查询词典 analog

In front of the A/D converter in an analog conversion system is usually located a sample-and-hold circuit.

在模拟量转换系统中在模/数转换器的前端通常都会有一个采样-保持电路。

In the system of signal acquisition, the A /D converter confined the input value of analog signal voltage.

在数字信号采集系统中，A /D转换器对输入的模拟信号电压有一定的限制。

As the ligament between analog signal and digital processing, the high performance A/D converter is more and more important for the whole design system.

作为模拟信号和数字处理之间的纽带，高性能的A/D转换器对设计系统的实现至关重要。

The A/D converter is the bridge from analog signal to digital signal and the key and bottleneck of the development of electronic technology.

A/D转换器是模拟信号通向数字信号的桥梁，是电子技术发展的关键和瓶颈。

Best resolution in the LCD display to show the graphics output of analog signal processing, to convert with the specific address information (the pixels on the screen of the absolute address) of the display signal, and then into the LCD panel, directly to the show signal added to the pixel corresponding to the drive pipe, some with memory addressing and write is similar.

工作在最佳分辨率下的液晶显示器把显卡输出的模拟显示信号通过处理，转换成带具体地址信息（该像素在屏幕上的绝对地址）的显示信号，然后再送入液晶板，直接把显示信号加到相对应的像素上的驱动管上，有些跟内存的寻址和写入相类似。

a kind of design project of multifunction electric power quality gauged instrument based on virtual instrument is put forward in this article.this system integrates virtual instrument programming and power electronics together,to realize diverse signals of current electric power quality field allin one.the integrated signal generator unit which carries out the collection of high speed digital data,d/ a conversion and analog output in four channels,unsymmetrical synchro control fifo etc.by fpga are introduced,the flow of electric power system various signal which generates by vc programming is elaborated,and the structural design of signal amplification unit is analysed.the experiment text result shows that this gauged instrument has attained current advanced high grade of accuracy and it will accelerate the steps of electric power quality calibration because of its accuracy and versatility.

摘 要：提出一种基于虚拟仪器技术的多功能电能质量标定仪的设计方案，采用虚拟仪器编程技术和电力电子技术相结合实现集目前电能质量领域的多样信号于一体。介绍采用fpga实现高速数字量采集、d/a转换及4通道模拟量输出、非对称同步控制fifo等的集成信号发生单元，阐述利用vc编程实现的电力系统多样信号的产生流程，分析信号放大单元的结构设计。实验测试结果表明该标定仪达到目前先进的高精度等级，由于其准确性和多功能性将加快电能质量标定的步伐。

A video card , also called a graphics card or video adapter , converts digital output into an analog video signal that is sent through a cable to the monitor .

视频卡也称图形卡，显示卡或显示视频适配器，它将数字输出转换成通过电缆发送到显示器的模拟视频信号。

In the early days of analog remote sensing when the only remote sensing data source was aerial photography, the capability for integration of data from different sources was limited.

初期的模拟遥感时，唯一的遥感数据源进行空中摄影，能力整合不同来源的数据是有限的。

In this design, hardware circuit adopts liquid crystal screen and program sensor keyboard as interactive interface, 96 single-chip as chief controller, analog multi-circuit switch as transmission signal. To improve conversion accuracy, I also bond an analog to digital converter%26mdash;AD1674, so the programs mainly contain the display program design of the LCD module, the key-board control program and cyclical monitoring of various parameters and so on.

本文的硬件电路采用液晶显示屏和触摸式键盘作为人机交互界面，用80C196KB作为主控制器，用模拟多路开关传输信号，并且为了提高转换精度，外接了模数转换器AD1674，所以本设计的程序主要包括液晶显示程序、键盘管理程序、控制巡回采样等模块。

These modular units include analog input multiplexers, analog output devices,"blank" breadboards, signal conditioning modules for thermocouples, and so on.

这些模块化的单位包括模拟输入多路复用器，模拟输出设备，&空白&面包板，热电偶信号调节模块等等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。