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Something that represents or stands for something else. Improved the range at which people could communicate.
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A device for applying pressure to an inked surface resting upon a print medium (such as paper or cloth), thereby transferring the ink. Typically used for texts, the invention of the printing press is widely regarded as one of the most influential events in the second millennium,[1] ushering in the period of modernity.[2]
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A typewriter is a mechanical or electromechanical machine for writing in characters similar to those produced by printer's movable type by means of keyboard-operated types striking a ribbon to transfer ink or carbon impressions onto paper. Typically one character is printed on each keypress. The machine prints characters by making ink impressions of type elements similar to the sorts used in movable type letterpress printing.
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Alexander Graham Bell invented the telephone in Boston in 1876. One hundred twenty years later there are over 360 million telephone numbers, and that figure grows each year.
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The firdt commercially available mass prodiuced electronic cmputer entered the market. The computer was manufactured in the United States.
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In 1973 a global computer network emerged, providing a variety of information and communication facilities. These interconnected networks use standardized communication protocols.
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Software that allows you to call people on their computers or phones.
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