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Claude Shannon publishes two benchmark papers on Information Theory, containing the basis for data compression (source encoding) and error detection and correction (channel encoding).

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Engineers at Bell Labs develop the concept of cellular technology.

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The transistor is invented by scientists John Bardeen, Walter Brattain and William Shockley who later share the Nobel Prize. The transistor replaces vacuum tubes, serving as the foundation for the development of modern electronics and makes possible the marriage of computers and communications.

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The first commercial mobile radiotelephone service is introduced in St. Louis

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First commercial radiotelephone service operated between Britain and the US

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Guglielmo Marconi develops the first wireless telegraph system