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Дидактичнi розробки для студентiв 4 курсу РТФ.doc
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X. Translate the following sentences paying attention to the tense forms of the verb:

I. Attention has been paid to the speed of the sending machine. 2. Care is taken not to heat the machine. 3. Account should be taken of the progress of science. 4. All the require­ments are met in the experiment. 5. Steps have been taken to increase the speed of sending up messages. 6, Great atten­tion is given to the study of electricity. 7. Reference had been made to this invention. 8. They will be permitted to do the experiment. 9. We are informed that many scientists are working at the problem of space communication. 10. The work is being done now and soon it will be finished.

XI. Analyze the following words and translate them paying attention to the negative prefixes:

disconnection, unusual, unload, unimportant, non-con­ductor, independently, immobile, impossibility, infrequent­ly, irregularity, illegal, indirect, discharge, ungrounded, incomplete.

XII. Read the following supplementary text and translate it without a dictionary; entitle it.

SUPPLEMENTARY TEXT

Teletypewriters are widely used for high speed telegraph communications as well as for transmission of written messages. For economical transmission over long distances it is essential that only a single wire or transmission channel be required to carry the signal. Furthermore, the reliable and efficient operation can be secured by using not more than two conditions on the line, such as current and no current, or positive impulses and negative impulses.

The familiar Morse code uses sequences of dots and dashes to represent the different characters of the alphabet and meet the above conditions. This code is not well adapted for tel­etypewriter control however, since the signals for different characters vary in time they require, from a single dot for the letter "E", to a combination of several dots and dashes for some of the less frequently used letters and numerals.

For machine operation it is desirable to have the signals for the different characters of uniform length that is of the same number of time units. This condition is met by the five-unit code where each character is identified by the im­pulses in five units of time. Each of the five units of this code may be either positive or negative.

XIII. Make oral reports on the problems:

  1. The history of the electric telegraph invention. 2. The teleprinter construction.

Lesson 9 Text: The History of Telephone

Pre-text exercises

I. Memorize the pronunciation of the following words and word com­binations:

diagram, magnet, address, granule, originally, automatic, nowadays, immediately, far away , violin , vibrate, wave-length, on the number of

II. Learn the following words. Read the following telephone numbers:

Model: 2740964 — two seven four o nine six four 203 69 62; 245 38 77; 254 43 96; 294 47 95; 143 23 1

III. Learn the following words:

a means of communication засіб спілкування

a delay затримка

the violin string скрипічна струна

the eardrum барабанна перепонка

the mouthpiece мікрофон

U-shaped у вигляді підкови

the carbon granules шматочки вугілля

space out проміжки

In the early days на зорі розвитку