首页
登录
职称英语
[originaltext] A computer is a machine designed to perform work mathematical
[originaltext] A computer is a machine designed to perform work mathematical
游客
2023-07-16
20
管理
问题
A computer is a machine designed to perform work mathematically and to store and select information that has been fed into it. It is run by either mechanical or electronic means. These machines can do a great deal of complicated work in a very short time. A large computer, for example, can add or subtract nine thousand times a second, multiply a thousand times a second, or divide five hundred times a second. Its percentage of error is about one in a billion digits. It has been estimated that human beings making calculations average about one mistake per two hundred digits.
The heart of an electronic computer lies in its vacuum tubes, or transistors. Its electronic circuits work a thousand times faster than the nerve cells in the human brain. A problem that might take a human being two years to solve can be solved by a computer in one minute, but in order to work properly, a computer must be given instructions--it must be programmed.
Computers can be designed for many specialized purposes--they can be used to prepare payrolls, guide airplane flights, direct traffic, even to play chess. Computers play an essential role in modern automation in many plants and factories throughout the world.
选项
A、One second.
B、Two years.
C、One minute.
D、A day.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2842337.html
相关试题推荐
[originaltext]AyearagoAugust,DaveFusslosthisjobdrivingatruckfor
[originaltext]AyearagoAugust,DaveFusslosthisjobdrivingatruckfor
[originaltext]IgrewupinahousewheretheTVwasseldomturnedonandwi
[originaltext]IgrewupinahousewheretheTVwasseldomturnedonandwi
[originaltext]M:Hi,Helen,I’vebeenlookingforyou!W:Really?Suchacoinci
[originaltext]M:Hi,Helen,I’vebeenlookingforyou!W:Really?Suchacoinci
[originaltext]M:Hi,Helen,I’vebeenlookingforyou!W:Really?Suchacoinci
[originaltext]M:Thenewmayorisreallyagoodpublicspeaker.Thespeechhed
[originaltext]M:Thenewmayorisreallyagoodpublicspeaker.Thespeechhed
[originaltext]M:Thenewmayorisreallyagoodpublicspeaker.Thespeechhed
随机试题
[originaltext]Howdoyougetalongwithyourcolleagues?[/originaltext][origin
Mostscientistsbelieveitislegitimatetouseanimalsinmedicalresearch.A、de
ManyleadingscientistssownthroughtheyearsfromGalileotoEinsteinhave
TheLureofaBigCityVacation[From
新课程强调改变学生的学习方式,倡导建立具有“_____、_____、_____”
属于私募股权投资基金常见的投资条款的有()。 Ⅰ.内部控制条款 Ⅱ.估
要素比较法是从( )衍化而来的,它也是按要素对岗位进行分析和排序。A.要素计点
下列对于本公文的附件及成文日期的叙述,错误的是:() A.附件说明位置错误
关于软膏剂质量检查的叙述,正确的有A.外观应均匀、细腻、有适当的黏稠性,易于涂布
下列关于松套法兰叙述正确的是()。A.多用于铜、铝等有色金属及不锈钢管道上
最新回复
(
0
)