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The Number 1981The Year 1981 ADIn the year 1981 AD MS-DOS was invented.In the year 1981 AD The first IBM-PC was invented. In the year 1981 AD the scanning tunneling microscope was invented by Gerd Karl Binnig and Heinrich Rohrer.
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The Number 1981The Year 1981 ADIn the year 1981 AD MS-DOS was invented.In the year 1981 AD The first IBM-PC was invented. In the year 1981 AD the scanning tunneling microscope was invented by Gerd Karl Binnig and Heinrich Rohrer.
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