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Ill After-text Exercise.

1. Give equivalents of the following words and expressions:

надзвичайно складні електронні системи; необхідний; наукове дослідження; промислові розробки; запуск та моніторинг ракет; перетворювати; напівпровідниковий тріод; галузь електроніки; інтегральні схеми.

2. Say whether the following statements are true or false:

a) Electronics studies the problems connected with the application of instruments and devices, the action of which is based on the utilization of various phenomena that result from the movement of electrons through vacuum, gases and solid bodies.

b) Electronic computers are not widely used in scientific research and industrial designing.

c) In 1904 D. A. Fleming suggested a three-element tube.

d) To include the category of gas-filled tubes "vacuum tubes" became converted to "electron tubes".

e) Semiconductors do not possess a number of valuable advantages over electron motion in solids.

3. Answer the following questions on paragraph 7:

a) When did the intensive development of radio-location begin?

b) How was the field of electronics usually defined?

c) What jobs could small, controlled quantities of gas introduced into a "vacuum tube" make?

d) What did "vacuum tubes" become converted to?

e) What did the science of electronics expand to?

4.Translate paragraph 3 in writing.

5. Write out of paragraphs 4, 5 the words and word combinations describing the application of electronics in space research. Use them for rendering to you group-mates.

6. Define the forms and functions of the Infinitive in the following sentences and translate them:

a) Experiments on the improvement of radar equipment began to be made during World War II.

b) The first man to invent the radio was Popov, a Russian scientist.

c) To design, construct and operate a radar system is a great technical achievement.

d) Astronomers use radar to explore the universe.

e) To increase the range of modern radar scientists had to make numerous experiments.

f) Computers are the machines which are supplied with electrical pulses that represent the problem to be solved.

g) The scientist is sorry not to have found another solution to that problem.

h) We think this machine to have been operating for a long time until it was followed in 1977 by the desk calculator.

i) We know these operations to be done by a calculator.

j) Howard Aiken invented the device to be sequencing through the calculations without human intervention.

k) Any engineer knows the third-generation computers to be produced by using integrated circuits.

1) We know Aiken's device to have weighted 5 tons.

m) He explained the scheme for the second time for us to understand it better.

n) The air-speed indicator is used to measure the speed of a craft through the air.

o) The best way to understand the current is to see it acts in a circuit.

p) To make the signals represent information most digital computers use the binary code.

q) To prove this law experimentally is very difficult.

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