Amazing Old Calculator (Curta) - Numberphile

توضیحات:

The Curta is a pocket-sized, mechanical, digital calculator!!! It was invented by Curt Herzstark. Shown here by Alex Bellos, author of Alex's Adventures in N...

لغات کلیدی:

curta, calculator, alex, bellos, numberphile, number, phile, number, numbers, maths, mathematics, mathematical, numerals, count, counting

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