Прочтите следующие тексты. Найдите существительные в функции определения

New Russian Dictionary

A 17-volume dictionary of Russian literary language and grammar from Pushkin's time to the present day has been published in Leningrad.

In contains 120,480 words, their history, word formation, spelling and pronunciation, but excludes dialects, obsolete words and special scientific and technical terms. The dictio­nary is the result of 15 year-work by a number of noted linguists, philologists and experts in other fields.

***

Let's have a look at the history of computers. The first general-purpose electronic digital computer came out in the USA in 1946. It was called ENIAC (Electronic Numerical Integrator And Computer). ENIAC contained about 18,000 vacuum tubes, weighed more than 30 tons, occupied more than 1,500 square feet of floor space, and con­sumed 150 kilowatts of electricity during operation. The first-gene­ration computer performed about 5,000 additions and 1,000 multi­plications per second and was slow in comparison with modern Machines. In the late 1950s the second generation of computers appeared and these performed work ten times faster than the first computers. The reason for this extra speed was the use of transistors instead of vacuum tubes. The third-generation computers appeared in 1965. They performed a million calculations per second, which was 1000 times as many as first-generation computers. Now tiny inte­grated circuits controlled computers.

By the late 1960s many large businesses depended on computers. Many companies linked their computers into networks and that made it possible for different offices to share information. During this time computer technology improved rapidly. In the 1970s there appeared a microprocessor. And in 1975 American engineers devised the first personal computer, Altair. Millions of individuals, families and schools began to use PCs.

Present-day computers complete millions of instructions per second. Some experts predict that a new generation of intelligent machines will process data with the help of beams of laser light, rather than electric current. They say that these computers will store data on individual molecules and that virtual reality will play a large role in education.

New Form of City Transport?

Just don't call it a high-tech scooter! The Segway is the world's first self-balancing human transporter. It is quite stable on two wheels and runs on ordinary household electricity at the speed of 12 mph having the range of 15 miles. Four major elements of the Segway include the wheel and motor assembly, the sensor system, the circuit board brain and the operator control system. Balancing is controlled by a solid-state silicon gyroscope* system, which passes all tilt information to the two electronic controller circuit boards comprising 10 onboard microprocessors, which in total are three times as powerful as a typical PC.

Дата добавления: 2015-05-31