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
2023-07-26
25
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 do properly, a computer must be given instruction -- it must be programmed.
Computers cab be designed for many specialized purposes -- they can be used to prepare payrolls, guide airplane flights, direct traffic, even to play chess. Computers can play an essential role in modern automation in many places and factories throughout the world.
选项
A、It works faster than human brain.
B、It seldom makes errors.
C、It can solve complicated problems.
D、It can "think" without information fed into it.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2872039.html
相关试题推荐
[originaltext]Wehavejustclimbedoutofaspaceshipontothesurfaceoft
[originaltext]Wehavejustclimbedoutofaspaceshipontothesurfaceoft
[originaltext]Wehavejustclimbedoutofaspaceshipontothesurfaceoft
[originaltext]Manhasabigbrain.Hecanthinkandspeak.Scientistsused
[originaltext]Themostimportantthingaboutfirstaidistodoonlywhati
[originaltext]Themostimportantthingaboutfirstaidistodoonlywhati
[originaltext]W:Goodeveningandwelcometotonight’sprogram.OurguestisDr
[originaltext]W:Goodeveningandwelcometotonight’sprogram.OurguestisDr
[originaltext]M:Isthisseattaken?W:Idon’tthinkso.Theguywhowashere
[originaltext]M:Isthisseattaken?W:Idon’tthinkso.Theguywhowashere
随机试题
[originaltext]M:Carol,didyoucookthemealforTom’sbirthday?W:IhadTim
Thereisnotaconductor______resiststheflowoftheelectricalcharges.A、whi
在结构动力模型试验中,解决重力失真的方法是( )。A、增大重力加速度 B、增
不能防止药物氧化的方法是A降低温度 B避免光线 C通人二氧化氮气体 D加抗
(共用题干)患者男,26岁。头晕、乏力、面色苍白10年,加重3天,巩膜黄染。实验
我国的城市合作银行实际是( )商业银行。A:国家独资 B:合伙制 C:股份
Thechangeinthatvillagewasmiraculou
《城建监察规定》中明确规定,城建监察队伍的基本职责主要有()A.实施城市园林
简述现代企业人力资源管理各个历史发展阶段的特点。
下列关于土方填筑工程计量与支付的说法正确的是( )。A.坝(堤)体填筑最终结算
最新回复
(
0
)