12. 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.
2016届高考英语精品专题必做练习:书面表达(4)
2016届高考英语精品专题必做练习:书面表达(3)
国内英语资讯: 18 injured as escalator in Hong Kong shopping mall suddenly reverses
2016届高考英语高频词汇必备及训练:7 Word版含答案
在伦敦,有哪些事不应该做?
2016届高考英语精品专题必做练习:完型填空(4)
国内英语资讯: Chinas air quality worsens in first two months
看美剧学口语:“你是老板,你说了算!”
体坛英语资讯:Unbeaten Canada prevail over Russia into World Womens Curling Championships final
有这样的慰藉就够了,这就是幸福
2016届福建省高考英语新题型训练:3
2016届福建省高考英语新题型训练:4
研究:衣着性感让女性看起来更聪慧
2016届高考英语精品专题必做练习:单项选择(4)
2016届福建省高考英语新题型训练:17
2016届高考英语精品专题必做练习:书面表达(7)
2016届高考英语高频词汇必备及训练:6 Word版含答案
2016届高考英语精品专题必做练习:单项选择(3)
2016届福建省高考英语新题型训练:2
2016届高考英语精品专题必做练习:单项选择(1)
2016届高考英语精品专题必做练习:单项选择(2)
2016届高考英语精品专题必做练习:完型填空(1)
2016届高考英语精品专题必做练习:单项选择(6)
国际英语资讯:Spotlight: S. Korean activists gather signatures to prevent THAAD deployment
能够快速掌握的超有用技能
国内英语资讯:China holds Belt and Road music festival
2016届高考英语精品专题必做练习:完型填空(7)
2016届高考英语高频词汇必备及训练:9 Word版含答案
2016届高考英语精品专题必做练习:完型填空(5)
2016届高考英语精品专题必做练习:完型填空(3)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |