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17 февраль category Computers & Internet Review: 0

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The older telephone function  on the basis of analog signals.  We can send analog signal to other computer and to get signal to our computer we must convert analog signal to digital signal. And now we have a device which can  convert the signals both. It is a MODEM. MODEM  have got two serves. The first is a Modulator (converts digital to analog) and the second DEModulator (converts analog to digital).

17 февраль category Computers & Internet Review: 0

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An operating system is a master control program which controls the functions of the computer system as a whole and the running of application programs. All computers don’t use the same operating systems. 

17 февраль category Computers & Internet Review: 0

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In 1952, a major computing company took a decision to get out of the business of making mainframe computers. And in 1980, IBM set up a special team to develop the first IBM PC. And it went on sale in 1981. 

15 февраль category Computers & Internet Review: 0

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The internet is a magnificent global network with millions and millions of computers and people connected to one another.

14 февраль category Computers & Internet Review: 0

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The Internet is a huge network of computers spanning this planet and is now started to bring in the surrounding area like space. Some computers like servers share data, others just surf the web as clients downloading the data. Public Internet began in the late 70's. In the 70*s web users used an interface called telnet, but now that program is mainly obsolete. Telnet is most widely deployed in accessing college email accounts.The Internet is very helpful, because it's a huge database of knowledge, from the pictures of family trips to an analysis of quantum mechanics. 

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