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15 дек 1643 г. - Blaise Pascal develops the first mechanical calculator
Добавлено на ленту времени:
Charm of Music Midterm - Juhi Vazirani
By
Juhi Vazirani
3 окт 2017
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821
Дата:
15 дек 1643 г.
Сейчас
~ 382 г назад
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