The Brain and the Computer
Some recent developments in the computer industry make scientists predict that the gap between human beings and machines will be closed about the year 20000.
To understand the significance of this prediction let us compare the human brain with existing computers. The brain consumes electrical energy at the rate of 25 watts and occupies a volume of one tenth of a cubic foot. The brain houses between 10 billion and 100 billion items of information. Every brain cell is directly connected to many other cells. As a result, the cells in which information is stored can communicate with thousands of other cells.
However, the computer consumes 1000,000 watts of electrical power and occupies hundreds of cubic feet of space. Its million items of immediately accessible information. In contrast, the computer memory is like a cell of pigeonholes, with no thinking capacity and no connections elsewhere.
In a word, the electronic brains are hopelessly inadequate in comparison with the human brains.
BEC商务英语中级:应试技巧之阅读篇
BEC阅读训练:私人银行前景好
BEC写作段落表达四大基本要点
BEC中级阅读: 中国理财产品销售量大幅飙升
BEC考试听力常考短语4
BEC商务英语中初级写作指导:道歉与解释
BEC中级写作样题解析(1)
2012年商务英语考试初级口试指导:启事
BEC考试听力常考短语6
BEC考试听力常考短语1
BEC:商务英语中索赔必备语句(1)
BEC商务英语高级口语练习(6)
BEC中级阅读:不要沉迷过去的成功
BEC中级阅读:Hotmail更名Outlook
BEC听力常考短语100例(4)
听力完全突破四大方法
BEC考试听力常考短语3
BEC商务英语中初级写作指导:感谢信
商务交际中闪光的英语口语集锦
BEC考试听力常考短语7
BEC中级写作样题解析(2)
BEC中级短文听力训练技巧
BEC听力常考短语100例(3)
BEC中级真题口试常用句型
BEC考试听力常考短语2
BEC听力常考短语100例(1)
Albee的BEC阅读技巧分享
BEC中级写作样题解析(3)
2012年商务英语考试初级口试指导:通知
商务英语BEC阅读答题技巧
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |