For example , an input sensor may be feeding an accurate analog reading to a signal converter , but a faulty signal converter may be sending the cpu an inappropriate digital signal 例如，输入传感器向信号转换器输入一个正确的模拟信号，但是错误的信号转换可能向cpu输入错误的数字信号。
The second part studies the principle of image capturing card and ways of image capturing method . it also described how to convert the dynamic video signal to immobile image 第二部分研究了图像采集卡的原理和图像采集的方法，并对图像的动态视频信号转换成为静态的图像原理进行了叙述。
We consider testing it using photon counting mode of photomultiplier pmt to transform light signals into electric signals . much of the noise can be eliminated with an amplitude discriminator 用光电倍增管（ photomultiplierpmt ）的光子计数模式将电致发光的光信号转换为电信号来进行测试。
The data acquisition and processing system should not only convert the analogy signal to the digital signal , but also realize the specifically digital processing arithmetic expected by the user 数据采集处理系统不但需要把模拟信号转换成数字信号，而且要实现用户需求的、特定的数字信号处理算法。
To enable a digital computer to work with analogue , an analogue - to - digital ( a / d ) converter is needed to transfer analogue into digital data then stored in the random asses memory ( ram ) installed in the computer 为了使数字计算机能够工作，必须要有一个模数转换器将模拟信号转换为数字信号并存在计算机ram中。
Components of the system are realized . the system is made up of signal transformation part , image processing part , acquirement and transport of the position of defect part . 2 设计并实现了x射线无损探伤系统的硬件组成与结构，该探伤系统主要由信号转换、图像处理以及缺陷位置信息获取与传输三部分组成； 2
The pressure sensor transforms the load weight into electric signal , which through cable transmitted into controller . then the electric signal is operated and disposed by controller box , and elevator load weighing is finished 称重传感器将重量信号转换成电信号经传输电缆送给控制仪部分，由控制仪部分进行运算处理，完成电梯称重。
Modem - an abbreviated term for " modulator - demodulator . " a modem converts digital signals into analog signals ( and vice versa ) , enabling computers to send and receive data over the telephone networks 调制解调器- -是“调制器和解调器”的缩写。调制解调器可将数字信号转换成模拟信号（反之亦然） ，能使电脑在电话网上发送和接收数据。
But it is not feasible to realize the ideal sdr by directly placing the ad converter close to the antenna . converting the broadband rf signal to the if signal which can be digital is the key to realize the sdr 由于直接将a / d变换置于天线端的理想软件无线电解决方案目前还不可行,将宽带的射频信号转换为可数字化的中频信号是软件无线电得以实现的关键。
A novel high gain opto - electron detecting amplifier is proposed . to resolve the problem that weak traditional amplifiers could n ' t amplify signal effectively , this type of arnplifier is designed and elaborated here 本文提出了新型高增益光电转换放大器的设计，在硬件上解决了光电信号转换倍数小，信号弱的缺点，对电路组成模块进行了详细分析和阐述。
