查询词典 logical circuit

This paper precisely conducts the special topic research in view of some important technologies of the digitized control module.(1) AC motor control circuit of PAN/TILT is designed ,which speed is controlled by AT89C51 MCU. DC motor control circuit of LENS is designed too.(2) The hardware and software of automatic temperature control is designed, which used in camera protect box without A/D IC. A kind of single wire communication IC is used in the circuit. So, the program is given.(3) A method of video switch without picture shock is discussed in this paper, and 16x8 video switch circuit is designed. AT89C51 can carry out time sequence logical control with the sync signals by request..(4) The module of real-time clock is designed, in which, LCM is used, a kind of three-wire communication IC is used too.

1给出了一种由89C51单片机控制的简单易行的交流云台转动变速控制电路，实现了云台及其电动三可变镜头的控制；(2)给出了无需外加A/D、单线通信的防护罩自动温度控制电路，完成了单片机温度控制软件的设计；(3)提出了"无抖动"视频切换的设计思想，给出了16×8的视频切换电路，利用单片机在视频信号的场消隐期控制切换，从而实现了"无抖动"切换；(4)给出了一种三线接口通信的液晶显示实时时钟电路，完成了程序设计；(5)提出了在视频监控系统数字控制模块中，用CAN总线取代传统的RS-485总线，实现PELCO-P协议传输的方案。

Cell routing is based on the principle of logical channels with dual identification: the cell header contains the identifier of the basic connection to which the cell belongs-called a virtual circuit and the identifier of the group of VCs to which the connection belongs-called a virtual path.

信元寻找路由是基于带有双重识别的逻辑信道原理：信元头包含了信元所属的基本连接识别符，这种基本连接称作虚电路，另一种是连接所属的 VC 组识别符，称作虚路径

Objective: This article elaborated the counter in electronic design function, this design through sent to the digital circuit as well as the logical function analyzes more explicit explanation its design the principle to grasp center the scale integration counter use and the function tests the method.

目的：本文阐述了计数器在电子设计中的作用，该设计通过对数字电路的以及逻辑功能法分析更明确的说明了其设计的原理掌握了中规模集成计数器的使用及功能测试方法。

The logical part of the driver uses a high grade single chip microcontroller.The driver has a special structure switching main circuit,therefore it eliminates the driving chip of the power devices.The driver needs only one exterior power supply.

驱动器逻辑部分采用高性能的单片机，开关主电路中采用特殊结构，省去了功率器件的驱动芯片，整个驱动器只需一个外部电源。

Introduction to Law, Introduction to Computer, English, Calculous, General Circuit, Linear Algebra, Circuit and Electronic Technology, Assembler Language Program Design, Simulated Circus, C Language Program Design, Digital Circus and Logical Design, Data Structure, Operation System, Specialized English, Principle of PC, PC Assembly and Maintenance, Network Technology, Database System and Application, Tailored Program Design, Interfacing Technology, Multi-media Design, Animation Design, Website Design, Computer Graphic Design, Computer Maintenance Technician Qualification, Practice of Basic Skills in Electronics and Electric Engineering, Electronics and Digital Electronic Technology.

具有计算机软、硬件理论知识及安装调试维护和检修的能力；具有熟练应用计算机系统基本软件及一定的程序设计能力；具有计算机网络与通讯系统的规划设计、安装施工、调试维护的能力；具有多媒体信息加工、处理与合成及网页设计与制作能力；具有使用相关软件进行动漫画制作、编辑、组合等能力。

Finally, the design results are given, including simulation waves and circuit after logical synthesis.

最后给出了设计结果，包括仿真波形、逻辑综合后的电路。

A fault that results from changing a logical function of a circuit element to another function.

一种使电路元件的逻辑功能改变成另一种功能的故障。

A logical link is a virtual circuit on which information flows in two directions.

逻辑链路是一条信息可以双向流通的虚拟电路。

The simple logical function electric circuit still exists.

简单的逻辑功能电路依然存在。

In digital circuitry a circuit, which recognizes a high level to be a logical 1 and a low level as a logical-0 is said to use positive logic .

在数字电路中，每个将高电平识别为逻辑 l。把低电平识别为逻辑0的电路，被称为使用正逻辑。

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。