1999年-2010年英语专业八级真题及答案汇总 | ||
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发表时间:2011-2-19 22:05:05 来源: 互联网 点击次数:47020次 | ||
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a proud computing tradition. In 1952, it became the first educational institution to build and own its own computer.
That computer, ILLIAC, was four metres tall, four metres long and sixty cen timetres deep. Its processing speed was about 50 kilohertz compared with 200 meg ahertz-that’s 200,000 kilohertz for today’s computers. At the state-of-the-art Beckman Institute for Advanced Science and Technolo gy, researchers from disciplines as far-ranging as psychology, computer science and biochemistry are focusing on biological intelligence and human-computer inte lligence interaction. Beckman also houses the National Centre for Supercomputing Application (NCS A), which played a key role in the development of the Internet global network. I t was NCSA that developed Mosaic, the graphically driven programme that first ma de surfing on the Internet possible. Mosaic, introduced in 1992, has been replaced by much more powerful Interne t browsers such as its successor Netscape or Microsoft’s Internet Explorer. NCSA officials say they are now trying to bring more advanced computing and communication to research scientists, engineers and ultimately the public. “What we’re looking for is a national system in which the networks are 10 0 times greater than the Internet today, and the supercomputers are 100 times more powerful,” said NCSA Director Larry Smart. A proposed joint project would develop a prototype or demonstration model f or the “21st century national information infrastructure” in line with an init iative announced by President Bill Clinton last October. If funded by the National Science Foundation, the new structure would take effect on October 1st. NCSA, one of the four operational federal supercomputer centres in the coun try, is awaiting a decision from the Foundation’s board late this month on a co mpetition for US $ 16 million in continued annual federal fund 上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] 下一页 |
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