Means of communication

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

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.
The first electric telegraph
P.L.Shilling

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
A. G. Bell

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
Telephone boxes
Phone box 1926
Phone box 1936

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

We can communicate with each other by
computer
Fax
E-mail
Telephone
Internet

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

E-mail
A method of using computer for composing, storing and receiving messages over electronic communication system

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

Internet
An international network of computers. It has electronic mail and provides a large amount of information.

A system for sending or receiving speech over long distance
Telephone

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

The system block

A keyboard

A mouse

A monitor

A diskette

A screen

A mouse pad

A disk

A CD-ROM

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
Complete the sentences