是将连续生产的货架组件剪切成库房设计规划所要求的尺寸系列，传统的定尺剪切利用有接点的继电器来实现控制，为提高定尺精度，本文设计采用可编程序控制器取代传统接点继电器对系统进行改进。

According to the present situation of Guangzhou subway line 4, a control system based on programmable logic controller is presented, which can be used to alternate the working mode of subway locomotives between contacting collector and pantograph for collecting current.

介绍受电弓和受流靴这两种受流器各自的优缺点及工作原理，并针对广州地铁4号线运行中的实际情况，提出了受流方式转换过程的技术要点，设计了一种由可编程序控制器为控制核心的系统，该系统可控制地铁列车在两种受流方式之间的转换。

Explained the programmable controller's in combination lock function specifically.

具体说明了可编程控制器在密码锁中的作用。

This curriculum mainly narrated the VHDL complete characteristic, also has contained the related number system design knowledge, the content including the electronic design automation tool's use, CMOS and the programmable logical craft, the Boolean algebra and the combinatory logic design basic principle

本课程主要讲述了VHDL的全部特征，也包含了有关数字系统设计的知识，内容包括电子设计自动化工具的使用，CMOS和可编程逻辑工艺、布尔代数和组合逻辑设计的基本原则，各种建模的技术，有限状态机的设计，以及三个重要的可测试设计；扫描路径、内置自检和边界扫描等。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。