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
2024-02-27
59
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/3488299.html
相关试题推荐
[originaltext]M:Youknow,Chris,mygrandpatoldmethisstoryonceabouthis
[originaltext]M:Youknow,Chris,mygrandpatoldmethisstoryonceabouthis
[originaltext]Inmanyplacesintheworldtoday,thepooraregettingpoore
[originaltext]Inmanyplacesintheworldtoday,thepooraregettingpoore
[originaltext]Inmanyplacesintheworldtoday,thepooraregettingpoore
[originaltext]M:I’msorry,madam.Theplaneissomewhatbehindtheschedule.T
[originaltext]M:I’msorry,madam.Theplaneissomewhatbehindtheschedule.T
[originaltext]M:I’msorry,madam.Theplaneissomewhatbehindtheschedule.T
[originaltext]M:I’msorry,madam.Theplaneissomewhatbehindtheschedule.T
[originaltext]M:I’msorry,madam.Theplaneissomewhatbehindtheschedule.T
随机试题
Whatarethetwospeakerstalkingabout?[br][originaltext]M:Hi,Susan.Howa
CollegesportsintheUnitedStatesareahugedeal.AlmostallmajorAmeric
Therewere_______shopsinthecityin1982thanin1990.A、littleB、fewC、fewerD
[originaltext]M:I’msorrytotroubleyou,butIwonderifIcouldborrowyour
Thecigaretteindustrybeganinthe1870swiththedevelopmentofthecigare
[originaltext]M:Comein!W:Hi,John!(12)Ijustwonderedifyouwantedtogoo
小学低年级学生记忆的主要形式是()。 A.机械记忆 B.理解记忆 C.联想
(2018年真题)关于项目财务内部收益的说法,正确的有()。A.内部收益率
工程寿命周期成本包括()。A.工程寿命周期经济成本 B.工程寿命周期机会
胸部X线片示肺野清晰的是( )。A.动脉导管未闭 B.房间隔缺损 C.小型
最新回复
(
0
)