COMMUNICATION (1)
Communication is the process of exchanging information. People exchange information using communication means. Communication has always some purpose. Mass communication, for example, sends messages for masses of people.
The history of communication means is a long and interesting one. Communication through electric media. At the beginning of the 19th century the electric revolution made great progress. By 1832 the telegraph had been invented. Wires crossed the continents and cables were put under the Atlantic Ocean. Some 40 years later (in 1876) the telephone was patented. Messages began to be transmitted over electrical currents carried by wires.
Early radio. At the beginning of the 20th century it became possible to transmit messages without wires. Messages were sent by wireless telegraph that is now called early radio. But modern radio became possible only when a vacuum tube had been invented (1906). Soon after the invention of tubes, radio receivers began to be widely used in the world.
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COMMUNICATION (2)
Television. Television was used experimentally as far as 1930. But its popular use began only some ten years later. And in about twenty years colour television became dominant over black-and-white.
Audio and video recordings are most popular means of communication today. Also popular are filming and photography.
High-technology revolution in electronics influenced the sphere of communication and greatly changed it. The new technology used for space exploration influenced modern communication both in offices and home. It became possible for business people to communicate with their colleagues in faraway places.
Computers and word processors serve this purpose and are being widely used in many offices all over the world.
The new technology has also influenced communication in everyday life.
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For example, it became possible for people to receive television programs through cables. Modem cable is a complex wire system that makes it possible to transmit a number of television signals at the same time.
People today also widely use videotape recorders to record television programs. One of the most interesting inventions of today is also the usage of satellites for video and audio communication. People can receive programs through using satellites.
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