Dipl. Ing. Horst Barsuhn, IBM

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Early data processing

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Mechanical calculating

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How did people count in earlier times?

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Guided tours and free entrance

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Bob Bonies

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Red, Blue, Yellow and Green

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Computer memory using punched holes

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1+1=10 Calculating the computer way

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Pinwheels and Stepped Drums

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1 + 1 = 2 Addition with machines

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Calculating with the Abacus

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Open Day till 6 p.m.

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Bernhard J. Dotzler

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Reliefs made up of right angles

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Open Day and Long Night at the Arithmeum until 12 p.m.

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The Alphabet plastique

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Dr. Jens Vygen

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Guided tours and lecture

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Open Day and Long Night at the Arithmeum until 12 p.m.

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