Прочитайте текст и заполните пропуски подходящими по смыслу словами. TV is one of our most important...: ответ на тест 912137 - Английский язык

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The invention that swept the world and changed leisure habits for countless millions 1_______ by Scottish-born electrical engineer John Logie Baird. It was television.
It had been realized for some time that 2_______ could be converted into 3_______ impulses, making it possible to transmit such 4_______ over a distance and then reconvert them into light.

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The range of radio 1______________ in space is extending more and more. There is every reason to believe that radio links may be set over 2________________ of 100 million kilometers or even more.
Now we cannot imagine our life without electronics.
But it all began with the 3_______________ of radio. It was our Russian scientist A.S. Popov who discovered the principles of 4________________ communication that finally led to the development of electronic tubes for use in various communication devices.

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Radio is one of 1_______ mass media. Radio 2_______ news, discussions, interviews, description of sport events, drama, religious programmes, music, and advertising.
There is at least one 3_______ in every country in the world, and altogether there are more than 25,000 stations all over the world. Radio stations 4_______ with one another.

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What is the Central Processing Unit used for?
The Central Processing Unit (CPU) is the brain of the computer. It reads and interprets software instructions and coordinates the processing activities that must take place. The design of the CPU affects the processing power and the speed of the computer, as well as the amount of main memory it can use effectively. With a well-designed CPU in your computer, you can perform highly sophisticated tasks in a very short time.

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What is ROM?
Memory is the system of component of the computer in which information is stored. There are two types of computer memory: RAM and ROM.
RAM (random access memory) is the volatile computer memory, used for creating, loading, and running programs and for manipulating and temporarily storing data;
ROM (read only memory) is nonvolatile, nonmodifiable computer memory, used to hold programmed instructions to the system.
The more memory you have in your computer, the more operations you can perform.

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Millions of people around the world use the Internet to search for and retrieve information on all sorts of topics in a wide variety of areas including the arts, business, government, humanities, news, politics and recreation. People communicate through electronic mail (e-mail), discussion groups, chat channels and other means of informational exchange. They share information and make commercial and business transactions. All this activity is possible because tens of thousands of networks are connected to the Internet and exchange information in the same basic ways.