首页
登录
职称英语
[originaltext] The use of silicon is basic to the developments which have ta
[originaltext] The use of silicon is basic to the developments which have ta
游客
2023-08-02
55
管理
问题
The use of silicon is basic to the developments which have taken place since the 1950s. This element has special electrical properties. It is a semiconductor, half way between a full conductor such as copper and an insulator like plastic. By adding small amounts of other chemicals to pieces of silicon and then joining the resulting different types together in various ways, a very fast, efficient "switch" can be produced.
As manufacturing processes grew more and more sophisticated, it became possible to pack more and more individual transistors onto a single piece of silicon called chip. These chips are at most 1 centimeter square and a fraction of a millimeter thick. In 1960 a chip could hold one transistor. Today it can contain as many as a million.
Silicon chips are changing our world at an enormous pace. They affect or will affect all aspects of our lives—industry, transportation, finance, education, medicine, communication, domestic and recreational spheres. By using micro-technology, computers can now be made with an almost infinite operational capacity. The cost is actually decreasing while their speed of operation is increasing. Their micro-components will last indefinitely under normal conditions.
选项
A、Use of copper conductors.
B、Use of plastic insulator(绝缘体).
C、Use of silicon(硅) semiconductors.
D、Elimination of chemicals.
答案
C
解析
What has been basic to advances in micro-technology since the 1950s?
转载请注明原文地址:https://www.tihaiku.com/zcyy/2890215.html
相关试题推荐
[originaltext]Therearebetween3,000and6,000publiclanguagesinthewor
[originaltext]Therearebetween3,000and6,000publiclanguagesinthewor
[originaltext]DeepSpringsisanAmericancollege.Itisanunusualcollege
[originaltext]DeepSpringsisanAmericancollege.Itisanunusualcollege
[originaltext]Youshouldnotfearspidersbecauseoftheirpoison.Ofallt
[originaltext]Youshouldnotfearspidersbecauseoftheirpoison.Ofallt
[originaltext]Phonebookshavewhite,blueandyellowpages.TheWhitePage
[originaltext]W:OK,asyouallknow,tomorrowwe’regoingtothemuseumtosee
[originaltext]W:Excuseme,I’vebeenusingthisoldbookforaresearchprojec
[originaltext]W:Excuseme,I’vebeenusingthisoldbookforaresearchprojec
随机试题
Highgradesaresupposedto_____academicability,buthisactualperformanced
[originaltext]W:Thankyou,thankyouandwelcometoeveryone’sfavoritegames
Thedifferencebetweenaliquidandagasisobvious【C1】______theconditions
—Whichofthosesilkshirtsdoyoulikemost?—______ofthem.Theyarebothnice
CONTROVERSYABOUTCAUSINGEMOTION(1
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
在一次语言活动中,某教师给幼儿讲“小猫钓鱼”的故事。为了加深幼儿对故事的理解,教
在测量下面哪种反应时的时候,需要加入侦察实验?( )A.A反应时 B.B反应
下列哪项不属于免责事由()A.因故意或重大过失,造成对方财产损失的 B.自
下列关于登记性误差的说法,正确的是( )。A.登记性误差主要是指在用样本数据进
最新回复
(
0
)