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1973: Martin Cooper created the first cell phone. The cell phone helped the world by making it easy to call anybody on a portable phone.

1973: Martin Cooper created the first cell phone. The cell phone helped the world by making it easy to call anybody on a portable phone.

November 15th, 1971: Intel releases world's first commercial single-chip microprocessor, the 4004.

November 15th, 1971: Intel releases world's first commercial single-chip microprocessor, the 4004.

GPO Mobile Call Office unit,  designed to meet emergency needs, parked at the Royal Festival Hall in London 1955

GPO Mobile Call Office unit, designed to meet emergency needs, parked at the Royal Festival Hall in London 1955

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