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Вы можете ознакомиться и скачать презентацию на тему Means of communication. Доклад-сообщение содержит 24 слайдов. Презентации для любого класса можно скачать бесплатно. Если материал и наш сайт презентаций Mypresentation Вам понравились – поделитесь им с друзьями с помощью социальных кнопок и добавьте в закладки в своем браузере.

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Means of communication Author: Kucheryavyy Ivan

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Thousand of years ago, men could send messages over a long distance. They used the light of fires at night and the smoke of fires by day. They used the loud sound of drums to send messages across the great forests of Africa. These means of long distance communication were used for centuries Thousand of years ago, men could send messages over a long distance. They used the light of fires at night and the smoke of fires by day. They used the loud sound of drums to send messages across the great forests of Africa. These means of long distance communication were used for centuries

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The first electric telegraph The long distance communication changed in 1832, when the electric telegraph was invented by the Russian scientist P.L.Shilling. The telegraph could not carry voices. People used a special code to send words over the telegraph.

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The first telephone The telephone was invented by A. G. Bell, who was born in Scotland, in 1847. The first telephone was not at all like the one we use every day. The person who talked into it could not hear; and the person who heard could not talk

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Telephone boxes The famous British red telephone box was designed by Sir G. G. Scott in the 1920s and 1930s. In 1985, most of them were replaced by modern telephone boxes. The people protested so much that the old red boxes were put back in London’s streets

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Telephone station The first telephone exchange opened in Moscow in 1882. At that time it served 61 clients. Ten years letter, their number was 1400

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We can communicate with each other by We can communicate with each other by

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What is it? The machine which is used for sending or receiving copies of printed material, letters, pictures, etc. along a telephone line

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E-mail

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Computer An electronic machine that can store and recall information, do many processes on it

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Internet

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Telephone A system for sending or receiving speech over long distance

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Parts of coputer The system block A keyboard A mouse A monitor A diskette A screen A mouse pad A disk A CD-ROM

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The system block

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A keyboard

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A mouse

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A monitor

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A diskette

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A screen

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A mouse pad

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A disk

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A CD-ROM

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Complete the sentences Long ago men used different means of long distance communication….. ….such as light of fires, smoke fires and loud sound of drums. The electric telegraph was invented by… …the Russian scientist P. L. Shilling. People used a special code to…. ….send words over the telegraph. The person who talked into the first telephone…. …could not hear and the person who heard could not talk. Today we can talk across…. ….seas, oceans, and continents: there is hardly a corner of civilized world that can not be reached by telephone