数据采集卡是一种把外界模拟信号转换成数字信号，并把数字信号输入到计算机系统的一种AD接口卡。
Data acquisition card is the AD interface card, which converts the analogy signal to the digital signal, and transfers the digital signal to the computer.
硬件上详细给出了系统主要功能模块的工作原理和设计内容，包括模拟信号输入电路、数字信号输入输出电路、看门狗及系统复位电路等。
On the hardware design we provide the operation principle of the main function module and design content in detail, including Analog Inputting, Digital Inputting and Outputting, Watchdog, etc.
利用数字输入，控制器可以确定外部数字信号的状态。
The digital inputs allow the state of external digital signals to be determined by the controller.
简述了以串行方式输入8位数字信号、最大可控电流为2A的数控恒流器件的设计思想和性能。
This paper presented the design thoughts and character of digital control current regulators, using 8bit digital signal of DAC serial input data and about 2a supreme output current.
功能强大的数字信号处理器adsp- 21161N有两个高速的并行传输链路口，可以分别实现视频数据的实时输入和输出。
Digital signal professor ADSP-21161N with strong functions, has two high-speed parallel transmission link ports, and can realize separately real time input and output for video data.
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。
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.
而数字接收机则可以有效避免这类问题，它可以保留信号的全部信息，采用数字信号处理器对输入信号进行特征提取，分选和识别。
The digital receiver can avoid above problems effectively. It can keep all characters of signals and realize the signal feature extraction, separation and recognition with digital signal processors.
一段时间后，人们意识到模拟系统的仿真编码其实是一个作用于离散时间间隔的输入和输出样本的数字信号处理系统。
After a while it was realized that the simulation coding of the analog system was actually a DSP system that worked on samples of the input and output at discrete time intervals.
一段时间后，人们意识到模拟系统的仿真编码其实是一个作用于离散时间间隔的输入和输出样本的数字信号处理系统。
After a while it was realized that the simulation coding of the analog system was actually a DSP system that worked on samples of the input and output at discrete time intervals.
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