Comparing to the analog signal system , the digital signal system has high quality , such as the agility , credibility , and the clarity of speech 语音信号的数字化记录以及信号的数字化处理，相对模拟系统来说，具有高可靠性、高灵活性及高放音质量等特点。
In the part of rf , the main signal is analog signal , the working frequency is above ighz , and the widely used technology in radio frequency integrated circuit ( rfic ) design is gaas 对于射频部分，其处理信号为模拟信号，工作频率在1ghz以上，成熟工艺为gaas 。
Data acquisition system converts analog signal to the digital one , which can be identified with the computer . conditional data acquisition system is designed based on isa bus 数据采集系统即是完成这样的任务，将采集到的模拟信号转换成计算机能识别的数字信号。
The hardware was divided into basic control system , the input and output of analog signal , and the input and output of digital signal block to design main circuits 硬件分成基本控制系统、模拟量输入、模拟量输出、开关量输入、开关量输出以及通信等模块来设计电路。
Digital signal board mainly implements frequency giving , data display and so on . analog signal board mainly detects current signals , voltage signals and implements fault protect 数字接口完成频率给定、数据显示等功能；模拟接口完成电流、电压检测及保护等功能。
( 4 ) research on detail electronic draws on digit signal and analog signal . ( 5 ) research and designed the upstream watch system , monitors the input and output data of system ( 5 )设计can车辆网络的上位机监控系统,对整个系统的数据发送和仪表状态进行监控和测试。
The design method , debug method and the method of enhancing degree of linearity are researched in the constituting of analog signal isolating circuit with linear optical couplers 研究了应用线性光耦合器组成模拟信号隔离电路的设计方法、调试方法以及提高线性度的方法。
The control system not only realizes the real - time operation and detects the status of instrument , but also collects data of many analog signals of response cup 控制系统除了实现对仪器的实时操作、监控其运行状态外，还要对当前反应杯的多路模拟信号进行实时数据采集。
It ' s special for led display screen and we studied it carefully . it has high performance and high accuracy . analog signals from vga port can be dealed with by this block 本文研制了一种基于pc机的用于vga模拟端口信号处理的高性能、高精度、 led显示屏专用的接口卡。
Data acquisition system is a closed loop system which converts analog signals into digital signals to analyze , deal with , memory , display and treat with alarms 数据采集系统是把模拟信号转换成数字信号，并通过计算机进行分析、处理、存储、显示和报警处理的闭环系统。
