History of computers

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[1] Let us take a look at the history of the computers that we know today. The very first calculating device used was the ten fingers of a man's hands. This, in fact, is why today we still count in tens and multiples of tens. Then the abacuswas invented, a bead frame in which the beads are moved form left to right. People went on using some form of abacus well into the 16^th century, and it is still being used in some parts of the world because it can be understood without knowing how to read.

[2] During the 17^th and 18^th centuries many people tried to find easy ways of calculating. J. Napier, a Scotsman, devised a mechanical way of multiplying and dividing, which is how the modern slide ruleworks. Henry Briggs used Napier's ideas to produce logarithm tablewhich all mathematicians use today. Calculus, another branch of mathematics, was independently invented by both Sir Isaac Newton, an Englishman, and Leibnitz, a German mathematician.

[3] The first real calculating machine appeared in 1820 as a result of several people's experiments. This type of machine, which saves a great deal of time and reduces the possibility of making mistakes, depends on a series often-toothed gear wheels. In 1830 Charles Babbage, an Englishman, designed a machine that was called " The Analytical Engine". This machine, which Babbage showed at the Paris Exhibition in 1855, was an attempt to cut out the human being altogether, except for providing the machine with the necessary facts about the problem to be solved. He never finished this work, but many of his ideas were the basis for building today’s computers.

[4] In 1930, the first analogcomputer was invented by an American named Vannevar Bush. This device was used in World War II to help aim guns. Mark I, the name given to the first digitalcomputer, was completed in 1944. The men responsible for this invention were Professor Howard Aiken and some people from IBM. This was the first machine that could figure out long lists of mathematical problems, all at a very fast rate. In 1946 two engineers at the University of Pennsylvania built the first digital computer using parts called vacuum tubes. They named their new invention ENIAC. Another important advancement in computers came in 1947, when John von Newmann developed the idea of keeping instructions for the computer inside the computer's memory.

[5] The first generation of computers, which used vacuum tubes, came out in 1950. Univac I is an example of these computers which could perform thousands of calculations per second. In 1960, the second generation of computers was developed and these could perform work ten times faster than their predecessors. The reason for this extra speed was the use of transistorsinstead of vacuum tubes. Second-generation computers were smaller, faster and more dependable than first-generation computers. The third-generation computers appeared on the market in 1965. These computers could do a million calculations a second, which is 1000 times as many as first-generation computers. Unlike second-generation computers, these are controlled by tiny integrated circuits and are consequently smaller and more dependable. Fourth-generation computers have now arrived, and the integrated circuits that are being developed have been greatly reduced in size. This is due to microminiaturization, which means that the circuit fare much smaller than before; as many as 1000 tiny circuits now fit onto a single chip. A chip is a square or rectangular piece of silicon, usually from 1/10 to 1/4 inch, upon which several layers of an integrated circuit are etched or imprinted, after which the circuit is encapsulated in plastic, ceramic or metal. Fourth-generation computers are 50 times faster than third-generation computers and can complete approximately 1, 000, 000 instructions per second.

[6] At the rate computer technology is growing, today's computers might be obsolete by 2015 and most certainly by 2030. It has been said that if transport technology had developed as rapidly as computer technology, a trip across the Atlantic Ocean today would take a few seconds.

X. Which statement best expresses the main idea of the text? Why do you think so?

XII. Say " True" or " False". If " False”, correct the sentence. Rely on the information from the text.

3. During the early 1880s many people worked on inventing a mechanical calculating machine.

4. Charles Babbage, an Englishman, could well be called the father of computers.

6. Instructions used by computers have always been kept inside the computer's memory.

7. Using transistors instead of vacuum tubes did nothing to increase the speed at which calculations were done.

10. Computer technology has developed to a point from which new developments in the field will take a long time to come.

Characteristic, electronic, function, concept, schematically, fundamental, component, peripheral, disk, limit, personnel, compact, portable, internal, manipulation, aspect, period, extremely.

Manipulating the information, adding information, making comparison, electronic devices, storing data, complex circuits, internal operations, basic concepts, to show schematically, fundamental components, internal memory, peripheral devices, secondary memory, extremely large, routine task, creative work.

1. actual - 1) фактический, действительный, реальный;

7. to be attached to - быть привязанным к, присоединенным к

V. Define the function of Participle I in the following sentences and translate them:

1. Having improved this device they could use it for many purposes. 2. When making the experiment he made notes. 3. The vibrations of a voice speaking into the microphone of a telephone cause vibrations in an electric current. 4. This varying current is carried along a wire to a receiver. 5. Electronics in our country has developed into hundreds of research institutes and laboratories employing tens of thousands of people. 6. Our power engineering develops much faster than that of the other developed countries, including the USA. 7. Having been discovered many years ago this metal found a wide application in industry only last year. 8. While being checked the motor showed good performance. 9. The man introducing this famous scientist is the dean of our faculty. 10. Cybernetics is gaining a growing importance.

VI. Change the complex sentences given below according to the examples and translate them into Russian:

Example A: While she was preparing for her physics exam she looked through all the notes of the lectures.

While preparing for her physics exam she looked through all the notes of the lectures.

1. When he was translating the article he used a dictionary. 2. While the student was working at the problem he made many experiments.3. When the scientist was carrying out research in the field of nuclear physics he came to Dubna to work there. 4. When the worker was applying the new method of work he got better results. 5. While he was experimenting with this substance he was very careful. 6. When the engineer was improving the design he made many calculations. 7. While the man was describing this phenomenon he illustrated it with numerous examples. 8. When these scientists were working in our laboratory they obtained good results.

Example B: The scientists who are carrying out research into nuclear physics deal with most difficult problems.

The scientists carrying out research into nuclear physics deal with most difficult problems.

1. The scientist who is working at the method is well known. 2. The students who are listening to the taped lesson study at the evening faculty. 3. These postgraduate students who are watching the experiment work in our laboratory. 4. The worker who is repairing the machine is very skilled. 5. The engineer who is carrying out these investigations is a well-known inventor. 6. The students who are doing the laboratory work are from various faculties. 7. The workers who are building this house will soon finish their work.

VII. Choose the sentences with Participle I from the ones given below, translate them:

1. The falling water has kinetic energy. 2. While testing the motor we put down the results. 3. There is no simple explanation of the functioning of transistors. 4. Obtaining new data engineers can improve their knowledge. 5. Look at the reading of the device. 6. Robots are helping research scientists to answer many difficult questions. 7. By the beginning of the 20th century man had learned something of the structure of the atom. 8. When applying these automatic devices we shall be able to control automatic lines. 9. The applying of lasers enables us to amplify electromagnetic waves. 10. A person beginning some experiment should be very careful and attentive.

VIII. Find -ing Forms in passage I and define their functions. What is the meaning of the word " whether" in passage 2? X. Read and translate the text.