首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
自考
The first modern computer was built at Harvard University in 1944. It was the first machine that could automatically carry out a
The first modern computer was built at Harvard University in 1944. It was the first machine that could automatically carry out a
admin
2010-12-12
67
问题
The first modern computer was built at Harvard University in 1944. It was the first machine that could automatically carry out a long list of calculations, all in the proper order. It used mechanical and electronic parts. In the years that followed, computers became much more complicated, much faster in operation, and very widely used in science and in business.
This came about for two main reasons. Firstly, scientists and engineers needed correct answers to important and complicated problems. Say a group of engineers were building a new type of rocket engine. An important question might be: "how should each part be designed cheaply and efficiently? " There are mathematical rules for calculating shapes, pressures, stresses, and efficiency.
Other questions might be "Is our basic design a good one?" or "How much of each material do we need?" Again, there are mathematical rules which can be used to answer these questions. Mathematicians could write the questions for solving problems such as these. But the amount of calculation was too great for them to carry out. The invention of the automatic computer enabled them to solve such complicated problems.
The second main reason for the development of computers is found in the world of business. Any big business had enormous quantities of records to keep, and thousands of calculations to make every week. It has records of every bit of material it buys and sells. It has records of wages and salaries to calculate and file. And probably it has to keep records of stocks of materials and production of goods. Before computers were invented, all these calculations had to be carried out, and all the records kept, by armies of accountants and clerks. Computers can do the same work more quickly and more accurately.
Before the computer was invented, calculations in business______.
选项
A、were carried out by armies
B、were made by a large number of accountants and clerks
C、were operated by recorders
D、were calculated by businessmen
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/XXAR777K
本试题收录于:
英语(二)题库公共课分类
0
英语(二)
公共课
相关试题推荐
Weallknowthathumansaredamagingtheenvironment,butwhatcanwedoaboutit?Somepeoplearetryingtodotheirbittobemo
Inaquiet,darkenedlectureroom,youbeginafrustratingfightagainstfatigue.Theoverheadprojectorhums,andyoucannotconce
Myjobis______(basic)tomakesurethatthecomputersystemkeepsworkingproperly
ThefirstmoderncomputerwasbuiltatHarvardUniversityin1944.Itwasthefirstmachinethatcouldautomaticallycarryouta
Oneofthestudentswho______totheauthorityabouttheproblemofpollutionraiseshishand.
Thephysicistinvestigatingtherelationshipbetweentimeandspace,thechemistexploringthepropertiesofanewsubstance,th
Astheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair,a
GoodCommunicationforMakingFriendsAsacommunicationskillstrainer,I’vemetawiderangeofpeople.Somepeoplehavet
ThefirstyearwasveryhardforthePilgrims,andonlyfiftyoftheoriginalonehundredpassengers【C1】______.Conditionsbegan
TheWriting’sontheWall?Isitartorisitjustvandalism(野蛮行为)?Well,it’sstillacrime,butgraffiti(涂鸦)haschangedsin
随机试题
A.快速、精确而短暂B.快速、粗糙而广泛C.缓慢、持久而弥散D.相对局限和不灵敏神经调节的一般特点是
A亚硝酸钠滴定法B碘量法C汞量法D高效液相色谱法E旋光度法以下药物的含量测定方法是盐酸肾上腺素注射液
《国务院关于投资体制改革的决定》要求推行“代建制”的项目是()。
下列属于货币市场的是()。
某公司委托证券公司发行普通股400000股,每股面值为1元,每股发行价格为16元。双方协议约定,证券公司按发行收入的2%收取佣金,并直接从发行收入中扣除。不考虑其他因素,该公司发行股票应计入资本公积的金额为()元。
因特网是()。
汉代北方各地流行的各种民间歌曲称为()
某村有年满18周岁以上村民600人,其中有120名村民联名提出罢免村委会主任。经村民会议投票表决,下列选项中哪个是罢免通过的最低人数要求?()
在Oracle数据库系统中,可以建立一种称为聚簇(cluster)的结构,这是为了______。
Itiscommonknowledgethatmusiccanhaveapowerfuleffectonour【B1】______.Infact,since1930s,musictherapistshave【B2】___
最新回复
(
0
)