电路

Just pay attention to that the gains for plus and minus signals are the same, and the area of the signal around zero. I checked the LM35, the accuracy is good, but does it need 2 diodes in series to measure the temperature lower than -20 degree C? You could consider TC1047A that I used before, it doesn't need any other component, and it can go directly to A/D.

我用4051是想将AD620的＋/-输出信号不通过绝对值电路，而是接一个反相电路，反相前后的信号通过4051和极性判断电路有选择的将信号的绝对值电压再送入AD，用这个方法也能处理温度传感器LM35的输出信号，我想这是个比较安全的方法了吧！

The base of computer culture, c programmer, fundamentals of analog electronic circuits, fundamentals of digital electronic circuits, data structure, principles of computer composition, operating system, discrete mathematics, computer network, principles of microcomputer, 8086/8088 macro assembler language; multimedia technology; the principles of database; oopl( errorobject oriented programming language); fundamentals of compiling; software engineering; numerical computational method; mcs51/96 principle of single-chip computer; artificial intelligence; computer system organization; digital interface and digital circuits; java programming language; data structure; operating system; computer network; technology of electronics, etc.

计算机文化基础、c语言程序设计、模拟电路基础、数字逻辑电路基础、数据结构、计算机组成原理、操作系统、离散数学、计算机网络、微型计算机原理、8086/8088宏汇编语言程序设计、多媒体技术、数据库原理。面向对象语言程序设计，编译原理，软件工程基础，数值计算方法、mcs51/96系列单片机原理与应用、人工智能、计算机系统结构、数子接口技术与电路、数据库设计基础 java语言，数据结构，操作系统，计算机网络，电子技术等。还有一些选修的课比如：tcp/ip网络协议分析基础、oracl数据库原理，db2数据库原理等。

Base on the principle, the main circuit and control circuit of 2-phase hybrid stepping motor systems are designed. The system can realize many functions such as fix-frequency pulse width modulation, current sampling, power magnifying, ring distribution, producing control signal, and so on.

完成了对二相混合式步进电动机微步驱动系统主电路及控制电路的具体设计，实现了恒频斩波、信号检测、环形分配、微步信号的产生等功能，并搭制了实验电路进行实验验证。

The application of Markov chain is described in this paper, which belongs to static approach.

这种方法应用随机过程中的马氏链对组合电路中的动态功耗进行分析，属于静态的分析方法，已知输入信号的统计特征和电路的逻辑功能就能够对组合电路的动态功耗进行分析。

The circuit of range finder is expounded in systemic hardware. The operation control and the selection of stepper motors, the flow chart of main programme , the circuit of meterage of temperature and display etc are primarily designed.

系统的硬件部分，对测距电路做了简单的设计与分析；对步进电机的选定及其运行控制、测温电路及其程序、显示电路做了初步的设计；介绍了控制芯片AT89C51及对主程序流程图做了简单的设计等。

The method of "Logical Effort Delay Model" allows designers to quickly estimate delay time and optimize logic paths, but the previous variances of logical effort models do not mention how to handle process, voltage, and temperature variations appropriately, which may induce a serious misestimate.

Logical Effort Delay Model是一个可让电路设计者以简便的手算方式快速估计电路延迟并完成初步电路最佳化的方法。

The experimental results show that controlling the pulse width of monostable trigger with CPLD on the basis of full digital ciruits effectively helps the realization of mi...

实验结果表明在全数字电路的基础上，用可编程逻辑器件实现的单稳态触发器脉宽控制能有效地实现激光引信电路系统小型化，提高电路的可靠性

It consists of many ele- mentary pulse networks such as: Transistor forming and shaping circuit,trrnsistor blocking oscillator,multivibrator,time delay circuit and "and" gate,etc.

本文专门讨论了利用脉冲选择的晶体管化同步分频系统的线路综合原理和研制技术问题，对组成系统的各种单元脉冲电路，如晶体管窄脉冲形成器，晶体管间歇振荡器，晶体管多谐振荡器，晶体管延迟电路以及晶体管门电路等均作了较深入的分析，并给出相应的实验结果。

In the model design of protection unit, we realize easy and reliable circuit of protection and checkout with the help of the CPLD technology, and realize the latching circuit with the NAND gate. All these are to avoid the wrong action during the real operation.

在模板的保护单元设计中，在复杂可编程逻辑电路中设计了一种简单可靠的保护校验电路，外加与非门实现的闭锁电路，确保在实际运行中不会产生误动作。

One new usage of the RC integrated circuit is proposed,which uses the RC integrated circuit and the NAND gate to form a timing control switch together,thus realizes the design of guarding against unusually triggers of the ve.

针对这3种情况，对相应电路进行了改进，提出了RC积分电路的一种新的用法，使用RC积分电路和与非门一起形成一个延时控制开关，从而实现了车辆检测器的防非正常触发设计。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。