翻译下列英文Inputtothe
Input to the computer and output from the computer are provided by peripheral devices which have many different purpose。 Most essential of all is the console terminal which provides communication between the user and the computer。 Typically this is a keyboard plus either a video display device...全部
Input to the computer and output from the computer are provided by peripheral devices which have many different purpose。
Most essential of all is the console terminal which provides communication between the user and the computer。
Typically this is a keyboard plus either a video display device of a printing type output device。
Other peripheral devices include communication equipments which permit transfer of data over telephone lines to and from distant computers。
In a lab or in a manufacturing environment analog signals from voltage and current sources as well as electrical signals indicating pressure or temperature can be digitized by an "Analog to Digital converter" and presented to the computer as binary numbers。
Similar binary data, from the computer can be converted to an analog voltage by a "digital to analog converter"。
Digital recording of music uses these principles。 Graphics terminals permit interactive presentation of information in the form of bar graphs and maps as well as drawings for electronic and mechanical parts。
Mechanical parts can be designed using a graphics terminal, then mathematically subjected to stress analysis to determine weak points。
A modified design can then be produced in hours rather than days or weeks。 All this is possible through the use of these specialized peripheral device plus the supporting software of program to control them。
Computer Assisted Design encompassed the above processed and equipment。
1 Analog signals___
A can be converted to binary numbers
B can be digitized by a Digital to Analog converter
C can be digitized by a video display converter
D can be digitized by keyboard
2 which statement is true
A analog signals can not indicate temperature
B the output of "digital to analog converter" is analog signal
C Graphics terminals prohibit interactive presentation of information in the form of bar graphs and maps
D computer Assisted Design do not need any peripheral device
输入计算机和从计算机输出是由许多不同外围设备所提供。
最基本的是提供在用户和计算机间通信的控制台终端。这典型地是一个键盘加上一视频显示器或者一打印输出设备。其它外围设备包括通过电话线进行调动远程的数据的计算机通讯器材。在实验室或在制造环境中，从电压和电流源模拟信号及表明压力或温度的电子信号可由" 模拟信号及数字信号交换器"数字化，并被作为二进制输入计算机。
相似的，从计算机来的二进制数据可以被" 数字信号与模拟信号交换器"转换成模式电压。数字记录音乐就使用这类外围设备。图表终端允许信息以条线图及地图出现，也可以画成电子图及机械零件图。机械零件也能使用图表终端来设计,然后通过计算进行强度分析并确定脆弱点。
一个被修改的设计可能然后在几小时后就制造出来，而不是等几天或几星期。所有这些在使用这些专用外围设备加上控制他们适当支持软件时是可能的。
计算机辅助设计包含上述处理和设备。
1 模拟信号___
A 可能被转换成数字信号
B 可能由数字化对模拟信号交换器
C 可能由一台视频显示器交换成数字
D 数字化可能由键盘实施
答案是A，
2那个答案属实
A 模拟信号不能表明的温度
B " 数字式对类似物交换器" 输出的是模拟信号
C 图表终端禁止信息以条线图的形式与地图形式交互输出
D 计算机辅助设计不需要任何外围设备
答案是B。收起
