Вопрос № 857149 - Английский язык

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Unlike digital computers - which started out as mechanical devices and then went through a brief electromechanical period during the 1930s, finally becoming electronic only in the 1940s - television was an electrical medium from the very beginnings.
Attempts to send images over distances with the use of electricity date to 1876, the year Alexander Graham Bell invented the telephone.

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Unlike digital computers – which started out as mechanical devices and then went through a brief electromechanical period during the 1930s, finally becoming electronic only in the 1940s – television was an electrical medium from the very beginnings.
Attempts to send images over distances with the use of electricity date to 1876, the year Alexander Graham Bell invented the telephone.

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The computer has been life-transforming invention. British mathematician Charles Babbage designed a form of computer in the mid-1830s, but it was not until more than a century later that theory was put into practice. Now, a whole generation has grown up with calculators, windows, icons, computer games and word processors, and the Internet and e-mail have transformed communication and information.
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The Internet and e-mail have transformed …

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People can now use the Internet and e-mail to communicate with each other cheaply and quickly. Twenty years ago, however, this wasn’t possible. In those days in Britain, some people used amateur radio to contact people all over the country, and even around the world. They had special radios in their houses that sent out radio signals. They contacted each other to exchange news about their lives and about the weather, or even to play games such as chess.
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People can now use the Internet and e-mail to communicate with each other …

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Have you got a mobile phone?
Before mobile phones were developed, you could only call someone with a phone which was connected to a phone line. That problem meant that it was often difficult to contact people, particularly if you were on a bus or in a car.
Before mobile phones, people didn’t send text messages to each other. Since they were introduced, text messages have changed the way we communicate. With text messages, you don’t need to actually call someone. You simply type a short message and send it, being careful, of course, to send it to another mobile and not to a home phone.
Mobile phones used to be big and heavy. Now, they’re small and light. The chances are that they will become even smaller and lighter in the future.
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Before mobile phones, people didn’t send text messages to …

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Not many people know that, back in the fifties, computers were very big, and also very slow. They took up complete floors of a building, and were less powerful, and much slower than any of today’s compact portable computers. At first, the data they had to process and record was fed in on punched-out paper; later magnetic tape was used, but both systems were completely inconvenient.
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In the fifties computers were less powerful, and much slow than any of today’s …